openapi: 3.2.0
info:
  title: 2s — the (most) everything License API
  version: '1'
  summary: The (most) everything API.
  description: 'The (most) everything API for AI agents: 575+ pay-per-call endpoints on one origin.'
  contact:
    name: 2s
    url: https://2s.io
    email: alley@2s.io
  x-logo:
    url: https://2s.io/icon-512.png
    altText: 2s
  x-guidance: 'Pay-per-call REST API for AI agents — hundreds of endpoints returning ground-truth data (US public records, company & legal identifiers, finance/SEC, crypto/web3, security & CVEs, medical codes, weather & geocoding, agriculture, energy, maritime, music, and more). Every endpoint is paid per call in USDC via x402 (Base or Solana) — no API key, no signup. Call any endpoint with no auth to get a 402 PaymentRequirements envelope, sign it (EIP-3009 on Base, partial SPL transfer on Solana), and retry with the PAYMENT-SIGNATURE header. Add ?trial=1 for one free real call per endpoint per hour to test before paying. To discover the right endpoint: GET https://2s.io/api/directory for the full catalog, or GET https://2s.io/api/search/endpoints?q=<natural-language task> for a ranked match. Per-call price is on each operation as x-payment-info (from $0.001). Batch up to 50 calls behind one payment via POST https://2s.io/api/batch/run.'
servers:
- url: https://2s.io
tags:
- name: License
paths:
  /api/license/broker:
    get:
      tags:
      - License
      summary: FINRA BrokerCheck lookup - every US registered broker /
      description: FINRA BrokerCheck lookup — every US registered broker / investment advisor (~620k current + former). Search by free-text query (name + firm) or by CRD number for a direct individual record. Each result includes CRD ID, name (with any 'doing business as' aliases), broker-check + IA scope (Active/Inactive), a hasDisclosures flag (yes/no for complaints, settlements, terminations on file), industry-start date, FINRA registration count, and current + previous employments (firm name, branch city/state, registration dates). Public per FINRA's investor-protection BrokerCheck program; pair with /api/finance/sec-filings for cross-reference.
      operationId: license_broker
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = FINRA BrokerCheck records; total = upstream match count; meta.query echoes the search.'
          content:
            application/json:
              schema:
                type: object
                required:
                - data
                - meta
                properties:
                  data:
                    type: object
                    properties:
                      ok:
                        type: boolean
                        enum:
                        - true
                      items:
                        type: array
                        items:
                          type: object
                          properties:
                            crd:
                              type: string
                            firstName:
                              type: string
                              nullable: true
                            middleName:
                              type: string
                              nullable: true
                            lastName:
                              type: string
                              nullable: true
                            otherNames:
                              type: array
                              items:
                                type: string
                            bcScope:
                              type: string
                              nullable: true
                            iaScope:
                              type: string
                              nullable: true
                            hasDisclosures:
                              type: boolean
                            yearsInIndustryStart:
                              type: string
                              nullable: true
                            finraRegistrationCount:
                              type: integer
                            employmentCount:
                              type: integer
                            currentEmployments:
                              type: array
                              items:
                                type: object
                                properties:
                                  firmId:
                                    type: string
                                  firmName:
                                    type: string
                                  branchCity:
                                    type: string
                                    nullable: true
                                  branchState:
                                    type: string
                                    nullable: true
                                  registrationBeginDate:
                                    type: string
                                    nullable: true
                                required:
                                - firmId
                                - firmName
                                - branchCity
                                - branchState
                                - registrationBeginDate
                                additionalProperties: false
                            previousEmployments:
                              type: array
                              items:
                                type: object
                                properties:
                                  firmId:
                                    type: string
                                  firmName:
                                    type: string
                                  registrationBeginDate:
                                    type: string
                                    nullable: true
                                  registrationEndDate:
                                    type: string
                                    nullable: true
                                required:
                                - firmId
                                - firmName
                                - registrationBeginDate
                                - registrationEndDate
                                additionalProperties: false
                          required:
                          - crd
                          - firstName
                          - middleName
                          - lastName
                          - otherNames
                          - bcScope
                          - iaScope
                          - hasDisclosures
                          - yearsInIndustryStart
                          - finraRegistrationCount
                          - employmentCount
                          - currentEmployments
                          - previousEmployments
                          additionalProperties: false
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      meta:
                        type: object
                        properties:
                          query:
                            type: object
                            properties:
                              query:
                                type: string
                                nullable: true
                              crd:
                                type: string
                                nullable: true
                              limit:
                                type: integer
                              offset:
                                type: integer
                            required:
                            - query
                            - crd
                            - limit
                            - offset
                            additionalProperties: false
                          returned:
                            type: integer
                        required:
                        - query
                        - returned
                        additionalProperties: false
                    required:
                    - ok
                    - items
                    - total
                    - source
                    additionalProperties: false
                  meta:
                    $ref: '#/components/schemas/CallMeta'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '405':
          $ref: '#/components/responses/MethodNotAllowed'
        '500':
          $ref: '#/components/responses/ServerError'
        '502':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: license.broker
      x-2s-version: null
      x-2s-price:
        usd: 0.003
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.003000'
        protocols:
        - x402: {}
      parameters:
      - name: query
        in: query
        required: false
        description: Free-text search query.
        schema:
          type: string
          minLength: 2
          maxLength: 200
      - name: crd
        in: query
        required: false
        description: Crd.
        schema:
          type: string
          pattern: ^\d{1,9}$
      - name: limit
        in: query
        required: false
        description: Maximum number of results to return.
        schema:
          type: integer
          minimum: 1
          maximum: 50
          default: 10
      - name: offset
        in: query
        required: false
        description: Number of results to skip before returning (pagination offset).
        schema:
          type: integer
          minimum: 0
          maximum: 10000
          default: 0
      - $ref: '#/components/parameters/TrialMode'
  /api/license/medical:
    get:
      tags:
      - License
      summary: US healthcare provider lookup (NPPES NPI Registry)
      description: US healthcare provider lookup (NPPES NPI Registry). Every US doctor, nurse, dentist, hospital, lab, pharmacy has an NPI — this returns the canonical record. Lookup by 10-digit NPI for a precise match, or by firstName + lastName + state for fuzzy search. Each record includes name + credentials, status, enumeration date, primary + secondary specialty taxonomies (with state license numbers), practice + mailing addresses, phone, and any cross-issuer identifiers (Medicaid, Medicare, etc.). Public-domain CMS data, free. For all three NPI datasets merged (identity + industry payments + Medicare billing) in one call, see /api/health/provider-profile.
      operationId: license_medical
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = NPPES provider records; total = null (NPPES caps results without a true count); meta.query echoes the search.'
          content:
            application/json:
              schema:
                type: object
                required:
                - data
                - meta
                properties:
                  data:
                    type: object
                    properties:
                      ok:
                        type: boolean
                        enum:
                        - true
                      items:
                        type: array
                        items:
                          type: object
                          properties:
                            npi:
                              type: string
                            enumerationType:
                              type: string
                            name:
                              type: object
                              properties:
                                first:
                                  type: string
                                  nullable: true
                                last:
                                  type: string
                                  nullable: true
                                middle:
                                  type: string
                                  nullable: true
                                credential:
                                  type: string
                                  nullable: true
                                organizationName:
                                  type: string
                                  nullable: true
                              required:
                              - first
                              - last
                              - middle
                              - credential
                              - organizationName
                              additionalProperties: false
                            status:
                              type: string
                              nullable: true
                            enumerationDate:
                              type: string
                              nullable: true
                            lastUpdated:
                              type: string
                              nullable: true
                            taxonomies:
                              type: array
                              items:
                                type: object
                                properties:
                                  code:
                                    type: string
                                  desc:
                                    type: string
                                  primary:
                                    type: boolean
                                  licenseNumber:
                                    type: string
                                    nullable: true
                                  licenseState:
                                    type: string
                                    nullable: true
                                required:
                                - code
                                - desc
                                - primary
                                - licenseNumber
                                - licenseState
                                additionalProperties: false
                            addresses:
                              type: array
                              items:
                                type: object
                                properties:
                                  purpose:
                                    type: string
                                  address1:
                                    type: string
                                    nullable: true
                                  address2:
                                    type: string
                                    nullable: true
                                  city:
                                    type: string
                                    nullable: true
                                  state:
                                    type: string
                                    nullable: true
                                  postalCode:
                                    type: string
                                    nullable: true
                                  country:
                                    type: string
                                    nullable: true
                                  telephone:
                                    type: string
                                    nullable: true
                                  fax:
                                    type: string
                                    nullable: true
                                required:
                                - purpose
                                - address1
                                - address2
                                - city
                                - state
                                - postalCode
                                - country
                                - telephone
                                - fax
                                additionalProperties: false
                            identifiers:
                              type: array
                              items:
                                type: object
                                properties:
                                  code:
                                    type: string
                                  desc:
                                    type: string
                                  issuer:
                                    type: string
                                    nullable: true
                                  identifier:
                                    type: string
                                  state:
                                    type: string
                                    nullable: true
                                required:
                                - code
                                - desc
                                - issuer
                                - identifier
                                - state
                                additionalProperties: false
                          required:
                          - npi
                          - enumerationType
                          - name
                          - status
                          - enumerationDate
                          - lastUpdated
                          - taxonomies
                          - addresses
                          - identifiers
                          additionalProperties: false
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      meta:
                        type: object
                        properties:
                          query:
                            type: object
                            properties:
                              npi:
                                type: string
                                nullable: true
                              name:
                                type: string
                                nullable: true
                              firstName:
                                type: string
                                nullable: true
                              lastName:
                                type: string
                                nullable: true
                              state:
                                type: string
                                nullable: true
                              enumerationType:
                                type: string
                                nullable: true
                              limit:
                                type: integer
                              skip:
                                type: integer
                            required:
                            - npi
                            - name
                            - firstName
                            - lastName
                            - state
                            - enumerationType
                            - limit
                            - skip
                            additionalProperties: false
                          returned:
                            type: integer
                        required:
                        - query
                        - returned
                        additionalProperties: false
                    required:
                    - ok
                    - items
                    - total
                    - source
                    additionalProperties: false
                  meta:
                    $ref: '#/components/schemas/CallMeta'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '405':
          $ref: '#/components/responses/MethodNotAllowed'
        '500':
          $ref: '#/components/responses/ServerError'
        '502':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: license.medical
      x-2s-version: null
      x-2s-price:
        usd: 0.003
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.003000'
        protocols:
        - x402: {}
      parameters:
      - name: npi
        in: query
        required: false
        description: NPI.
        schema:
          type: string
          pattern: ^\d{10}$
      - name: firstName
        in: query
        required: false
        description: First name to filter by.
        schema:
          type: string
          minLength: 1
          maxLength: 80
      - name: lastName
        in: query
        required: false
        description: Last name to filter by.
        schema:
          type: string
          minLength: 1
          maxLength: 120
      - name: name
        in: query
        required: false
        description: Name to search for.
        schema:
          type: string
          minLength: 1
          maxLength: 120
      - name: state
        in: query
        required: false
        description: US state — two-letter postal abbreviation (e.g. CA) or full name.
        schema:
          type: string
          minLength: 2
          maxLength: 2
          pattern: ^[A-Za-z]{2}$
      - name: enumerationType
        in: query
        required: false
        description: Enumeration type.
        schema:
          type: string
          enum:
          - '1'
          - '2'
      - name: limit
        in: query
        required: false
        description: Maximum number of results to return.
        schema:
          type: integer
          minimum: 1
          maximum: 200
          default: 10
      - name: skip
        in: query
        required: false
        description: Skip.
        schema:
          type: integer
          minimum: 0
          maximum: 10000
          default: 0
      - $ref: '#/components/parameters/TrialMode'
  /api/license/real-estate:
    get:
      tags:
      - License
      summary: Verify US real-estate licenses (brokers, sales agents
      description: 'Verify US real-estate licenses (brokers, sales agents, broker companies). Currently supported state: TX (Texas Real Estate Commission license holders). Search by name (license holder, partial), licenseNumber (exact), licenseType (partial, e.g. "Broker", "Sales Agent"), status (e.g. "Active"). Each license: type, number, holder name, status, original license date, expiration date, and the related supervising broker (type/number/name) where applicable. Agent/broker due-diligence and KYC. Siblings: /api/license/medical, /api/license/broker, /api/license/trades. Official state open data.'
      operationId: license_real-estate
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = real-estate licenses; total = null (capped state-portal search); meta = {state, query}.'
          content:
            application/json:
              schema:
                type: object
                required:
                - data
                - meta
                properties:
                  data:
                    type: object
                    properties:
                      ok:
                        type: boolean
                        enum:
                        - true
                      items:
                        type: array
                        items:
                          type: object
                          properties:
                            licenseType:
                              type: string
                              nullable: true
                            licenseNumber:
                              type: string
                              nullable: true
                            name:
                              type: string
                              nullable: true
                            status:
                              type: string
                              nullable: true
                            originalLicenseDate:
                              type: string
                              nullable: true
                            expires:
                              type: string
                              nullable: true
                            supervisor:
                              type: object
                              properties:
                                type:
                                  type: string
                                  nullable: true
                                number:
                                  type: string
                                  nullable: true
                                name:
                                  type: string
                                  nullable: true
                              required:
                              - type
                              - number
                              - name
                              additionalProperties: false
                              nullable: true
                          required:
                          - licenseType
                          - licenseNumber
                          - name
                          - status
                          - originalLicenseDate
                          - expires
                          - supervisor
                          additionalProperties: false
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      meta:
                        type: object
                        properties:
                          state:
                            type: string
                          query:
                            type: object
                            properties:
                              name:
                                type: string
                                nullable: true
                              licenseNumber:
                                type: string
                                nullable: true
                              licenseType:
                                type: string
                                nullable: true
                              status:
                                type: string
                                nullable: true
                            required:
                            - name
                            - licenseNumber
                            - licenseType
                            - status
                            additionalProperties: false
                        required:
                        - state
                        - query
                        additionalProperties: false
                    required:
                    - ok
                    - items
                    - total
                    - source
                    additionalProperties: false
                  meta:
                    $ref: '#/components/schemas/CallMeta'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '405':
          $ref: '#/components/responses/MethodNotAllowed'
        '500':
          $ref: '#/components/responses/ServerError'
        '502':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: license.real-estate
      x-2s-version: null
      x-2s-price:
        usd: 0.0072
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.007200'
        protocols:
        - x402: {}
      parameters:
      - name: state
        in: query
        required: true
        description: US state — two-letter postal abbreviation (e.g. CA) or full name.
        schema:
          type: string
          enum:
          - TX
      - name: name
        in: query
        required: false
        description: Name to search for.
        schema:
          type: string
          minLength: 2
          maxLength: 120
      - name: licenseNumber
        in: query
        required: false
        description: License number.
        schema:
          type: string
          minLength: 1
          maxLength: 20
      - name: licenseType
        in: query
        required: false
        description: License type.
        schema:
          type: string
          minLength: 2
          maxLength: 60
      - name: status
        in: query
        required: false
        description: Filter results by status.
        schema:
          type: string
          minLength: 2
          maxLength: 40
      - name: limit
        in: query
        required: false
        description: Maximum number of results to return.
        schema:
          type: integer
          minimum: 1
          maximum: 100
          default: 10
      - name: offset
        in: query
        required: false
        description: Number of results to skip before returning (pagination offset).
        schema:
          type: integer
          minimum: 0
          default: 0
      - $ref: '#/components/parameters/TrialMode'
  /api/license/trades:
    get:
      tags:
      - License
      summary: Verify US trade / occupational licenses (electricians, A/C
      description: 'Verify US trade / occupational licenses (electricians, A/C technicians, cosmetologists, tow operators, and other state-regulated trades). Currently supported state: TX (Texas Department of Licensing & Regulation, all active licenses). Search by name (matches owner or business name, partial), licenseNumber (exact), licenseType (partial, e.g. "Electrician"), county. Each license: type + subtype, number, business + owner name, county, expiration date, continuing-education flag. Contractor due-diligence and KYC. Siblings: /api/license/medical (NPI), /api/license/broker (FINRA). Official state open data.'
      operationId: license_trades
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = trade/occupational licenses; total = null (capped state-portal search); meta = {state, query}.'
          content:
            application/json:
              schema:
                type: object
                required:
                - data
                - meta
                properties:
                  data:
                    type: object
                    properties:
                      ok:
                        type: boolean
                        enum:
                        - true
                      items:
                        type: array
                        items:
                          type: object
                          properties:
                            licenseType:
                              type: string
                              nullable: true
                            licenseSubtype:
                              type: string
                              nullable: true
                            licenseNumber:
                              type: string
                              nullable: true
                            businessName:
                              type: string
                              nullable: true
                            ownerName:
                              type: string
                              nullable: true
                            county:
                              type: string
                              nullable: true
                            expires:
                              type: string
                              nullable: true
                            continuingEducation:
                              type: boolean
                              nullable: true
                          required:
                          - licenseType
                          - licenseSubtype
                          - licenseNumber
                          - businessName
                          - ownerName
                          - county
                          - expires
                          - continuingEducation
                          additionalProperties: false
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      meta:
                        type: object
                        properties:
                          state:
                            type: string
                          query:
                            type: object
                            properties:
                              name:
                                type: string
                                nullable: true
                              licenseNumber:
                                type: string
                                nullable: true
                              licenseType:
                                type: string
                                nullable: true
                              county:
                                type: string
                                nullable: true
                            required:
                            - name
                            - licenseNumber
                            - licenseType
                            - county
                            additionalProperties: false
                        required:
                        - state
                        - query
                        additionalProperties: false
                    required:
                    - ok
                    - items
                    - total
                    - source
                    additionalProperties: false
                  meta:
                    $ref: '#/components/schemas/CallMeta'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '405':
          $ref: '#/components/responses/MethodNotAllowed'
        '500':
          $ref: '#/components/responses/ServerError'
        '502':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: license.trades
      x-2s-version: null
      x-2s-price:
        usd: 0.0072
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.007200'
        protocols:
        - x402: {}
      parameters:
      - name: state
        in: query
        required: true
        description: US state — two-letter postal abbreviation (e.g. CA) or full name.
        schema:
          type: string
          enum:
          - TX
      - name: name
        in: query
        required: false
        description: Name to search for.
        schema:
          type: string
          minLength: 2
          maxLength: 120
      - name: licenseNumber
        in: query
        required: false
        description: License number.
        schema:
          type: string
          minLength: 1
          maxLength: 20
      - name: licenseType
        in: query
        required: false
        description: License type.
        schema:
          type: string
          minLength: 2
          maxLength: 60
      - name: county
        in: query
        required: false
        description: County name to filter by.
        schema:
          type: string
          minLength: 2
          maxLength: 40
      - name: limit
        in: query
        required: false
        description: Maximum number of results to return.
        schema:
          type: integer
          minimum: 1
          maximum: 100
          default: 10
      - name: offset
        in: query
        required: false
        description: Number of results to skip before returning (pagination offset).
        schema:
          type: integer
          minimum: 0
          default: 0
      - $ref: '#/components/parameters/TrialMode'
components:
  schemas:
    Source:
      type: object
      description: 'Provenance of the data: upstream provider, source URL, and license.'
      properties:
        provider:
          type: string
          description: Upstream data provider.
        url:
          type: string
          description: Source URL or documentation link.
        license:
          type: string
          description: License / usage terms for the data.
    CallMeta:
      type: object
      description: Per-call meta envelope — endpoint id, cost, caller kind, settlement details.
    X402PaymentRequiredV2:
      type: object
      description: x402 v2 PaymentRequired envelope. Pick any entry from accepts[], sign for that rail, retry with the PAYMENT-SIGNATURE header.
      required:
      - x402Version
      - accepts
      properties:
        x402Version:
          type: integer
          const: 2
        error:
          type: string
          description: Human-readable reason payment is required.
        resource:
          type: string
          description: The resource URL being purchased.
        accepts:
          type: array
          description: Payment requirement options, one per supported network (Base USDC, Solana USDC).
          items:
            type: object
            required:
            - scheme
            - network
            - amount
            - asset
            - payTo
            - maxTimeoutSeconds
            properties:
              scheme:
                type: string
                enum:
                - exact
              network:
                type: string
                description: CAIP-2 network id, e.g. "eip155:8453" (Base) or "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp".
              amount:
                type: string
                description: Price in atomic asset units (USDC has 6 decimals).
              asset:
                type: string
                description: Asset contract address / mint.
              payTo:
                type: string
                description: Treasury address to pay.
              maxTimeoutSeconds:
                type: integer
              extra:
                type: object
                description: 'Rail-specific extras (EVM: EIP-712 domain name/version; Solana: feePayer).'
                additionalProperties: true
        extensions:
          type: object
          description: Optional discovery metadata (e.g. bazaar input/output schemas).
          additionalProperties: true
  responses:
    PaymentRequired:
      description: Payment required. Body contains the x402 PaymentRequirements envelope with a multi-network accepts array; the per-call price is in accepts[].amount (and on the operation as x-2s-price). Sign for whichever rail you hold USDC on (EIP-3009 for Base, partial SPL transfer for Solana) and retry with the PAYMENT-SIGNATURE header (X-PAYMENT also accepted for v1 clients).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/X402PaymentRequiredV2'
    UpstreamError:
      description: Upstream provider error.
    MethodNotAllowed:
      description: Method not allowed — see `Allow` header for the supported method.
    ServerError:
      description: Internal server error.
    BadRequest:
      description: Bad request — invalid parameters.
  parameters:
    TrialMode:
      name: trial
      in: query
      required: false
      description: 'Try before you buy. Set to 1 for one free real call per endpoint per hour — no wallet or payment needed — to verify the endpoint before paying. Equivalent to sending the "X-2s-Trial: 1" request header. Works on every endpoint.'
      schema:
        type: integer
        enum:
        - 1
  securitySchemes:
    x402Payment:
      type: apiKey
      in: header
      name: PAYMENT-SIGNATURE
      description: 'x402 protocol v2: base64-encoded PaymentPayload. Call any paid endpoint without auth to receive a 402 with a multi-network PaymentRequirements envelope. Sign for either rail: EIP-3009 transferWithAuthorization (Base USDC) OR a partial SPL token transfer (Solana USDC). Retry with PAYMENT-SIGNATURE header. X-PAYMENT is also accepted for v1 buyer clients. See https://x402.org.'