openapi: 3.2.0
info:
  title: 2s — the (most) everything Country 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: Country
paths:
  /api/country/financials:
    get:
      tags:
      - Country
      summary: Country-level financial and credit reference data
      description: 'Country-level financial and credit reference data: sovereign credit rating, equity risk premium, country risk premium, default spread, currency (name + ISO code), region/sub-region, and ISO country codes. Returns all ~249 countries by default, or pass code (ISO alpha-2 or alpha-3) to get one. Use it for cross-border valuation (discount-rate inputs) and sovereign-risk context — distinct from country.lookup (general reference). Data by Finnhub.'
      operationId: country_financials
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized: items = country financial/credit reference rows.'
          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:
                            country:
                              type: string
                              nullable: true
                            code2:
                              type: string
                              nullable: true
                            code3:
                              type: string
                              nullable: true
                            currency:
                              type: string
                              nullable: true
                            currencyCode:
                              type: string
                              nullable: true
                            region:
                              type: string
                              nullable: true
                            subRegion:
                              type: string
                              nullable: true
                            rating:
                              type: string
                              nullable: true
                              description: Moody’s-style sovereign credit rating.
                            equityRiskPremium:
                              type: number
                              nullable: true
                            countryRiskPremium:
                              type: number
                              nullable: true
                            defaultSpread:
                              type: number
                              nullable: true
                          required:
                          - country
                          - code2
                          - code3
                          - currency
                          - currencyCode
                          - region
                          - subRegion
                          - rating
                          - equityRiskPremium
                          - countryRiskPremium
                          - defaultSpread
                          additionalProperties: false
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      meta:
                        type: object
                        properties:
                          code:
                            type: string
                            nullable: true
                        required:
                        - code
                        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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: country.financials
      x-2s-version: null
      x-2s-price:
        usd: 0.0025
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.002500'
        protocols:
        - x402: {}
      parameters:
      - name: code
        in: query
        required: false
        description: ISO alpha-2 or alpha-3 country code. Omit for all countries.
        schema:
          type: string
          minLength: 2
          maxLength: 3
          pattern: ^[A-Za-z]{2,3}$
      - $ref: '#/components/parameters/TrialMode'
  /api/country/lookup:
    get:
      tags:
      - Country
      summary: Look up country metadata via REST Countries
      description: Look up country metadata via REST Countries. Pass alpha2 (2-letter ISO 3166-1), alpha3 (3-letter), or name (with optional fullText=true for exact match). Returns common + official name, ISO codes, region + subregion, independence + UN-member flags, capital(s), population, area km², landlocked flag, neighboring borders (alpha-3), timezones, currencies (code → name + symbol), languages, calling code, flag emoji + SVG/PNG URLs, lat/lng coordinates, Google Maps + OSM URLs, driving side, top-level domains.
      operationId: country_lookup
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = matched country records (usually one for code lookups, several for name fuzzy match); total = number matched; meta.query echoes the lookup.'
          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:
                            name:
                              type: object
                              properties:
                                common:
                                  type: string
                                official:
                                  type: string
                              required:
                              - common
                              - official
                              additionalProperties: false
                            alpha2:
                              type: string
                            alpha3:
                              type: string
                            numericCode:
                              type: string
                              nullable: true
                            cioc:
                              type: string
                              nullable: true
                            region:
                              type: string
                              nullable: true
                            subregion:
                              type: string
                              nullable: true
                            independent:
                              type: boolean
                              nullable: true
                            unMember:
                              type: boolean
                              nullable: true
                            capital:
                              type: array
                              items:
                                type: string
                            population:
                              type: integer
                              nullable: true
                            areaKm2:
                              type: number
                              nullable: true
                            landlocked:
                              type: boolean
                              nullable: true
                            borders:
                              type: array
                              items:
                                type: string
                            timezones:
                              type: array
                              items:
                                type: string
                            currencies:
                              type: object
                              additionalProperties:
                                type: object
                                properties:
                                  name:
                                    type: string
                                  symbol:
                                    type: string
                                    nullable: true
                                required:
                                - name
                                - symbol
                                additionalProperties: false
                            languages:
                              type: object
                              additionalProperties:
                                type: string
                            callingCode:
                              type: string
                              nullable: true
                            flag:
                              type: string
                              nullable: true
                            flagSvg:
                              type: string
                              nullable: true
                            flagPng:
                              type: string
                              nullable: true
                            coordinates:
                              type: object
                              properties:
                                lat:
                                  type: number
                                lng:
                                  type: number
                              required:
                              - lat
                              - lng
                              additionalProperties: false
                              nullable: true
                            googleMapsUrl:
                              type: string
                              nullable: true
                            openStreetMapsUrl:
                              type: string
                              nullable: true
                            drivingSide:
                              type: string
                              nullable: true
                            tld:
                              type: array
                              items:
                                type: string
                          required:
                          - name
                          - alpha2
                          - alpha3
                          - numericCode
                          - cioc
                          - region
                          - subregion
                          - independent
                          - unMember
                          - capital
                          - population
                          - areaKm2
                          - landlocked
                          - borders
                          - timezones
                          - currencies
                          - languages
                          - callingCode
                          - flag
                          - flagSvg
                          - flagPng
                          - coordinates
                          - googleMapsUrl
                          - openStreetMapsUrl
                          - drivingSide
                          - tld
                          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:
                              alpha2:
                                type: string
                                nullable: true
                              alpha3:
                                type: string
                                nullable: true
                              name:
                                type: string
                                nullable: true
                              fullText:
                                type: boolean
                            required:
                            - alpha2
                            - alpha3
                            - name
                            - fullText
                            additionalProperties: false
                        required:
                        - 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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: country.lookup
      x-2s-version: null
      x-2s-price:
        usd: 0.003
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.003000'
        protocols:
        - x402: {}
      parameters:
      - name: alpha2
        in: query
        required: false
        description: Alpha2.
        schema:
          type: string
          minLength: 2
          maxLength: 2
          pattern: ^[A-Za-z]{2}$
      - name: alpha3
        in: query
        required: false
        description: Alpha3.
        schema:
          type: string
          minLength: 3
          maxLength: 3
          pattern: ^[A-Za-z]{3}$
      - name: name
        in: query
        required: false
        description: Name to search for.
        schema:
          type: string
          minLength: 2
          maxLength: 80
      - name: fullText
        in: query
        required: false
        description: Full text.
        schema:
          type: boolean
          default: false
      - $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.'