openapi: 3.2.0
info:
  title: 2s — the (most) everything Treasury 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: treasury
paths:
  /api/treasury/cash:
    get:
      tags:
      - treasury
      summary: Daily Treasury Statement (DTS) operating cash balance via
      description: Daily Treasury Statement (DTS) operating cash balance via US Treasury Fiscal Data. Returns daily snapshots of the Treasury General Account (TGA) at the Federal Reserve plus tax-and-loan accounts and Federal Reserve deposit accounts. Each row carries record_date, account_type, close_today_bal, open_today_bal, open_month_bal, open_fiscal_year_bal. Useful for liquidity-tracking agents and macro researchers watching the Treasury Cash Balance heading into Treasury auctions, debt-ceiling pinch-points, etc. Fiscal Data filter syntax.
      operationId: treasury_cash
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = Daily Treasury Statement cash balance.'
          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:
                            record_date:
                              type: string
                            account_type:
                              type: string
                              description: e.g. "Treasury General Account (TGA) Opening Balance".
                            close_today_bal:
                              type: string
                              description: Closing balance, USD millions, as a string.
                            open_today_bal:
                              type: string
                            open_month_bal:
                              type: string
                            open_fiscal_year_bal:
                              type: string
                          additionalProperties: true
                          description: Raw Fiscal Data DTS row — all values are strings; columns depend on the `fields` projection and may include additional dataset columns.
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      page:
                        type: object
                        properties:
                          number:
                            type: integer
                          size:
                            type: integer
                          pages:
                            type: integer
                            nullable: true
                        required:
                        - number
                        - size
                        - pages
                        additionalProperties: false
                      meta:
                        type: object
                        additionalProperties: {}
                    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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: treasury.cash
      x-2s-version: null
      x-2s-price:
        usd: 0.003
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.003000'
        protocols:
        - x402: {}
      parameters:
      - name: fields
        in: query
        required: false
        description: Fields.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*(,[a-z][a-z0-9_]*)*$
          maxLength: 400
      - name: filter
        in: query
        required: false
        description: Filter.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+(,[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+)*$
          maxLength: 800
      - name: sort
        in: query
        required: false
        description: Field to sort results by.
        schema:
          type: string
          pattern: ^-?[a-z][a-z0-9_]*(,-?[a-z][a-z0-9_]*)*$
          maxLength: 200
      - name: pageSize
        in: query
        required: false
        description: Number of results to return per page.
        schema:
          type: integer
          minimum: 1
          maximum: 10000
          default: 100
      - name: pageNumber
        in: query
        required: false
        description: Page number (1-based) for paginated results.
        schema:
          type: integer
          minimum: 1
      - $ref: '#/components/parameters/TrialMode'
  /api/treasury/debt:
    get:
      tags:
      - treasury
      summary: US National Debt - daily "Debt to the Penny" via US
      description: 'US National Debt — daily "Debt to the Penny" via US Treasury Fiscal Data. Each row carries record_date, debt held by public, intragovernmental holdings, and total public debt outstanding (all USD, signed integers as strings to preserve precision). Optional `filter` uses Fiscal Data syntax: `col:op:val` joined by commas (ops: eq, lt, lte, gt, gte, in). Default sort is `-record_date` (newest first). Authoritative source for "how much does the US owe?" — every weekday since 1993.'
      operationId: treasury_debt
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = Daily Debt to the Penny.'
          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:
                            record_date:
                              type: string
                            debt_held_public_amt:
                              type: string
                              description: Debt held by the public, USD, as a string (preserves penny precision).
                            intragov_hold_amt:
                              type: string
                              description: Intragovernmental holdings, USD, as a string.
                            tot_pub_debt_out_amt:
                              type: string
                              description: Total public debt outstanding, USD, as a string.
                          additionalProperties: true
                          description: Raw Fiscal Data Debt to the Penny row — all values are strings; columns depend on the `fields` projection and may include additional dataset columns.
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      page:
                        type: object
                        properties:
                          number:
                            type: integer
                          size:
                            type: integer
                          pages:
                            type: integer
                            nullable: true
                        required:
                        - number
                        - size
                        - pages
                        additionalProperties: false
                      meta:
                        type: object
                        additionalProperties: {}
                    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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: treasury.debt
      x-2s-version: null
      x-2s-price:
        usd: 0.003
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.003000'
        protocols:
        - x402: {}
      parameters:
      - name: fields
        in: query
        required: false
        description: Fields.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*(,[a-z][a-z0-9_]*)*$
          maxLength: 400
      - name: filter
        in: query
        required: false
        description: Filter.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+(,[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+)*$
          maxLength: 800
      - name: sort
        in: query
        required: false
        description: Field to sort results by.
        schema:
          type: string
          pattern: ^-?[a-z][a-z0-9_]*(,-?[a-z][a-z0-9_]*)*$
          maxLength: 200
      - name: pageSize
        in: query
        required: false
        description: Number of results to return per page.
        schema:
          type: integer
          minimum: 1
          maximum: 10000
          default: 100
      - name: pageNumber
        in: query
        required: false
        description: Page number (1-based) for paginated results.
        schema:
          type: integer
          minimum: 1
      - $ref: '#/components/parameters/TrialMode'
  /api/treasury/exchange-rates:
    get:
      tags:
      - treasury
      summary: Official US Treasury exchange rates via US Treasury Fiscal
      description: Official US Treasury exchange rates via US Treasury Fiscal Data. Used by federal agencies to report foreign-currency transactions in USD. Quarterly + ad-hoc updates per country/currency pair. Each row carries record_date, country, currency, country_currency_desc, exchange_rate, effective_date. Pair with `/api/fx/rates` (ECB Frankfurter, daily market rates) for cross-validation. Use Fiscal Data filter syntax — e.g. `filter=country:eq:Brazil` to scope to a single country.
      operationId: treasury_exchange-rates
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = Official Treasury exchange rates.'
          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:
                            record_date:
                              type: string
                            country:
                              type: string
                            currency:
                              type: string
                            country_currency_desc:
                              type: string
                              description: e.g. "Brazil-Real".
                            exchange_rate:
                              type: string
                              description: Units of foreign currency per USD, as a string.
                            effective_date:
                              type: string
                          additionalProperties: true
                          description: Raw Fiscal Data rates-of-exchange row — all values are strings; columns depend on the `fields` projection and may include additional dataset columns.
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      page:
                        type: object
                        properties:
                          number:
                            type: integer
                          size:
                            type: integer
                          pages:
                            type: integer
                            nullable: true
                        required:
                        - number
                        - size
                        - pages
                        additionalProperties: false
                      meta:
                        type: object
                        additionalProperties: {}
                    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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: treasury.exchange-rates
      x-2s-version: null
      x-2s-price:
        usd: 0.003
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.003000'
        protocols:
        - x402: {}
      parameters:
      - name: fields
        in: query
        required: false
        description: Fields.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*(,[a-z][a-z0-9_]*)*$
          maxLength: 400
      - name: filter
        in: query
        required: false
        description: Filter.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+(,[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+)*$
          maxLength: 800
      - name: sort
        in: query
        required: false
        description: Field to sort results by.
        schema:
          type: string
          pattern: ^-?[a-z][a-z0-9_]*(,-?[a-z][a-z0-9_]*)*$
          maxLength: 200
      - name: pageSize
        in: query
        required: false
        description: Number of results to return per page.
        schema:
          type: integer
          minimum: 1
          maximum: 10000
          default: 100
      - name: pageNumber
        in: query
        required: false
        description: Page number (1-based) for paginated results.
        schema:
          type: integer
          minimum: 1
      - $ref: '#/components/parameters/TrialMode'
  /api/treasury/monthly-statement:
    get:
      tags:
      - treasury
      summary: 'Monthly Treasury Statement (MTS) - Table 4: receipts by'
      description: 'Monthly Treasury Statement (MTS) — Table 4: receipts by source via US Treasury Fiscal Data. Returns monthly totals of federal government receipts grouped by classification (individual income tax, corporate income tax, social-insurance receipts, excise, customs, estate-and-gift, miscellaneous). Each row carries record_date, classification_id, classification_desc, current_month + current_fytd (fiscal year-to-date) gross_rcpt / refund / net_rcpt amounts, plus prior_fytd comparisons. Backbone of any "how much money is the federal government bringing in" question. Use Fiscal Data filter syntax.'
      operationId: treasury_monthly-statement
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = Monthly Treasury Statement (Table 4) — federal receipts by source.'
          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:
                            record_date:
                              type: string
                            classification_id:
                              type: string
                            classification_desc:
                              type: string
                              description: Receipt source, e.g. "Individual Income Taxes:".
                            current_month_gross_rcpt_amt:
                              type: string
                            current_month_refund_amt:
                              type: string
                            current_month_net_rcpt_amt:
                              type: string
                            current_fytd_gross_rcpt_amt:
                              type: string
                              description: Fiscal year-to-date.
                            current_fytd_refund_amt:
                              type: string
                            current_fytd_net_rcpt_amt:
                              type: string
                            prior_fytd_gross_rcpt_amt:
                              type: string
                              description: Prior fiscal year-to-date comparison.
                            prior_fytd_refund_amt:
                              type: string
                            prior_fytd_net_rcpt_amt:
                              type: string
                          additionalProperties: true
                          description: Raw Fiscal Data MTS Table 4 row — all values are strings; columns depend on the `fields` projection and may include additional dataset columns.
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                      page:
                        type: object
                        properties:
                          number:
                            type: integer
                          size:
                            type: integer
                          pages:
                            type: integer
                            nullable: true
                        required:
                        - number
                        - size
                        - pages
                        additionalProperties: false
                      meta:
                        type: object
                        additionalProperties: {}
                    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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: treasury.monthly-statement
      x-2s-version: null
      x-2s-price:
        usd: 0.003
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.003000'
        protocols:
        - x402: {}
      parameters:
      - name: fields
        in: query
        required: false
        description: Fields.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*(,[a-z][a-z0-9_]*)*$
          maxLength: 400
      - name: filter
        in: query
        required: false
        description: Filter.
        schema:
          type: string
          pattern: ^[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+(,[a-z][a-z0-9_]*:(eq|ne|lt|lte|gt|gte|in):[A-Za-z0-9._:\-+/, ]+)*$
          maxLength: 800
      - name: sort
        in: query
        required: false
        description: Field to sort results by.
        schema:
          type: string
          pattern: ^-?[a-z][a-z0-9_]*(,-?[a-z][a-z0-9_]*)*$
          maxLength: 200
      - name: pageSize
        in: query
        required: false
        description: Number of results to return per page.
        schema:
          type: integer
          minimum: 1
          maximum: 10000
          default: 100
      - name: pageNumber
        in: query
        required: false
        description: Page number (1-based) for paginated results.
        schema:
          type: integer
          minimum: 1
      - $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.'