openapi: 3.2.0
info:
  title: 2s — the (most) everything Trade 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: Trade
paths:
  /api/trade/commodity-resolve:
    get:
      tags:
      - Trade
      summary: Cross-walk a traded-good code across HS (6-digit
      description: Cross-walk a traded-good code across HS (6-digit international Harmonized System) HTS (US 10-digit import) Schedule B (US 10-digit export) NAICS industry. Pass the system + code and get the shared HS6, the official description, the matching Schedule B and HTS national lines, the NAICS industry(ies), and the SITC code. The join an import/export, customs, or supply-chain agent needs to move between the export schedule, the import tariff schedule, the international HS level, and the industry that makes the good -- all keyed on the globally-harmonized HS6 bridge. Backed by bundled public-domain US Census Foreign Trade concordances (Schedule B + HTS, latest annual). For a 10-digit input the NAICS is narrowed to that exact national line; cross-schedule lines are surfaced via the shared HS6 and flagged in notes. Companion to trade.tariff (duty rates) and business.naics (industry detail).
      operationId: trade_commodity-resolve
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = [one commodity crosswalked across HS/HTS/Schedule B/NAICS via the HS6 bridge]; total = 1.'
          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:
                            resolvedFrom:
                              type: string
                              enum:
                              - hs
                              - hts
                              - scheduleb
                            input:
                              type: string
                            hs6:
                              type: string
                              nullable: true
                            description:
                              type: string
                              nullable: true
                            naics:
                              type: array
                              items:
                                type: string
                            sitc:
                              type: array
                              items:
                                type: string
                            scheduleB:
                              type: array
                              items:
                                type: string
                              description: US export (Schedule B) 10-digit lines under this HS6.
                            hts:
                              type: array
                              items:
                                type: string
                              description: US import (HTS) 10-digit lines under this HS6.
                            notes:
                              type: array
                              items:
                                type: string
                          required:
                          - resolvedFrom
                          - input
                          - hs6
                          - description
                          - naics
                          - sitc
                          - scheduleB
                          - hts
                          - notes
                          additionalProperties: false
                      total:
                        type: integer
                        nullable: true
                        description: Total matching rows upstream; null when unknown.
                      source:
                        $ref: '#/components/schemas/Source'
                    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: trade.commodity-resolve
      x-2s-version: null
      x-2s-price:
        usd: 0.009
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.009000'
        protocols:
        - x402: {}
      parameters:
      - name: system
        in: query
        required: true
        description: 'Which system the input code is in: hs (6-digit intl), hts (US import), scheduleb (US export).'
        schema:
          type: string
          enum:
          - hs
          - hts
          - scheduleb
      - name: code
        in: query
        required: true
        description: The commodity code, dots optional, e.g. 090121, 0901210000, or 8703.23.00.
        schema:
          type: string
          minLength: 4
          maxLength: 14
      - $ref: '#/components/parameters/TrialMode'
  /api/trade/flows:
    get:
      tags:
      - Trade
      summary: Annual international merchandise-trade flows from UN
      description: 'Annual international merchandise-trade flows from UN Comtrade (HS classification). Pass reporter (the country whose trade you want; ISO-2/ISO-3 like ''US''/''USA'', a UN M49 number, or ''World''), optional partner (counterparty; default World), year (YYYY), flow (export|import), and commodity: ''TOTAL'' (all goods, default), a specific HS code (''27'', ''8703''), or ''AG2''/''AG4''/''AG6'' for a top-commodity breakdown at the 2/4/6-digit level. Returns trade value (USD), net weight, quantity, and the HS commodity, sorted by value. Country names are resolved from Comtrade''s own reference data.'
      operationId: trade_flows
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = trade-flow records (sorted by value desc); total = upstream row count; meta.query echoes the resolved request (incl. M49 codes).'
          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:
                            reporter:
                              type: string
                              nullable: true
                            reporterIso:
                              type: string
                              nullable: true
                            partner:
                              type: string
                              nullable: true
                            partnerIso:
                              type: string
                              nullable: true
                            flow:
                              type: string
                              nullable: true
                            period:
                              type: string
                              nullable: true
                            commodityCode:
                              type: string
                              nullable: true
                            commodity:
                              type: string
                              nullable: true
                            valueUsd:
                              type: number
                              nullable: true
                            netWeightKg:
                              type: number
                              nullable: true
                            quantity:
                              type: number
                              nullable: true
                            quantityUnit:
                              type: string
                              nullable: true
                          required:
                          - reporter
                          - reporterIso
                          - partner
                          - partnerIso
                          - flow
                          - period
                          - commodityCode
                          - commodity
                          - valueUsd
                          - netWeightKg
                          - quantity
                          - quantityUnit
                          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:
                              reporter:
                                type: string
                              reporterCode:
                                type: integer
                              partner:
                                type: string
                              partnerCode:
                                type: integer
                              year:
                                type: string
                              flow:
                                type: string
                              commodity:
                                type: string
                            required:
                            - reporter
                            - reporterCode
                            - partner
                            - partnerCode
                            - year
                            - flow
                            - commodity
                            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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: trade.flows
      x-2s-version: null
      x-2s-price:
        usd: 0.009
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.009000'
        protocols:
        - x402: {}
      parameters:
      - name: reporter
        in: query
        required: true
        description: 'Reporting country: ISO-2/ISO-3 ("US"/"USA"), UN M49 number, or "World".'
        schema:
          type: string
          minLength: 2
          maxLength: 40
      - name: partner
        in: query
        required: false
        description: Partner/counterparty country (same formats). Default "World" (all partners aggregated).
        schema:
          type: string
          minLength: 2
          maxLength: 40
          default: World
      - name: year
        in: query
        required: true
        description: Calendar year (YYYY). Comtrade annual data typically lags ~6-12 months.
        schema:
          type: string
          pattern: ^\d{4}$
      - name: flow
        in: query
        required: false
        description: Trade direction from the reporter's perspective. Default export.
        schema:
          type: string
          enum:
          - export
          - import
          default: export
      - name: commodity
        in: query
        required: false
        description: '"TOTAL" (all goods, default), a specific HS code ("27", "8703"), or "AG2"/"AG4"/"AG6" for a top-commodity breakdown.'
        schema:
          type: string
          minLength: 2
          maxLength: 8
          default: TOTAL
      - name: limit
        in: query
        required: false
        description: Max rows to return (1-100), sorted by trade value desc. Default 25.
        schema:
          type: integer
          minimum: 1
          maximum: 100
          default: 25
      - $ref: '#/components/parameters/TrialMode'
  /api/trade/locode:
    get:
      tags:
      - Trade
      summary: Look up or search UN/LOCODE - the United Nations Code for
      description: 'Look up or search UN/LOCODE — the United Nations Code for Trade and Transport Locations (~116k locations, all countries). Pass `locode` for an exact code (e.g. USNYC or ''US NYC''). Or pass `query` to search location names, optionally filtered by `country` (ISO 3166 alpha-2) and `function` (port, rail, road, airport, postal, multimodal, fixed, border). Each result: locode, name, country, subdivision, transport functions, entry status, IATA code where it differs, and coordinates. UN/LOCODE is the standard location identifier in shipping schedules, EDI messages, and customs documents.'
      operationId: trade_locode
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = UN/LOCODE entries (single exact match, or ranked name-search results); total = match count.'
          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:
                            locode:
                              type: string
                              description: 5-character UN/LOCODE (country + location).
                            country:
                              type: string
                              description: ISO 3166 alpha-2 country code.
                            location:
                              type: string
                              description: 3-character location part of the code.
                            name:
                              type: string
                              description: Place name (with diacritics).
                            nameAscii:
                              type: string
                              description: Place name without diacritics.
                            subdivision:
                              type: object
                              properties:
                                code:
                                  type: string
                                name:
                                  type: string
                                  nullable: true
                              required:
                              - code
                              - name
                              additionalProperties: false
                              nullable: true
                              description: ISO 3166-2 subdivision (state/province), when assigned.
                            functions:
                              type: object
                              properties:
                                raw:
                                  type: string
                                  description: Raw 8-position UN/LOCODE function classifier.
                                list:
                                  type: array
                                  items:
                                    type: string
                                  description: Decoded transport functions (port, rail terminal, airport, …).
                              required:
                              - raw
                              - list
                              additionalProperties: false
                            status:
                              type: object
                              properties:
                                code:
                                  type: string
                                meaning:
                                  type: string
                                  nullable: true
                              required:
                              - code
                              - meaning
                              additionalProperties: false
                              nullable: true
                              description: Entry status code + meaning (e.g. AA = approved by national agency).
                            iata:
                              type: string
                              nullable: true
                              description: IATA code, only when it differs from the location part.
                            coordinates:
                              type: object
                              properties:
                                lat:
                                  type: number
                                lon:
                                  type: number
                              required:
                              - lat
                              - lon
                              additionalProperties: false
                              nullable: true
                            updated:
                              type: string
                              nullable: true
                              description: Last-change marker from the source list (YYMM).
                          required:
                          - locode
                          - country
                          - location
                          - name
                          - nameAscii
                          - subdivision
                          - functions
                          - status
                          - iata
                          - coordinates
                          - updated
                          additionalProperties: false
                      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
                    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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: trade.locode
      x-2s-version: null
      x-2s-price:
        usd: 0.0025
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.002500'
        protocols:
        - x402: {}
      parameters:
      - name: locode
        in: query
        required: false
        description: Exact UN/LOCODE to look up (e.g. USNYC or 'US NYC'). Pass this OR query.
        schema:
          type: string
          pattern: ^[A-Za-z]{2}[\s-]?[A-Za-z0-9]{3}$
      - name: query
        in: query
        required: false
        description: Location name to search (e.g. Rotterdam). Pass this OR locode.
        schema:
          type: string
          minLength: 2
          maxLength: 120
      - name: country
        in: query
        required: false
        description: Restrict query-mode results to one country (ISO 3166 alpha-2, e.g. NL).
        schema:
          type: string
          pattern: ^[A-Za-z]{2}$
      - name: function
        in: query
        required: false
        description: Restrict query-mode results to locations with this transport function.
        schema:
          type: string
          enum:
          - port
          - rail
          - road
          - airport
          - postal
          - multimodal
          - fixed
          - border
      - name: limit
        in: query
        required: false
        description: Max query-mode results, 1–50 (default 10).
        schema:
          type: integer
          minimum: 1
          maximum: 50
      - $ref: '#/components/parameters/TrialMode'
  /api/trade/tariff:
    get:
      tags:
      - Trade
      summary: Look up or search the US Harmonized Tariff Schedule (HTS /
      description: 'Look up or search the US Harmonized Tariff Schedule (HTS / HS codes). Pass `code` for an exact HTS number (dots optional) — returns that line plus its 10-digit statistical suffixes with duty rates. Or pass `query` for free-text search (e.g. ''electric toothbrush'', ''roasted coffee'') → ranked candidate HS codes by hierarchical heading. Each result: htsno, chapter, description, full heading path, units, and duty rates (general/MFN, special/FTA, column-2). ~29.6k lines, public-domain USITC data. The deterministic backbone for tariff classification in import/export and ERP item setup.'
      operationId: trade_tariff
      deprecated: false
      security:
      - x402Payment: []
      responses:
        '200':
          description: 'Normalized envelope: items = HTS lines (exact match + suffixes, or ranked search candidates); total = match count.'
          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:
                            htsno:
                              type: string
                            chapter:
                              type: string
                              nullable: true
                            description:
                              type: string
                              nullable: true
                            heading:
                              type: string
                              nullable: true
                              description: Full hierarchical heading path (ancestors > leaf).
                            units:
                              type: array
                              items:
                                type: string
                              nullable: true
                            duty:
                              type: object
                              properties:
                                general:
                                  type: string
                                  nullable: true
                                  description: General (MFN) duty rate.
                                special:
                                  type: string
                                  nullable: true
                                  description: Special (FTA / preference) rate.
                                other:
                                  type: string
                                  nullable: true
                                  description: Column 2 rate.
                              required:
                              - general
                              - special
                              - other
                              additionalProperties: false
                          required:
                          - htsno
                          - chapter
                          - description
                          - heading
                          - units
                          - duty
                          additionalProperties: false
                      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
                    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':
          $ref: '#/components/responses/UpstreamError'
      x-2s-id: trade.tariff
      x-2s-version: null
      x-2s-price:
        usd: 0.0045
      x-2s-accepts:
      - x402
      x-2s-response-shape: normalized
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.004500'
        protocols:
        - x402: {}
      parameters:
      - name: code
        in: query
        required: false
        description: Code to look up.
        schema:
          type: string
          pattern: ^[0-9.\s]{4,14}$
      - name: query
        in: query
        required: false
        description: Free-text search query.
        schema:
          type: string
          minLength: 2
          maxLength: 120
      - name: limit
        in: query
        required: false
        description: Maximum number of results to return.
        schema:
          type: integer
          minimum: 1
          maximum: 50
      - $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.'