{"openapi":"3.1.0","info":{"title":"2s — the (most) everything API","version":"1","summary":"The (most) everything API.","description":"The (most) everything API for AI agents: 575+ pay-per-call endpoints on one origin. More live, ground-truth data than any other x402 service — public records, finance & SEC filings, crypto & web3, security & CVEs, legal, medical, weather, geocoding, and B2B/EDI. A full AI gateway: chat, image, and multi-model consensus across every major model, priced per request in the 402 before you pay. And agent infrastructure with no account: wallet-scoped storage (kv/docs/vectors/files), locks, queues, scheduled callbacks, pub/sub, and watchers that push signed webhooks when the world changes. Pay per call in USDC on Base or Solana via x402 — no API keys, no signup, no subscription. The first x402 API with upto billing: on AI endpoints, authorize the quoted max and settle only your actual usage. Try before you buy: add ?trial=1 (or header X-2s-Trial: 1) to any endpoint for one free real call per endpoint per hour — no wallet needed. New endpoints land constantly.","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 $0.001). Batch up to 50 calls behind one payment via POST https://2s.io/api/batch/run."},"servers":[{"url":"https://2s.io"}],"components":{"responses":{"BadRequest":{"description":"Bad request — invalid parameters."},"PaymentRequired":{"description":"Payment required. Body contains the x402 PaymentRequirements envelope with a multi-network accepts array; the per-call price is in accepts[].amount (and on the operation as x-2s-price). Sign for whichever rail you hold USDC on (EIP-3009 for Base, partial SPL transfer for Solana) and retry with the PAYMENT-SIGNATURE header (X-PAYMENT also accepted for v1 clients).","content":{"application/json":{"schema":{"$ref":"#/components/schemas/X402PaymentRequiredV2"}}}},"MethodNotAllowed":{"description":"Method not allowed — see `Allow` header for the supported method."},"ServerError":{"description":"Internal server error."},"UpstreamError":{"description":"Upstream provider error."}},"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."}},"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}}}}},"paths":{"/api/iso/currency":{"get":{"tags":["iso"],"summary":"Look up an ISO 4217 currency.","description":"Look up an ISO 4217 currency. Pass code (alphabetic like USD, or 3-digit numeric like 840) for the canonical record, or country to find the currency/currencies a country uses. Returns the alphabetic + numeric code, English name, minor unit (decimal places — e.g. JPY 0, USD 2, BHD 3), and the countries using it. Bundled authoritative ISO 4217 data — the currency-code + decimal-places ground truth an LLM gets wrong on less-common currencies.","operationId":"iso_currency","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"query":{"type":"object","properties":{"code":{"type":"string","nullable":true},"country":{"type":"string","nullable":true}},"required":["code","country"],"additionalProperties":false},"found":{"type":"boolean"},"currencies":{"type":"array","items":{"type":"object","properties":{"code":{"type":"string"},"name":{"type":"string"},"numeric":{"type":"string","nullable":true},"minorUnit":{"type":"number","nullable":true},"countries":{"type":"array","items":{"type":"string"}}},"required":["code","name","numeric","minorUnit","countries"],"additionalProperties":false}},"source":{"$ref":"#/components/schemas/Source"}},"required":["query","found","currencies","source"],"additionalProperties":false},"meta":{"$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":{"$ref":"#/components/responses/UpstreamError"}},"x-2s-id":"iso.currency","x-2s-version":null,"x-2s-price":{"usd":0.003},"x-2s-accepts":["x402"],"x-2s-response-shape":"legacy","x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.003000"},"protocols":[{"x402":{}}]},"parameters":[{"name":"code","in":"query","required":false,"description":"Code to look up.","schema":{"type":"string","minLength":2,"maxLength":4}},{"name":"country","in":"query","required":false,"description":"Country name or ISO country code.","schema":{"type":"string","minLength":2,"maxLength":60}},{"$ref":"#/components/parameters/TrialMode"}]}},"/api/iso/language":{"get":{"tags":["iso"],"summary":"Look up an ISO 639 language.","description":"Look up an ISO 639 language. Pass code in any form — 639-1 (en), 639-2/B (ger) or 639-2/T (deu) — or name (English, partial match). Returns the English name and all sibling codes (alpha-2, alpha3-B, alpha3-T), so you can normalize a messy language tag to canonical ISO identifiers and resolve the bibliographic-vs-terminological alpha-3 split (e.g. German = de / deu / ger). Bundled authoritative ISO 639 data.","operationId":"iso_language","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"query":{"type":"object","properties":{"code":{"type":"string","nullable":true},"name":{"type":"string","nullable":true}},"required":["code","name"],"additionalProperties":false},"found":{"type":"boolean"},"languages":{"type":"array","items":{"type":"object","properties":{"alpha3b":{"type":"string","nullable":true},"alpha3t":{"type":"string","nullable":true},"alpha2":{"type":"string","nullable":true},"name":{"type":"string"}},"required":["alpha3b","alpha3t","alpha2","name"],"additionalProperties":false}},"source":{"$ref":"#/components/schemas/Source"}},"required":["query","found","languages","source"],"additionalProperties":false},"meta":{"$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":{"$ref":"#/components/responses/UpstreamError"}},"x-2s-id":"iso.language","x-2s-version":null,"x-2s-price":{"usd":0.003},"x-2s-accepts":["x402"],"x-2s-response-shape":"legacy","x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.003000"},"protocols":[{"x402":{}}]},"parameters":[{"name":"code","in":"query","required":false,"description":"Code to look up.","schema":{"type":"string","minLength":2,"maxLength":3}},{"name":"name","in":"query","required":false,"description":"Name to search for.","schema":{"type":"string","minLength":2,"maxLength":60}},{"$ref":"#/components/parameters/TrialMode"}]}},"/api/iso/subdivision":{"get":{"tags":["iso"],"summary":"Look up ISO 3166-2 subdivisions (states, provinces, regions).","description":"Look up ISO 3166-2 subdivisions (states, provinces, regions). Pass code (e.g. US-CA) to resolve a single subdivision → name + country, or country (2-letter ISO 3166-1, e.g. US) to list all of that country's subdivisions with their codes. Bundled authoritative ISO 3166-2 data (~3.8k subdivisions across 237 countries) — the address/jurisdiction ground truth an LLM hallucinates codes for.","operationId":"iso_subdivision","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"query":{"type":"object","properties":{"code":{"type":"string","nullable":true},"country":{"type":"string","nullable":true}},"required":["code","country"],"additionalProperties":false},"found":{"type":"boolean"},"subdivision":{"type":"object","properties":{"code":{"type":"string"},"name":{"type":"string"},"country":{"type":"string"}},"required":["code","name","country"],"additionalProperties":false,"nullable":true},"country":{"type":"string","nullable":true},"subdivisions":{"type":"array","items":{"type":"object","properties":{"code":{"type":"string"},"name":{"type":"string"},"country":{"type":"string"}},"required":["code","name","country"],"additionalProperties":false}},"source":{"$ref":"#/components/schemas/Source"}},"required":["query","found","subdivision","country","subdivisions","source"],"additionalProperties":false},"meta":{"$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":{"$ref":"#/components/responses/UpstreamError"}},"x-2s-id":"iso.subdivision","x-2s-version":null,"x-2s-price":{"usd":0.003},"x-2s-accepts":["x402"],"x-2s-response-shape":"legacy","x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.003000"},"protocols":[{"x402":{}}]},"parameters":[{"name":"code","in":"query","required":false,"description":"Code to look up.","schema":{"type":"string","minLength":4,"maxLength":6}},{"name":"country","in":"query","required":false,"description":"Country name or ISO country code.","schema":{"type":"string","minLength":2,"maxLength":2}},{"$ref":"#/components/parameters/TrialMode"}]}}}}