{"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/nonprofit/screen":{"get":{"tags":["nonprofit"],"summary":"Look up US 501(c) nonprofits and screen each result against...","description":"Look up US 501(c) nonprofits and screen each result against the OFAC sanctions list in one call. Pass q (organization name) or ein; each matched organization returns its registry record (EIN, name, location, NTEE code, subsection) plus a sanctions block — flagged status, match count, and the matching SDN entries with confidence scores. Grant-making due diligence, donation compliance, and charity-fraud triage. Components also standalone: /api/nonprofit/search (registry only) and /api/law/sanctions-check (screen any name). Same composition family as /api/business/entity-screen.","operationId":"nonprofit_screen","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"Nonprofits with a per-org OFAC sanctions block (flagged, matches, confidence).","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"query":{"type":"string"},"count":{"type":"number"},"organizations":{"type":"array","items":{"type":"object","properties":{"org":{"type":"object","additionalProperties":{},"description":"Nonprofit registry record (EIN, name, location, NTEE)."},"sanctions":{"type":"object","properties":{"found":{"type":"boolean","description":"True when the screen ran successfully."},"error":{"type":"string","nullable":true},"flagged":{"type":"boolean","description":"True when a high-confidence OFAC match exists."},"matchCount":{"type":"number"},"matches":{"type":"array","items":{"type":"object","additionalProperties":{}}}},"required":["found","error","flagged","matchCount","matches"],"additionalProperties":false}},"required":["org","sanctions"],"additionalProperties":false}},"sources":{"type":"array","items":{"$ref":"#/components/schemas/Source"}}},"required":["query","count","organizations","sources"],"additionalProperties":false},"meta":{"$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":{"$ref":"#/components/responses/UpstreamError"}},"x-2s-id":"nonprofit.screen","x-2s-version":null,"x-2s-price":{"usd":0.0126},"x-2s-accepts":["x402"],"x-2s-response-shape":"legacy","x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.012600"},"protocols":[{"x402":{}}]},"parameters":[{"name":"q","in":"query","required":false,"description":"Organization name. Provide q or ein, not both.","schema":{"type":"string","minLength":2,"maxLength":120}},{"name":"ein","in":"query","required":false,"description":"EIN.","schema":{"type":"string","pattern":"^\\d{9}$"}},{"name":"limit","in":"query","required":false,"description":"Maximum number of results to return.","schema":{"type":"integer","minimum":1,"maximum":10,"default":5}},{"$ref":"#/components/parameters/TrialMode"}]}},"/api/nonprofit/search":{"get":{"tags":["nonprofit"],"summary":"US 501(c) nonprofit organization search.","description":"US 501(c) nonprofit organization search. Lookup by 9-digit EIN (with or without hyphen), free-text name, 2-letter state, NTEE category code (e.g. 'B99' for education), or IRS subsection code (3 = 501(c)(3), 4 = 501(c)(4), etc.). Each record includes EIN, name, city/state, NTEE code, subsection code + human-readable subsection description (e.g. '501(c)(3) Charitable / Religious / Educational'), and relevance score. Sourced from ProPublica Nonprofit Explorer, which aggregates IRS Form 990 + BMF data; underlying IRS data is public domain.","operationId":"nonprofit_search","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"Normalized envelope: items = matching nonprofit organizations; total = upstream match count; page = 0-indexed pagination (100/page); meta.query echoes the search.","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"ok":{"type":"boolean","enum":[true]},"items":{"type":"array","items":{"type":"object","properties":{"ein":{"type":"string"},"einFormatted":{"type":"string"},"name":{"type":"string"},"subName":{"type":"string","nullable":true},"city":{"type":"string","nullable":true},"state":{"type":"string","nullable":true},"nteeCode":{"type":"string","nullable":true},"subsectionCode":{"type":"integer","nullable":true},"subsectionDesc":{"type":"string","nullable":true},"score":{"type":"number","nullable":true}},"required":["ein","einFormatted","name","subName","city","state","nteeCode","subsectionCode","subsectionDesc","score"],"additionalProperties":false}},"total":{"type":"integer","nullable":true,"description":"Total matching rows upstream; null when unknown."},"source":{"$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},"meta":{"type":"object","properties":{"query":{"type":"object","properties":{"q":{"type":"string","nullable":true},"ein":{"type":"string","nullable":true},"state":{"type":"string","nullable":true},"nteeCode":{"type":"string","nullable":true},"subsectionCode":{"type":"integer","nullable":true},"page":{"type":"integer"}},"required":["q","ein","state","nteeCode","subsectionCode","page"],"additionalProperties":false},"returned":{"type":"integer"}},"required":["query","returned"],"additionalProperties":false}},"required":["ok","items","total","source"],"additionalProperties":false},"meta":{"$ref":"#/components/schemas/CallMeta"}}}}}},"400":{"$ref":"#/components/responses/BadRequest"},"402":{"$ref":"#/components/responses/PaymentRequired"},"405":{"$ref":"#/components/responses/MethodNotAllowed"},"500":{"$ref":"#/components/responses/ServerError"},"502":{"$ref":"#/components/responses/UpstreamError"}},"x-2s-id":"nonprofit.search","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":"q","in":"query","required":false,"description":"Free-text search query.","schema":{"type":"string","minLength":2,"maxLength":200}},{"name":"ein","in":"query","required":false,"description":"EIN.","schema":{"type":"string","minLength":9,"maxLength":11,"pattern":"^\\d{2}-?\\d{7}$"}},{"name":"state","in":"query","required":false,"description":"US state — two-letter postal abbreviation (e.g. CA) or full name.","schema":{"type":"string","minLength":2,"maxLength":2,"pattern":"^[A-Za-z]{2}$"}},{"name":"nteeCode","in":"query","required":false,"description":"Ntee code.","schema":{"type":"string","pattern":"^[A-Za-z][0-9]{1,3}$"}},{"name":"subsectionCode","in":"query","required":false,"description":"Subsection code.","schema":{"type":"integer","minimum":2,"maximum":92}},{"name":"page","in":"query","required":false,"description":"Page number (1-based) for paginated results.","schema":{"type":"integer","minimum":0,"maximum":99,"default":0}},{"$ref":"#/components/parameters/TrialMode"}]}}}}