{"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. 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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/inflation/calculator":{"get":{"tags":["inflation"],"summary":"Adjust a US dollar amount for inflation between two dates...","description":"Adjust a US dollar amount for inflation between two dates ('what is $100 in 1990 worth today?'). Pass amount, from (YYYY-MM-DD or YYYY), and optional to (defaults to the latest CPI month). Uses CPI-U (CPIAUCNS — the same not-seasonally-adjusted all-items index as the official BLS inflation calculator), data back to 1913. Returns the inflation-adjusted amount, cumulative inflation %, annualized rate, and the CPI index values used on each date. Source: BLS CPI via FRED (St. Louis Fed).","operationId":"inflation_calculator","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"Normalized envelope: items = [the inflation-adjusted result]; total = 1.","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"ok":{"type":"boolean","enum":[true]},"items":{"type":"array","items":{"type":"object","properties":{"amount":{"type":"number"},"from":{"type":"string"},"to":{"type":"string"},"adjustedAmount":{"type":"number"},"cumulativeInflationPct":{"type":"number"},"annualizedPct":{"type":"number","nullable":true},"cpiFrom":{"type":"number"},"cpiFromDate":{"type":"string"},"cpiTo":{"type":"number"},"cpiToDate":{"type":"string"},"seriesId":{"type":"string"}},"required":["amount","from","to","adjustedAmount","cumulativeInflationPct","annualizedPct","cpiFrom","cpiFromDate","cpiTo","cpiToDate","seriesId"],"additionalProperties":false}},"total":{"type":"integer","nullable":true,"description":"Total matching rows upstream; null when unknown."},"source":{"$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":"inflation.calculator","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":"amount","in":"query","required":true,"description":"Amount.","schema":{"type":"number"}},{"name":"from","in":"query","required":true,"description":"Start of the range.","schema":{"type":"string","pattern":"^\\d{4}(-\\d{2}(-\\d{2})?)?$"}},{"name":"to","in":"query","required":false,"description":"End of the range.","schema":{"type":"string","pattern":"^\\d{4}(-\\d{2}(-\\d{2})?)?$"}},{"$ref":"#/components/parameters/TrialMode"}]}},"/api/inflation/expectations":{"get":{"tags":["inflation"],"summary":"Current US inflation expectations - what markets and...","description":"Current US inflation expectations — what markets and consumers expect future inflation to be. Returns the 5-year and 10-year TIPS breakeven rates, the 5-Year/5-Year forward inflation expectation (the Fed-watched long-run gauge), and the University of Michigan 1-year consumer inflation expectation. Each value is a percent as of its latest date. Market-based breakevens update daily. Source: Federal Reserve / Treasury via FRED (St. Louis Fed).","operationId":"inflation_expectations","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"Normalized envelope: items = expectation gauges (each a percent); total = gauges returned.","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"ok":{"type":"boolean","enum":[true]},"items":{"type":"array","items":{"type":"object","properties":{"measure":{"type":"string"},"seriesId":{"type":"string"},"label":{"type":"string"},"rate":{"type":"number","nullable":true,"description":"Expected inflation, percent."},"asOf":{"type":"string","nullable":true}},"required":["measure","seriesId","label","rate","asOf"],"additionalProperties":false}},"total":{"type":"integer","nullable":true,"description":"Total matching rows upstream; null when unknown."},"source":{"$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":"inflation.expectations","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":[{"$ref":"#/components/parameters/TrialMode"}]}},"/api/inflation/hicp":{"get":{"tags":["inflation"],"summary":"EU harmonized inflation - the latest HICP annual rate of...","description":"EU harmonized inflation — the latest HICP annual rate of change (the official, cross-country-comparable inflation rate) for the EU, euro area, and each member state. Pass country as a Eurostat geo code (DE, FR, EL for Greece, EA20 = euro area, EU27_2020 = EU) for one, or omit for all (sorted highest inflation first). All-items index (COICOP CP00). Source: Eurostat (free, no key). For US inflation use inflation.rates.","operationId":"inflation_hicp","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"Normalized envelope: items = HICP annual rates by geo (all-items); total = rows returned.","content":{"application/json":{"schema":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","properties":{"ok":{"type":"boolean","enum":[true]},"items":{"type":"array","items":{"type":"object","properties":{"geo":{"type":"string","description":"Eurostat geo code."},"area":{"type":"string","description":"Country / aggregate name."},"annualRatePct":{"type":"number","nullable":true,"description":"HICP annual rate of change (inflation rate), percent."},"period":{"type":"string","nullable":true,"description":"Reference month (YYYY-MM)."}},"required":["geo","area","annualRatePct","period"],"additionalProperties":false}},"total":{"type":"integer","nullable":true,"description":"Total matching rows upstream; null when unknown."},"source":{"$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":"inflation.hicp","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":"country","in":"query","required":false,"description":"Country name or ISO country code.","schema":{"type":"string","minLength":2,"maxLength":10,"pattern":"^[A-Za-z0-9_]+$"}},{"$ref":"#/components/parameters/TrialMode"}]}},"/api/inflation/rates":{"get":{"tags":["inflation"],"summary":"Current US inflation rates by measure, with the index level...","description":"Current US inflation rates by measure, with the index level plus computed year-over-year and month-over-month % change. Pass measure for one, or omit for all. Measures: cpi, cpi-nsa, core-cpi, cpi-w, pce, core-pce, ppi, cpi-food, cpi-energy, cpi-shelter, cpi-medical, import-prices, export-prices — i.e. headline CPI (SA + NSA), core CPI, CPI-W, PCE, core PCE (the Fed's 2% target gauge), PPI final demand, and CPI by category (food, energy, shelter, medical) + import/export prices. The YoY change is the headline \"inflation rate\". Each result names the FRED series ID used. Source: BLS/BEA via FRED (St. Louis Fed). For raw access to any other series use bls.series; this is the curated, rate-computed layer.","operationId":"inflation_rates","deprecated":false,"security":[{"x402Payment":[]}],"responses":{"200":{"description":"Normalized envelope: items = inflation measures (index + YoY/MoM); total = measures returned.","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":{"measure":{"type":"string"},"seriesId":{"type":"string"},"label":{"type":"string"},"index":{"type":"number","nullable":true,"description":"The price-index level."},"asOf":{"type":"string","nullable":true,"description":"Date of the latest observation."},"changeMoM":{"type":"number","nullable":true,"description":"% change vs the prior period."},"changeYoY":{"type":"number","nullable":true,"description":"% change vs ~1 year earlier — the inflation rate."}},"required":["measure","seriesId","label","index","asOf","changeMoM","changeYoY"],"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":{"$ref":"#/components/responses/UpstreamError"}},"x-2s-id":"inflation.rates","x-2s-version":null,"x-2s-price":{"usd":0.0036},"x-2s-accepts":["x402"],"x-2s-response-shape":"normalized","x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"0.003600"},"protocols":[{"x402":{}}]},"parameters":[{"name":"measure","in":"query","required":false,"description":"Measure.","schema":{"type":"string","enum":["cpi","cpi-nsa","core-cpi","cpi-w","pce","core-pce","ppi","cpi-food","cpi-energy","cpi-shelter","cpi-medical","import-prices","export-prices"]}},{"$ref":"#/components/parameters/TrialMode"}]}}}}