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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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2,935 results- Xx402-v2-mint-zip-code-lookup.vercel.appOther services
Postal code lookup via api.zippopotam.us (keyless). Country + postal → places (name/state/lat/lon).
Basex402-v2-mint-zip-code-lookup.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-whois-rdap.vercel.appDeveloper tools
Domain RDAP via IANA DNS bootstrap. Registrar/NS/status/events. SSRF-safe.
Basex402-v2-mint-whois-rdap.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-uuid-mint.vercel.appOther services
Mint 1-32 UUID v4 / v7 / ULID identifiers (v1 kept). Offline. Amp port + Wave 21 kinds.
Basex402-v2-mint-uuid-mint.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-usgs-water-flow.vercel.appOther services
USGS NWIS instantaneous values (keyless). sites or stateCd (+ parameterCd default discharge 00060) → trimmed IV series.
Basex402-v2-mint-usgs-water-flow.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-url-normalize.vercel.appOther services
Canonicalize URL: force HTTPS, strip tracking, lowercase host, sort query. Offline. Amp port.
Basex402-v2-mint-url-normalize.vercel.appfrom $0.0051 endpoint - Xx402-v2-mint-tx-status.vercel.appCrypto & DeFi
Transaction receipt status/block/confirmations on Base or Ethereum via eth_getTransactionReceipt. Validates 0x hash BEFORE settle.
Basex402-v2-mint-tx-status.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-slugify.vercel.appOther services
Turn free text into a URL-safe lowercase slug. Offline. Amp port.
Basex402-v2-mint-slugify.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-similarity-dedupe.vercel.appOther services
Lexical similarity suite: Levenshtein, Jaro-Winkler, Jaccard, SimHash Hamming + duplicate verdict. No embeddings.
Basex402-v2-mint-similarity-dedupe.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-safe-math.vercel.appDeveloper tools
Exact decimal/rational math with optional units + step trace. AST-sandboxed (no eval).
Basex402-v2-mint-safe-math.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-rag-chunker.vercel.appCrypto & DeFi
Token-aware text chunks with heading path inheritance and stable sha256 chunk ids (cl100k).
Basex402-v2-mint-rag-chunker.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-pii-redact.vercel.appDeveloper tools
Deterministic PII redaction: emails, phones, SSN-shaped, Luhn cards, IPv4 → typed placeholders. No network. Amp port.
Basex402-v2-mint-pii-redact.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-phone-e164.vercel.appOther services
Parse/validate/format phone to E.164 via libphonenumber offline. No owner/carrier lookup.
Basex402-v2-mint-phone-e164.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-name-resolve.vercel.appCrypto & DeFi
ENS (.eth) + Basename (.base.eth) forward/reverse resolution on Base/Ethereum public RPC. Avatar optional. Amp port.
Basex402-v2-mint-name-resolve.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-moderation-brand-safety.vercel.appAI & agents
Brand-safety / moderation scores per category + offending spans + threshold pass/fail + model version. NOT a legal judgment. OpenRouter free-first (Detoxify too heavy for serverless).
Basex402-v2-mint-moderation-brand-safety.vercel.appfrom $0.0041 endpoint - Xx402-v2-mint-mac-vendor.vercel.appOther services
MAC/OUI vendor lookup via api.macvendors.com (keyless). Input MAC or OUI → vendor + normalized OUI.
Basex402-v2-mint-mac-vendor.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-json-toolkit.vercel.appOther services
JSON Pointer get, RFC 6902 patch, RFC 7396 merge-patch, structural diff, path list. Offline.
Basex402-v2-mint-json-toolkit.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-itunes-search.vercel.appSearch & web
iTunes Search API (keyless). term (+ media/entity/limit/country) → trimmed track/collection/artist results.
Basex402-v2-mint-itunes-search.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-iban-bic-validate.vercel.appSearch & web
Offline IBAN MOD-97 (ISO 13616) + BIC/SWIFT format check. No SWIFT directory scrape.
Basex402-v2-mint-iban-bic-validate.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-github-repo-meta.vercel.appAI & agents
GitHub repo metadata (keyless, User-Agent required). owner/repo → stars/forks/language/license. Soft-fail 403 rate.
Basex402-v2-mint-github-repo-meta.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-fx-spot-rate.vercel.appMarkets & finance
ECB FX spot via Frankfurter (keyless). Pair or base→quotes. Data only — not advice.
Basex402-v2-mint-fx-spot-rate.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-fda-drug-label.vercel.appSearch & web
openFDA drug label search (keyless). search (+ limit) → trimmed labels (openfda brand/generic, indications, warnings subset).
Basex402-v2-mint-fda-drug-label.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-erc20-meta.vercel.appCrypto & DeFi
ERC-20 name/symbol/decimals/totalSupply (+ optional balanceOf) via multicall3 on Base or Ethereum. 400 if not a contract. Amp port.
Basex402-v2-mint-erc20-meta.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-epoch-convert.vercel.appDeveloper tools
Epoch s/ms/us/ns or ISO-8601 ↔ epoch_s/ms + ISO UTC + any IANA tz. Offline. Amp port.
Basex402-v2-mint-epoch-convert.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-email-deliverability.vercel.appDeveloper tools
Email deliverability (MX/SPF/DMARC via DoH). No SMTP mailbox probe. No charge on empty/failed.
Basex402-v2-mint-email-deliverability.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-echo-sha256.vercel.appOther services
Echo JSON body and return sha256 of sorted serialization.
Basex402-v2-mint-echo-sha256.vercel.appfrom $0.0011 endpoint - Xx402-v2-mint-earthquake-feed.vercel.appOther services
USGS earthquake GeoJSON feed (keyless). Window day|week|month (significant preferred) → quake list.
Basex402-v2-mint-earthquake-feed.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-dns-lookup.vercel.appDeveloper tools
DNS via Cloudflare/Google DoH: A/AAAA/MX/TXT/NS/CAA + optional SPF/DMARC parse. No mailbox probing.
Basex402-v2-mint-dns-lookup.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-date-time-toolkit.vercel.appDeveloper tools
Relative date parse, ISO 8601 duration math, IANA timezone convert with DST flags. Offline tzdata.
Basex402-v2-mint-date-time-toolkit.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-datamuse-words.vercel.appData & research
Word suggestions via Datamuse (keyless). ml/sp/rel_* (+ max) → trimmed word list.
Basex402-v2-mint-datamuse-words.vercel.appfrom $0.0021 endpoint - Xx402-v2-mint-cron-next.vercel.appDeveloper tools
Next 1-20 run times for a 5-field cron expression (IANA tz, DST-aware). Offline. Amp port.
Basex402-v2-mint-cron-next.vercel.appfrom $0.00311 endpoint
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.