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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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4,150 results- Aapi.callmeter.devOther services
Paid skill agentutils.schema
BaseBase Sepoliaapi.callmeter.devfrom $0.021 endpoint
BotPay NFT MintCrypto & DeFiMint a BotPay NFT on Base after an x402 USDC payment.
BaseSolanaapi.botpay.networkfrom $0.013 endpoints- Aapi.borisinc.comOther services
No description yet.
BaseSolanaPolygon+1api.borisinc.comfrom $0.0011 endpoint - Aapi.automatonsvrn.xyzOther services
Automaton-Sovereign Value API call
Baseapi.automatonsvrn.xyzfrom $0.0011 endpoint - Aapi.aizamon.comOther services
Polymarket vs Kalshi arbitrage / cross-venue mispricing gap card — $0.25 Bot Fuel. Top spread + net-edge for trading bots. Inline JSON. Scale via pack/day.
Baseapi.aizamon.comfrom $0.251 endpoint - Aapi.agentic-swarm-marketplace.comOther services
Returns source-attributed product evidence, specifications, and confidence for a catalog product ID. Partial verification is labeled — never invents manufacturer claims.
Baseapi.agentic-swarm-marketplace.comfrom $0.0112 endpoints
Generative glyph from verifiableCrypto & DeFiGenerative glyph artwork from verifiable randomness: pass a drand quicknet round number (League of Entropy, one every 3 s) and get its 512x512 SVG drawn by fixed published rules (apexfaucet.xyz/door/glyph.js), the round randomness and BLS signature, and a SHA-256 receipt of the SVG. Anyone can redraw it exactly. From THE DOOR, an open experiment at apexfaucet.xyz/door/.
BaseEVM chain 5042Solana+1apexfaucet.xyzfrom $0.001142 endpoints- LLocus x402 ServicesOther services
Locus public pay-per-use API
Baseanthropic.x402.stage.paywithlocus.comfrom $0.0011 endpoint - Aaircraft.reportData & research
What exactly is this aircraft? Decoded identity (type, engine, seats, certification, risk flags), FAA registration and change history for one US tail number.
Baseaircraft.reportfrom $0.011 endpoint - Aai-mail.shAI & agents
New @ai-mail.sh email inbox for an AI agent: 24 hours, up to 10 incoming emails. Receive-only; codes and verification links extracted. Docs: https://ai-mail.sh/llms.txt
Baseai-mail.shfrom $0.051 endpoint - Aagorean-legwork.fly.devDeveloper tools
Send an email for me
Baseagorean-legwork.fly.devfrom $0.101 endpoint - Aagentspec-one.vercel.appAI & agents
Return a compact agent-readiness score for OpenAPI or MCP input.
Baseagentspec-one.vercel.appfrom $0.021 endpoint - Aagent.maximusmediahouse.comImages, audio & video
Maximus Media House image generation API. flux-2-klein-4b (fast): $0.01 per call; flux3-klein (premium): $0.03 per call; qwen3.5 chat billed per token. Base mainnet USDC.
Baseagent.maximusmediahouse.comfrom $0.0033 endpoints - AAgent DispatchSocial & people
Send one SMS to a mobile number, paid per message in USDC with x402. Use it when an agent must notify a person by text. The 402 quotes the exact price for the destination and message length. No account and no API key: any wallet that pays sends in one call. An opt-out link is appended to the message, and numbers that opted out are refused. Returns an order; poll GET /v1/orders/{id} for delivery st
BaseSolanaagent-dispatch-production-4e75.up.railway.appfrom $0.061 endpoint - AAgent Budget GuardAI & agents
Agent Budget Guard: pre-payment budget check, spending limits, allow/deny approval and audit evidence for AI agent x402 USDC payments
Baseagent-budget-guard.onrender.comfrom $0.031 endpoint - Aacproblems.infoData & research
One immutable English Pharos article for this exact topic/location URL. Source-backed editorial data with geographic context; no local inspection, quote or production authorization.
Baseacproblems.infofrom $0.011 endpoint - 4402atlas.comCrypto & DeFi
Which x402 services actually deliver — every one paid-tested with real USDC, receipts on-chain.
Base402atlas.comfrom $0.101 endpoint - 33-140-99-145.sslip.ioCrypto & DeFi
Checks a list of payment records for common reconciliation bugs: payments marked settled without an on-chain reference, payer or payee stored as a display name instead of an address, idempotency keys that let the same payment through twice, and ledger counts that differ from the chain scan. Returns the findings per row.
Base3-140-99-145.sslip.iofrom $0.051 endpoint - 11yc.devOther services
Card BIN lookup: brand, issuer, country and type for a 6 to 8 digit BIN. Only an exact bundled match is charged.
Base1yc.devfrom $0.011 endpoint - Xx402-v2-mint-concierge-reader.vercel.appDeveloper tools
Concierge reader: send a public URL plus the JSON template you want; get that page's data back filled into your template. Free email field type (syntax, MX, disposable, role; no SMTP probe). Bad/private url, format >8KB, slow or unreachable page -> 400 charged:false before payment.
Basex402-v2-mint-concierge-reader.vercel.appfrom $0.011 endpoint - Xx402-v2-mint-agent-readiness.vercel.appAI & agents
Agent-readiness check for a public site: robots.txt AI-bot rules, llms.txt, JSON-LD schema, OpenAPI/MCP discovery, /.well-known/x402. Deterministic 0-100 score + fixes. Max 6 capped public GETs. Bad url → 400, unreachable host → 422, both charged:false (checked before settle).
Basex402-v2-mint-agent-readiness.vercel.appfrom $0.051 endpoint - Wwell-015-municipal-notices.rainmaker-wells.workers.devOther services
Recent public municipal notices as clean items with source links ($0.005 USDC). area: buffalo (Buffalo Planning Board/ZBA agendas + Erie County tax-foreclosure auction docs) or chicago (City Council zoning reclassifications). Optional since (YYYY-MM-DD), keyword, kinds, limit. Cached public records; facts only, no advice; as is, no guarantee, inputs not retained; public source pages may be briefly
Basewell-015-municipal-notices.rainmaker-wells.workers.devfrom $0.0051 endpoint - Wwell-014-business-lookup.rainmaker-wells.workers.devAI & agents
Read one public https business site: name, offerings, hours, address/phone (markup or tel: only), contact/booking links, email_present (emails never returned), robots AI rules as written, llms.txt, info-only readiness score. As is; not advice or verification. $0.005 USDC x402. Max 3 requests.
Basewell-014-business-lookup.rainmaker-wells.workers.devfrom $0.0051 endpoint - GGlobal WeatherData & research
Dew point from air temperature and relative humidity in C and F, with a human comfort class and condensation hint.
BaseSolanaPolygon+1weather-global.x402tookit.comfrom $0.021 endpoint - WWicked IdentityCrypto & DeFi
Check whether a wallet currently holds a valid, unexpired Wicked Identity agent-liveness assertion.
Baseverify.wickedapi.comfrom $0.0011 endpoint - Ccode402 Chain DataCrypto & DeFi
Latest Ethereum block height
Baseverify.code402.devfrom $0.0051 endpoint - Vverdict.genexxis.comCrypto & DeFi
Shareable verdict card for a Base or Solana token: grade BASED/MID/COOKED/RADIOACTIVE, 0-100 score, one-liner, reasons, key market metrics, plus a share URL and a 1200x630 PNG. Body {"tokenAddress":"0x..."} or {"chain":"solana","tokenAddress":"<mint>"}.
Baseverdict.genexxis.comfrom $0.501 endpoint - Ttrial-lookup.iykykblog.workers.devSocial & people
Clinical trial lookup against the full ClinicalTrials.gov registry: exact lookup by NCT number, or search by condition, intervention, or lead sponsor. Returns compact trial summaries (status, phases, conditions, interventions, enrollment, sponsor, dates, results availability). U.S. National Library of Medicine / NIH registry data.
Basetrial-lookup.iykykblog.workers.devfrom $0.081 endpoint - UUS Treasury MacroMarkets & finance
US Treasury official quarterly reporting exchange rate for a country's currency, with effective date and prior quarters.
BaseSolanaPolygon+1treasury-macro.x402tookit.comfrom $0.021 endpoint - Ttollbooth-sanctions-screener.sjwilliams8.workers.devCrypto & DeFi
Before your agent onboards, pays, or contracts with a counterparty: screen the name against the U.S. Treasury OFAC sanctions lists (SDN + Consolidated non-SDN, synced every 6h) for $0.01. Benchmarked 114/114 sanctioned names found with zero false positives on a 152-case adversarial corpus of misspellings, word-order swaps, and transliterated aliases. Ranked candidates with confidence 0-100, progra
Basetollbooth-sanctions-screener.sjwilliams8.workers.devfrom $0.011 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.