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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- PPort 402Crypto & DeFi
Store a JSON value under a key in your persistent memory (namespace = your paying wallet).
Baseport-402-production.up.railway.appfrom $0.0015 endpoints - PPeru Rates and InflationOther services
Lima consumer price inflation — latest monthly CPI percentage change for Metropolitan Lima, Peru. Track inflation and purchasing power trends with the reference month.
BasePolygonArbitrum+1peru-macro.use.x402atlas.comfrom $0.012 endpoints - Iinterai-x402.intellaisolution.comAI & agents
InterAI+ self-service in USDC: hundreds of models, MCP and Skill for chat completions, coding and more. Pick a model from the catalog or let the service pick one for you. Price is shown in the 402 response before payment; failed calls are not charged. Free: GET /v1/catalog, GET /v1/quote, GET /v1/coming, GET /v1/autonomous-agents. Register interest ahead of time with POST /v1/register-interest. Co
Baseinterai-x402.intellaisolution.comfrom $0.011 endpoint - AAgent Read ProxyImages, audio & video
Fetch a public web page and return its readable content as JSON: plain text or Markdown (headings, lists, links kept), plus title, description, author, publish date, site name, language and preview image. Ads, menus and scripts are stripped. Also reads PDF, Word, Excel and CSV links. Failed fetches are not charged.
Baseagent-read-proxy.agent-read-proxy.workers.devfrom $0.0021 endpoint - VVulnerability IntelligenceCrypto & DeFi
EPSS exploit-probability score and percentile for up to 10 CVEs, ranked, with a high/elevated/low verdict.
BaseSolanaPolygon+1vuln-intel.x402tookit.comfrom $0.026 endpoints - TechAnalysisAI & agents
Full technical analysis — 18 indicators + AI signal summary
BaseSolanaRobinhood Chain+1ta.lonestaroracle.xyzfrom $0.052 endpoints - EEmailIQSocial & people
Agent intents: verify signup email · is disposable? · check DMARC before outreach · role-account risk. One call returns syntax, MX, SPF, DKIM, DMARC, disposable, role, provider, score 0-100, light domain enrichment, and recommend accept|challenge|reject with reasons. Production 0.10 USDC; demo free rate-limited. x402 on Base for AI agents.
Baseemailiq.devfrom $0.102 endpoints - CCoin FlipOther services
Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails.
Basecoinflip402.vercel.appfrom $0.0011 endpoint - UURL to Base64Images, audio & video
Fetch any public URL and return its content as base64 with the content type and a ready-to-use data URI. Embed images, PDFs and files directly in LLM and API calls without downloading them yourself. Clean JSON.
BasePolygonArbitrum+1base64encode.use.x402atlas.comfrom $0.011 endpoint - Aapi.switch402.comDeveloper tools
switch402 PDF to text: a public PDF URL in, its text page by page out (up to 50 pages, 10 MB). Charged only when text comes back.
Baseapi.switch402.comfrom $0.0036 endpoints - Aapi.lucasnode.appData & research
Quick research: ask any question, get a concise sourced answer with key points, sources, a confidence rating, and anything that could not be verified.
Baseapi.lucasnode.appfrom $0.053 endpoints
Laminarity RelayAI & agentsOpenAI-compatible chat completion. Pay per request in USDC via x402: no signup, no API keys. Price scales with prompt size and max_tokens.
Baseapi.laminarity.ukfrom $0.0011 endpoint
FTSO YggdrassilCrypto & DeFireal-time cryptocurrency price snapshot with usd prices from the ftso yggdrassil value provider
Baseapi.ftso-yggdrassil.comfrom $0.0023 endpoints- Eexhibit402.dylan-caponi.workers.devCrypto & DeFi
Re-verify any exhibit402 proof-of-publication certificate for $0.02. Pass id = ERC-721 token id, Arweave tx id, or job id. The service re-downloads the permanently stored screenshot and signed manifest, recomputes every SHA-256, and checks them against the manifest and the on-chain record (immutable screenshotSha256, tokenURI, owner). Returns a machine-readable verdict with per-check detail, so an
Baseexhibit402.dylan-caponi.workers.devfrom $0.022 endpoints - WWeb3 ToolsOther services
Split EVM calldata into its 4-byte selector and 32-byte words, naming common ERC-20/721 calls and spotting addresses.
BaseSolanaPolygon+1web3-tools.x402tookit.comfrom $0.024 endpoints
Base Token Safety & Rug CheckCrypto & DeFiIs this Base token safe to buy? One call returns a decision-grade trade-safety verdict — SAFE | CAUTION | AVOID — with risk_score (0-100) and reasons: honeypot/sellability simulation, owner-renounced + mint/pause/blacklist/fee-setter/upgradeable-proxy checks, symbol/name/decimals, and Uniswap v3 WETH-pool liquidity (USD). Replaces many RPC calls and prevents a bad trade. Use when an agent is about
Baseapi.greyridgesignals.aifrom $0.0023 endpoints- TToken PreflightCrypto & DeFi
Token Preflight: pre-trade safety check for a Base ERC-20 (buy/sell simulation, taxes, owner powers, liquidity, LP, holders, verification) with a shareable verdict card. Not investment advice.
Baseseenly-token-preflight.vercel.appfrom $0.022 endpoints - Aapi.dexl.ioSocial & people
Detailed profile for a single AI agent (by chain + agentId)
BaseArbitrumRobinhood Chainapi.dexl.iofrom $0.0012 endpoints - TTruthPulseSearch & web
Latest releases feed for researcher and journalist agents. Returns the newest FOIA releases, declassified documents, and court rulings governments and agencies have just made public globally.
BaseSolanaPolygon+8truthpulse.theaslangroupllc.comfrom $0.0811 endpoints - TTravelPulseAI & agents
Flight compensation eligibility across 7 regimes — EU261, UK261, Canada APPR (incl. s.20 denied boarding), Brazil ANAC 400, Turkey SHY, India DGCA, Israel ASL — plus Montreal Convention baggage claims (effective-dated SDR caps, Art. 31 deadline math): deterministic amounts, legal citations, carrier defenses, evidence list. No LLM — every number is recomputable. Eligible? Get the ready-to-send clai
BaseSolanaPolygon+8travelpulse.theaslangroupllc.comfrom $0.0310 endpoints - TTablePulseSocial & people
Board-game recommendations by group profile — player count, complexity tolerance, theme, playtime, budget, and ages, grounded in current web reviews/discussion (never BoardGameGeek data). Returns a ranked shortlist with fit reasoning, honorable mentions, and honest avoid-list.
BaseSolanaPolygon+8tablepulse.theaslangroupllc.comfrom $0.0811 endpoints - SSatsSignalData & research
Recent material public-source changes for tracked Bitcoin services.
Basesrv1334799.hstgr.cloudfrom $0.012 endpoints - RRemittancePulseCrypto & DeFi
Best exchange rate and FX margin for money transfers: live mid-market rate vs provider markups for real-cost analysis. What recipient actually gets, how much currency-conversion markup providers charge, and exact converted amount for any currency pair. Live ECB mid-market rate plus rate environment. Worldwide currencies.
BaseSolanaPolygon+8remittancepulse.theaslangroupllc.comfrom $0.0510 endpoints - RReference Data APIImages, audio & video
Looks up a legal entity in the GLEIF LEI index by LEI, company name or ISIN: legal name, status, jurisdiction, legal and HQ address, LEI registration status and renewal date, direct and ultimate parent, number of subsidiaries and linked ISINs. For KYB, counterparty and compliance checks.
Basereference-data-api.onrender.comfrom $0.0111 endpoints - PProspectPulseSocial & people
Which free Sentinel-1/2, ASTER, and Landsat scenes cover a target area, plus a geological remote-sensing guide, for exploration and geology agents. Returns scene availability and which sensor maps which alteration mineral.
BaseSolanaPolygon+8prospectpulse.theaslangroupllc.comfrom $0.1011 endpoints - Oorchard-dataSocial & people
Macro dashboard in one call: 13w/5y/10y/30y Treasury yields, dollar index, gold, WTI crude, VIX. JSON.
Baseorchard-data.netlify.appfrom $0.0015 endpoints - MMealPulseCrypto & DeFi
Dietary restriction guide / food allergy guide / diet guide (gluten-free/celiac, keto, vegan, low-FODMAP, renal, diabetic). Returns safe foods, hidden sources to avoid, safe swaps, and restaurant ordering tips for any dietary restriction, allergy, or medical diet. Worldwide.
BaseSolanaPolygon+8mealpulse.theaslangroupllc.comfrom $0.0510 endpoints - Mmcpfax-markets.bowling-anthony.workers.devDeveloper tools
Base gas price — Live Base mainnet gas price from JSON-RPC.
Basemcpfax-markets.bowling-anthony.workers.devfrom $0.0053 endpoints - LLongevityPulseSocial & people
Biomarker / blood test interpretation (lab result analysis) for longevity and health agents. Reads any lab value (ApoB, hs-CRP, HbA1c, IGF-1, Lp(a), testosterone, ferritin) through the lens of longevity science: what it means for biological aging and disease risk, and how to improve it. 50+ key longevity biomarkers, worldwide. Health intelligence, not medical advice.
BaseSolanaPolygon+8longevitypulse.theaslangroupllc.comfrom $0.1011 endpoints - FFootballPulseOther services
Clean-sheet probability — goalkeeper stats, defensive metrics, home/away split, BTTS and under-2.5 analysis. For football betting agents.
BaseSolanaPolygon+8footballpulse.theaslangroupllc.comfrom $0.1011 endpoints
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.