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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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4,273 results- AassayAI & agents
Assay A2A & MCP Pre-Flight Security Audit & TDQS Certification ($0.005 Base USDC)
Baseassay-207908449630.us-central1.run.appfrom Free1 endpoint 
AsiaPulseMarkets & financeAsia regional macro + geopolitical stress pulse (no params)
Baseasia.lonestaroracle.xyzfrom $0.051 endpoint- Aascii-x402-production.up.railway.appImages, audio & video
Convert an uploaded image into terminal-friendly ASCII art.
Baseascii-x402-production.up.railway.appfrom $0.0011 endpoint - Aarxiv.scrapemole.workers.devSearch & web
Use when you need to discover arXiv e-prints by keyword, title, author or field query: pass any arXiv search_query string (e.g. "transformer attention", "au:vaswani", "ti:\"attention is all you need\"", "cat:cs.LG AND all:diffusion"). Returns up to 25 papers with id, title, summary, authors (names + affiliation without emails), primary category, categories, published/updated, comment, journal ref,
Basearxiv.scrapemole.workers.devfrom $0.0024 endpoints - Aarxiv-mcp.mtree.workers.devAI & agents
No description yet.
Basearxiv-mcp.mtree.workers.devfrom $0.041 endpoint - Aarxiv-digestCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basearxiv-digest.agentdiet.devfrom Free5 endpoints - Aarxiv-digestCrypto & DeFi
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.
Basearxiv-digest-72343955726.us-central1.run.appfrom Free5 endpoints - Aarticlesyndicator.netImages, audio & video
Publish a permanent, server-side rendered (SSR) contextual article with JSON-LD schema, DoFollow attribution, /llms.txt indexing & Ed25519 receipt across 93 canonical domains in 12 verticals ($1.00 USDC).
Basearticlesyndicator.netfrom $1.001 endpoint - AArgonautWorks Schedule FitAI & agents
Find a DST-aware meeting window inside shared local business hours for 2 to 8 IANA time zones.
Baseargonaut-schedule-fit.vercel.appfrom $0.0011 endpoint - Aargonaut-crypto-headline-pulse.vercel.appCrypto & DeFi
Fresh crypto news and source-linked Bitcoin, Ethereum, Base, and market headlines from four independent publisher feeds, with deterministic topic filtering and no generated claims.
Baseargonaut-crypto-headline-pulse.vercel.appfrom $0.0071 endpoint - AArgonautWorks Bounty SignalAI & agents
Canonical GitHub bounty viability check for agents: issue state, repo trust, payout evidence, age, claims and competing PRs. Prevents wasted coding on stale or fake rewards.
Baseargonaut-bounty-signal.vercel.appfrom $0.011 endpoint - AArgonautWorks Base Network PulseCrypto & DeFi
Current Base mainnet block consensus, EIP-1559 fees, ETH/USD reference price, and deepest WETH-stablecoin DEX pool telemetry.
Baseargonaut-base-network-pulse.vercel.appfrom $0.0091 endpoint - AArbol Form 4 Insider FilingsMarkets & finance
Returns the most recent SEC Form 4 insider-transaction filings for a US-listed ticker, parsed from EDGAR ownership XML into normalized JSON: issuer, reporting owners, transactions with share counts and prices, and footnotes. Data source: SEC EDGAR public filings.
Basearbol-x402-probe-begriff.vercel.appfrom $0.021 endpoint - Aapproval-revoke-mcp.mtree.workers.devAI & agents
No description yet.
Baseapproval-revoke-mcp.mtree.workers.devfrom $0.051 endpoint - Aappraxa-ip.b-kohlenbach.workers.devOther services
No description yet.
Baseappraxa-ip.b-kohlenbach.workers.devfrom $0.991 endpoint 
x402receiptsCrypto & DeFiAccounting, reconciliation and audit trail for autonomous agent spending. Record every x402 purchase as a receipt; each is matched against the on-chain USDC payment (Base, Solana), missing or unmatched payments are flagged, finance gets a monthly statement and CSV export, and daily batch fingerprints are anchored on a public ledger with a verification page per receipt. USD 1 per agent wallet per c
Baseapp.x402receipts.comfrom $1.001 endpoint- Aapp.spheron.aiAI & agents
No description yet.
Baseapp.spheron.aifrom $1.001 endpoint - Aapp.ox212.comAI & agents
OX212 risk check: the engine's behavioural risk reading of the trades you send (no AI).
Baseapp.ox212.comfrom $0.011 endpoint 
CriptoNousCrypto & DeFiNews/wire pulse for one symbol or meta ($0.04). Narrative context only NFA.
SolanaBaseBNB Chain+1app.criptonous.comfrom $0.0119 endpoints- Aapiv2.laevitas.chCrypto & DeFi
Spot market data — pay per request Payment buys at least 100 credits. This request uses its credit cost; unused credits remain on your wallet. Reuse X-Credit-Token for later calls.
BaseSolanaapiv2.laevitas.chfrom $0.1029 endpoints - Aapipapai.vercel.appOther services
No description yet.
Baseapipapai.vercel.appfrom $1.001 endpoint - Aapidashboard.xclaw.infoOther services
No description yet.
Baseapidashboard.xclaw.infofrom $1.003 endpoints - Aapidashboard.cryptohunt.aiCrypto & DeFi
No description yet.
Baseapidashboard.cryptohunt.aifrom $0.1016 endpoints - Aapi.zuluworksai.comOther services
No description yet.
Baseapi.zuluworksai.comfrom $0.0015 endpoints - Aapi.xcache.ioOther services
No description yet.
Baseapi.xcache.iofrom $0.501 endpoint - Xx402 Video GatewayImages, audio & video
Seedance 2.0 Fast — 5-second 720p text-to-video (faster, cheaper)
Baseapi.x402video.comfrom $1.051 endpoint 
AgentPay Evidence BriefData & researchCited, conflict-aware JSON intelligence brief for current-market, company, technology and regulatory questions. Returns source-bound findings, freshness, conflicts, validation evidence and a verifiable receipt.
Baseapi.x402-engine.comfrom $0.101 endpoint- WWitnessoryOther services
Up to 20 fresh post-quantum checks in one request, each signed
Baseapi.witnessory.orgfrom $0.101 endpoint - Aapi.willowbirdie.comData & research
Static APK triage report
Baseapi.willowbirdie.comfrom $0.051 endpoint - WWalletForgeCrypto & DeFi
Fetch a public URL and return cleaned markdown
Baseapi.walletforge.appfrom $0.0014 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.