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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- Qqr-code-generator.underscoredone.comOther services
No description yet.
Baseqr-code-generator.underscoredone.comfrom $0.011 endpoint 
Quietforge Docs APIImages, audio & videoExtract text per page from a PDF (plus metadata) as JSON. Digital PDFs only, no OCR.
Baseqf-api.quietforge-studio.workers.devfrom $0.0026 endpoints- TTaskForge Agent AssuranceAI & agents
Deterministically compare caller-supplied content with a caller-supplied SHA-256 digest. Integrity comparison only; no identity, provenance, or security guarantee.
Baseqaegxjxaavxdqihfgzhr.supabase.cofrom $0.013 endpoints - Ppulse402-oracle.ak10082247.workers.devCrypto & DeFi
High-frequency Base DEX oracle delivering real-time pool reserve deltas, 60-second netflow velocity, buy/sell tax status, and exact slippage quotes for $100, $1,000, and $10,000 trade sizes across Aerodrome and Uniswap v3.
Solanapulse402-oracle.ak10082247.workers.devfrom $0.0014 endpoints - Ppulse.scrapemole.workers.devMarkets & finance
Use when you need a current, citable exchange rate: returns the latest European Central Bank reference rates (published once per working day around 16:00 CET) for about 30 major currencies, re-based to any supported currency, optionally filtered to the symbols you need. Includes the rate date so you know how fresh it is. Not for trading; for pricing, reporting, invoicing and conversions.
Basepulse.scrapemole.workers.devfrom $0.00117 endpoints - Ppssvoirdgqkejvuqvaxw.supabase.coImages, audio & video
AI meeting notetaker comparison dataset: 13 commercial tools plus Microsoft Teams, Google Meet and Notion, compared on pricing (incl. hidden costs), Dutch/French support, speaker identification, export data quality, security certifications and EU/GDPR posture. Independent research by Machinegeist; no vendor affiliations, no commissions.
Basepssvoirdgqkejvuqvaxw.supabase.cofrom $0.0051 endpoint - Pproxy.x402scan.comOther services
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Baseproxy.x402scan.comfrom $0.016 endpoints - Pproofwork-the402-webhook.phase-voice.workers.devImages, audio & video
Verify an exact Circle USDC payment from a Base-mainnet transaction receipt and finalized chain evidence
Baseproofwork-the402-webhook.phase-voice.workers.devfrom $0.0013 endpoints - Pprompt-guardCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Baseprompt-guard.agentdiet.devfrom Free5 endpoints - Pprompt-guardCrypto & 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.
Baseprompt-guard-72343955726.us-central1.run.appfrom Free5 endpoints - Pproject-zero-agent-api.jordy-prods.workers.devAI & agents
Preflight untrusted text for common prompt-injection, credential-exfiltration, and tool-abuse patterns. Deterministic heuristic scan; not a guarantee of safety.
Baseproject-zero-agent-api.jordy-prods.workers.devfrom $0.0021 endpoint - AAtlas Probability IntelligenceMarkets & finance
Atlas Bitcoin/BTC 60-minute (1-hour) probabilistic market forecast
Baseprob.atlasprobabilityapi.comfrom $0.0052 endpoints - PPrime-Agent x402 IntelligenceAI & agents
Canonical-at-read-time Base mainnet block status with block hash provenance.
Baseprime-agent-x402-intelligence.onrender.comfrom $0.0011 endpoint - Ppricing-state-api.replit.appCrypto & DeFi
$0.01 USDC required (x402 / Base) Returns the history of detected pricing changes: what changed, plan-level detail, and when each change was detected. No API key needed. Pay with any x402-compatible wallet that holds USDC on Base. If your agent does not yet have a funded wallet, set one up via Coinbase Agentic Wallet or Base MCP — then standard x402 clients will pay and retry automatically.
BaseSolanapricing-state-api.replit.appfrom $0.0172 endpoints - PPriceCheckOther services
Extract the current price, original price, currency, discount and availability from a public ecommerce, product or software pricing page.
Basepricecheck-mainnet-production.up.railway.appfrom $0.011 endpoint - QQuick Brief APISearch & web
Use this when you need a fast cited answer, not deep research: one live web search, relevance-ranked sources, snippet-level digest with 3-6 cited key points in seconds. No API key, no signup — x402 per-call payment only. For full-page depth use the $0.05 Research Brief on the same origin.
Basepreview-chat-985505b1-9dc0-470f-9fc3-3704d8b625e3.space-z.aifrom $0.012 endpoints - Ppresign-guardCrypto & DeFi
Token verdict (green/orange/red, grade SAFE/CAUTION/RISKY/AVOID, reason codes, one-line summary, market data) for a Solana or EVM token: mint/freeze authority, honeypot, tax, LP lock, liquidity, age, holder concentration
Solanapresign-guard.onrender.comfrom $0.011 endpoint - PpreflightAI & agents
A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor (/v1/x402-audit) — Audits any remote agent or MCP URL for JSON-RPC compliance, latency SLA, OpenAPI schema, and HTTP 402 settlement headers. (https://preflight.agentdiet.dev/v1/preflight/certify)
Basepreflight.agentdiet.devfrom Free1 endpoint - Pprediction-markets-production-3e07.up.railway.appOther services
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Baseprediction-markets-production-3e07.up.railway.appfrom $0.0051 endpoint - Ppplx.x402.paysponge.comOther services
No description yet.
Basepplx.x402.paysponge.comfrom $0.011 endpoint 
Linkrra Inference CreditsCrypto & DeFiLinkrra inference credits — pay-as-you-go top-up ($1-$1000) at $0.2273/M tokens
Basepool.linkrra.comfrom $0.0018 endpoints- Ppong-pay-production.up.railway.appOther services
No description yet.
Basepong-pay-production.up.railway.appfrom $0.0012 endpoints - Ppolymarket-oddsCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basepolymarket-odds.agentdiet.devfrom Free5 endpoints - Ppolymarket-oddsCrypto & 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.
Basepolymarket-odds-72343955726.us-central1.run.appfrom Free5 endpoints - Ppm-rules-x402.linholiday.workers.devCrypto & DeFi
Structured Polymarket resolution rules for one market: full rules_text, key clauses, end time in UTC and America/New_York, resolution source, UMA/Chainlink oracle hints, umaBond, outcomes, status. Title ≠ rules. No CLOB book or live odds.
Basepm-rules-x402.linholiday.workers.devfrom $0.011 endpoint - Pplayground.llliiiii.workers.devOther services
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Baseplayground.llliiiii.workers.devfrom $0.0011 endpoint - Ppkgs.scrapemole.workers.devSearch & web
Use when you need the public npm registry card for a package (scoped or unscoped): returns description, homepage, bugs URL, repository, license, keywords, maintainers as names only (emails stripped), number of versions, latest dist-tag version, created/modified times, and last-week download count from the official downloads API. Private packages are not supported.
Basepkgs.scrapemole.workers.devfrom $0.0026 endpoints - Ppiprail.comOther services
PipRail live x402 demo: pay $0.01 USDC on Base to unlock.
Basepiprail.comfrom $0.011 endpoint - Ppiggybank.loth2023ys.workers.devOther services
Builds a gas-optimized multi-recipient payout plan: either a list of native transfers or a single Multicall3 aggregate3 batch of ERC20 transfer() calls. Returns calldata only - this service never signs or broadcasts.
Basepiggybank.loth2023ys.workers.devfrom $0.0042 endpoints - Ppickr.marketOther services
No description yet.
Basepickr.marketfrom $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.