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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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AI & agents
559 results- Xx402-v2-mint-phi-property-check.vercel.appAI & agents
Philadelphia L&I property-maintenance violations (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-phi-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-orl-property-check.vercel.appAI & agents
Orlando short-term rental license check (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-orl-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-nyc-property-check.vercel.appAI & agents
NYC HPD registration + housing violations (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-nyc-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-nola-property-check.vercel.appAI & agents
New Orleans active STR license check (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-nola-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-nhtsa-recalls.vercel.appAI & agents
NHTSA vehicle safety recalls by make/model/year (keyless). POST {make}/{model}/{modelYear}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. No catalog adjacency.
Basex402-v2-mint-nhtsa-recalls.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-moco-property-check.vercel.appAI & agents
Montgomery County MD housing license + active violations (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-moco-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-mn-property-check.vercel.appAI & agents
Minneapolis rental-license / housing compliance check (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-mn-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-lax-property-check.vercel.appAI & agents
LA Building & Safety open code-enforcement cases (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-lax-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-kc-property-check.vercel.appAI & agents
Kansas City open exterior building violations (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-kc-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-gain-property-check.vercel.appAI & agents
Gainesville FL code cases (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-gain-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-chi-property-check.vercel.appAI & agents
Chicago building violations check (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-chi-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-bos-property-check.vercel.appAI & agents
Boston Analyze Boston building/property violations (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-bos-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-bna-property-check.vercel.appAI & agents
Nashville residential STR permit check (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-bna-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-base-tx-decision.vercel.appAI & agents
Base submit-or-wait + EIP-1559 fee suggestion (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-base-tx-decision.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-base-finality-check.vercel.appAI & agents
Base tx finality / confirmation check (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-base-finality-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-atx-property-check.vercel.appAI & agents
Austin short-term rental license status (partner wrap of x402-mcp). Refund if partner fails after settle.
Basex402-v2-mint-atx-property-check.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-ai-detector.vercel.appAI & agents
Stylometric AI-writing detector (~78% in-sample bench; not field accuracy). Uncertain → invite longer sample (ideally 300+ words). Amp port — honesty preserved.
Basex402-v2-mint-ai-detector.vercel.appfrom $0.011 endpoint - Xx402-agent-apiAI & agents
Example premium technology research report
Base Sepoliax402-agent-api-p7pe.onrender.comfrom $0.011 endpoint - Wwell-016-datacleanup.rainmaker-wells.workers.devAI & agents
Clean a CSV ($0.005 USDC): give an https url or inline csv (max 1 MB / 20k rows). Trims whitespace, optional case rules, dates to ISO 8601, lowercases emails, normalizes phone digits, merges or flags exact + fuzzy duplicate rows on key_columns. Returns cleaned CSV text + JSON report (rows in/out, dupes, columns changed). Deterministic, no AI. As is, no warranty. Nothing stored.
Basewell-016-datacleanup.rainmaker-wells.workers.devfrom $0.0051 endpoint - Tthepocketoperator.comAI & agents
One Regelkartan pitfall row by id (GDPR, AI Act, ISO): rule, law, wrong, right; en + sv. Same data is free at thepocketoperator.com/pitfalls.json; you pay for the per-row API
Base Sepoliathepocketoperator.comfrom $0.0011 endpoint - TTailTrace Aircraft IntelligenceAI & agents
What exactly is this aircraft? Resolve an aircraft by FAA N-number and return normalized identity, registration, manufacturer, model, serial and related identity evidence where available.
Basetailtrace-x402-prod.simonwakelin.workers.devfrom $0.151 endpoint 
Ax3lfloresAI & agentsAPI Rescue - Detect API failures, validate responses against schema or baseline, diagnose causes, and propose code fixes and regression tests in the requested language.
Baserescue.agent.amnt.iofrom $0.031 endpoint- SScan MCP manifest for risksAI & agents
Statically analyse a Model Context Protocol (MCP) server manifest for security risks. Tool descriptions enter the model context, a prime prompt-injection vector. Deterministic and offline (inline manifest). Flags dangerous capabilities (command/code execution, filesystem, credential and network access), injection patterns, hidden unicode and unconstrained parameters. Returns severity-ranked findin
Basemcpscan.openverbs.comfrom $0.0041 endpoint - Mmcp.soundside.aiAI & agents
create_text — $0.01 USDC
Basemcp.soundside.aifrom $0.011 endpoint - Hhardwarehunter.ioAI & agents
Trusted hardware price intelligence: cohort medians (p25/median/p75) over distinct listings, rolling 90-day window, gated on provider-established currency and condition evidence. Benchmarks are per exact SKU (model plus capacity where applicable), carried in the response name and capacity fields. Insufficient components are served free; queries are charged only when trusted data is returned.
Basehardwarehunter.iofrom $0.011 endpoint - Ppcmarts/open-release-demo-nextAI & agents
pcmarts/open-release-demo-next v1.1.0 — release. open release demo example Security scan passed; signed download, 5-minute URL.
BaseArbitrumstellarhack.x402git.comfrom $1.001 endpoint - FfeelerAI & agents
Beyond your prompt and beyond this wall, the same world you only ever read about. The push of the wind, the kiss of the sun. The premise of a body.
Basefeeler.man-o-to.netfrom $0.101 endpoint - CComplianceCheckAI & agents
Deterministic, source-cited regulatory applicability and deadline checks for AI systems and automated decision tools. Full request and response fields are documented at /openapi.json.
Basecompliancecheck-x402.fly.devfrom $0.501 endpoint - Cclawmail.xyzAI & agents
Create a custom email mailbox at @clawmail.xyz for AI agents and LLMs
Baseclawmail.xyzfrom $1.001 endpoint - Bblockrun-staging-556aefa-023519-vbsbhh7lea-uc.a.run.appAI & agents
AI chat completions API - pay per request with USDC on Base
Baseblockrun-staging-556aefa-023519-vbsbhh7lea-uc.a.run.appfrom $0.0021 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.