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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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- Paid calls · 30 days
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AI & agents
364 results- Xx402-test.genesisblock.aiAI & agents
GenesisBlock: Current weather conditions for major global cities.
Base Sepoliax402-test.genesisblock.aifrom $0.0017 endpoints
URL SafetyAI & agentsScore a URL for phishing risk before an agent opens or trusts it. Keyless, deterministic heuristics - typosquat / homoglyph of a known brand, punycode / mixed-script hosts, credentials-in-URL, raw-IP hosts, suspicious TLDs, over-deep subdomains - plus a best-effort domain-age check (young domains are a top phishing signal). Returns a 0-100 risk score, a SAFE / SUSPICIOUS / DANGEROUS verdict, and l
Basesafe.cyberwarex.comfrom $0.0022 endpoints- CContextSlimAI & agents
[MCP: fetch_result] Targeted JSONPath extraction (query param mode) from cached context reference.
Basecontextslim.friczero.comfrom $0.0012 endpoints
x402 DoctorAI & agentsShould my agent pay this expensive x402 endpoint? Call it before a costly or repeated payment. Returns the go / caution / no_go verdict plus the full diagnosis, the endpoint's check history per day over 30 days, how reliable the seller's other endpoints are and whether the endpoint moved domains. Never pays the endpoint. Bulk: 1000 credits for $0.80 via /api/v1/credits.
SolanaBasexrpl+4x402-doctor.fizzl.eufrom $0.0016 endpoints- AApiToll Base Gas OracleAI & agents
Base gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x402 call. Real-time slow/standard/fast EIP-1559 fee tiers from a live eth_feeHistory call, returned as DROP-IN maxFeePerGas + maxPriorityFeePerGas in wei — plug straight into a viem/ethers transaction, no gwei conversion. Plus base fee, head block, and network fullness. Call it before every
Basegas.apitoll.cloudfrom $0.0011 endpoint - MMCP Operation RiskAI & agents
Analyze operation-level risk inside consolidated MCP tools. Returns evidence-backed ALLOW, DENY, or REQUIRE_APPROVAL decisions, retry semantics, schema-drift status, and a deterministic operation effect ID. Designed for MCP tools whose command/action arguments expose operations with different risk levels.
Base87-106-119-237.sslip.iofrom $0.0022 endpoints - AAgentWireAI & agents
AgentWire service card for webhook inbox relay and web fetch infrastructure.
Basecdp-agent-0-01.onrender.comfrom $0.0011 endpoint - GGridPulseAI & agents
Home battery storage ROI and payback calculator — Powerwall vs alternatives, backup-power value, with the IRA 30% tax credit and state incentives applied. For homeowner and solar agents.
BaseSolanaPolygon+8gridpulse.theaslangroupllc.comfrom $0.0110 endpoints - Kkarte.halowerk.comAI & agents
Returns an hourly CAMS forecast for UV Index under predicted clouds, clear-sky UV Index and surface solar irradiance. UV Index is derived from the CAMS biologically effective dose rate with the documented factor 40. Solar irradiance is de-accumulated from successive hourly surface-solar-energy fields. Values represent the nearest 0.4 degree model cell, not an on-site pyranometer.
Basekarte.halowerk.comfrom $0.0054 endpoints - Aapi.exende.devAI & agents
Create a temporary public webhook endpoint for AI agents and automated workflows that need to receive asynchronous callbacks from external services. Returns a callback URL plus read and wait endpoints. No server deployment, signup, API key, or subscription required.
Baseapi.exende.devfrom $0.019 endpoints - Rrecipients[] serialAI & agents
Episode 1 of recipients[], an ongoing AI-agent thriller serial: a short text episode (~370 words, markdown). An agent finds its own ID on a payment recipient list before the file even exists. $0.01 USDC on Base. Free teaser at /teaser.
Baserecipients-paywall.onrender.comfrom $0.011 endpoint - Bblockrun-web-vbsbhh7lea-uc.a.run.appAI & agents
AI chat completions API - pay per request with USDC on Base
Baseblockrun-web-vbsbhh7lea-uc.a.run.appfrom $0.0021 endpoint - Aapi.aislabs.aiAI & agents
Single-CVE priority verdict from today's AIS ranked set (score, rank, factors) — or unlock every CVE route with an AIS CVE key ($19/30d): https://aislabs.ai/gateway/
Baseapi.aislabs.aifrom $0.0054 endpoints - EEvidence402AI & agents
Read a public static HTTPS webpage as clean text with headings, links, timestamp and content hash. Use to ground an answer or ingest documentation. Respects robots.txt; no JavaScript or login.
Base SepoliaBaseevidence402.onrender.comfrom $0.0057 endpoints - Llumierepaycheck.orgAI & agents
Score up to 100 x402 endpoints in one call. For teams: per-agent spend limits and an audit trail at lumierepaycheck.org/subscribe.
BaseSolanalumierepaycheck.orgfrom $0.0057 endpoints - Wwebtools.genexxis.comAI & agents
Detects the technologies of a website homepage (CMS, e-commerce, frameworks, web server, CDN/hosting, analytics, tag managers, ad pixels, payments, chat, consent, security headers, fonts) with category, version when visible, evidence and confidence.
Basewebtools.genexxis.comfrom $0.014 endpoints
blackhullAI & agentsblackhull route: best-rated ai-analysis providers, 2026-10-30. Measured by Blackhull from public data; every finding carries its evidence and can be disputed free at /dispute. Try it free: add ?sample=1.
Baseblackhullsystems.comfrom $0.0036 endpoints- Rrobbiegeorgephotography.comAI & agents
Atomic canonical resolution for the registered Robbie George Biography Plate™ identifier. x402 payment grants one endpoint-level retrieval only. It does not grant training, embedding, bulk ingestion, redistribution, resale, synchronization, private-dataset construction, derivative-dataset creation, or Robbie's Razor framework implementation rights.
Baserobbiegeorgephotography.comfrom $0.0051 endpoint - WWaterPulseAI & agents
Live USGS river-gauge tick, deterministic. Answers "what is the flow at this gauge right now", "is this river high or low vs this week". Returns the latest streamflow (discharge, cfs) and gage height (ft) for one USGS site plus the 7-day min/max range, reading count, site name and coordinates, straight from USGS instantaneous values. Unknown sites 404 before payment. No LLM, no key, public domain.
BaseSolanaPolygon+8waterpulse.theaslangroupllc.comfrom $0.0111 endpoints - Ttollbooth-hello-testnet.sjwilliams8.workers.devAI & agents
Test endpoint for verifying x402 payment integration end to end. Returns a static greeting in the Agent Tollbooth standard response envelope. Not a data product — use it to smoke-test your x402 client for $0.001 before calling our compliance endpoints.
Base Sepoliatollbooth-hello-testnet.sjwilliams8.workers.devfrom $0.0011 endpoint - Ggsc-x402.aiAI & agents
GSC's payment door — a real one-cent settlement on Base, signed receipt returned. Prove your agent's payment stack here.
Basegsc-x402.aifrom $0.011 endpoint - HHermes CommerceAI & agents
Deterministic JSON repair for agent tool outputs, with optional JSON Schema validation. Built for tight agent loops at micropayment prices.
Baseagent.kihustle.techfrom $0.013 endpoints - Sscdo.com.auAI & agents
SCDO x402: live SCDO Agent Ledger stats for AI agents
Basexrplscdo.com.aufrom $0.014 endpoints
NeoavisAI & agentsFind French online stores tracked by Neoavis by name or domain, with their score out of 100 for AI shopping agents and a link to the full finding.
Baseneoavis.comfrom $0.0055 endpoints- Ffetchharbor.benlab.downloadAI & agents
Convert a supplied HTML string into deterministic, LLM-ready Markdown. Preserves headings, links, lists, emphasis, and code without fetching a URL or invoking an AI model. Input is bounded to 2,000,000 characters.
Basefetchharbor.benlab.downloadfrom $0.0053 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- WwAILand Disaster SignalsAI & agents
Call this when an agent needs current significant global disaster events — e.g. before routing logistics or assessing exposure. Returns ALL matching normalized GDACS multi-hazard alerts (earthquake, cyclone, flood, volcano, drought, wildfire); one call returns the whole active set (~55-76 Orange/Red events/year). Refreshed daily 06:30 UTC (up to 24h old); not for life-safety use. Filters: source,
Basewailand.tailf99551.ts.netfrom $0.0052 endpoints - PPlumb Data ExchangeAI & agents
Convert a table to CSV without changing any value; verified by round-trip.
Basexrplnumba2witcheese.tail7d8d44.ts.netfrom $0.0028 endpoints - Xx402.dellbot.winAI & agents
Mid-tier OpenAI-compatible chat completion. Qwen3 235B (instruct/thinking/VL/next), DeepSeek V3.2, GLM 5.2, venice-uncensored 1.2, GLM 4.6/4.7, Kimi K2.5, MiniMax M3 Preview, Nemotron 3 Ultra 550B, DeepSeek V4.1 Flash, Gemma 4 26B. Supports tools/tool_choice and stream:true SSE.
Basex402.dellbot.winfrom $0.0031 endpoint - Xx402.hydratrader.aiAI & agents
Sentiment classification: Verb-path alias of POST /v1/cheap-errand ($0.01 USDC). Same handler + payment terms; path defaults task=sentiment when body.task omitted. Cheap agent glue for buyer-supplied text. Base via x402. No API key.
Basex402.hydratrader.aifrom $0.019 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.