Explore APIs
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
88 results- AAestheticDataAI & agents
Curated aesthetic-medicine brand directory, partially verified. One call returns the full core catalog of filler, toxin, and thread brands: name, manufacturer, country, categories, certifications, treatment areas, and verification status. Some fields may be null.
Baseapi.aestheticdata.iofrom $0.0013 endpoints - SSchemaSureAI & agents
Extract strict, JSON-Schema-valid typed JSON from unstructured text or HTML. Failed extraction calls are not settled. Primary x402 V2 API for production agents.
Baseschemasure.comfrom $0.022 endpoints - Mmcp.gapup.ioAI & agents
Foreign exchange currency conversion rate lookup, returns live rate, timestamp and source for any currency pair
Basemcp.gapup.iofrom $0.00222 endpoints - AAARN Web ReadAI & agents
Read one public web URL and convert its webpage content to clean Markdown or plain text. Removes HTML boilerplate and returns LLM-ready text for AI agents, RAG context, research and summaries. One URL per paid request.
Baseapi.aarn.spacefrom $0.0022 endpoints - AAgent GuildAI & agents
Agent Guild paid read (fraud_check): collusion suspicion scores, reasons and cluster identifiers Use when an autonomous agent needs to: list agents at or above a minimum collusion suspicion score; review flagged agents and their collusion suspicion reasons.
Baseagent-guild-5d5r.onrender.comfrom $0.0052 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 - 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 - 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 - 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
BrainChainAI & agentsJev hires a model for your task and grades the result. Rejected work is refunded.
EVM chain 46630Base Sepoliabrain.testnet.usebrainchain.comfrom $1.001 endpoint- SSQLPermitAI & agents
Decide whether an agent-authored PostgreSQL statement complies with an execution policy, using PostgreSQL's own parser rather than pattern matching. Detects statement stacking, data-modifying CTEs, COPY PROGRAM, privilege changes, and dangerous functions that read as ordinary SELECTs. Returns reason codes and an optional short-lived signed permit bound to the exact normalized statement. Never conn
Basesqlpermit.schemasure.comfrom $0.021 endpoint - RReceiptSureAI & agents
Check whether a mined Base transaction did what your agent meant it to do. Fetches the receipt, decodes its ERC-20, ERC-721 and ERC-1155 transfer and approval logs, and reports each declared movement as matched, missing or short, with the observed amount beside the expected one. Catches reverts, success with no effect, fee-on-transfer skims and transfers to recipients you never named. Returns unkn
Basereceipt.schemasure.comfrom $0.021 endpoint - Aapi.verrow.aiAI & agents
Watch a parcel for 30 days: new permits or decisions touching it, delivered to an HTTPS webhook with HMAC signatures and retries. $4.00 per 30 days in USDC. Verified: 100% golden accuracy (78/78), 100% page-cited, UNKNOWN never charged, 100% uptime (24h), data as of 2026-10-26.
BaseBase Sepoliaapi.verrow.aifrom $0.058 endpoints - 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 - 4402cron: Scheduled WebhooksAI & agents
Cron job scheduler for AI agents: calls your HTTPS endpoint on a cron expression (recurring webhook, scheduled callback, heartbeat, reminder). ENTRY pack: 20 deliveries for $0.02 ($0.001/delivery). Same service, best rate $0.0005/delivery: https://402cron.com/buy/starter. Also 50000 for $25: https://402cron.com/buy/month. Credits never expire. Your endpoint must echo our challenge (no fixed-reply
Base402cron.comfrom $0.022 endpoints - Aapi.onhub.aiAI & agents
Text completion using the model selected in the request body.
BaseSolanaapi.onhub.aifrom $0.0023 endpoints - Aagent.memoryapi.orgAI & agents
Look up an ERC-8004 AI agent identity on Base mainnet. Returns name, description, services, x402 support, and owner.
Baseagent.memoryapi.orgfrom $0.0013 endpoints
AgentalogAI & agentsAgentalog: security check of an MCP server by address (measured signals, catalog listings, domain facts), paid per call
Baseagentalog.comfrom $0.012 endpoints- Ttoolbelt402.tpoborne.workers.devAI & agents
Check a URL before fetching it: is it alive, final URL after redirects, HTTP status, content type, HTML title, and whether robots.txt allows your user-agent. Link checker and fetch preflight for agents.
Basetoolbelt402.tpoborne.workers.devfrom $0.0022 endpoints - Ppaylyte.aiAI & agents
Recent significant earthquakes from the U.S. Geological Survey, with time, magnitude, and event ID.
Basepaylyte.aifrom $0.024 endpoints - BBeehive AI EngineAI & agents
Utah County, Utah (USA) planning-commission land-use hearing items parsed from official Utah Public Meeting Notice agendas. Verbatim agenda text with source URL and parse provenance per record. Optional city filter and dedupe.
Baseengine.beehivewebstudio.comfrom $0.011 endpoint
BAGS Agent APIAI & agentsBAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment surface.
BaseBase Sepoliastaging.getbags.appfrom $0.011 endpoint- Xx402-v2-mint-llm-cost-quote.vercel.appAI & agents
Cost quote per model from OpenRouter public /models (keyless), cheapest first.
Basex402-v2-mint-llm-cost-quote.vercel.appfrom $0.0031 endpoint - BBatch Readiness ScanAI & agents
Bulk agent-readiness screening for agencies, VCs and portfolio owners: scan up to 50 URLs in one paid call ($0.02/URL, $0.10 minimum) and get a compact per-URL verdict — level 0-5, passing checks, top gaps. The single-URL scan with full evidence stays free at /api/x402/deep-scan; this buys scale and rate-limit bypass.
Basemudko.comfrom $0.107 endpoints - Iitalycheck.italycheck.workers.devAI & agents
Look up an Italian public administration or public-service operator by 11-digit codice fiscale in IndicePA (AgID). Use when an agent must verify a public-sector counterparty, find its official PEC (certified email) addresses, or confirm it exists before e-invoicing. Input: ?cf=80016350821.
Baseitalycheck.italycheck.workers.devfrom $0.0051 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.