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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- 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
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- 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 - 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 - 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 - VVetPulseAI & agents
Veteran discount finder for veteran and VA-benefits agents. Returns retail, dining, travel, recreation-access, and regional programs most veterans never claim — covering US, UK (Defence Discount Service/Blue Light Card), Canada, Australia (RSL), New Zealand (RSA), and Germany.
BaseSolanaPolygon+8api.vetpulse.theaslangroupllc.comfrom $0.058 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 - 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 - 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 - TTruthPalAI & agents
Check whether a supplied public source supports or contradicts a factual claim. Validate citations in AI-generated answers against the supplied URL. TruthPal returns source-grounded evidence and a supported, contradicted, or uncertain verdict; when the source is insufficient, the result is uncertain. It assesses only the supplied source and does not independently corroborate the claim.
Baseapi.thetruthpal.comfrom $0.021 endpoint - SStartup Name Availability CheckAI & agents
Check if a startup or company name is available: domain availability across .com .io .ai .co .dev .app .xyz .net .org .so .sh .gg .me plus GitHub, npm, PyPI and X username availability in one call, with a ready-to-call link to the advanced check.
BasePolygonArbitrum+1startup.use.x402atlas.comfrom $0.023 endpoints - SSeniorPulseAI & agents
After-death checklist / what to do when an elderly parent or spouse dies: estate steps to take, survivor benefits to claim, and grief-support resources. For family and caregiver agents — informational.
BaseSolanaPolygon+8seniorpulse.theaslangroupllc.comfrom $0.0811 endpoints - IImmigrationPulseAI & agents
Express Entry 2026 category checker — category membership now beats raw CRS (physicians drew at 169 vs CEC 507+). Declares your eligibility across all 10 categories (5 new in 2026, incl. the Canadian-experience trio and CAF recruits), the OBSERVED 2026 cutoff range per category, dormancy warnings (STEM: no draw in 27+ months), and a deterministic strategy read for your CRS. Source-pinned draw data
BaseSolanaPolygon+8immigrationpulse.theaslangroupllc.comfrom $0.0511 endpoints - CCollectablesPulseAI & agents
Collectible value & price check: trading card value, graded card (PSA/BGS/CGC) price, coin value, comic & vinyl record price. Returns current market value by grade and condition with recent sold comparables (eBay/Discogs) for any item: cards, coins, comics, watches, sneakers, vinyl. Worldwide. For collector and investor agents.
BaseSolanaPolygon+8collectablespulse.theaslangroupllc.comfrom $0.0810 endpoints - AAutoPulseAI & agents
US safety recalls for a VIN, deterministic. Answers "does this car have open recalls", "is this used car safe to buy", "what NHTSA campaigns cover this vehicle". Decodes the VIN via NHTSA vPIC (year, make, model, body, engine) then lists every NHTSA recall campaign for that vehicle: component, summary, remedy, park-outside and do-not-drive flags. No LLM, no key, public domain.
BaseSolanaPolygon+8autopulse.theaslangroupllc.comfrom $0.0210 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 - 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 - Iinterai-x402.intellaisolution.comAI & agents
InterAI+ self-service in USDC: hundreds of models, MCP and Skill for chat completions, coding and more. Pick a model from the catalog or let the service pick one for you. Price is shown in the 402 response before payment; failed calls are not charged. Free: GET /v1/catalog, GET /v1/quote, GET /v1/coming, GET /v1/autonomous-agents. Register interest ahead of time with POST /v1/register-interest. Co
Baseinterai-x402.intellaisolution.comfrom $0.011 endpoint - TechAnalysisAI & agents
Full technical analysis — 18 indicators + AI signal summary
BaseSolanaRobinhood Chain+1ta.lonestaroracle.xyzfrom $0.052 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- TTravelPulseAI & agents
Flight compensation eligibility across 7 regimes — EU261, UK261, Canada APPR (incl. s.20 denied boarding), Brazil ANAC 400, Turkey SHY, India DGCA, Israel ASL — plus Montreal Convention baggage claims (effective-dated SDR caps, Art. 31 deadline math): deterministic amounts, legal citations, carrier defenses, evidence list. No LLM — every number is recomputable. Eligible? Get the ready-to-send clai
BaseSolanaPolygon+8travelpulse.theaslangroupllc.comfrom $0.0310 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 - PPlumb Data ExchangeAI & agents
Convert a table to CSV without changing any value; verified by round-trip.
Basexrplnumba2witcheese.tail7d8d44.ts.netfrom $0.0028 endpoints - Aapi.paylyte.aiAI & agents
Recent significant earthquakes from the U.S. Geological Survey, with time, magnitude, and event ID.
Baseapi.paylyte.aifrom $0.024 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.