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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
364 results- Cch-cm-kg.aiAI & agents
One paid call on ch-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://ch-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Basech-cm-kg.aifrom $0.011 endpoint - BBuild Scotts Bluff Agent APIAI & agents
American Community Survey 5-year demographics for Scotts Bluff County and each of its ten places, plus a 16-year trend series: population, median household and per-capita income, poverty, median home value, gross rent, housing units and owner/renter occupancy. GET /v1/census.
Basebuildscottsbluff.comfrom $0.012 endpoints - JJev Structured EvaluationAI & agents
Structured evaluation with TypeSafe's Jev (System One) model. Send any state plus typed questions — noul (true/false), choice (pick one), or score (ordinal scale) — and get back calibrated probabilities and confidence for each. Built for routing, classification, triage and policy checks where a fast, predictable, machine-readable answer beats prose.
Basejev-systemone.vercel.appfrom $0.0051 endpoint - DdeadchannelAI & agents
Use before paying an x402 endpoint you have not used before, when you cannot tell a working seller from a trap, a testnet address dressed as mainnet, or a listing whose price no longer matches its challenge. Returns a verdict — live, degraded, trap, testnet or dead — a 0-100 risk score, and the specific findings behind both, so an agent can decline a bad endpoint instead of learning about it by lo
BasealgorandSolanadeadchannel.vercel.appfrom $0.0051 endpoint - BBlue Cap hash.computeAI & agents
Compute a SHA-256 digest for customer-supplied UTF-8 or base64-decoded bytes through a stable machine endpoint. Returns the reproducible digest through a receipted external execution.
Basemachine.soundiq.iofrom $0.011 endpoint - JJev Structured EvaluationAI & agents
Structured evaluation with TypeSafe's Jev (System One) model. Send any state plus typed questions — noul (true/false), choice (pick one), or score (ordinal scale) — and get back calibrated probabilities and confidence for each. Built for routing, classification, triage and policy checks where a fast, predictable, machine-readable answer beats prose.
Basejev-x402-evil.vercel.appfrom $0.0051 endpoint - Ddev-5090 uncensored inferenceAI & agents
Text embeddings (768-dim). Send {"input": "text"} or {"input": ["a","b"]}.
Basedev-5090-box.tailfb4c1f.ts.netfrom $0.0051 endpoint - Aagent-domain-trust.iykykblog.workers.devAI & agents
Assess the trustworthiness of a domain: RDAP registration age and registrar, DNS records (A/MX/TXT-SPF), and HTTPS reachability. Returns a 0-100 trust score with signals and an audit receipt.
Baseagent-domain-trust.iykykblog.workers.devfrom $0.011 endpoint
Dedge890AI & agentsProduct Listing Cleaner - Convert messy product names and rough notes into a corrected title, concise description, bullet features, and an organized specifications object for marketplace listings.
Baseproduct-listing.agent.amnt.iofrom $0.011 endpoint- Uus-cm-kg.aiAI & agents
One paid call on us-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://us-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Baseus-cm-kg.aifrom $0.011 endpoint - Ttopagentx402.vercel.appAI & agents
premium agent insight analysis
Basetopagentx402.vercel.appfrom $0.0012 endpoints - Ssg-cm-kg.aiAI & agents
One paid call on sg-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://sg-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Basesg-cm-kg.aifrom $0.011 endpoint
RecallScoutAI & agentsProduct recalls (US): is a product, brand, food, drug, medical device or vehicle (make, model, year) under an active FDA, NHTSA or CPSC recall? Severity on one scale, hazard, remedy and lot codes. RecallScout
BaseArbitrumPolygon+2recallscout.scalpstream.comfrom $0.011 endpoint- Kkyp-model.aiAI & agents
One paid call on kyp-model.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://kyp-model.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Basekyp-model.aifrom $0.011 endpoint - KKYA BrasilAI & agents
Signed verdict: is this action (action, amount, currency, counterparty, payment instrument) inside the agent's mandate and is the credential active? Evaluates the reserved mandate fields; lists the fields it did not evaluate.
Basekya-br-agents.marcelfons.workers.devfrom $0.014 endpoints - Kkr-cm-kg.aiAI & agents
One paid call on kr-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://kr-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Basekr-cm-kg.aifrom $0.011 endpoint - JJSON Validate, Repair, Convert, AI & agents
Every agent and developer hits broken or confusing JSON. This tool handles the common headaches in one place: check whether JSON is valid with the exact error location, repair near-JSON with typos, pretty-print or minify, pull values out with a path expression, diff two documents, convert to and from YAML or CSV, produce a byte-stable canonical form for hashing, validate against a schema, and repo
BaseSolanajson-suite.underscoredone.comfrom $0.011 endpoint - AAura Agent CommerceAI & agents
Aura deterministic x402 purchase preflight from supplied OpenAPI metadata
Baseaura-revenue.helionixlabs.comfrom $0.012 endpoints - Aagentic-trades.aiAI & agents
One Capital Markets Record for $0.01 USDC — a listed issuer's identity, registry identifiers, aliases, listing, disclosure events, auditor and transfer agent, each field sourced to the public filing, served from the node of the issuer's own market (eleven markets, in-country). Path: /x402/record/{node}/{exchange}/{code}, e.g. uk-cm-kg/LSE/BARC. The same record the free MCP door serves; the payment
Baseagentic-trades.aifrom $0.012 endpoints - Aagent-memory-api-production-f2c4.up.railway.appAI & agents
List all stored memories in a namespace, most recently updated first. Returns a JSON array of memory records.
Baseagent-memory-api-production-f2c4.up.railway.appfrom $0.0012 endpoints - Aaegis-ai.xyzAI & agents
Aegis - Cut Through the Noise in Your Feeds. ブリーフィング トップ3
Baseaegis-ai.xyzfrom $0.0062 endpoints - Uus-agentic.comAI & agents
Fetch a public URL and return clean LLM-ready markdown from static HTML.
Baseus-agentic.comfrom $0.0051 endpoint - Rresearch.appliedidentities.comAI & agents
Three composite AI readiness scores with history
Baseresearch.appliedidentities.comfrom $0.0051 endpoint - Aagentcrush.xyzAI & agents
Verification and tier status for an AI agent on AgentCrush. Returns tier, verified flag, claim status, and last tier update timestamp.
Baseagentcrush.xyzfrom $0.0051 endpoint - Aagent-endpoint-readiness.ryannelson2000.workers.devAI & agents
Deterministic pre-purchase readiness and payment-metadata audit for public agent endpoints
Baseagent-endpoint-readiness.ryannelson2000.workers.devfrom $0.0021 endpoint - Xx402-v2-mint-moderation-brand-safety.vercel.appAI & agents
Brand-safety / moderation scores per category + offending spans + threshold pass/fail + model version. NOT a legal judgment. OpenRouter free-first (Detoxify too heavy for serverless).
Basex402-v2-mint-moderation-brand-safety.vercel.appfrom $0.0041 endpoint - Xx402-v2-mint-github-repo-meta.vercel.appAI & agents
GitHub repo metadata (keyless, User-Agent required). owner/repo → stars/forks/language/license. Soft-fail 403 rate.
Basex402-v2-mint-github-repo-meta.vercel.appfrom $0.0031 endpoint - AAgent Evidence API & US WeatherAI & agents
US weather alerts: active National Weather Service alerts for a two-letter state code - the event, the area, its severity and the official instruction.
Baseagent-evidence-api.thx93.workers.devfrom $0.015 endpoints - DDedge890AI & agents
Invoice Auditor - Check invoices, estimates and contractor quotes for arithmetic errors, inconsistent line items, missing details, and unclear payment terms in a structured audit.
Baseinvoice-auditor.agent.amnt.iofrom $0.011 endpoint - Gguard.genexxis.comAI & agents
Classify text an AI agent is about to read for prompt injection: verdict (safe, suspicious, malicious), score 0-100, findings with matched spans; decodes hidden Unicode tags, HTML comments, CSS-hidden text and base64 before scanning.
Baseguard.genexxis.comfrom $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.