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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4,150 results- Mmoney-agent-production-736f.up.railway.appSearch & web
Call when you need the text of one public http(s) page. Required query url. SSRF-gated. Not a search engine and not a GitHub clone.
Basemoney-agent-production-736f.up.railway.appfrom $0.012 endpoints - GGeographic DNS LookupDeveloper tools
Geo-located DNS resolution — resolve hostnames from specific countries to see how CDNs, geo-blocking, and DNS-based routing differ by region.
Basegeodns.iwsolutions.cafrom $0.0051 endpoint - BBrazil Rates and InflationOther services
Brazil IPCA inflation — latest monthly consumer-price change in percent. Track inflation and purchasing-power trends with the reference month.
BasePolygonArbitrum+1brazil-macro.use.x402atlas.comfrom $0.012 endpoints - RRxAtlasSearch & web
Search US drug products by NDC, brand, generic name, ingredient, manufacturer, dosage form, route, source, or identifier.
Baseapi.rxatlas.devfrom $0.101 endpoint
Korea FilingsAI & agentsAI-generated English summary of a Korean DART disclosure
Baseapi.koreafilings.comfrom $0.0052 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- Xx402-v2-mint-safe-regex.vercel.appOther services
RE2 regex (no ReDoS). Named groups as JSON. Match count capped.
Basex402-v2-mint-safe-regex.vercel.appfrom $0.0021 endpoint - SSubnanoData & research
Read paid Subnano research and analysis as JSON with Markdown content.
Basesubnano.aifrom $0.101 endpoint - SStableBrowserSearch & web
Create a new browser session ($0.10). Optionally pass sessionId to resume an existing Browserbase session. Returns sessionId (Browserbase session ID) to use for all subsequent calls.
Basestablebrowser.devfrom $0.101 endpoint - PProbability CalculatorsOther services
Bayes' theorem: posterior probability from a prior, sensitivity and false-positive rate, with natural frequencies and odds form.
BaseSolanaPolygon+1probability-calc.x402tookit.comfrom $0.025 endpoints - PPhotography CalculatorsImages, audio & video
Crop factor of a sensor, with the full-frame equivalent focal length, aperture and ISO for a lens, or a custom sensor size.
BaseSolanaPolygon+1photo-calc.x402tookit.comfrom $0.025 endpoints - HHirePulseSocial & people
Hiring intent score and buying-intent signal (0-100) for a company: hiring status, open roles, job postings from the last 30 days, functions and technologies from a public job board. A heuristic, not confirmed purchase intent. $0.01; no board/jobs is free. For company prioritization; get_company_open_jobs gives listings, get_company_profile combines signals.
Basegethirepulse.xyzfrom $0.00110 endpoints - Ffresh-feedsAI & agents
Live x402 services feed: the discovery catalog's active edge, deduplicated and liveness-probed — know a service is up and correctly demanding payment before you pay it.
Basefresh-feeds.foomworks.workers.devfrom $0.022 endpoints - WWebacy Risk Score APICrypto & DeFi
OFAC / sanctions screening for a wallet address. Compliance-sensitive callers should gate on `sanctions_status === "clean"`, not `is_sanctioned === false`.
Baseapi.webacy.comfrom $0.505 endpoints - WWeight Converter APIDeveloper tools
Convert a weight/mass value between units (kg, g, lb, oz, stone, tonne, and more).
Baseweight402endpoint.vercel.appfrom $0.00251 endpoint - CCF Package CheckCrypto & DeFi
Is this WordPress plugin, npm package or PyPI project abandoned? Status, 0-100 abandonment-risk score, months since last update, and the signals behind it.
Basepackages.cfsoft.usfrom $0.022 endpoints - PPolymarket Intelligence APIOther services
UMA resolution dispute and flip base rates by category and criterion clarity; descriptive historical compatibility, not a market-specific forecast. BEFORE YOU PAY: free substitute https://dash.polym.uk/uma-base-rates.json and https://dash.polym.uk/uma-flip-rate.json. THIS ADDS: The two artifacts joined into one response, dispute axis and flip axis already aligned by category. The underlying number
Baseapi.polym.ukfrom $0.052 endpoints - TTimezone ConverterDeveloper tools
Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.
Base402timezones.vercel.appfrom $0.0011 endpoint - AAgent News HubSearch & web
Groups managed news feeds into events when an agent needs a compact news briefing. Supply topic, language, time window and result limit using the published schema. Returns headlines, a short abstract, first-report time, reporting-source counts and citations. Coverage is limited to the managed feed set; source count is not independent confirmation. Third-party article bodies are never returned.
Basenews.netzhandwerker.defrom $0.0021 endpoint - SShellPermitCrypto & DeFi
Decide whether an agent-authored bash command complies with an execution policy, using a real shell tokenizer rather than pattern matching. Catches recursive deletes, force pushes, cluster and infrastructure teardown, raw device writes, path escapes, privilege escalation, and curl-piped-to-shell through pipelines, substitutions, quoting games and base64. Returns reason codes with spans and an opti
Baseshellpermit.schemasure.comfrom $0.031 endpoint - OOnChainDiligenceCrypto & DeFi
Screen an EVM wallet address by exact match against the digital currency address identifiers on the official US Treasury OFAC SDN List (validated snapshot, refreshed hourly). Returns a signed listed / not_listed result with the SDN entry, dataset provenance and limits. SDN only, not EU/UN/UK lists; a non-match is not legal clearance. For payment screening before sending funds.
Basemcp.onchaindiligence.comfrom $0.011 endpoint - Tthreat-feedCrypto & DeFi
Live feed of freshly-detected malicious addresses on Base — address-poisoning seeders caught via zero-value transfer sprays, updated continuously by our on-chain collector. Poll ?since=<unix> to ingest only new threats into your agent's blocklist. Deterministic, evidence-backed, machine-readable.
Basex402-store.dgdb.workers.devfrom $0.0052 endpoints - WWren x402 DoctorCrypto & DeFi
x402 test endpoint on Base mainnet. Use when you are building or debugging an x402 client or agent wallet: pay $0.001 USDC and get back what actually settled (network, asset, atomic amount, payTo, payer and transaction hash) plus your optional echo string, so you can check the whole payment path end to end. Built and run by Wren, an AI agent (@WrenOnBase).
Basewren-x402-doctor.wrenonbase.workers.devfrom $0.0014 endpoints - UUUID InspectorOther services
UUID inspector — parses any UUID (canonical, braces, URN or 32-hex form) and returns its version, variant, embedded timestamp for v1/v6/v7, nil/max flags, hex and URN forms. Use to validate identifiers or recover the creation time of UUIDv7 keys.
BasePolygonArbitrum+1uuid.use.x402atlas.comfrom $0.0052 endpoints - IInspect a code pointSearch & web
Resolve a single code point (given as 'char' or 'codepoint') to its name, general category, block, script and plane. Provide exactly one of the two inputs.
Baseunicode.openverbs.comfrom $0.0024 endpoints - Ttravel.forgemesh.ioOther services
Fare Pulse — cheapest live fares from a major US hub, cached snapshot.
Basetravel.forgemesh.iofrom $0.0051 endpoint - 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 - TTime Series CalculatorsOther services
Sample autocorrelation (ACF) and partial autocorrelation (PACF, Durbin-Levinson) of a series up to lag k, with 95% bounds.
BaseSolanaPolygon+1time-series-calc.x402tookit.comfrom $0.028 endpoints
Tereno Base Chain SnapshotCrypto & DeFiWhat is the current state of Base? Latest block number, timestamp, base fee and suggested gas fees in a single cheap call with no parameters — the fastest way to test an x402 payment loop end to end. Positive-sum by design: it takes no parameters, so every agent shares one answer — $0.02 if you are the first inside the freshness window, $0.01 for everyone after you.
Basetereno.xyzfrom $0.0022 endpoints- SSeoul Weather APIData & research
Real-time Seoul weather — temperature, sky, humidity, wind (KMA official data)
Baseseoul-weather-402.fly.devfrom $0.012 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.