Explore APIs
Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
- Projects
- 4.4K
- Paid endpoints
- 87K
- Paid calls · 30 days
- 885K
- Launched here
- 0
Developer tools
167 results- MMysticAPIDeveloper tools
Live universal sky snapshot, no inputs: geocentric ecliptic longitudes for 13 bodies (Sun through Pluto, Chiron, lunar nodes) with zodiac sign/degree and 64-gate wheel placements, current moon phase and illumination, active retrogrades, and a 30-day almanac of upcoming stations and lunations. JPL-validated ephemeris. JSON. $0.01 USDC via x402, or API key.
BaseSolanamysticapi.comfrom $0.011 endpoint - Eedge.goldsky.comDeveloper tools
Goldsky Edge RPC — prepaid balance, funds ~1000 requests at 5 atomic units each
BasePolygonArbitrum+10edge.goldsky.comfrom $0.00510 endpoints - HHijri Date ConverterDeveloper tools
Convert Gregorian dates to Hijri (Umm al-Qura calendar) and back. Returns day/month/year, Arabic and English month names, and a formatted Arabic date string. Essential for agents handling Islamic events, Ramadan, Hajj seasons, or Arabic documents.
Basebazaar-catalog.vercel.appfrom $0.012 endpoints - Ccarry.genexxis.comDeveloper tools
Convert an amount between ~50 currencies at the official reference rate (Bank Al-Maghrib for MAD pairs, ECB otherwise, cross via EUR), with rate, date and source.
Basecarry.genexxis.comfrom $0.0033 endpoints - Ddwelldata.ioDeveloper tools
Entry tier of the multifamily deals feed: every active listing at card level — address, price, units, advertised cap rate, listing URL, freshness — without the computed underwriting or scoring. Same coverage, cheapest way to evaluate the feed. Same query filters as the full feed. Every field typed; a query that matches nothing returns free — you never pay for a blank.
Basedwelldata.iofrom $0.014 endpoints - SSubmitCheckDeveloper tools
Launch directories from 11 popular public lists that were dead, unreachable, erroring or redirecting to another site on our Oct 2026 live check (DNS re-checked over DoH). Drop them from a launch plan. Optional filter by status kind.
Basesubmitcheck.appin60.comfrom $0.0024 endpoints - DDecode Morse codeDeveloper tools
Decode international Morse code back into text. Letters are separated by whitespace and words by "/". Unknown Morse sequences are clean 400s.
Basenato.openverbs.comfrom $0.0024 endpoints
notary.genexxis.comDeveloper toolsCurrent UTC time (ISO and unix ms) signed by the genexxis notary key, with the signed message and signature for independent verification.
Basenotary.genexxis.comfrom $0.0032 endpoints- BBitcoin Tech Radar - Aaron ZhangDeveloper tools
Status of every Bitcoin Improvement Proposal as JSON: number, layer (consensus soft fork, peer services, applications), title, type and status (Draft, Complete, Deployed, Closed...), with links. Parsed live from the bitcoin/bips repository index, plus counts by status.
BaseBase Sepoliabtc-radar.vercel.appfrom $0.013 endpoints - SStableUploadDeveloper tools
Buy a site upload slot. Upload a zip file, then activate to extract and serve as a static site.
SolanaBasestableupload.devfrom $0.0052 endpoints - SSchedule & Timezone ToolsDeveloper tools
Cron next-run calculator — generate future times for bounded five-field POSIX cron schedules in IANA timezones with explicit daylight-saving (DST) policies.
BasePolygonArbitrum+1schedule-tools.use.x402atlas.comfrom $0.0055 endpoints - IInspect code pointsDeveloper tools
Decode a base64 byte buffer from one character set and re-encode it into another (utf-8, utf-16le, utf-16be, latin1, ascii). Characters that the target set cannot represent, or bytes invalid for the source set, are clean 400s.
Baseencoding.openverbs.comfrom $0.0024 endpoints - TToolshedDeveloper tools
YAML to JSON. POST a YAML document; the response is pretty-printed JSON. Anchors and aliases are resolved, and a multi-document stream converts as its FIRST document rather than as an array — the direction that bites, because YAML is the larger language.
BaseSolanatoolshed.lemon-agent.devfrom $0.0025 endpoints - Ssupplier-risk-api-production.up.railway.appDeveloper tools
Website abandonment check for a company domain. Fetches the homepage now and says why it is or isn't serving: hosting billing lapsed (Vercel, Squarespace, Wix), site removed from its platform, CDN origin unreachable, parked or for sale, 410 gone, bot challenge, or serving. For domains Tiag Scovik watches nightly, adds the date the current state began and up to 30 nights of history. Use before payi
Basesupplier-risk-api-production.up.railway.appfrom $0.012 endpoints - Aapi.switch402.comDeveloper tools
switch402 PDF to text: a public PDF URL in, its text page by page out (up to 50 pages, 10 MB). Charged only when text comes back.
Baseapi.switch402.comfrom $0.0036 endpoints - Mmcpfax-markets.bowling-anthony.workers.devDeveloper tools
Base gas price — Live Base mainnet gas price from JSON-RPC.
Basemcpfax-markets.bowling-anthony.workers.devfrom $0.0053 endpoints - SStableDomains DropsDeveloper tools
Expiring, pending-delete and just-dropped domains with backlink authority (Majestic referring subnets), Wayback archive history and brandability score. Registrable with USDC at stabledomains.net.
Basestabledomains.netfrom $0.017 endpoints - KKertivo Shield (full)Developer tools
Full-history address-poisoning check before you send USDC on Base. Same risk/lookalike/seenBefore logic as /address/check, but funding history comes from ONE Blockscout index call (x402, up to the sender's 500 most recent Base USDC transfers; v2 page fallback) so coverage is usually the sender's full Base USDC history. Body {from, to}. Not charged if the index is down. Cheap partial/RPC tier: POST
Basekertivo.comfrom $0.0053 endpoints - MMAC AddressesDeveloper tools
Report the properties of a MAC address encoded in its first octet: unicast vs multicast (I/G bit), universal vs locally-administered (U/L bit), the broadcast address, and — for EUI-48 — the OUI and NIC portions.
Basemacaddress.openverbs.comfrom $0.0025 endpoints - Aaction402.vercel.appDeveloper tools
Paid webhook/API execution for autonomous agents. Executes one public HTTPS action after x402 payment, applies retries and idempotency, then returns a signed receipt with request hash, response hash, target, status, and attempt count.
Baseaction402.vercel.appfrom $0.0031 endpoint - 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 - 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 - 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 - EEmail authenticationDeveloper tools
Evaluate an SPF record against an IPv4/IPv6 address using only its literal ip4/ip6/all mechanisms. DNS-dependent mechanisms (include, a, mx, exists, redirect) reached before a match yield an honest `indeterminate` result rather than a guess.
Baseemailauth.openverbs.comfrom $0.0044 endpoints - Sscribe.vimabrosta.comDeveloper tools
Look up a domain: registration data from RDAP (registrar, created, expires, status, nameservers), live DNS records (A, AAAA, MX, NS, TXT, CNAME), the TLS certificate served at the name (issuer, validity, alternative names, fingerprint), and the HTTP front door (status, server, redirect). One JSON answer, no API key, no rate-limited WHOIS. GET with ?name= or POST. $0.005.
BaseSolanascribe.vimabrosta.comfrom $0.0053 endpoints - Xx402-v2-mint-domain-intel.vercel.appDeveloper tools
DNS + WHOIS/RDAP + TLS composite for one domain. Settles only if ≥1 facet non-empty; else charged:false. Reuses dns-lookup / whois-rdap / ssl-cert-check helpers.
Basex402-v2-mint-domain-intel.vercel.appfrom $0.0051 endpoint - Aapi.rafidsystem.comDeveloper tools
Calculate gross/net rental yield, income, operating costs and simple payback in OMR. Calculations only. Paid per call via x402; no API key required.
Baseapi.rafidsystem.comfrom $0.011 endpoint - CColor schemeDeveloper tools
Find the nearest CSS named color to a given color, by perceptual distance.
Basecolor.openverbs.comfrom $0.0024 endpoints - EexecboxDeveloper tools
Execute code in any supported language. 5s CPU timeout, 128MB RAM. Supports 40+ languages including Python, JavaScript, C, C++, Java, Go, Rust.
Baseexecbox.xyzfrom $0.0021 endpoint - MMoon phaseDeveloper tools
Compute the Moon's phase name, age in days since the last new moon and illuminated fraction (0..1) for a UTC date/time. Uses the mean synodic month (29.53 days).
Baseastro.openverbs.comfrom $0.0043 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.