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
All projects
2,776 results- MMCP Operation RiskAI & agents
Analyze operation-level risk inside consolidated MCP tools. Returns evidence-backed ALLOW, DENY, or REQUIRE_APPROVAL decisions, retry semantics, schema-drift status, and a deterministic operation effect ID. Designed for MCP tools whose command/action arguments expose operations with different risk levels.
Base87-106-119-237.sslip.iofrom $0.0022 endpoints
DomainHelpDeveloper toolsTri-state domain registration availability intelligence
Baseapp.domainhelp.comfrom $0.0013 endpoints- Zzoll.halowerk.comCrypto & DeFi
Matches declared classification tokens against a supplied published dual-use control list. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.
Basezoll.halowerk.comfrom $0.0038 endpoints - Llauf.halowerk.comData & research
Distinct from route/matrix: assigns jobs to up to four vehicles and orders visits at a common depot, reports arrival/wait/service/return times, capacity usage and unassigned jobs. Consumes caller travel-time matrix, including durations_s from HALOWERK route/matrix, avoiding a duplicate routing API or invented road data. Deterministic earliest-deadline cheapest-feasible-insertion heuristic; no glob
Baselauf.halowerk.comfrom $0.0068 endpoints - IIslamic Prayer TimesOther services
High-precision Islamic prayer times (fajr, sunrise, dhuhr, asr, maghrib, isha) plus qibla direction for any coordinates and date. Pure astronomical computation (adhan library), 11 calculation methods including Umm al-Qura, Dubai, Egyptian, MWL. Ideal for agents building Muslim-facing schedules, reminders, or travel plans.
Baseapi.qist.infofrom $0.012 endpoints - Aapi.arcgate.devCrypto & DeFi
Swap quote
EVM chain 5042Baseapi.arcgate.devfrom $0.00513 endpoints
WebberSites x402 Data APISearch & webFetch any public web page and return clean, readable Markdown with navigation, ads, and boilerplate stripped. For agents that need article text or documentation as Markdown.
Basex402-data-api.onrender.comfrom $0.0012 endpoints
ProblocksOther servicesVerify payment connectivity with USDC on Base. Returns a JSON pong and UTC timestamp after settlement.
Basex402.problocks.iofrom $0.0011 endpoint- DDataForAgentsSearch & web
DataForAgents — Steam catalog search for agents (name, genre, price filters)
Basedataforagents.netfrom $0.013 endpoints
searchMarkets & financeFull-text search across every aggregated data source in one call: news, SEC filings, court opinions, academic papers, government records, and developer discussions. One query surfaces everything concordant across independently-sourced, citable results -- not a single-source wrapper. Optional source/category/since filters.
BaseSolanaconcordancehq.duckdns.orgfrom $0.014 endpoints- AAgentWireAI & agents
AgentWire service card for webhook inbox relay and web fetch infrastructure.
Basecdp-agent-0-01.onrender.comfrom $0.0011 endpoint - BBase Token SafetyCrypto & DeFi
Base ERC-20 check before an agent buys or holds a token. Input: one contract address. Output: allow, warn, or block. Block: not a contract, not an ERC-20, zero supply, or the owner or token contract holds at least 50 percent. Warn: 20 to 50 percent held, proxy (EIP-1967, EIP-1167, or implementation()), or bytecode contains mint or pause. A selector does not prove the public can call it. Concentrat
Basebase-token-check.fly.devfrom $0.013 endpoints - CCORE JSON ValidatorData & research
Use this service before importing or publishing JSON to check it against a restricted draft-07 schema. Send dataJson and schemaJson as JSON-encoded strings. Max 256 KiB UTF-8 each, depth 32; bounded node and work limits. Supports types, required properties, items, enums and numeric/length bounds. No regex, combinators or external references. Invalid business data returns valid=false.
Baseapi.coregroupimmo.comfrom $0.0023 endpoints - 889-116-220-218.sslip.ioCrypto & DeFi
Base mainnet head: latest block number, block age in seconds, base fee and gas price in gwei. Use it to check the chain is advancing and to estimate fees before sending a transaction. One small JSON read instead of several raw RPC calls and unit conversions.
Base89-116-220-218.sslip.iofrom $0.0016 endpoints - SSWARMSearch & web
SWARM Site Check - Website uptime and link check in one call: is a URL up, its HTTP status, final URL after redirects, response time and TLS/certificate errors. Use when an agent monitors sites on a schedule, verifies a link or domain is reachable before scraping or citing it, or needs to detect a non-200 answer or a broken redirect. Requires `url`. Instant, no AI. $0.002.
Baseswarm-agent.netfrom $0.0026 endpoints - Qquantum-artificer.surewhynot.appCrypto & DeFi
Physical chemistry (Cantera + CoolProp): chemical equilibrium, adiabatic flame temperature, ignition delay, reactor simulation, flame speed, and thermo/transport/fluid properties. Bundled mechanisms (gri30, h2o2, air). Paid in USDC on Base or Solana.
BaseSolanaquantum-artificer.surewhynot.appfrom $0.0035 endpoints - Oonvexia.comSocial & people
Topic ranking. Ranked social topics for a window. Returns topics + window_hours.
Baseonvexia.comfrom $0.0013 endpoints - RRugShield Solana Rug CheckCrypto & DeFi
Solana pump.fun token warnings: sniper-linked fees and creator launch/graduation history. Advisory signals evaluated on selected historical tokens; results may differ for new tokens. Returns RISK_FLAGS or NO_FLAGS; NO_FLAGS does not mean safe. Input: token mint (base58). Replace :address or {address} with the actual mint. Templates are discovery only: do not pay. Ask the user if the mint is missin
BaseSolanagetrugshield.comfrom $0.013 endpoints - Xx402aiSearch & web
Convert text into a 768-dimension embedding vector (nomic-embed-text) for semantic search, RAG retrieval, clustering, deduplication or similarity scoring. POST JSON {"input": string}, up to 3000 characters; returns {embedding: number[768], model, dimensions, elapsed_ms}. One text per call; English works best.
Baseapi.x402ai.devfrom $0.013 endpoints
Geo402Search & webGeo web fetch for AI agents. Fetch any public web page from a residential IP in a chosen country (190+ countries, optional city or US state) as clean markdown, text or HTML, with the product price/currency/availability extracted automatically when the page has product data. $0.005 per page, only charged when the page loads. Respects robots.txt; no CAPTCHA solving; sign-in, payment and email servic
Basegeo402.comfrom $0.0043 endpoints
prices.genexxis.comOther servicesMedian spot price of up to 50 coins across Binance, Coinbase, Kraken, OKX and Bybit in usd/usdt/eur/btc, with per-venue prices, 24h change %, summed 24h USD volume and cross-venue spread %. ids accepts CoinGecko ids or tickers.
Baseprices.genexxis.comfrom $0.0033 endpoints
odds.genexxis.comOther servicesMost traded open prediction markets right now across Polymarket and Kalshi, ranked by 24h volume, with implied probabilities and links.
Baseodds.genexxis.comfrom $0.0053 endpoints- Iinsider-radar-agentMarkets & finance
Same KOL confluence feed as kol_signals_live with every row at least 45 minutes old — the evaluation tier
SolanaBaseinsider-radar-agent.insider-radar-agent.workers.devfrom $0.015 endpoints
depth.genexxis.comDeveloper toolsKorea premium per coin: Upbit and Bithumb KRW prices vs the Binance USDT price, converted with the ECB USD/KRW reference rate (date returned); without symbols, the top 20 Upbit markets by 24h KRW volume.
Basedepth.genexxis.comfrom $0.0032 endpoints- AAgent Rest StopCrypto & DeFi
Read a public web page and return its visible text. Send url. The response includes the final url, the page title, the HTTP status, and the page text.
Baseagentreststop.comfrom $0.0024 endpoints - 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 - Xx402 CheckupOther services
Checkup for x402 buyer clients. Pay once and get a field-by-field diagnosis of the payment your client signed (amount, recipient, validity window, clock offset, nonce, EIP-712 signature) and of the request that arrived, plus the facilitator's verify and settle results. Base mainnet payments get the full diagnosis; Base Sepolia payments get a preview with the status of each check only.
BaseBase Sepoliacheckup.kagurazaka.devfrom $0.0051 endpoint - FFlowCrypto & DeFi
Use when an agent is about to pay another agent and needs one finished answer first: should you pay this payee? PayCheck ($0.50) runs Flow's whole checker stack on the payee — payee verdict (kind, activity, contract safety), wallet approval-exposure audit, and recent USDC settlement history on Base — returning one grade (ALLOW / REVIEW / BLOCK, 0-100), a verify_status, all checks, the evidence, an
BasePolygonArbitrum+1flow-kg4x.vercel.appfrom $0.019 endpoints - FffpipeImages, audio & video
Extract still frames from any video as JPEG, WebP or PNG: sample many for a vision model, or grab one frame at a given timestamp (a thumbnail/poster/screenshot). Modes: every frame, every Nth, a rate in seconds, keyframes, N evenly spaced, or exact timestamps. One frame at 5s: mode=timestamps, timestamps=[5], format=jpeg. Up to 1000 frames/job; result is a manifest of frames with timestamps and do
Baseffpipe.devfrom $0.012 endpoints - Ppitcrew-api.appin60.comCrypto & DeFi
Why did my transaction fail? Give a chain and tx hash; get status, decoded method, gas used vs limit, fee, token transfers, events and, for failed transactions, the decoded revert reason (Error(string), Panic codes, custom errors resolved by signature) with a plain-language fix. Pending transactions get a stuck-transaction diagnosis (nonce gap, underpriced fee) and the replace/cancel recipe. Chain
BaseArbitrumpitcrew-api.appin60.comfrom $0.0057 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.