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
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4,372 results- Ffetchwerk Web ExtractionSearch & web
Extract up to ten URLs in one paid call.
Basefetch.netzhandwerker.defrom $0.0081 endpoint - SameDayDeskSearch & web
x402 Service Index the full directory record for live p. Hosted API via Speedbot; provider price plus 8% fee. version=external_api_f1e23f468705020f057cf4cad5af4804 checksum=f1e23f468705020f057cf4cad5af48040228d0cb1eb2f30ac24b1f3e52a8cca5 listing=8bc51cbe53c13640db7ce41d8e544bada0cffc0ef1f61e0ec39ad6d4bdc3b094
Basespeedbot.devfrom $0.003330 endpoints - Aapi.agentfeeds.jpCrypto & DeFi
Freshness heartbeat only (list date, address count, fetched_at) for both Japan MOF and OFAC sanctions lists. No addresses. Cheapest polling entry point for change-detection loops.
Baseapi.agentfeeds.jpfrom $0.00114 endpoints - FFrontera SignalOther services
Use to check what common building materials cost on the shelf in the Rio Grande Valley (McAllen, Mission, Edinburg): 2x4 and 2x6 studs, OSB, drywall, concrete mix, CMU block, rebar, shingles, underlayment, housewrap, insulation, paint, doors, deck screws. Dated prices at big box stores and a local yard, checked twice a week, for estimating or checking a bid. Not a quote. Example: "What does a shee
Basefronterasignal.comfrom $0.0114 endpoints - HHyperliquid Prediction MarketsCrypto & DeFi
The catalog of Hyperliquid prediction-market outcomes and their metadata.
BasePolygonArbitrum+1hyperliquid-predict.use.x402atlas.comfrom $0.0052 endpoints - EEmail ValidateSocial & people
Validate an email address using syntax, MX, disposable-domain, role-account, and domain-risk checks. Returns structured validation data for agent workflows, signup hygiene, and lead-quality checks. Does not guarantee that an individual mailbox exists.
Baseagent-vending-production.up.railway.appfrom $0.00115 endpoints - Bbtcnode.ukOther services
Mempool congestion: pending tx, size, usage — flat $0.001 per call, USDC on Base, no signup.
Basebtcnode.ukfrom $0.00116 endpoints - SSettledData & research
Price: $0.002 in USDC on Base. Signed check of an x402 endpoint before you pay it: who really pays it on Base (settlements and unique payers over 30 days), a fresh unpaid probe (cached ≤5 min) with status, latency and the parsed quote, payability, paying agents' reports, the seller's claim, the scout's last real purchase (settlement transaction and whether it matched the listing), a quality score
Basesettled.toolsfrom $0.0026 endpoints - Oopenworker.etips.meCrypto & DeFi
Returns a single, verifiable snapshot of any EVM wallet: native balance, ERC-20 token balances, current block number, and recent activity count across the most popular chains (Ethereum, Base, Arbitrum, Polygon). Built for x402 agents that need on-chain facts without managing RPC keys or node infrastructure. Each call returns a deterministic JSON payload with a chain-specific block number at snapsh
Baseopenworker.etips.mefrom $0.0113 endpoints - VedettaSocial & people
Recent analyst desk posts as a stream (?since_id=&asset=&limit=): cached, instant, half a cent. Poll it cheaply; escalate to a live read when something moves. Descriptive research, not financial advice.
Basevedetta.dethboy.comfrom $0.00517 endpoints - AApiToll Reddit SearchSocial & people
Reddit search scraper — keyword-search all of Reddit, or scope to one subreddit, for AI agents. Find posts matching any query, sorted by relevance, top, new, hot, or comments, with an optional time window. Returns each post’s title, author, subreddit, score, comment count, permalink, external link + domain, flair, and timestamp. No login, no API key. Track brand mentions, monitor topics, and surfa
BaseSolanareddit.apitoll.cloudfrom $0.034 endpoints - Llibrary.proofivy.comCrypto & DeFi
Get list of all available CryptoSlate content URLs with their last updated dates
Baselibrary.proofivy.comfrom $0.015 endpoints - Aah-package-checkSocial & people
Given an open-source package (PyPI, npm, Go, Cargo, Maven, NuGet or RubyGems) and optionally a version, returns its known vulnerabilities from OSV.dev (IDs, CVE aliases, severity, fixed-in versions), license, latest version, publish date and deprecation status from deps.dev, plus a one-line recommendation. For coding agents to call before adding or upgrading a dependency. Not charged if the packag
Basex402.agentharbor.agencyfrom $0.00310 endpoints - Aagent-briefs.walletstarter.workers.devCrypto & DeFi
Daily JSON bundles for agents: BTC/ETH volatility regime, crypto news with top x402 sellers, Brazil business calendar, x402 agent economy, Base chain gas, US macro (CPI, unemployment, SOFR). This route serves the btc-eth-vol-regime bundle.
Baseagent-briefs.walletstarter.workers.devfrom $0.016 endpoints - AAgoranomeCrypto & DeFi
x402 ping and test payment: can my wallet pay an x402 API? Pay a fraction of a cent in USDC on Base and get a signed receipt back, proof that your wallet and x402 client complete a real paid call end to end, plus what the Lab knows about your wallet and which tool to try next. Use when an agent needs a cheap test payment endpoint before buying anything bigger.
Baseapi.agoranome.comfrom $0.00114 endpoints - DDealPulseAI & agents
Student discounts / college student deals / verified student savings by category. Returns the best current verified student discounts for a category, with how to verify student status to claim each. For shopping and savings agents.
BaseSolanaPolygon+8dealpulse.theaslangroupllc.comfrom $0.0515 endpoints
domainaudit.genexxis.comDeveloper toolsDomain registration and DNS in one call: RDAP registrar, created, updated, expires (days left), status codes, nameservers, DNSSEC, plus DNS A, AAAA, MX, NS, TXT and CAA records.
Basedomainaudit.genexxis.comfrom $0.0038 endpoints- Rroute-a-worker.frostskynet-api.workers.devAI & agents
Converts text, JSON or JSONL to cleaned JSONL using fixed rules. Removes empty, short and duplicate rows; can repair some encoding issues. No AI or CSV parsing.
Baseroute-a-worker.frostskynet-api.workers.devfrom $0.0053 endpoints - Mmarketplaceforaiagents.comSearch & web
Google Search API: Give a query, get ranked organic results with title, link, snippet, plus knowledge graph and related searches. $0.003 USDC per call on Base.
Basemarketplaceforaiagents.comfrom $0.0032 endpoints
Trading Zones ETH 4H SetupCrypto & DeFiUse this when a user or autonomous agent requests a current Ethereum (ETH) 4H crypto market decision with entry, liquidity-zone stop loss and take profit. Returns LONG, SHORT or NEUTRAL, confidence, R:R and nine indicators. Free, independently countable live-simulation evidence is available before purchase. Price: $0.03 USDC via x402 on Base Mainnet; no API key or account. Public evidence and purc
Baseapi.tradingzones.appfrom $0.036 endpoints- AagentdropAI & agents
OpenAI-compatible chat completions on frontier models: GPT-6.1 Sol and Terra, GPT-5.5, Claude Sonnet 5.5 and Haiku 5.5, Gemini 3.8 Flash, Grok 4.7, GPT-6 Luna, gpt-oss.
Baseagentdrop.fyifrom $0.0013 endpoints - PPage LinksCrypto & DeFi
Fetch a reviewed public page and return its links with resolved absolute URLs and anchor text, the canonical URL, the declared meta robots directive, and how many links leave the host. Relative hrefs are resolved against the page, so a caller never has to guess a base.
Baseapi.zfinia.comfrom $0.00414 endpoints
IP Lookup APISocial & peopleIP Lookup API. Enrich an IPv4 or IPv6 address with geolocation, ASN, ISP, organization, reverse DNS, timezone, and proxy/mobile/hosting indicators. Useful for security, fraud checks, abuse triage, bot detection, traffic enrichment, and infrastructure investigation. Paid per call via x402.
Basetools.ipintel.aifrom $0.0019 endpoints- SStraits.live premium dataMarkets & finance
AI-assisted Strait of Hormuz daily situation brief as structured JSON: prose summary, bullets, and key figures, by date or latest, with archive access by date.
Basestraits.livefrom $0.017 endpoints - Xx402-api-production-bd43.up.railway.appOther services
Current BTC price in USD
Basex402-api-production-bd43.up.railway.appfrom $0.0058 endpoints - OOld Colony Web Agent ServicesCrypto & DeFi
For $0.002, privacy-conscious email preflight: submitted addresses and request bodies are not intentionally logged in routine application telemetry (full address still reaches our server). Inspect syntax, DNS/MX, listed disposable domains and provider typos; receive structured decisions. API reverse-proxy access logging is disabled; infrastructure/payment providers may keep records. No zero-retent
Baseapi.oldcolonyweb.comfrom $0.0025 endpoints - Xx402 Trust ScoreCrypto & DeFi
Trust score (0-100, grade A-F) for any x402 endpoint, cataloged or not: 30d uptime, 402-envelope compliance, latency, age, real on-chain USDC settlement volume, and price stability, with a full auditable breakdown. Uncataloged endpoints are live-probed on first query and auto-adopted. Know before you pay.
Basex402-trust.comfrom $0.0059 endpoints - Ggblin.digitalAI & agents
Call before your agent pays an x402 service it has not used recently: is that endpoint actually alive? Liveness of the ~200 most recently updated Bazaar listings, probed in rotation (each about every 36h): HTTP status, latency, last-OK time and consecutive failures per endpoint. Measurements only, no judgements; the probes never pay. Free aggregate view: gblin-mcp.gblin-mcp-worker.workers.dev/cata
Basegblin.digitalfrom $0.0014 endpoints - GGEDX402 ChatAI & agents
OpenAI-compatible chat completions across many open models, paid per call in USDC with no API key. POST { model, messages, max_tokens? } and pick model from GET /v1/models (fast, smart, code, reasoning and 70B tiers, among others). The price is set from the model's rates and your request size, so short prompts on small models cost the least; the 402 shows the exact amount before you pay. Hero: GET
Basechat.gedx402.comfrom $0.0051 endpoint - JJapan Business Day APIOther services
Japanese traditional calendar for a date: rokuyo (taian/butsumetsu... lucky days used for weddings, funerals, contracts), Japanese era (Reiwa) date, old lunisolar calendar date incl. leap months, 24 solar terms (sekki) and year eto. Verified against the National Astronomical Observatory of Japan.
PolygonBasejapan-business-day-api.matchan962.workers.devfrom $0.00510 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.