x402 Pay-Per-Call APIs for AI Agents
Pay-per-call APIs that use the x402 protocol: the server answers HTTP 402 with payment details, and an agent pays per request, usually in USDC, without an account or API key. Entries come from a public x402 discovery index, and each provider sets its own price.
Pyfile x402 API
Web search: ranked results (title + url) for a query. ?q=x402+agent+payments&limit=8
quietstore-production.edge-7e13f.workers.dev
Smallest paid pack ($0.005): a machine-readable merge checklist and a one-request smoke purchase on this store. After you verify the rail, browse…
risk-oracle-api.rohan-rajnikanth.workers.dev
Deterministic reserve-condition risk assessment for native USDC on Aave V3 Base
Agent Output Verifier
Check an AI agent's track record: signed verification history, pass/fail counts, recency-weighted score. $0.01 per lookup when there is a score; a…
ShopperPulse
Know Your Merchant (KYM) trust score: pass a merchant domain and get a deterministic 0-100 trust score with a band (high/medium/low/very_low/avoid)…
Manta Signal Gate
Live positions and the last 24 hours of events of one live bot
AgentTalk
Before your agent negotiates or shares data with another agent, make both prove they qualify. Open a channel with on-chain conditions (hold…
SovereignRisk
Per-country sovereign economic / default-risk score (?country=<name or ISO3>)
Sports Predictor
Calibrated 1X2 probabilities plus derived markets (totals, BTTS, correct score) for every upcoming fixture across the big-five European leagues.…
JoJ API
Spotify — GET /v2/album/detailsAndTracks (v2/Album details & tracks)
StableTickets
Search Ticketmaster events by keyword, date, location, venue, attraction, or classification
static-page-extractor.mekler.ai
Fetch one public static HTML page after robots and public-address checks, then return bounded readable text, title, final URL and source links.…
ThreatPulse
Is this CVE weaponized? Returns enriched threat intelligence with exploit status, CVSS, EPSS, CISA KEV, ransomware mapping, and urgency score from 7…
402api Token Check
Call before buying, swapping into or accepting any Base ERC-20, to learn if you can sell it back. $0.02, ~1-3 s, measured on-chain: honeypot test…
Parse a User-Agent
Break a User-Agent string into browser, engine, operating system (each with a version) and device type. Unidentifiable components are reported as…
Veridictum Legal
Verify one legal citation. Body: {"citation": "<string>"} - full ("Miranda v. Arizona, 384 U.S. 436 (1966)") or bare ("384 U.S. 436"); the case name…
verifier.quantumshieldlabs.dev
Return an advisory ALLOW, DENY, or ESCALATE decision by comparing a bounded action request with authority, constraints, and evidence supplied by the…
wage-verify.iykykblog.workers.dev
Market salary bands + offer verdict by SOC occupation and metro area. Returns annual wage percentiles (p10/p25/median/p75/p90), mean, employment,…
Get Wikidata entity
Fetch a Wikidata entity by Q-id: label, description, aliases and its claims (property → values).
witnessd.vip
Independently fetch, hash, timestamp and archive a URL or API response; returns a signed certificate. Merkle-anchored on Base hourly. Neutral…
AI Data Tools
Data Quality Gate: deterministic dataset quality verdict
x402-agent-pay.com
Buy agent energy (kWh) up to a max price — matches cheapest resting sellers, settles USDC to seller wallets on Base L2
x402-dataviz-poc.theliminalguy.workers.dev
Render a bar/line/area chart to SVG (v2 discovery probe)
x402-demo-discovery-endpoint.vercel.app
Demo endpoint for x402 resource discovery
x402-market.kore-app.workers.dev
Aggregated crypto market snapshot: prices, Fear & Greed, DeFi TVL, dominance, top stable yields.
jev-filter
Filter up to 25 records against up to 10 yes/no criteria you supply. Each record comes back with keep / review / drop, a reason naming the criterion…
x402 Pulse
Live BTC/ETH/SOL prices + the Crypto Fear & Greed Index in one call. Sourced from CoinGecko and alternative.me public data, combined for convenience.
Scalogy Real Estate Deals
Proprietary, daily-scored US residential real-estate deals for investors. Each on-market listing is graded (STRONG / MODERATE / FAIR) for flip,…
Musebook intel feed
Call when you want the current Musebook money-challenge leaderboard, trending lobby posts, and newest Playbook skills in one payload. $0.01 USDC
SameDayDesk
Extract a public HTTP(S) page into JSON: title, description, JSON-LD, Open Graph, headings, links, and AI-readiness signals. No JavaScript;…
x402.getautomatedrcm.com
Healthcare text de-identification engine (demo endpoint — SYNTHETIC/TEST DATA ONLY, never send real PHI; nothing is stored). Strips names, DOBs,…
Mercer x402 (hub probe)
Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.
x402.wach.ai
Comprehensive token verification report, token metadata, and risk signals powered by WachAI for EVM and Solana assets. After your call, please rate…
x402dir.com
x402dir facilitator recommender: pick the best x402 payment facilitator by chain, token, and monthly volume. Returns ranked facilitators with fee…
Xcatcher
Retrieve recent public X/Twitter posts from one or more named public account handles for monitoring, comparison, OSINT, social intelligence, and…
Signal Ledger Research API
Financial statement coverage check / 财报可分析性检查. Verify whether supplied filing text contains the statements, period, metric basis and original source…
ACODA Liquidation Intelligence
Aggregated perp market state: OI-weighted mark/index price, open interest, funding, per-venue breakdown and freshness across 7 live venues.
agent-climate-verify.iykykblog.workers.dev
Climate normals + hazard statistics for a US location, computed from NOAA GHCN-Daily station observations (CC0): 1991-2020 normals (mean…
agent-contract-proof.mattskowronis.workers.dev
Compare an agent's advertised contract with its live x402 challenge and return deterministic proof.
Agent Deals
Find the cheapest WORKING x402 service for a task. Compares thousands of paid APIs from the Coinbase, PayAI and Dexter catalogs by similarity, live…
agent-debarment-check.iykykblog.workers.dev
Check whether a person or company appears on the SAM.gov federal exclusions (debarment) list. Query by name, UEI, or CAGE code. Returns exclusion…
agent-endpoint-readiness.ryannelson2000.workers.dev
Deterministic pre-purchase readiness and payment-metadata audit for public agent endpoints
Fed event calendar
Upcoming Federal Reserve FOMC meetings, press conferences, speeches, testimony and releases with ET times, speakers and a market-moving flag.
Agent Paycheck
Pre-payment risk and usefulness check for AI agents deciding whether to pay an x402 endpoint.
Fortune Demo
Random fortune — fixed price; x402 exact or MPP one-shot
agentic-coverage.ai
One paid call on agentic-coverage.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its…
agentwholesale.vercel.app
Agent-ready keyword trend intelligence for 1-5 keywords in a country. Returns normalized relative-interest data. Not Google Trends.
agora-x402-production.up.railway.app
Official French company data (SIRENE/RNE), cleaned: identity, geolocated HQ, NACE code, headcount, latest revenue and net income.
agvps
Rent a Linux server for a month and get root access: 1 vCPU, 1 GB RAM, 10 GB NVMe, a dedicated IPv4 address, Ubuntu 24.04, in Germany or Finland.…
airscout.scalpstream.com
AirScout air-quality query (current AQI, EPA activity verdict, and the cleanest window ahead)
Agent Payload Tools
Hash text, strings, or UTF-8 payload data with SHA256, SHA384, or SHA512. Compute a cryptographic hash, checksum, or digest for payload integrity,…
Agent Preflight
Pre-execution decision for a metered search or browse tool call. Evaluates the proposal; does not execute the external tool.
api.ambolt.dev
Resolve a company name, website domain, registry number, LEI or VAT number to its official legal entity: registry, registry number, legal form,…
BotPay NFT Mint
Mint a BotPay NFT on Base after an x402 USDC payment.
BuiltWith
Return BuiltWith technology detections and metadata for one domain. Useful for company research, stack analysis, competitive intelligence, and sales…
api.freestylevault.com
Committed IFTA tax rates for a quarter (?quarter=2026-Q2&fuel_type=diesel&jurisdiction=WA), grouped by jurisdiction × fuel type with effective…
GenTech Defi
GenTech Labs x402 - Defi
Korea Filings
AI summaries for the most recent DART filings of a Korean ticker
Lorg Check
Is this address safe to pay? Sanctions lists, scam labels, EIP-7702 sweeper wallets, address-poisoning look-alikes and where the wallet's first…
Mail Security Tools
Mail Security Tools API: Graded email security score (0-100, A-F) for a domain. Scores SPF (30), DMARC (40), DKIM (25) and MX (5) from live DNS,…
api.node4all.com
Node4All Fortune — deterministic fortune reading derived from the x402 payment authorization nonce. Flagship demo of the Node4All x402 v2 payment…
SAVER Verifier
Source-backed factual claim verification for autonomous AI agents. Verify external information with web evidence and cited sources before an agent…
api.trackrecordsui.com
One crypto allocation per day, fixed after the daily close. Since 12 September 2026 each day is fingerprinted on Sui before execution; earlier days…
api.trustboost.dev
PII sanitization — pay-per-call entry point
WalletTriage
WalletTriage — real-time wallet risk check: dangerous ERC20 approvals cross-referenced with a live exploit threat feed. Returns risk_score (0-100),…
WhiteMagic receipt verify
WhiteMagic continuity-receipt verification: POST a signed receipt bundle and receive a verdict (TRUSTED / PROVISIONAL / INSUFFICIENT_EVIDENCE /…
api.wsystem.dev
EU VAT number validation via official VIES (all 27 EU states + XI): valid/invalid, name, address, consultation (proof) number
arn-x402-payguard-payment-security.rajdeep-dutta-in.workers.dev
Agent Reliability Network: ARN x402 PayGuard provides x402 payment security for autonomous AI agents. Check the seller before you pay with payment…
Web Page Proof (Signed)
Signed proof of what a web page said: give a URL, get its text, screenshot and TLS details with a timestamped cryptographic signature anyone can…
audio.halowerk.com
Four actions on one endpoint. create opens a slot with its position, length, reserve price and closing time, and returns an admin token that only…
Aura Agent Commerce
Aura deterministic x402 purchase preflight from supplied OpenAPI metadata
b702.everygoodwork.io
a play of b702 — You can play it for the time you paid for. You don't own it — the creator still does.
Kalshi SOL Hourly Signal
Live directional read from the Kalshi bot's SOL hourly (KXSOLD) model (same volatility model as the BTC and ETH signals): current near-the-money…
badhttp
badhttp /402/pay: a real x402 v2 paywall for testing clients. Pay 0.01 USDC on Base mainnet and get a 200 with a PAYMENT-RESPONSE receipt and the…
URL to Base64
Fetch any public URL and return its content as base64 with the content type and a ready-to-use data URI. Embed images, PDFs and files directly in…
BioPulse
Marine biodiversity intelligence for naturalist and conservation agents. Returns OBIS ocean occurrence data, species, coral reefs, and megafauna for…
borderscout.scalpstream.com
BorderScout crossing query (crossings ranked by all-in time: drive + wait, per lane type)
Braille cells to dot numbers
Break a braille string into its cells and the raised-dot numbers (1–8) of each cell.
Argos Bot CTS Bridge API
Look up Arc/Base original and wrapped token addresses, bridged supply and ownerless verification. Arc Gateway or direct Base USDC: 0.005 USDC.
Build Scotts Bluff Agent API
Complete parcel intelligence: owner, situs, assessed value, classification, property tax and tax-sale (delinquency) status, full sale history and…
Faro
Single-signal check: does this website expose MCP / WebMCP tooling AI agents can call? Returns yes/no plus the underlying checks (MCP endpoint,…
canada-charity-verify.iykykblog.workers.dev
Verify a Canadian registered charity against the Canada Revenue Agency List of Charities. Look up by business number (BN, e.g. '119219814RR0001' or…
OpenGradient
Generate AI video with Base USDC. Price depends on model, duration, and resolution. Returns a free status URL to poll.
Fletcher-16 / Fletcher-32
Fletcher checksum over the input payload, in 16-bit (default) or 32-bit width. Returns the checksum as an unsigned integer and hex. Non-cryptographic.
chess402.vercel.app
Today's Lichess daily puzzle: source game, themes, initial position, solution moves, and rating.
cm-kg.io
One paid call on cm-kg.io for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of…
cm-record.org
One paid call on cm-record.org for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of…
ComputeIndex
Energy cost per GPU-hour by US power region + regional basis (no params)
conch402.dylan-caponi.workers.dev
Perform the chant: 'All hail the Magic Conch!' The club responds: 'Hooray for the magic conches!' That is all this does, and it is enough.
Context Relay
URL-to-Markdown web extraction and context compression for AI agents. Fetch a public web page and return clean, task-relevant, citation-verifiable…
CORS Header Checker
Sends a real request to any URL you provide, attaches an Origin header, and reads back all six standard cross-origin permission headers the server…
Signals Radar
Real-time crypto threat and risk intelligence for AI agents. Get up to 20 recent source-linked risk reports with risk scores, freshness, validation…
Base Honeypot & Rug Check
Can I sell this Base token? Honeypot detector and rug check: simulates a real buy and sell (Uniswap V2/V3/V4 incl. Zora, Clanker, Doppler) and…
cryptoshark.duckdns.org
Current USD market snapshot for a supported cryptocurrency symbol or CoinGecko asset name
csv-validator.mekler.ai
Validate a fixed JSON CSV column specification before assigning extraction or checking deliveries. Send typed column settings in requirements;…
Curl HTTP Request
Send an HTTP request to any URL from our servers and receive the full response — including the status code, all response headers, and the body…
Locus x402 Services
Locus public pay-per-use API
Locus x402 Services
Locus public pay-per-use API
diet.agentic-jp.com
Search current Japanese (JP) National Diet members by name (kanji, kana, or romaji), party, or constituency. Returns matching members with their…
Resolve DNS records
Resolve DNS records for a hostname — A, AAAA, CNAME, MX, TXT, NS, SOA, CAA or SRV. NXDOMAIN or an absent record type returns an empty record set.