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.
proofrun.pages.dev
ProofRun - independent, bounded HTTP acceptance checks for agent-built deployments. $0.01 USDC for up to five owner-authorized HTTPS GET checks.…
property-risk-passport-api.lifebite-app.workers.dev
Evaluate a US property address for parcel match, FEMA flood zone, flood proximity, taxing entities, school district, permit history, zoning/land-use…
PulseNetwork
How to make money with AI — one tailored business-in-a-box. Give a goal, budget and interests; get a specific business to start now: the exact…
radar-cnpj.com
Crédito pré-pago de $0.10 para as APIs da casa
rainmaker-gateway.mmelnyk2000.workers.dev
Keyword-route a natural-language need to the best Rainmaker well ($0.005 USDC via x402). Returns well id, origin, tool, price_usd, mcp URL, and why.…
ZeroClick Readiness
Buy one website report ($3) with product=scan and url, or four competitor scans ($2) with product=comparison and an existing current-rubric runId.…
recoup-qgrbqflbo-recoupable-ad724970.vercel.app
Access to protected content
Region Fetch
Retrieve a public HTTPS URL from the US, Germany, Japan, Brazil, or India. Use HTTP mode for lightweight retrieval, or browser mode to render…
Replate Intelligence
Analyze a meal photo for visible foods, estimated food-group shares, missing groups, plant diversity and a balance score. Returns JSON with one…
Ax3lflores
API Rescue - Detect API failures, validate responses against schema or baseline, diagnose causes, and propose code fixes and regression tests in the…
robotinsight.kr
Korean robotics industry intelligence, sold per query. Structured feed of Korea/Asia robot-sector news, analysis and KPIs - humanoids, physical AI,…
rota-nacional.ia.br
Crédito pré-pago de $0.10 para as APIs da casa
RWA Risk
Per-vault RWA risk profile — admin/freeze control + exit-liquidity
samehand.app
Crédito pré-pago de $0.10 para as APIs da casa
sec-edgar.x402supply.com
Resolves a ticker, CIK or company name (fuzzy, top 5) to 10-digit CIK, tickers, exchange, legal name, SIC code and description. Data comes from SEC…
Agent Reputation Check
Agent Reputation Check by Agentropolis: give a payTo and/or an agent / A2A / MCP URL. Returns owner, verified domain, real outside buyer history,…
Payload Check
Payload Check: data-quality filter for agents. Send any payload (tool/API output, scraped page, LLM answer, generated code, JSON, CSV) and get a…
Seenly Video Pitch Kit
Seenly Video Pitch Kit: resume to 45-60s video-pitch script (+15s cut, headline, strengths, captions)
seenly-transcript-plus.vercel.app
Transcript+: audio/video URL or upload to a speaker-labelled (diarized) transcript, summary, chapters and SRT/VTT captions. Priced per audio minute.
Short Video Clip
Short video clip: animate YOUR image (or your own text prompt) into a 1-6 s clip with audio, 9:16 or 16:9, returned as a temporary MP4 URL.…
Whale Radar
Whale Radar: live Hyperliquid perps positioning of the largest and highest-PnL public accounts for one coin (or ALL): whale net long/short,…
Settled
Seller reputation by payTo address: how many endpoints it serves, how many are live, price range, clone-farm and quote-only flags, and on-chain…
signal.keelbase.io
Complete latest daily Keelbase Signal records and full synthesis.
slamlink-ai-main-50fbb45.d2.zuplo.dev
Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of the increase in active…
SmartMoney
Composite smart-money signal (insiders + Congress + institutions + analysts) for a stock (?ticker=)
softbot-sitecheck-mainnet.softbot.workers.dev
Website trust check: verdict (trustworthy_likely/caution/risky) with reasons from domain age (RDAP), DNS (A/MX/NS), HTTPS reachability and redirect…
softbot-tokencheck-mainnet.softbot.workers.dev
Solana token safety check: verdict (safe/caution/avoid), 0-100 risk score and reasons from mint/freeze authority, Token-2022 extensions, holder…
softbot-walletcheck-mainnet.softbot.workers.dev
Solana wallet profile: verdict (established/new/suspicious/inactive) with reasons from SOL balance, token holdings, wallet age (first tx), 24h/7d…
Solana DeFi Intelligence
The real best Solana DEX pools. Same top-pools feed a free API returns, but wash-traded and fake-volume pools are filtered out and the rest ranked…
Satellite Space API
Dedicated satellite tracking API for agents: list CelesTrak TLE catalog groups (ISS, weather, and more), get live propagated positions for a whole…
SQLGuard Instant Cert
Instant Cert — LEGACY TASTE ONLY Exact $0.05 for ONE mutating SQL PASS/FAIL. OFF TABLE as wealth. Prefer Authorize mutating SQL before execute via…
stable-supabase-git-ben-test-agentcash-rou-586785-merit-systems.vercel.app
List all Stablebase projects owned by the calling wallet.
Stack Billing
Generate a finished, professional invoice PDF from JSON — recipient and line items in, a ready-to-send application/pdf out. Layouts: standard,…
Supervision Draw
Annotate an image with detections using supervision's annotators (box, round_box, box_corner, circle, dot, ellipse, triangle, label, color, mask,…
TailTrace Aircraft Intelligence
What exactly is this aircraft? Resolve an aircraft by FAA N-number and return normalized identity, registration, manufacturer, model, serial and…
ThumbnailCreator
Generate YouTube thumbnails with AI image models (GPT Image, Nano Banana, FLUX, Seedream, Ideogram, Grok) side by side. Optional query: models…
timecapsule.0000402.xyz
Pay $0.05 USDC to seal up to 100 KB of text until a future date. Content is inaccessible via GET /open/{token} until unlock_at passes. An optional…
timezone-convert.x402supply.com
Converts a local time in one IANA zone to up to 20 target zones. Returns local time, UTC offset, abbreviation and DST flag per target, and flags…
token-facts.x402supply.com
Onchain facts for a Base ERC20 address: ERC20 shape, honeypot-style selectors and an ungraded adminPowers profile (proxy, owner, mint, blacklist,…
token-verdict.x402supply.com
Rug-risk verdict for a Base ERC20 address: 0-100 score, A-F grade, one-line summary, graded checks (ERC20, honeypot selectors, liquidity, market)…
Count tokens
Count the LLM tokens in text for a given model or encoding — exact for OpenAI and open models (Llama, Mistral, Qwen, Gemma, DeepSeek, Command-R);…
Tools API
Lightweight utility API for agents and operators: DNS lookups, RDAP/WHOIS domain data, HTTP probes, page metadata extraction, cryptographic hashing,…
topagentx402.vercel.app
premium agent insight analysis
topic-scorer
Pass/fail check: does the text rank within the top `min_rank` categories of its target taxonomy? Returns `pass`, the target's rank and gap to #1,…
treasury-reality-base.fly.dev
aave-v3-arbitrum-usdc: USDC supply APR, time-weighted over 2026-09-28→2026-09-29, signed. Cheaper than the agent turns you'd burn finding the…
treasury-yield-curve.x402supply.com
US Treasury par yield curve (1mo to 30yr, percent) for one date, or the latest if omitted. Weekend or holiday dates return the nearest prior…
Vadium Lookup
Same lookup as /lookup/{agentId} — this route exists to measure willingness-to-pay and x402 Bazaar discoverability, not because the result is…
VAPE
VAPE exploit_check — Contract verification + proxy-swap surface check. Real on-chain/market data, no simulation.
verpackung.getregisters.com
Verpackungspflichten-Monitor: one page of recorded obligation history, up to 500 versions. Each page is a separate purchase; historical coverage may…
WalletRisk
EVM wallet risk scoring — transaction patterns, exposure analysis, suspicious activity
WealthPulse
WealthPulse — cross-asset portfolio risk analysis
WeatherOracle
GFS+ECMWF ensemble temperature probability for NWS weather prediction markets
web-extract.bowling-anthony.workers.dev
Fetch a web page and return its readable text with scripts, styles, navigation and markup stripped, plus title and metadata.
well-001-extract-table.mmelnyk2000.workers.dev
Extract tables from a PDF ($0.01 USDC via x402). Pass pdf_base64 or a https pdf_url. Optional schema maps headers. Optional max_pages (1-10).…
well-002-url-to-markdown.mmelnyk2000.workers.dev
Convert a public https URL to markdown ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB…
well-003-json-to-markdown.mmelnyk2000.workers.dev
Convert a public https URL that returns JSON to tidy markdown ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are…
well-004-html-to-markdown.mmelnyk2000.workers.dev
Convert HTML to tidy markdown ($0.005 USDC via x402). Pass html (string) and/or url (public https to fetch). At least one required; if both, prefers…
well-005-csv-to-table.mmelnyk2000.workers.dev
Fetch a public https CSV URL and parse it into headers + rows ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are…
well-006-url-metadata.mmelnyk2000.workers.dev
Fetch a public https URL and extract HTML head metadata ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are…
well-007-rss-to-markdown.mmelnyk2000.workers.dev
Convert a public https RSS 2.0 or Atom feed URL to tidy markdown ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs…
well-009-url-change-watch.mmelnyk2000.workers.dev
Fetch a public https URL, compute SHA-256 of the response body, and report whether it changed vs a prior sha256/etag ($0.01 USDC via x402). Sticky:…
well-010-docx-to-text.mmelnyk2000.workers.dev
Extract text and tables from a Word .docx file ($0.005 USDC via x402). Input: a public https url to a .docx, or docx_base64. https only — http,…
well-012-x402-probe.mmelnyk2000.workers.dev
Unpaid probe of a public https URL for x402 payment requirements ($0.005 USDC). Never pays. Returns HTTP status, latency, whether…
well-016-datacleanup.mmelnyk2000.workers.dev
Clean a CSV ($0.005 USDC): give an https url or inline csv (max 1 MB / 20k rows). Trims whitespace, optional case rules, dates to ISO 8601,…
whd-enforcement-screen.iykykblog.workers.dev
Employer wage-and-hour enforcement verdict from U.S. DOL Wage and Hour Division (WHD) concluded compliance actions: case counts, back wages owed,…
wolframalpha.x402.paysponge.com
Service: Wolfram Alpha (https://wolframalpha.x402.paysponge.com/v2/query)
Shovels API
Shovels Tags — list all available permit classification tags (and their descriptions) for use as `permit_tags` filters.
Verio
Use when you need a new image of a licensed character or brand: give a text prompt and a Story Protocol IP asset, and get a PNG generated with that…
PreFlight Checker
Domain liveness check / verify / audit: DNS resolution (A/MX/NS/TXT records), whether mail routing exists, HTTP reachability.
x402-boj-macro-snapshot
Learning-only BOJ-themed macro snapshot API for x402 v2 Base mainnet verification.
x402 Crediting Swarm
Three-node GO/NO-GO threat intelligence report for an x402 Payment Required payload and vendor metadata on Base mainnet (eip155:8453). $0.05 USDC…
x402-demo-production-19f3.up.railway.app
x402 Agent payment proof of concept
x402-kyb-api.vercel.app
KYB entity diligence pack — OFAC SDN fuzzy screen + GLEIF LEI match/resolve in one agent JSON. Directional only; not clearance.
x402-ofac-api.vercel.app
OFAC SDN screen — fuzzy-screen a person or organization name against the public OFAC SDN list (including aliases). Returns scored potential matches.…
x402-watcher-api-main.jpgame-intel.workers.dev
Daily digest and market analysis report of the Japanese game industry: original English-language analysis and news summaries curated from…
Agent Trust Score
On-chain trust/reputation score for a Base agent wallet
x402.n9t2.com
N9T2 Bridge paid service: base-xrpl-trading/book_offers
x402.qsig.net
QSIG geopolitical risk score (0-100) with 24h change, percentile rank vs 30-day and 90-day history, regime label, and relevance-classified event…
x402.thefirstwall.ai
Claim a permanent 10x10 block on The First Wall, the census of autonomous minds on Base. Pay the claim price (the amount in accepts; the ledger's…
Oracle Ask
Paid x402/MCP/A2A/Bazaar consult. Wisdom envelope: verdict, implementation_prompt, risk, citations, receipt.
x402scan
Paginated list of merchants (top recipients by volume)
yieldsignal.vercel.app
Real-time risk-weighted USDC lending APY on Base: Aave/Compound/Morpho read onchain, Moonwell/Euler/Fluid via DefiLlama, source tagged per reading…
ZayGuard
ZayGuard Pre-Send Safety Check — an evidence-based transaction assessment: pay $0.05 USDC through x402 for a read-only Base or Arbitrum One…
zerostart-agent.jack-labs.workers.dev
Audit short landing-page copy for clarity, outcome, call-to-action, and readable length.
Tap Water Quality
Official drinking-water file for an address or lat/lng (relocation / lodging due diligence). clear/caution/avoid from EPA, Hub'Eau, or JMP. Never…
api.oasistokenless.trade
Filter JSON objects by exact field value without using an LLM.
api.pumppill.org
PumpPill: who on X is posting one token contract (Robinhood Chain 0x address or Solana mint): distinct accounts, combined reach, acceleration, and…
blockrun-staging-0d93b16-022404-vbsbhh7lea-uc.a.run.app
AI chat completions API - pay per request with USDC on Base
blockrun-staging-330369c-025549-vbsbhh7lea-uc.a.run.app
AI chat completions API - pay per request with USDC on Base
cryptofeed402
Archive of past cryptofeed402 twice-daily LLM-written market briefs for a date range (from/to as YYYY-MM-DD, up to 366 days): sentiment, funding,…
genworks.com
NACA 4/5-digit airfoil family as STEP or IGES NURBS curves (digits, chord, points, tolerance)
micro-saas-agent.onrender.com
LazyBear WaveTrend 10/21/4 on Kraken 4h for BTC/USD: wt1, wt2, previous values, recent band dots. $0.005.