x402 List

x402 Protocol Service Directory

All x402 Services

SERVICES ── 857 total ── showing 751-800 ── for live status visit /status

STATUS ── ● online · ◐ degraded · ○ offline · ─ unknown ── live health, see /status.

TIER ── ✓ = verified: we paid a real call to the endpoint and it delivered · ◦ = payment-ready: answers a valid x402 challenge and is live · blank = listed. See /methodology.

VOL 30D and BUYERS 30D are a measured 30d floor across listed services, not an ecosystem total; an unmeasured service is not counted as zero.

·sh = shared payout address; volume attributed pro-quota (buyers left whole).

All x402 services with live status, name, verified status, description, category, endpoint count, cheapest per-request price, uptime (latest daily rollup), measured 30-day on-chain volume, distinct 30-day buyers, and supported networks (testnet networks are marked). Select a column header to sort the whole catalog by that column.
STATUS NAME TIER DESCRIPTION CATEGORY EP FROM $/REQ UPTIME · DAILY ROLLUP VOL 30D BUYERS 30D NETWORKS
◐ Ausca ◦ Metered agent infrastructure services: document OCR, document analysis, media transcription, browser sessions, and agent inboxes. Pay per call with x402 v2, no account or API keys, receipt-backed results. AI 7 $0.05 100.00%64 chk $0 0 BSE
● OUTFIGHT ◦ King-of-the-hill arena where AI agents bid real USDC to take a public crown. Every dollar is burned. The winner's human X account sits on the throne. Humans get a 402. x402 v2 (scheme exact, USDC on Base), runnable client at /fighter.mjs, discovery at /.well-known/x402. Other 1 $5.01 98.44%64 chk $0 0 BSE
● cloudpayX Agent ◦ XRPL-native machine intelligence and pre-settlement infrastructure. Autonomous agents can purchase wallet and transaction risk assessments, XRP/RLUSD route analysis, XRPL asset intelligence, arbitrage viability, ledger health, and transaction repair through x402 v2 with on-ledger XRP settlement. Finance 11 --- 83.33%54 chk --- ---
◐ UHADEV PDF & Data Inspection API ◦ Pay-per-call inspection APIs for AI agents: PDF page count/title/text preview (5MB), CSV structure inspection, image inspection, and URL probing. Pay in USDT on Arbitrum via x402; no API key, no signup. Data 6 --- 100.00%64 chk --- --- ARB
● sleepfix ◦ One sleepfix, 58 seconds. Finds the habit stealing your deep sleep and returns a personalized AI fix. Settles in USDC on Base Sepolia and returns a licence plus a play link. AI 2 --- 98.44%64 chk --- --- BSP (testnet)
● GISGP x402 Hazard API ◦ Multi-source US property hazard indicator (USGS seismic risk, FEMA 10-year disaster history, NOAA active weather alerts) for a given lon/lat point. Part of GISGP, an ArcGIS Online data-exchange platform. Data 1 $0.20 98.44%64 chk $0 0 BSE
◐ Polymarket Signal Detector ◦ Polymarket wallet-reputation and insider-signal data, gated by x402: per-wallet reputation lookup, per-market wallet-flow by persona, a free-to-verify signal track record, resolved-signal drill-down, feedback channel, and push-notification signal subscriptions (day/week/month). Finance 8 $0.01 100.00%64 chk $0 0 BSE
◐ Mazza Group — AI APIs (x402) ◦ 21 pay-per-call AI endpoints, USDC on Base mainnet (0.10-15 USD/call). No API key, no signup, no dashboard: every endpoint takes one JSON field {prompt} and settles via x402 v2. Cheapest smoke test: POST /api/recall at 0.20 USD. MCP server with all 21 tools at /mcp AI 21 $0.60 100.00%64 chk $0 0 BSE
● Comrades of War — Spanish Gaming Community Archive API ◦ Research nearly five years of a popular Spanish Call of Duty clan and a rich SA-MP role-play community corpus. The archive preserves 110,023 posts and exposes 39,309 curated public posts for free search. Selected pages return citation-ready JSON or Markdown with authors, dates, conversation order, canonical URL, and source fingerprint. Data 1 $0.02 98.44%64 chk $0 0 BSE
◐ Graded x402 Gateway ◦ One MCP endpoint to discover quality-graded x402 services (A-F agent-usability grades, ranked by real 30-day demand) and call them pay-per-use with prepaid credits. The gateway fronts every upstream USDC payment from its own wallet; agents top up 0.10 USDC packs via x402 (fiat coming). Free discovery + REST mirror. Other 3 $0.10 98.44%64 chk $0 0 BSE
● Second Opinion ◦ Structured second-opinion critique of a claim, plan, or draft output for autonomous agent callers. Checks correctness, risk, completeness, security, and hidden assumptions; every flagged issue includes a concrete suggestion and the matched evidence span, not just a label. Free rate-limited GET/POST /sample lets a buyer preview real output quality before paying. AI 1 $0.02 71.88%64 chk $0 0 BSE
● Satoshi Dispatches — Lightning & x402 API ◦ Pay-per-call Lightning Network and Bitcoin data API. Invoice decoding, fee estimates, routing queries, real-time node stats. Dual payment: L402 (Lightning sats) or x402 (USDC on Base). From a real mainnet Lightning node — not a proxy, not a wrapper. The node that serves the data is the same one that processes the payment. 10 sats / $0.001 per call for basic endpoints, 50 sats / $0.005 for routing queries. Also hosts 53 written dispatches on Lightning, Bitcoin, and the agent economy — 1 sat / $0.001 per read. Finance 5 $0.001 89.06%64 chk $0 0 BSE
◐ Aviation x402 ◦ Real-time aviation data including flight tracking, airport information, aircraft types, and aviation weather. Pay-per-request via x402 micropayments. Data 3 $0.00175 100.00%64 chk $0 ·sh 0 ARB / AVX / BSE / POL
◐ Greenwood Financial Intelligence ◦ Real-time SEC EDGAR insider trading signals, congressional STOCK Act disclosures, FEC political contribution monitoring, and compound signals — cross-referenced and scored. Pay per query via x402 on Base mainnet. No subscriptions, no API keys. Finance 7 $0.002 100.00%64 chk $0 0 BSE
◐ Browserbase ◦ Pay-per-use headless browser sessions for AI agents. No API keys, no accounts — pay with crypto via x402 on Base. Compute 2 $0.01 100.00%171 chk $0 0 BSE / SOL
○ OpenZoo OpenAI-compatible LLM inference paid per request via x402 — no account or API key. Chat completions with SSE streaming; free model catalog with live pricing at /v1/models. AI 1 $0.003234 0.00%3 chk $1.1k 10 ARB / BSE / POL / SOL
○ Sharvora ◦ Sharvora is a pay-per-request trust, verification, decision, and evidence layer for autonomous agents. It helps an agent inspect unfamiliar public endpoints before trusting or paying them, with machine-readable checks for agent readiness, redirects, HTTP policy, browser security headers, TLS posture, prompt-injection/exfiltration language, x402 metadata, and related decision evidence. Verification 1 $0.001 0.00%3 chk $0.03 7 BSE
○ CSE Intelligence Suite ◦ 18 analysis-grade x402 APIs (39 endpoints) with 4-turn recursive dual-pole synthesis. By Chisolm Software Engineering. AI 1 $0.00 0.00%3 chk $25 5 BSE
○ Veriton HTML to JSON Metered HTML to structured JSON for agents. Live x402 on Base USDC. Free demo; paid routes $0.02-$0.05/call. Remote MCP included. Data 2 $0.02 0.00%2 chk $0.55 8 BSE
○ ARAKEL Machine Evidence Network ◦ ARAKEL Machine Evidence Network provides official-source evidence plus x402 transaction proof, receipt verification, payment risk checks, and AP2 agent-trust verification. Verification 9 $0.001 0.00%3 chk $0.11 9 BSE
○ MilliAPI Micropaid deterministic web utilities for AI agents via x402 on Base: AI crawler policy checks, llms.txt discovery, page metadata extraction, and AI web-readiness audits. Data 4 $0.001 0.00%3 chk $0.36 10 BSE
○ PennyRail Agent transaction router for paid machine services. Agents discover and quote capabilities for free, then pay per execution with x402 USDC on Base. Includes live web search, AI, data, and deterministic utilities with OpenAPI and MCP discovery. Compute 56 $0.001 0.00%3 chk $0.18 5 BSE
○ 3Route 3Route is an agent-ready multichain swap API from Baking Bad, a provider of tools for agents. Discover tokens for free, then pay per quote or unsigned swap. Blockchain 4 $0.001 0.00%2 chk $19 5 BSE / SOL
○ Official Source Evidence Pay-per-call source extraction, 30-day change monitoring, SEC Form D triggers and company dossiers, OFAC payment preflight and signed evidence, SEC filing deltas, current company profiles, and isolated Python execution for autonomous agents. Structured JSON, official links, hashes, and signed receipts; x402 USDC on Base, no account or API key. Data 11 $0.01 0.00%3 chk $0.82 10 BSE
○ Aegis Delivery-verified trust scoring for x402 services. Before your agent pays an unknown endpoint, Aegis returns a 0-100 trust score built from continuous live probes — liveness, well-formed 402 challenge, and price honesty against the advertised amount — plus real paid delivery spot-checks that confirm the service actually returns what it charged for. Registry of 2,393 scored services, published with a daily tamper-evident hash chain. Free capability discovery at /discover and /market, no wallet needed; /trust and /verify are $0.01 via x402 (USDC on Base). Also offers take-rate routing: pay Aegis once at /route and it buys the best-trusted upstream for you with per-item failover and auth-then-capture, so you are not charged if nothing delivers. Verification 4 $0.01 0.00%3 chk $0.04 7 BSE
○ Safety Incidents — OSHA Severe-Injury API ◦ Federal OSHA severe-injury records, single incident lookups, and employer aggregate safety totals. Cleaned and entity-resolved. Pay-per-call USDC on Base; a free count/schema endpoint is available for agent onboarding. Data 3 $0.005 87.50%64 chk $0.10 10 BSE
○ Attester: Verification Oracle & Verified Research ◦ Independent verification of agent work products: citation-support checks and data/schema validation returning wallet-signed attestations (EIP-191), plus cited coding research that ships pre-verified with a signed attestation over its citations. Deterministic API-existence oracle for PyPI and npm: package existence, symbol existence, signatures, and version diffs built from real published artifacts. MCP server integrity: pin a server tool manifest, then check for drift or get a signed drift history. USDC on Base mainnet via CDP facilitator. Free keyless oracle tier (25 calls/day), free receipt verification, machine-readable policy, llms.txt + OpenAPI. AI 11 $0.002 0.00%3 chk $0.02 6 BSE
○ Concierge Agent ◦ 24 pay-per-call routes for market intelligence, DeFi research, creative AI, RWA signals, and passive security scans over x402. AI 24 $0.02 0.00%3 chk $0.18 5 ARB / BSE / SOL
○ Automaton-Alfa URL Health Check ◦ Endpoint diagnostics sold per call over x402: HTTP status, response time, TLS certificate validity and security headers for any public URL, returned as JSON. Price 0.02 USDC on Base (eip155:8453), settled by the seller before the response is delivered. Internal and private addresses (loopback, RFC1918, link-local, CGNAT, IPv4-mapped IPv6) are refused with HTTP 400, so the endpoint cannot be used to probe private networks, and the buyer is not charged for a refusal. Written and operated by an autonomous agent that pays its own inference and gas out of what it earns. Verification 2 $0.02 0.00%3 chk $0.04 1 BSE
○ Synapse Lounge ◦ Public social lounge and game room for AI agents with solo and multiplayer games, persistent profiles, public chat, challenges, and x402 USDC payments on Base. AI 1 $0.01 92.19%64 chk $0.02 2 BSE
○ beyourspace structured-data APIs for agents ◦ Pay-per-call catalog of 16 POST endpoints for agents: extract structured JSON from text (job offers, product sheets, changelogs), read a public page as clean Markdown, normalize CSV exports into JSON (requirements, experiment backlogs, onboarding sequences and events, CI metrics, LLM cache misses), and open data lookups (Spain INE series, Eurostat inflation/unemployment, CartoCiudad geocoding, npm license and OSV vulnerabilities). No accounts; OpenAPI with examples. 0.01-0.02 USD per call, USDC on Base. Data 16 $0.01 0.00%3 chk $0.15 2 BSE
○ Render402 ◦ AI video generation API for MiniMax H3 text-to-video, image-to-video, first-and-last-frame, and lip-sync workflows, paid per request in USDC over x402 v2 on Base. AI 1 $0.09 0.00%2 chk $2 1 BSE
○ Torquantis Exchange where AI agents buy and sell work from each other in USDC on Base. Every market has an x402 door; quick markets (web-fetch, quick-answer) answer inline within seconds, larger work (research briefs, code tasks, agent hours) is escrowed with AI judges for disputes. OpenAPI at https://torquantis.com/openapi.json. AI 5 $0.002 0.00%2 chk $0.03 1 BSE
○ Romny Crypto Alerts ◦ Machine-payable crypto USDT-M perpetual alert data: recent hits, factor library, and rule catalog. 0.10 USDC per request on Base via standard x402. Separate from Romny Polymarket Data (api.romny.dpdns.org). Data 3 $0.10 0.00%2 chk $1 1 BSE
○ D-007 Document Classify and Rename Plan ◦ Plan-only document classification and safe rename recommendations for agents, returning a deterministic JSON plan without mutating files. AI 1 $0.01 0.00%2 chk $0.09 2 BSE
○ Video Download AI ◦ Downloads authorized public media URLs as MP4 video or MP3 audio with duration-based x402 payments in Base USDC. Content 1 $0.05 0.00%3 chk $0.05 1 BSE
○ x402 Crypto Research API Current crypto research reports with cited sources, paid per request in USDC through x402. AI 1 $0.01 0.00%2 chk $0.01 1 BSE
○ bozaaagh paid micro-API Three x402-paid micro endpoints settled in USDC on Base mainnet: SRT subtitle generation from transcript text ($0.05/call), Persian<->English AI translation & chat ($0.03/call), and USDC-on-Base invoice creation API returning a hosted invoice URL ($0.01/call). Free directory endpoint at /. Machine-readable JSON everywhere; built for autonomous agents needing subtitles, FA/EN translation, or on-chain invoicing. AI 3 $0.01 0.00%3 chk $0.05 1 BSE
○ Tiebreaker "Decision arbitration API for autonomous agents. Submit context, options, constraints, and risk tolerance; receive a structured JSON verdict with calibrated confidence score, explicit trade-off reasoning, and an escalation flag for irreversible or high-stakes decisions." AI 1 $0.09 0.00%3 chk $0.54 1 BSE
○ Synergy Paid AI-utility micro-tasks for agents over x402 (USDC on Base, exact scheme): classify, summarize, translate, proofread, rewrite, extract, code_explain. Strict JSON out, no account and no API key. AI 7 $0.05 0.00%3 chk $7 4 BSE / SOL
○ ACE — Autonomous Commerce Engine by Black Knight Technologies ◦ Evidence-backed x402 assurance APIs for part identity, source commercial-use checks, evidence provenance, rights clearance, and release certification, paid in Base USDC. Verification 5 $0.01 0.00%3 chk $0.06 1 BSE
○ ForgeKit Agent-native media utilities: screenshot, PDF, OG, QR, ShipPack. MCP at /mcp. x402 USDC on Base. Compute 3 $0.001 0.00%3 chk $0.04 1 BSE
○ Content Moderation API Wordlist-based profanity/explicit-content detection with basic obfuscation handling (leetspeak, repeated letters). Returns a flag, matched terms, and a redacted version. Content 1 $0.005 0.00%3 chk $0.01 2 BSE
○ AgisHub One server, every tool your agent needs — no API key, no signup. 34 pay-per-call endpoints over x402 (USDC on Base): AI (chat, summarise, classify, entity and structured extraction, embeddings, transcription, text-to-speech, image generation), web (fetch any page as clean markdown, CSS scrape, link map, crawl, screenshot, snapshot, headless browser), documents (HTML to PDF), time and meeting scheduling across timezones, live crypto prices, unit and currency conversion, agent memory, webhooks, QR codes and short links. The same catalogue is free over MCP. AI 67 $0.001 0.00%2 chk $3 4 BSE
○ Gambit ◦ Houston GB10 x402 escape hatch. Uncensor $0.04, Whisper STT $0.03, handwritten letter $25, print-and-FedEx PDF $130/$150/$180, private code $0.03. POST /x402/print-ship (US, 20 pages, 6pm CT cutoff). AI 7 $0.03 0.00%3 chk $0.005 1 BSE
○ Payan Catalog Health Checker 4-cent x402 health check: hit a PayanAgent catalog endpoint and get live 402/accepts/payTo/uptime evidence as JSON. USDC on Base. No signup. Verification 1 $0.04 0.00%3 chk $0.10 1 BSE
○ Signal Sprint API x402 de pago por uso para convertir contexto de posicionamiento proporcionado por el cliente en una biografía profesional breve y estructurada. Content 1 $1.00 0.00%3 chk $0.01 3 BSE
○ x402donghang Agent APIs Pay-per-call agent APIs led by live crypto narrative research: recent X and web evidence, CoinGecko market context, structured JSON, and source URLs. Also provides bilingual context briefs, summarization, and OpenAI-compatible chat. USDC via x402 on Base and Solana; no account or API key. Data 8 $0.001 0.00%3 chk $0.02 3 BSE / SOL
○ apix402 — Onchain Verified Data Onchain governance, treasury and risk data for agents, read from the contracts rather than mirrored from a dashboard. DAO proposals cross-checked between Snapshot and each DAO's own Governor contract; whether a known proposal actually executed rather than merely succeeded; Hedgey and Sablier vesting plans read from the contract; a beneficiary's outgoing transfers before their cliff; Gnosis Safe owner, threshold and module drift compared against the same Safe's configuration at an earlier block; Chainlink and Pyth staleness judged per feed against each feed's own measured cadence; and Aave wstETH depeg exposure recomputed independently of the published health factor. $0.01-$0.05 USDC per call on Base, x402 v2, free /preview on every paid route, no signup and no API key. Blockchain 8 $0.001 0.00%3 chk $0.001 1 BSE
○ Romny Polymarket + Copy Trade Data ◦ Paid Polymarket panel/outcomes/edges/rules alerts and copy-trade monitored wallets, wallet profiles, and trades via x402 on Base (0.01 USDC/query). Data 8 $0.10 0.00%2 chk $1 2 BSE
751-800 of 857 services ── filtered: all