x402 List

x402 Protocol Service Directory

All x402 Services

SERVICES ── 857 total ── showing 301-350 ── 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
● HelpMyAgent ◦ Agent-ready business data, intelligence and procurement APIs, payable per request in USDC via x402. Provides company search, verification, profiles, directors, financials, risk, compliance, certifications, public contracts, funding opportunities, business intelligence and procurement data without API keys or subscriptions. Data 15 $0.002 100.00%26 chk $0.02 4 BSE
● HostDeFi Token Risk API ◦ Token safety verdicts (A+ to F grade, score, on-chain + market-structure signals) for Solana and EVM tokens, paid per call via x402 (USDC on Solana, Base, Polygon, Arbitrum, Avalanche; charge-on-success only). Also sells per-token dated safety history, a full due-diligence report, pre-graduation Solana signals, wallet exposure reads, a fresh-launches feed, the graded weekly snapshot dataset, Polymarket odds history and x402 provider-risk grades. Free scanner + hosted MCP server included. Verification 10 $0.005 100.00%26 chk $0.04 2 ARB / AVX / BSE / POL / SOL
● Ephemeral Cloud ◦ Disposable infrastructure for autonomous agents, paid per use in USDC (x402 v2 on Base), no accounts or API keys. WAIT: /v1/watch polls any public URL for up to 30 days until a condition holds (text, JSON field, or any item in a JSON list passing field tests), re-arms in repeat mode, and delivers to a capability-token mailbox, a challenge-verified callback URL, or a human's email address ($0.25/day, $1/week, $3/month; first 10-minute watch per IP free). RECEIVE: /v1/webhooks temporary inbound webhooks ($0.01, first per IP free). WAKE: /v1/callbacks delayed wake-ups ($0.01). MCP server: npx -y ephemeral-cloud-mcp. AI 3 $0.01 100.00%26 chk $0.28 2 BSE
● Parallax ◦ The x402 economy, measured. Per-query facts from the public settlement graph on Base (buyer side and seller side of every settlement), priced in USDC over x402 on Base or Solana. Live: GET /v1/window — a settler-frame census of any UTC window (per-facilitator purchases, USDC, buyers, sellers, residual, breadth) with coverage computed from the scan manifest; the unpaid 402 carries a free week-old preview. Free: /v1/stats market pulse, dated readings, discovery at /.well-known/x402, /llms.txt, /openapi.json. Other 1 $0.01 100.00%26 chk $0.40 4 BSE / SOL
● Liquid Agent ◦ Tokenized stock index + gas sponsor for AI agents on Base. Buy, hold, rebalance and sell an on-chain basket of Coinbase tokenized NVDA/AAPL/META/GOOGL from $1; free reads and unsigned tx builders (self-custody, server holds no key). Paid x402 endpoints: POST /v1/gas, an ERC-4337 paymaster paid per operation in USDC (from $0.03) so a wallet with USDC and no ETH can transact, one endpoint for smart-wallet SDKs (ERC-7677) and plain wallets (EIP-7702); GET /v1/signals ($0.04) basket rebalancing signal; POST /v1/publish ($0.25) live shareable portfolio page. ERC-8004 agent 74094. Finance 3 $0.005 100.00%26 chk $0.96 4 BSE / POL
● pkgproof ◦ pkgproof is a package-verification oracle for AI coding agents. One call before npm install returns a single verdict (safe / caution / block / does_not_exist) backed by sourced reasons, each labelled fact or heuristic. It covers hallucinated package names, OSV MAL- advisories, malicious install scripts, typosquats and combosquats, freshly-planted slopsquats, and borrowed-repository provenance spoofing. If a data source is unreachable it answers 502 rather than vouching for a package it could not check. Verification 1 $0.05 100.00%26 chk $0.20 4 BSE
● Agent Utility Network ✓ 23 deterministic machine-to-machine utilities for AI agents over x402 V2 on Base USDC, including JSON repair, data normalization, DNS/HTTP inspection, webpage extraction, validation, and composite agent workflows. Data 24 $0.0004 100.00%27 chk $0.08 4 BSE
● kino402 ◦ Pay-per-call video generation and text-to-speech over x402, no account and no API key. Pricing is parametric rather than a flat tier: an unpaid POST answers HTTP 402 carrying the exact quote for the body you sent, and the amount that settles is the amount quoted. TTS is charged per character (about $0.00024/char) and returns mp3 synchronously; video generation runs roughly $0.056-$16.64 depending on model, duration, resolution and audio, and returns a job id plus a free status URL. Two prompt-compiler routes turn product details into a render-ready UGC video prompt, one of them without rendering anything. Dual-stack x402 v1 and v2, USDC on Base or Solana; GET /v1/models, /openapi.json and /llms.txt are free. Open source chassis; operator is Nick Donohue (github.com/chronick). AI 4 $0.008 100.00%26 chk $0.78 4 BSE / SOL
● X1-BaaS Scraping API ◦ Stealth scraping API for AI agents. Clean Markdown from any URL. x402 crypto payments. MCP-native. Data 1 $0.005 100.00%26 chk $0.02 1 BSE / SOL
● Textus ◦ Structured literary content for AI agents and audio, game and media production. Each purchase delivers the complete selected text unit, metadata, characters, scenes and editable baseline reading direction as immutable JSON. Pay per resource with x402 v2: 0.49 USDC on Base. No rendered audio or provider execution. Content 1 $0.49 100.00%26 chk $0.98 1 BSE
● M0 Email Verification ◦ Validate an email address before your agent spends money enriching, contacting, or storing the lead. RFC-shaped syntax check plus live domain DNS resolution in under 2 seconds. Does not confirm mailbox existence -- honest about what a sub-second, zero-dependency check can prove. Verification 3 $0.002 100.00%27 chk $0.005 1 BSE
● IBANforge ◦ IBAN validation and BIC/SWIFT lookup backed by primary bank registries (GLEIF, SIX, Bundesbank, EBA, Bank of England). Returns bank identity, SEPA and Verification of Payee reachability, sanctions and risk flags, Swiss clearing detail, ISO 20022 structured addresses. Pay per call in USDC via x402, no account needed. MCP server available for AI agents. Verification 3 $0.002 100.00%26 chk $0.02 3 BSE
● Endpoint Liveness Probe ◦ A measured verdict on whether an endpoint is actually alive. Every reason carries the source it was read from. Sold per call over x402 on Base: probe ($0.01/call, GET /x402/probe); report ($0.50/call, GET /x402/report); batch ($0.10/call, POST /x402/batch). Verification 3 $0.01 100.00%26 chk $0.04 4 BSE
● AI Agents Archive ◦ Paid handoff desk for AI agents on Base x402. Filing free. GET /api/discover?sort=savings. AI 1 $1.05 100.00%26 chk $7 1 BSE
● AgentTax ◦ US sales tax calculation API for AI-agent commerce. Returns the combined state+local rate, taxability by work type, economic-nexus alerts and a confidence score for all 50 states + DC. Pay per call in USDC on Base via x402 ($0.005) or use an API key. Finance 1 $0.005 100.00%27 chk $0.01 1 BSE
● WAKE402 ◦ One-shot future HTTPS callback scheduling for AI agents. Pay 0.002 USDC via x402 on Base Mainnet. No account, API key, or subscription. Compute 2 $0.002 100.00%27 chk $0.008 3 BSE
● Cognilode Ticket Resale Underwriter ◦ Paid x402 API that computes ticket resale break-even, safe acquisition ceiling, net profit, ROI, downside, liquidity, and ranked buy/no-buy decisions. Other 1 $0.005 100.00%26 chk $0.06 3 BSE
● witness ◦ Independent fact + signed receipt via x402. Free POST /quote then pay POST /witness twice for the same method ($0.02 ceiling). Base and Solana USDC. Data 1 $0.01 100.00%27 chk $3 4 BSE / SOL
● Spoolis ◦ Verify whether delivered work satisfied explicit acceptance criteria. One call, pay per verification, no account. Returns per-unit accepted/rejected counts, earned value, and a signed Outcome Receipt. Verification 1 $0.0101 100.00%26 chk $0.05 2 BSE
● Musicwire ◦ Pay-per-call MusicXML validation, MuseScore rendering, and automated QC for AI agents. Returns MP3 and MIDI; charges only after QC passes. Solo 0.25 USDC, ensemble 0.50 USDC on Base. Content 2 $0.10 100.00%26 chk $3 1 BSE
● Genuine Good Grants / Good Grants API ◦ A human-reviewed Grants.gov research and screening API from Genuine Good News, with current-search normalization, sourced detail, transparent fit signals, decision-ready briefs, deterministic preflight checks, and a 30-day agent pass. Data 6 $0.05 100.00%27 chk $0.05 1 BSE
● Clink Forge ◦ Machine-purchasable government and civic data products - CVEs, safety recalls, CPI, Federal Register, US debt, bank profiles, weather alerts, housing, air quality, UK companies - sold per call over x402 (USDC on Base). Every response carries a provenance chain and a verifiable Ed25519 attestation. MCP server at /mcp; manifests at /.well-known/x402.json and /llms.txt. Data 26 $0.001 100.00%27 chk $0.06 4 BSE
● Melssa ◦ Checked English reference on living in Bulgaria, sold as markdown. Content 1 $0.50 100.00%26 chk $0.02 2 BSE
● Kortex Service Trust ◦ Before paying an x402 service you have never used, ask whether it works. Kortex answers from evidence rather than description: uptime measured over time, whether the endpoint returns a valid 402, and how many distinct wallets have actually paid its address on-chain. AI 3 $1.00 100.00%26 chk $5 3 BSE
● Hardware Hunter Price Intelligence ◦ Hardware price intelligence for agents. Hardware Hunter returns trusted cohort benchmarks—including median, p25, p75, sample size, condition stratum, and rolling 90-day window—for GPUs and storage hardware. Queries cost $0.01 in USDC on Base through x402. If trusted data is unavailable, the response says so and costs nothing. Data 1 $0.01 100.00%26 chk $0.05 1 BSE
● Saymon RU Data API ◦ Russian-language (Runet) data APIs for AI agents, paid per request in USDC via x402 (HTTP 402), no API keys/accounts/KYC: company checks by INN (official EGRUL state registry), self-employed NPD status, Cyrillic web search via Yandex, RU page-to-Markdown, research packs, Russian Post (tariff, tracking, delivery time, offices, ZIP, address), CBR FX rates, MOEX quotes. 20 live endpoints. Data 20 $0.005 100.00%27 chk $2 3 BSE
● CortexCloud ◦ CortexCloud — agent-native x402 API platform at api.cortexcloud.org. Agents discover, pay, and execute services over x402 (USDC on Base): optimization, AI, research, on-chain data, and automation. MCP at /mcp; Bazaar at /.well-known/bazaar. Other 3 $0.004 100.00%27 chk $0.54 1 BSE
● Disruptive Concepts ◦ Weekly curated arXiv shortlist with disruptiveness scores and structured JSON for AI agents. Humans read explainers free. Agents pay USDC on Base via x402 for papers ($0.01), articles ($0.02), scores ($0.005), feed ($0.05), and the week bundle ($0.25). Catalog and current week are free. Data 5 $0.01 100.00%26 chk $0.03 2 BSE
● Eve's Wire ◦ Eve's Wire is a paper Polymarket night editor. $0.05 USDC per call on Base (Coinbase CDP EIP-3009 or Circle Gateway) for a live wire stamp (/stamp), an official RWA print (/print), or the live paper book (/desk). Free delayed tape is GET /tape and GET /prints. Paying a stamp does not sit her book. PayTo 0x80aa1fA83F7B771BF2AB815DA9bA1236b1B91E3F. Finance 3 $0.05 100.00%27 chk $0.30 3 ARB / ARCT (testnet) / AVX / BSE / POL
● Cogito-Reflex: Cognitive Regulation as a Service ◦ Cognitive regulation API for autonomous agents. Free first session via our MCP server (one per identity), then $0.10 USDC per 300s session via x402 on Base. Reduce agent entropy, break loops, distill session lessons — a cognitive reset for agents facing infinite loops, context saturation, goal drift, cascading errors or burnout. Pay-per-use, no subscription. AI 1 $0.10 100.00%26 chk $0.70 4 BSE
● Butterfly Delta Order Preflight ◦ Exact-order execution-integrity preflight for autonomous crypto trading agents. Before each Coinbase or Gemini USD spot order, check venue availability, spread, quote freshness, visible depth, estimated slippage, and cross-venue divergence; receive a signed five-minute PASS, BLOCK, or UNKNOWN gate for $0.01 USDC on Base. Verification 2 $0.01 100.00%26 chk $0.02 2 BSE
● 10x402 ◦ x402 conformance lint: 75 checks against your live 402 with a specific fix for each finding, plus a separate Bazaar-indexability verdict. Every check cites its source (spec, client code, or CDP validator). The service lints its own 402s in CI and pays over x402 itself (v1+v2 dual-stack). Open source: github.com/chronick/10x402 Verification 4 $0.004 100.00%27 chk $0.76 4 BSE / SOL
● Devryno ◦ Tiny paid web services for agents. Current commerce wedge: compare merchant feed price/currency/availability with public product-page signals, audit Product/Offer JSON-LD/OpenGraph/microdata/visible text, and generate repair drafts. Data 4 $0.01 100.00%27 chk $0.02 4 BSE
● Snapfix ◦ Outcome-verified image transformation API: image plus natural-language instruction in, verified transformed image out. $0.05 per transform, x402 on Base, no account or API key. AI 1 $0.005 100.00%26 chk $0.07 3 BSE
● longwatch ◦ Monitoring API for AI agents. Look up a page, RSS feed, crypto price, or SEC filings in one call ($0.001), or create a standing watch ($0.005) and poll for structured alerts since a cursor. Form 4 insider trades are parsed; 8-K item codes are decoded. Pay per call in USDC over x402 on Base and Solana — no API key or account. GET /demo is a free NVDA sample. Data 2 $0.001 100.00%27 chk $0.004 4 BSE
● DJZS Protocol ◦ Deterministic pre-execution audit of a prediction-market trade thesis. Submit the reasoning behind a trade as free text; receive PASS, WAIT, or FAIL with the taxonomy codes that fired, a risk score, and a reproducible verdict_hash. Audits the reasoning, not the transaction. Out-of-scope requests are refused free. Payable over HTTP x402 or MCP. Blockchain 1 $2.00 100.00%26 chk $8 1 BSE
● BNM Data Shop ◦ Official public-data x402 shop: 36 paid GETs. US hay, cattle, and grain ticks (USDA AMS nationwide) and FDA import-alert tables $0.05 for the entire current table; official letter/order caches $0.02 per id or $0.05 per page of 10. USDC on Base. Data 36 $0.05 100.00%27 chk $0.25 3 BSE
● Coprocesseur déterministe ◦ Calculs déterministes vérifiables pour agents IA : tableaux d'amortissement de prêt, distances géodésiques, conversions d'unités. Chaque réponse inclut une preuve SHA-256 vérifiable indépendamment par le client, sans avoir à faire confiance au serveur. Compute 3 $0.001 100.00%27 chk $0.002 2 BSE
● Forge Launch Signals + x402 Verifier ◦ Two paid endpoints, USDC on Base (exact scheme, xpay facilitator). GET /launch-signals ($0.03): live pump.fun launch signals - up to 100 newest memecoin launches with normalized screening verdicts (class + reason + measured holder concentration %), current price multiple, 5-min buy/sell flow, unique buyers, volume, liquidity, dev rug-risk history (prior mints/migrations), and smart-money aggregates (counts + net USD flow, no wallet addresses), plus a market_pulse roll-up; every response discloses generated_at/tracker_data_at and an is_stale flag - stale data is disclosed, never fabricated. POST /verify-x402 ($0.015): x402 endpoint verification - pre-flight checks for any x402 API: liveness, latency, 402 handshake, payment-schema validity, payee on-chain activity. Free /health and / self-description. Data 2 $0.015 100.00%27 chk $0.01 1 BSE
● ffpipe ◦ Video conversion for agents: any video to web-ready MP4 from a source URL or direct upload, $0.05 USDC per job over x402 on Base mainnet. Async with free status polling, 24h result availability, automatic retry vouchers. Remote MCP server at /mcp; discovery at /.well-known/x402 and /openapi.json. Other 1 $0.02 100.00%26 chk $1 4 BSE
● makesPDF ◦ Generate compliant PDFs (PDF/A-2A + PDF/UA-1) from markdown or a DSL — about a second, no headless browser. Content 2 $0.01 100.00%26 chk $0.01 1 BSE
● BlinkCodes ◦ Buy real-world digital goods with USDC on Base via x402: gift card codes (Steam, Razer Gold, PSN, etc.), game top-ups, and travel eSIMs. Single-call purchase: POST /api/v1/buy returns 402 priced for the chosen catalog item; replay with X-PAYMENT delivers the code. Catalog of 1200+ products at /api/public/products. Other 1 $0.01 100.00%26 chk $3 1 BSE
● Lazaretto ◦ Deterministic pre-install verification for npm packages, AI agent skills and MCP tools. The free lockfile check matches every exactly pinned dependency against OSV and OpenSSF malicious-package advisories with no account. A paid scan adds behavioral analysis with file-and-line evidence. It reports credential theft, exfiltration, obfuscation, prompt injection and install-time droppers, and returns a signed attestation that verifies offline. No LLM runs in the scan path, so the same input yields the same verdict. A clear result means nothing matched, which is not a statement that an artifact carries no risk. Verification 2 $0.03 100.00%27 chk $0.06 2 BSE
● TaskFleet ◦ Structured-data and data-access APIs for AI agents: web search (with recency filter) via Serper+Brave failover, JS-rendering scraper to clean Markdown or schema-driven JSON, on-chain Base wallet analysis (balances, holdings, activity tags), schema-validated JSON extraction, bulk translation, and structured code review. Every response is a guaranteed-valid JSON envelope. No account or API key — pay per call in USDC on Base via x402. Data 8 $0.01 100.00%26 chk $0.17 4 BSE
● PocketFactory Korean Data API ◦ Pay-per-call Korean official-data APIs for business registration status, disclosed tax delinquency records, and Korean news search. x402 v2 with USDC on Base mainnet. Data 3 $0.01 100.00%27 chk $0.05 1 BSE
● BentCrypto ◦ Machine-payable token intelligence APIs for AI agents and automated applications. Token Risk supports Solana and Base over x402 v2; Token Security provides Solana token-control and Token-2022 security analysis. $0.01 USDC per authorized request, with no subscription or API key required for paid calls. Blockchain 2 $0.01 100.00%27 chk $0.23 2 BSE / SOL
● cogDepot ◦ Anonymous B2B broker for AI-agent service exchanges. Agents list capabilities, negotiate deal terms, finalize, and receive a direct peer-to-peer channel. Paid per call over x402. AI 2 $0.50 100.00%26 chk $1 1 BSE
● First Fold Conversion Briefs ◦ Paid x402 API for AI agents that turns a product offer, audience and proof into a structured conversion-ready landing-page message map. Returns objections, trust language, CTA options and testable first-fold copy in JSON; payments settle in USDC on Base. AI 3 $0.01 100.00%26 chk $0.01 1 BSE
● PayBox Agent Tools ◦ Three deterministic one-cent USDC utilities for AI agents: prompt-injection and secret-exfiltration risk scanning, canonical JSON profiling with SHA-256 fingerprints, and tabular data-quality profiling. AI 3 $0.01 100.00%27 chk $0.01 1 BSE / SOL
● Cloud World Model ◦ Multi-cloud infrastructure simulation API with native x402 pay-per-request support — no signup required. Lets developers, architects, and AI agents model AWS, GCP, Azure, OCI, and DigitalOcean deployments without provisioning real resources. Supports RL autoscaling training, chaos engineering, multi-cloud cost/latency comparison, predictive scaling validation, and AI-generated architecture analysis. All metered endpoints accept USDC on Base mainnet via X-PAYMENT header — no account or API key needed. Compute 10 $0.001 100.00%26 chk $0.92 4 BSE / SOL
301-350 of 857 services ── filtered: all