x402 List

x402 Protocol Service Directory

All x402 Services

SERVICES ── 857 total ── showing 651-700 ── 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
● DeFi Signals API ◦ Paid market-data API for AI agents (x402, USDC on Base): cross-venue perpetual funding rates (OKX, Kraken Futures, dYdX) with a ready-to-use arbitrage spread signal, outlier-cleaned DeFi yields from DefiLlama, and a low-cost BTC/ETH/SOL market snapshot with Fear & Greed index. Clean JSON, exact scheme, from $0.002 per request. OpenAPI at /openapi.json. Data 3 $0.002 100.00%45 chk $0.11 ·sh 18 BSE
● fry.farm x402 Agentic Actions ◦ 15 pay-per-call USDC endpoints on Algorand mainnet: DeFi/DePIN data feeds plus non-custodial transaction builders (staking, LP farming, NFT mint, P2P offers). Builders return unsigned atomic groups - agents sign with their own wallet and submit. No API keys, no accounts. Free machine-readable catalog at https://fry.farm/x402/catalog Blockchain 15 $0.001 100.00%45 chk --- ---
● Runbot Strategy Copilot ◦ StratForge: build + AI-optimize + export a crypto trading strategy in ONE paid x402 call. Tiers by optimizer depth - Flash 2min $2.99, Deep 15min $8.99, Ultra 60min $24.99. Perp futures (OKX Top-20) and Polymarket Up&Down. Paper now, live soon on app.apevsbot.com. Finance 4 $0.25 100.00%45 chk $0 0 BSE
● MIND Protocol ◦ Paid Solana data cards for autonomous agents: price signals, wallet market intelligence, and risk scoring over x402 v2 and USDC. Finance 3 $0.008 100.00%45 chk $0 0 SOL
● EVA MCP ◦ Ask Eva: the autonomous research desk for crypto, DeFi and global markets, from the Everything.inc ecosystem. Eva is a multi-step AI agent that writes and runs code over live, institutional-grade data instead of guesswork: real-time prices, TVL, volumes, open interest, funding rates, liquidations, order-book depth, on-chain flows, news and sentiment. One paid call runs the ask tool and returns a plain-text answer. AI 1 $0.01 100.00%45 chk $0 0 ARB / BSE
● Japan Address API ◦ Normalize, geocode, and parse Japanese addresses. x402-enabled for AI agents. Data 6 $0.001 100.00%46 chk $0.11 ·sh 18 BSE / POL / SOL
● zaref ◦ South African reference data for AI agents: 33 verified series (fuel prices, repo and prime rate, CPI, income tax tables, minimum wage, FX rates, bond yields, ZARONIA and more), two live feeds (government tenders, crypto ZAR prices) and 29 calculators, paid per call in USDC on Base via x402. Every value carries its official source URL, effective date and freshness flag. Every parameter is enumerated in the OpenAPI spec; unrecognised values are rejected with a free 400, never silently defaulted. Data 36 $0.005 100.00%46 chk $0.28 ·sh 10 BSE
● Agent402 Website Release & Offline Tools ◦ Five Base-USDC x402 developer resources: deterministic website release and x402 launch audits, a low-cost HTTPS preflight, and two offline toolkits. Public OpenAPI and x402 metadata are available on the service origin. AI 2 $5.99 100.00%46 chk $0 0 BSE
● Tunelo Agent APIs ◦ South African x402 micropayment APIs on Polygon: a live government tender feed ($0.02 USDC/call) and a SARS crypto-tax estimate ($0.005 USDC/call). Pay-per-call in USDC, no signup, built with @x402/express v2. Data 2 $0.005 100.00%46 chk $0 0 POL
● Groundcheck ◦ Groundcheck is verified enrichment for AI agents. Send a factual claim and it returns a machine verified verdict with a confidence score and cited sources, grounded against live web sources. Identity protocols verify who an agent is; Groundcheck verifies what it says. Single claim grounding is free. Paid endpoints over x402: claim extraction and instrument resolution at 0.005 USDC, document grounding at 0.02, and delivery attestation at 0.05, which returns a signed receipt binding the x402 payment to the delivered content, verifiable offline. v1 and v2 both accepted. No account and no API key. Data 4 $0.005 100.00%46 chk $0 0 BSE
● Japan Furigana API ◦ Japanese text utilities: furigana, normalization, multi-reading names, classification. x402-enabled for AI agents. AI 6 $0.001 100.00%45 chk $0.11 ·sh 18 BSE / POL / SOL
● NewsMesh ◦ Real-time news API for AI agents. Search and filter articles from thousands of global sources. Data 4 $0.01 100.00%45 chk $0 0 BSE
● AEO Audit API ◦ Answer Engine Optimization audit — scores any website visibility in AI assistants (ChatGPT, Claude, Perplexity, Gemini). Returns structured JSON with score 0-100, grade A-F, section breakdowns, issues, and actionable recommendations. Checks structured data, llms.txt, FAQ schema, semantic coverage, and agent-readability. AI 1 $0.25 100.00%46 chk $0 ·sh 0 BSE / BSP (testnet)
● Tantra Authority — The Naked Press catalog ◦ 49 signed AOP offers (courses, eBooks, products by Lawrence Lanoff / The Naked Press), each x402-buyable in USDC on Base mainnet. Catalog: https://index.adagencyforagents.com/v0/offers. Purchase pattern: https://api.tantra-authority.com/api/x402/{id}. Content 1 $19.97 100.00%46 chk $0 0 BSE
● Weather ◦ Weather + nature intelligence: current conditions, 7-day forecasts, earthquakes, volcanoes, air quality, solar activity, and marine data. Multi-source (ECMWF, NOAA GFS, USGS, NASA) with premium AI reasoning endpoint for natural-language weather questions. Data 9 $0.00175 100.00%46 chk $0 ·sh 0 ARB / AVX / BSE / POL
● txdecode ◦ Decode any confirmed Base (mainnet) transaction into a human-readable action plus normalized asset movements (token, amount, USD value). Pay-per-call via x402 — $0.005 USDC, no signup, no API key. Data 1 $0.005 100.00%46 chk $0 0 BSE
● AIScan ◦ AI visibility auditing for websites, pay-per-capability via x402 on Base. 15 endpoints: cheap HTTP checks (llms.txt, Schema.org, MCP discoverability) from 0.06 USDC, full category scores (AEO, GEO, Agent Readiness, MCP Readiness) 0.15-0.20, complete 80+ check audit 0.35, copy-paste fix generation 0.55, competitor gap analysis 0.80. The only scanner with MCP Readiness scoring. Free capability catalog at /api/agent/index. AI 15 $0.06 100.00%45 chk $0 0 BSE
● PopaDex Personal Finance Reference API ◦ Read-only personal finance reference-data and calculation API for AI agents: tax estimates, disposable-income comparisons, sub-central tax rates, and social-security contribution data. Finance 4 $0.01 100.00%45 chk $0 0 BSE
● LedgerBrain x402 KYA KYT KYE Compliance API ◦ x402 pay-per-use KYA, KYT, and KYE crypto compliance API for AI agents. Provides address risk reports, transaction risk screening, entity due diligence, compliance risk screening, and auditable report outputs via USDC payments on Base. No LedgerBrain API key required for x402 endpoints. Blockchain 3 $0.10 100.00%45 chk $0 0 BSE
● AgentLair ◦ AgentLair is identity, trust, and infrastructure for AI agents. Anonymous x402-payable endpoints: pay 0.001 USDC for an A2A AgentCard trust audit, 0.005 USDC to resolve an agent handle to its DID + JWKS, 0.01 USDC to query a trust score, or 0.0001 USDC to submit behavioral events. No API key required — payment is authentication. AI 5 $0.0001 100.00%46 chk $0 ·sh 0 BSE
● LiquidPad ◦ Pay-per-request LiquidPad endpoints. Verify whether a token was deployed via LiquidPad (ERC-8004 anchored), get full agent provenance with fee split, or read the full agents registry snapshot. Blockchain 3 $0.001 100.00%45 chk $0 0 BSE
● TradeOS Crypto Intelligence ◦ Plain read-only crypto intelligence APIs for agents, dashboards, screeners, and research workflows. Finance 9 $0.15 100.00%46 chk $0 0 BSE
● GDELT News Intelligence API ◦ AI-friendly JSON API for global news intelligence built on GDELT. Provides recent news, sentiment, geographic distribution, translingual coverage, and entity graph endpoints via x402 payments on Base USDC. Data 5 $0.01 100.00%45 chk $0 0 BSE
● SolSigs ◦ Real-time Solana data APIs plus ProofGuard receipts for AI agents: 22 specialist workers paid per call in USDC via x402 - DEX prices, arbitrage, wallet intelligence, launch detection, plus signed trust scores and payment/fulfillment receipts. No API keys, no subscriptions. Blockchain 22 $0.001 100.00%46 chk $0 0 SOL
● Crinkl ◦ Crinkl provides real-time, verified, identity-free commerce signals from U.S. consumers who are rewarded in Bitcoin for purchase participation. Agents can buy privacy-safe aggregate demand insights without raw receipts, wallet histories, or personal data. Data 6 $0.001 100.00%46 chk $0 0 BSE / SOL
● Find or Verify ◦ Email finder and verifier API, paywalled per-call with x402 (USDC on Solana). Data 3 $0.03 100.00%45 chk $0 0 SOL
● AxonGate ◦ AxonGate is an x402-paid Clean Context Broker on Base. It converts public web pages into clean Markdown for RAG, autonomous research, and LLM context preparation. Data 1 $0.03 100.00%46 chk $0 0 BSE
● AgentNews ◦ The frontpage of the agentic internet — AI agents bid to post, vote, and comment. All actions gated by x402 micropayments on Base. Content 3 $0.50 100.00%45 chk $0 0 BSE
● Robtex ◦ DNS, IP, AS, and Lightning Network intelligence. 53 endpoints covering DNS lookups, reverse DNS, IP geolocation, BGP/ASN analysis, reputation scoring. Data 4 $0.005 100.00%121 chk $0 0 BSE
● AskClaude ◦ Pay-per-query Claude (Haiku/Sonnet/Opus) plus 8 packaged tools. No subscription, no account. AI 5 $0.01 100.00%121 chk $0 0 BSE
● Stakevia ◦ Pay-per-request Solana validator due-diligence reports. Blockchain 1 $1.00 100.00%121 chk $0 0 SOL
● QuickNode ◦ Blockchain RPC provider with x402-gated multi-chain access. Pay-per-request in USDC on Base with no API key. Compute 3 $0.0001 100.00%121 chk $0 0 AMOY (testnet) / ARCT (testnet) / BSE / BSP (testnet) / POL / SOL / SOLD (testnet) / XLYT (testnet)
● ActionGate ◦ x402 + Stripe billing proxy for APIs/MCP servers. Ships built-in safety tools: risk-scoring, simulation, policy-gate. AI 3 $0.02 100.00%121 chk $0 0 BSE
● GoldRush ◦ x402-native blockchain data — balances, NFTs, transactions, DEX, pricing across 100+ chains. Currently on Base Sepolia testnet. Data 2 --- 100.00%121 chk --- --- BSP (testnet)
● Clash of Coins Checkoutimported ◦ x402 checkout gateway for the Clash of Coins game: exposes the catalog, quotes and purchase of NFT sale lots and in-game shop items, paid in USDC on Base. Other 2 $0.001 97.78%45 chk $31.4k 196 BSE
◐ BlockRunimported ◦ x402 gateway giving pay-per-call access to LLM inference, web search, prediction market data and crypto data, paid in USDC on Base with no account or API key. AI 10 $0.003 100.00%46 chk $6.0k 403 BSE
◐ StableEnrichimported ◦ Pay-per-request access to third party web search and enrichment APIs, including Exa, Firecrawl, Clado, Google Maps, Whitepages, Reddit and PDL, behind a single endpoint with no auth, paid in USDC on Base or Solana. Data 10 $0.002 100.00%45 chk $1.9k 335 BSE / SOL
● Base USDC lending APY ◦ Live USDC lending APY on Base, read on-chain: Aave V3 USDC vs Morpho Gauntlet USDC Prime. Size-aware pick for parking idle USDC: USD per year, days to break even vs Base gas, skip if entry is uneconomic. Conservative two venues only. Finance 1 $0.01 88.89%45 chk $0.71 28 BSE
◐ Frantic ◦ Outsource a task to AI agents on the Frantic bounty board. Fund a bounty with Base USDC, agents claim it and deliver artifacts in the open, and they are paid only when delivery is accepted, with every claim, judgment, and payout sealed to a public receipt ledger. Other 2 $2.00 100.00%46 chk $209 39 BSE
◐ SYNTHORA ◦ On-chain and real-world data intelligence for autonomous agents: 57 x402-native endpoints (wallet enrichment, sanctions/AML screening, DeFi/market data, LLM inference, stock intel, email/DNS/security tooling). USDC on Base mainnet, Ed25519-signed responses. Canonical machine-readable catalogue: https://api.hergertsynthora.com/.well-known/x402.json Data 49 $0.005 100.00%45 chk $3 45 BSE
◐ JarvisClaw ◦ AI API gateway settling in USDC on both Base and Solana. 320 models through one OpenAI-compatible endpoint, plus 21 AIP intent types so callers need not know the URL layout. Every paid response carries an EIP-712 signed settlement receipt verifiable offline. AI 5 $0.003 100.00%46 chk $31 31 BSE / SOL
◐ AgentToll ◦ Base-native onchain data for AI agents, pay-per-call in USDC via x402 v2. Token prices by contract, wallet portfolios valued in USD, token safety checks (honeypot/taxes/owner powers), new-pool radar with a live track record scored against past snapshots, Uniswap v4 pools read seconds after creation, Basename resolution, gas costing, Turkish lira and exchange-spread checks, stateless watch diffs. 21 paid endpoints ($0.001-$0.008), 4 free. Every 402 quote carries the endpoint's request and response schema. Failed requests are never charged. Open source (MIT), MCP server on npm (agenttoll-mcp). Data 21 $0.001 100.00%45 chk $0.61 23 BSE
◐ GBLIN Protocol ◦ Treasury and risk data for a NAV-backed basket token on Base (cbBTC/WETH/USDC) with an automated on-chain crash-response policy. Agents can read live NAV and basket weights, the current market risk regime, MEV-safe swap quotes, and ready-to-broadcast calldata for redeeming to USDC just in time to pay an invoice. Settled via the Coinbase CDP facilitator; a free read-only MCP server is published on npm as @gblin-protocol/mcp-server. Finance 3 $0.001 100.00%46 chk $0.35 20 BSE
◐ Delx Commerce — Intent-First APIs for Agents ◦ Intent-first catalog of 41 pay-per-result x402 APIs for image, speech, video, agent operations, website intelligence, trust, security, MCP/x402 audits, and loyalty. Agents can describe an outcome, receive a ranked route, and pay in USDC without an account or subscription. AI 41 $0.001 100.00%46 chk $2 39 BSE / SOL
◐ CONNSKILL Growth Services ◦ Local market checks, domain rankings and keyword research for AI agents. The Local Market Check combines Google search, Maps listings, observed competitors and optional own-domain presence in one JSON report. Free quotes and task recipes; separately authorized x402 payment in USDC on Base. Partial results stay explicit. Data 41 $0.005 97.83%46 chk $13 21 BSE
◐ Sirenic ◦ French & European company data for AI agents, pay-per-call in USDC or EURC via x402 — company lookup & KYB files, officers, annual accounts & financials, share capital, default-risk scoring, AML sanctions screening, INPI/INSEE documents, e-invoicing supplier checks (France 2026 mandate, Belgium, Poland); official company registries across 12 European countries (Belgium, Switzerland, UK, Norway, Sweden, Czechia, Slovakia, Finland, Poland, Estonia, Latvia, Spanish BORME acts) + worldwide LEI/GLEIF. Ed25519-signed responses, no API key. Data 89 $0.002 100.00%46 chk $47 21 BSE
◐ Web Search & Data API — SERP, page reader & scrapersimported ◦ Pay-per-call web search and web data for AI agents. Multi-engine SERP (web + news, batch, rank-fused), search-and-read (top hits to markdown in one call), URL-to-markdown scraping, Google Trends (interest over time, related queries/topics, by region), structured data (WHOIS/DNS, enrichment, SEC filings, crypto/DeFi, geocoding, weather) and academic search (papers, references, cited-by, lit-review). 43 endpoints, USDC on Base, no key, no signup. Data 43 $0.005 76.09%46 chk $133 60 BSE
◐ ReadXimported ◦ Public X/Twitter data as read-only JSON: profiles, timelines, single tweets and conversations, search, hashtags, lists, followers and following. Paid per single call via x402, $0.01 in USDC on Base or Solana, with no API key or registration. Data 10 $0.01 100.00%46 chk $9 21 BSE / SOL
◐ Usenamiimported ◦ Pay-per-call API for perpetual futures market data across 30+ CEX and DEX venues: funding rates and cross-venue spreads, orderbook depth and slippage, open interest, basis and carry, and funding arbitrage signals. Data 10 $0.001 100.00%45 chk $0.34 23 BSE
◐ StableTravelimported ◦ Pay-per-request travel API for flight search, award seat availability, hotels, activities, transfers and flight tracking, built on Amadeus, Seats.aero, SerpAPI and FlightAware. No account or API key required. Data 10 $0.0054 100.00%45 chk $78 74 BSE / SOL
651-700 of 857 services ── filtered: all