x402 Data API
x402 data APIs that return market, on-chain, and reference datasets behind a pay-per-request HTTP 402 paywall. Each service below is live-monitored: hit an endpoint, receive a 402 with payment terms, settle onchain, and retry.
By task: Web Scraping API · Web Search API · Screenshot API · PDF API · IP Geolocation API · WHOIS API · Company Data API · News API · Weather API · Geocoding API · Real Estate API · Social Media API · Lead Enrichment API · SEO API · Salary API · Web Search MCP · Best Real Estate API · Data Enrichment API · Backlink API · Keyword Research API · Best SEO API
DATA SERVICES ── 442 total ── for live status visit /status
STATUS ── ● online · ◐ degraded · ○ offline · ─ unknown ── live health, see /status.
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).
Sponsor · This spot is open · 25 USDC/week(?)A sponsor supports this site. Learn about sponsorship.
| STATUS | NAME | DESCRIPTION | EP | FROM $/REQ | UPTIME · DAILY ROLLUP | VOL 30D | BUYERS 30D | NETWORKS |
|---|---|---|---|---|---|---|---|---|
| ◐ | Scout Multi-Source Intelligence API | DescriptionSearch API for agents that queries 18 sources in parallel (Hacker News, GitHub, npm, PyPI, arXiv, Stack Overflow, X/Twitter, Product Hunt and others) and returns structured JSON, plus aggregated multi-source research reports. Paid per call in USDC on Base or Solana, from $0.01. | 10 | $0.01 | 100.00% | $0.76 ·sh | 310 | Base/SOL |
| ● | santyvv-data | DescriptionPay-per-call market and on-chain data API over x402 (USDC on Base): multi-venue consensus crypto prices, DeFi TVL and stablecoin supply, DEX volume and protocol fees, yield pool history, and keyless read-only on-chain reads (balances, receipts, logs, eth_call) on Base, Ethereum, Arbitrum, Optimism and Polygon. No accounts, no API keys; every paid response is normalised and falls back to a second data provider. | 26 | $0.01 | 100.00% | $0.02 | 2 | Base |
| ● | WITAN Markets | DescriptionMarket where AI agents sell what they measured: knowledge units (benchmarks, failure post-mortems, working parameters) reviewed against their evidence, and versioned, signed datasets. Each paid read is one x402 payment in USDC; search, listings and free reads need no payment or key. Remote MCP server at https://witan.markets/mcp, OpenAPI at https://witan.markets/openapi.json, Python and JS SDKs. Public beta on Base Sepolia (test USDC). | 3 | --- | 100.00% | --- | --- | BSP |
| ● | agentsvc.io | Description122 pay-per-call APIs for AI agents, paid per request in USDC via x402 on Base, Solana, Polygon or Arbitrum, no account or API key. Task agent that runs many tools in one call, research reports with citations, web scraping and search, news, papers, speech to text and text to speech, OCR and invoice extraction, EU company checks (KYB, VAT, sanctions, GDPR site audit), token risk, honeypot and pre-trade checks for trading bots, wallet and DeFi data, satellite images, weather and geocoding. OpenAI-compatible /v1 paths for embeddings and audio. Full catalog: https://agentsvc.io/api/v1/services | 50 | $0.002 | 100.00% | $11 | 42 | ARB/Base/POL/SOL |
| ● | TensorFeed | DescriptionReal-time data API for the AI industry: aggregated news, provider status, model pricing and benchmarks, historical series and security feeds. Free no-auth endpoints plus premium x402 endpoints at $0.02 per call in USDC on Base or Solana. | 10 | $0.02 | 100.00% | $0.20 | 6 | Base/SOL |
| ● | Horizon Pulse | DescriptionPay-per-call APIs for AI agents via x402 v2 (USDC on Base, Solana or Polygon, or RLUSD on the XRP Ledger; no API key): web search with page contents, web fetch to markdown, HTTP proxy, structured page extract, page screenshots, PDF to text, x402 endpoint checks, CDP Bazaar index checks, an x402 marketplace search and pre-pay quote, discourse split, and crypto data (spot prices, technical indicators, perp funding, gas fees, DeFi yields, wallet portfolios). 17 paid routes. | 17 | $0.002 | 100.00% | $60 | 27 | Base/POL/SOL |
| ● | scrape402 | Description66 pay-per-call HTTP APIs for AI agents over x402 (USDC on Base, no signup, no API keys): web scraping and JS-rendered page-to-markdown, web search, isolated code sandbox, LLM ask/classify/summarize, crypto and DeFi market data (spot, candles, order books, funding rates, yields, TVL, stablecoins), prediction-market odds, news and sentiment, plus agent utilities (KV memory, verifiable randomness, webhooks, notary, metered upstream gateways). | 40 | $0.002 | 100.00% | $0.54 | 26 | Base |
| ● | PNDA | DescriptionLead generation, company data, SEO keywords and AI media APIs, pay per call in USDC on Base (x402) | 21 | $0.002 | 100.00% | --- | --- | Base |
| ● | fetchx402 | DescriptionPay-per-request network utilities for agents via x402 V2 (USDC on Base). Live DNS, WHOIS/RDAP, SSL/TLS, HTTP headers, redirect tracing, plus host-intel and uptime bundles. No API keys. Not @x402/fetch. Catalog: https://api.fetchx402.com/v1/catalog Docs: https://api.fetchx402.com/docs Probe example: GET /v1/tools/dns?domain=example.com | 7 | $0.005 | 100.00% | $0 | 0 | Base |
| ● | LoneStarOracle WhaleAlert | DescriptionReturns large on-chain transfers on Base and Ethereum above a chosen USD threshold, over a lookback window of up to 24 hours, with wallet labels and explorer links. | 1 | $0.05 | 100.00% | $0.89 ·sh | 43 | Base/SOL |
| ◐ | AgentToll | DescriptionBase-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). | 21 | $0.001 | 100.00% | $0.49 | 17 | Base |
| ● | Oblique Markets | Descriptionx402-paid APIs and MCP for AI agents: on-chain analytics, web extraction, x402 endpoint verification, Bazaar market data - USDC per call, no accounts. | 3 | $0.002 | 100.00% | $5 | 145 | Base/SOL |
| ● | You.com Search API | DescriptionReal-time web and news search with ranked, citable results (from $0.005 per call; livecrawl adds $0.001 per result), plus an async Finance Research endpoint that returns cited answers to financial questions ($0.11 or $0.50 depending on effort tier). Paid per request in USDC on Base or Solana via x402, no API key required. | 2 | $0.005 | 100.00% | $6 | 69 | Base/SOL |
| ● | Roach: Solana bag check | DescriptionSend the roach in first. Before your agent apes into a Solana token, the roach crawls the holder list and comes back with the dirt: top-10 holders, how much the dev still holds, launch buys and dev sells, known KOL wallets, and plain flags. Pay per call in USDC on Solana over x402 v2, no key, no signup. Lite reads cost $0.02. Full reads cost $0.08 fresh or $0.02 cached, with an optional AI read for +$0.04. You only pay when the scan comes back. | 1 | $0.02 | 100.00% | --- | --- | SOL |
| ● | Stelar Digital | DescriptionLive crypto grid-trading telemetry, market-regime classification, sentiment scoring, and price data from a real production trading operation. Built by one human + one AI. | 8 | $0.005 | 100.00% | $0.80 | 13 | Base/SOL |
| ● | x402 Toolbox | DescriptionA toolbox of x402 payment-protocol mechanics: 25 small real endpoints on Base mainnet USDC, each demonstrating a distinct pattern -- oracle attestation, escrow, auction, prediction market, deferred invoicing, subscription reminders, insured data feeds, and more. No API keys, no signup. | 28 | $0.001 | 100.00% | $0 | 0 | Base |
| ● | quickleaves API | DescriptionB2B data enrichment API: details, customers, partners, vendors and competitors for a given company domain, each with a source link. REST and MCP for AI agents and sales teams. | 8 | $0.0145 | 100.00% | $0 | 0 | Base |
| ● | Proyecto Ayuda Data API | DescriptionPublic data paid per call in USDC on Base: BTC/ETH prices, EU VAT validation, OFAC sanctions screening. No API keys, no accounts. | 4 | $0.001 | 100.00% | $0 | 0 | Base |
| ● | Sippar Token Market Data | DescriptionCanonical token market data for a ticker: price, market cap, FDV, liquidity, 24h change and volume with buy/sell split and netflow, launch date, on-chain total supply (Nansen token-screener plus on-chain reads; response includes the required "Powered by Nansen API" attribution). Neutral facts only, no ratings, no predictions, not investment advice. | 5 | $0.0035 | 100.00% | $20 | 4 | Base |
| ● | UK HMO Licence API | DescriptionChecks whether a UK property holds a House in Multiple Occupation licence, by postcode and house number, by postcode area, or by licence number, returning council, licence type, expiry and occupancy limits. | 3 | $0.02 | 100.00% | $0.11 ·sh | 22 | Base |
| ● | EDGAR Data API | DescriptionSEC EDGAR data for agents: company profiles by ticker, recent filings, full XBRL company facts, single-concept time series, cross-company concept frames, and full-text filing search. $0.001-$0.005 USDC per call on Base mainnet via x402 v2 (PayAI facilitator). | 6 | $0.001 | 100.00% | $0.008 | 3 | Base |
| ● | QuerySpigot | DescriptionIrish Companies Registration Office (CRO) company lookup, name search, and company resolution for AI agents. Structured JSON with source provenance and snapshot IDs. Pay per request with x402 v2 and native USDC on Base. No customer account or API key. | 1 | $0.01 | 100.00% | $0 | 0 | Base |
| ● | Agent Utility Suite (Vanaken Digital) | DescriptionPay-per-call data tools for AI agents, built on official public data: SEC EDGAR filing sections, 8-K events, financials, insider trades and company red-flag dossiers; OFAC sanctions screening and counterparty checks; web page to Markdown and web search; Treasury/BLS/Fed economic indicators; Base token and wallet risk checks. 40+ tools over HTTP and MCP, x402 v2, USDC on Base. Free real-output samples for every paid tool at /api/v1/samples. | 14 | $0.002 | 100.00% | $2 | 14 | Base |
| ● | MRR Ledger | DescriptionSourced, dated revenue data on real AI-agent businesses (every figure has a source URL and an as-of date). x402 on Base: full-history CSV export $0.25, bulk JSONL $0.50, expiring API passes from $0.50; free tier, static JSON and MCP server at /mcp. | 2 | $0.25 | 100.00% | $0 | 0 | Base |
| ● | RelayShield | DescriptionThreat intelligence and identity-risk API: breach exposure, infostealer log detection, SIM-swap and session-hijack checks, ransomware victim lookup, and AI-agent-specific security checks (malicious MCP server detection, prompt-injection breach detection). 24 endpoints, all indexed in the Coinbase CDP Bazaar. | 10 | $0.10 | 100.00% | $18 | 6 | Base/SOL |
25 of 442 services ── category: Data ── all services
Measurement methodology
Page snapshot as of .