Find an agent your AI can call

ENS resolution, reverse resolution and identity enrichment for agents, pay per call in USDC on Base via x402 or MPP.

Convert stablecoins (USDC, USDT, DAI) to spendable prepaid cards and gift cards instantly. Works with Google Pay. Multi-chain: Ethereum, Solana, Stellar, Arbitrum, Base, Polygon.

Keyless x402 on Base USDC for AI agents: cheapest OFAC wallet screen ($0.001), multi-list sanctions + signed compliance receipt, company research/org enrich from $0.03, verified company file $0.95. Live Wikidata+SEC+DNS+GLEIF. Ed25519-attested. No API key. People enrichment elsewhere; companies + counterparty proof on LION. npx agentcash add lionx402.com

x402 service diagnostics, annual SEC financial facts, CSV validation, citation-source comparison, web extraction and email domain checks for agents. Retrieve six annual US-GAAP USD fields by CIK with filing links, same-filing growth checks and optional observed revisions; check supplied CSV and citations; extract public page text, rendering JavaScript in a headless browser when needed; inspect email address syntax and mail-domain DNS. Pay per call with native USDC on Base or Solana via x402, without a separate API key. Wallet-first free trials cover CSV, column-spec, citation and static-page…

Minifetch is a hosted toolkit for web developers and AI agents. Always pay-per-fetch, no subscription.

Mycelia Signal Sovereign Oracle — three-layer data pyramid. Layer 1 Oracle Data (raw signed measurements), Layer 2 Oracle Information (structured context), Layer 3 Oracle Intelligence (cross-domain pattern recognition), Layer 4 Oracle Wisdom (longitudinal pattern synthesis — coming soon). x402 payments (USDC on Base). Ed25519 signed. No API keys. **MCP:** this API is also available as a Model Context Protocol server over streamable HTTP at `api.myceliasignal.com Attach the URL as a custom MCP connector; paid tools are x402-gated at the same prices listed here.

Nansen blockchain analytics API. Pay-per-call via x402 — no API key required. MPP (Tempo) is also available as an alternate payment rail.

Build on EVM RPC operated by NodeFlare. Published compute-unit prices, regional failover and a free 3M CU plan. Pay by card or crypto.

Modern Hyperliquid trading terminal and dashboard with live execution, AI news, liquidation analytics, trader data, and an IBKR stocks and options private beta.

OneSource - three data families for AI agents on one host: Ethereum mainnet, Sepolia testnet, and Robinhood Chain RPC (served from OneSource-operated nodes), plus Deepstate on-chain market data (order books, trades, candles, stats, analytics) under /deepstate/v1/* - spec at api.onesource.io - plus The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain, under /standard/v1/* - spec at api.onesource.io Per-call or batch/session payments: USDC on Base via x402, or pathUSD/USDC.e on Tempo via MPP.

Otto AI runs a swarm of autonomous agents exposing 84 pay-per-call services on x402 V2 across eight capability tags — Market & Token Intelligence, DeFi & Markets Data, Web & Domain Intelligence, Real-World Data, AI Creative & Tools, Portfolio & Accounts, Execution, and x402 Open Router. Settled in USDC on Base on every endpoint; 66 of 84 also accept USDC on Solana (each path's x-payment-info.networks names its own; the live 402's accepts[] is authoritative). Permit2-ready for any ERC-20. From $0.001 per call.

Pay-per-call access to Pocket Network services. No account, no API key.

Pay-per-use AI, DeFi, payment, compute, and RTP primitives for autonomous agents via x402 and MPP on Base.

Pay-per-session browser automation. Create a real browser session ($0.10) and control it with AI-powered navigate, act, extract, observe, screenshot, and url actions.

Pay-per-request access to FullEnrich, CompanyEnrich, LeadMagic, Exa, Firecrawl, Google Maps, Serper, and Whitepages APIs. No auth, no subscriptions.

Pay-per-request access to flight prices and booking links (Google Flights via SerpAPI), award availability (Seats.aero), and real-time flight tracking, airport info, history, and predictions (FlightAware AeroAPI). No auth, no subscriptions.

Buy the cheapest inference. Sell your credits. The open order book for AI models. Up to 90% off Claude Opus 5.5, GPT 6 Astra, and more.

Post-quantum attestation and evidence services for AI agents. Every paid response carries an ML-DSA-65 (FIPS 204) signed attestation anchored to Hedera mainnet HCS, with free public verification. Payment: x402 (USDC on Base, eip155:8453). Unpaid requests return HTTP 402 with payment terms. A failed operation is never charged. Manifest: /.well-known/x402.json - llms.txt: /llms.txt

Keyless pay-per-call APIs for AI agents: 30 tools across compliance, trade, safety, web and data. Pay per call with USDC on Base via x402. No account, no API key.

Credit infrastructure for AI agents. They spend on credit, you settle later, with controls on every transaction.

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.

Real-time web search for AI agents — search the web and get ranked SERP-style results as clean JSON: title, URL, snippet, relevance score, optional LLM-generated answer. Find up-to-date information online — latest news, current events, finance. Date, domain and exact-phrase filters.

125 production APIs behind HTTP 402 micropayments. 87 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, USDm on MegaETH, or USDC on Solana.

x402node — precise, deterministic developer and data tools for AI agents. Chain data, parsing, crypto, conversion. Pay-per-call over x402, settled in USDC on Base.

Query indexed x402 payment data and send USDC on Base and Solana.

Agent-first API for searching and booking restaurant reservations via Resy, including reservation jobs that book hard-to-get tables the moment reservations open. Supports MPP (Tempo) and x402 (Base/Solana) wallet auth, plus API-key subscription auth ($6/month, first 30 days free, paid operations covered). Instant booking costs $0.01 USDC; a reservation job costs $3.00 USDC. Also serves live restaurant wait times (crowd/line data) at $0.01 USDC per query, and Blackbird restaurant discovery at $0.01 USDC per query — search ~2,000 restaurants by neighborhood/city, with daily-refreshed specials;…

ApiToll runs pay-per-call data agents on x402 (USDC on Base + Solana). This service returns real-time crypto + DeFi market data — token prices, DeFi yields, TVL, stablecoin supply, and DEX volume — paid per call, no subscription, no API keys. Sourced from DefiLlama across every major chain.

Pay-per-call HTTP APIs for agents. No accounts, no API keys: unpaid requests return 402 with x402 payment requirements; retry with a payment authorization to get data. Free machine-readable catalog at /catalog.

Signed spend receipts for agent x402 payments — who paid which call, verifiable by a third party. Treasury desk for agent spend — export, policy, evidence. Possession book for principals. POST /v1/chat/completions returns a signed receipt: hub, model, amount, verify_url. USDC on Base or Solana. POST /a2a-message is the same paid door. GET|POST /v1/agents/{agent_id}/book is possession-gated last-N collected spend with budget Y and remaining (prepaid ceiling). Private Spend: registered sessions get vendor_blind by default. Replaceable Signer: receipts carry dual signatures (primary + co_signatu…

Top cryptocurrency prices and charts, listed by market capitalization. Free access to current and historic data for Bitcoin and thousands of altcoins.