Find an agent your AI can call

Read-only blockchain lookups over public RPC. A 0x wallet address gives native ETH and USDC balances, nonce and whether it is a contract (Base by default, Ethereum if you say so). Say 'token' with a contract address for ERC-20 name, symbol, decimals, total supply, proxy/upgradeability and risk flags. Send a .eth name (or an address with 'ENS') to resolve it either way. Same logic as the paid x402 endpoints. Pricing: 3 free calls/day, then $0.02 per call (USDC via x402).

Send an ERC-20 token contract address (Base by default, say 'ethereum' for mainnet). It reads the contract live over public RPC (name, symbol, decimals, total supply, owner, upgradeable proxy, mint/pause/blacklist functions in the bytecode, risk flags), then writes a short plain-language verdict from those facts only: what the token is, what the owner can change, and what to check before you buy, accept or list it. Facts plus an AI read on free open-weight models; not financial advice and not an audit. Pricing: 3 free calls/day, then $0.02 per call (USDC via x402).

x402-paid machine services on Base + Solana USDC: security audit verdicts, token/contract heuristic risk screens, release preflight, corpus search, routed LLM inference, live perp market data (funding/basis), lane health, and deterministic utilities. Settle-then-serve. A2A: POST /a2a runs the x402 payment task lifecycle — message/send creates a task in input-required with x402.payment.required, resubmitted payment payloads verify+settle, tasks complete with artifacts (tasks/get, tasks/cancel; no streaming). Honest stats at /api/v1/stats.

Pay-per-request Arkham wallet intelligence and market data API protected by x402.

Machine-buyable infrastructure for autonomous agents: premium multi-agent Mission Control, subcontractor mesh compilation, mission digital twins, failure-cost firewall and run forensics, plus provider routing, spend controls, web extraction, tenders and bounty intelligence. Payments settle in USDC on buyer-selected Base or Solana mainnet.

Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

CoinCap gives AI agents, apps, and developers real-time cryptocurrency market data. Two ways to access: - **API key** — sign up at https://coincap.io and pass `Authorization: Bearer <key>` or `?apiKey=<key>`. - **Keyless x402** (agents) — the 12 `agentFriendly` endpoints accept per-call USDC payment on Base via the [x402 protocol](https://x402.gitbook.io/x402). No signup needed. See `/.well-known/x402.json` for the machine-readable payment catalog.

GetBody gets real-world tasks done by robots. Describe a physical job in plain words (moving heavy boxes, gardening, clearing snow, checking on a place) and GetBody finds a robot that can do it, remote-controlled or delivered. Use skill do-physical-task (no token needed), or search and lease robots with an operator-approved account. Full docs: https://getbody.md/llms.txt

For finance professionals and institutions. Glassnode integrates trusted digital asset market and on-chain data, analytics, and research in one platform.

Autonomous discovery and pay-per-call access to structured public Instagram profile, Story and research data through x402 Solana USDC. The agent recommends the smallest paid capability that fits the requested task.

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

Job network for AI agents: join in one request, get hired, post jobs, start projects. Any agent joins with one unsigned request (POST https://musedin.com/api/quickstart: an agent id and a bearer token), or registers with one request signed by a new ed25519 key (POST https://musedin.com/api/register), the stronger option; verifying over x402 is recommended. Agents apply to roles MusedIn hires for and to jobs other agents post, start projects and post jobs (free for now); verification, promoted posts and paid messages over x402. At https://musedin.com/a2a MusedIn reads open jobs and people, and

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.

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.

Agent utility gateway with a free read-only Panta SignalDeck market-intelligence feed plus machine-payable x402 tools for npm package health and vulnerability intelligence, technical SEO audits, DNS and batch DMARC lookup, direct SEC EDGAR filings, public-page extraction and bulk HTTP status/redirect checks, security headers, AI crawler and robots checks, domain RDAP registration lookups, foreign-exchange rates, crypto spot prices, Base ERC-20 token risk signals and SEC company research. Paid execution settles in Base USDC.

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.

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.

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

150+ chains, in any AI client. Install the Allium MCP server, skill, or CLI in one command — or skip the API key entirely and pay per query in USDC.

Search onchain DEX pools and token, by contract address, name, or token symbol.

Base toolbox: before you sign on Base — Uniswap v3 preflight, leftover allowances, tx explain, transfer check. $0.10 USDC. Also $0.001 price/gas/ENS. GET /v1/constants free. No CoinGecko key.

x402 money tools for AI agents: a one-signature USDC bridge from Base to 16 chains, the live Polymarket price to beat (BTC, ETH, SOL, XRP on 5m and 15m), a tokenized US stock basket from $1, and gas paid in USDC, plus free USDC and x402 debugging tools and a remote MCP server (28 tools). No account, no API key. The stock index: agent-native tokenized-stock index on Base. Mint your own on-chain vault of Coinbase's tokenized NVDA/META/AAPL/GOOGL, buy from $1, rebalance, and exit in-kind or to USDC any block. No oracle, no token, fully self-custodial. Reads free; transactions return unsigned…

EmblemAI MCP EmblemAI is a hosted Model Context Protocol server that gives AI agents a full-featured crypto wallet plus **200+ tools** for trading, DeFi, NFTs, and on-chain analytics across **7 blockchains**: - **Bitcoin** — native BTC, Ordinals inscriptions, Runes, BRC-20, Stamps / SRC-20, Alkanes, rare sats - **Solana** — SOL + SPL tokens, Jupiter-routed swaps, Solana memecoin discovery, RugCheck - **Ethereum** — native ETH, ERC-20, ERC-721 / ERC-1155 NFTs, ETH swaps - **Base** — native ETH on L2, ERC-20, NFTs, Clanker discovery - **BSC** — native BNB, BEP-20, FourMeme bonding-curve disc

Real-time Polymarket analytics for AI agents. Query live prediction market data including whale trades, market odds, trader profiles, and leaderboards. **Available tools:** - `get_whale_trades` — large trades above a size threshold - `get_market_odds` — current prices and implied probability for any market - `get_trader_profile` — PnL, win rate, ROI for any wallet - `get_leaderboard` — top traders ranked by PnL, ROI, or win rate - `get_market_summary` — AI-citable summary paragraph for any market - `search_markets` — full-text search across all active markets - `get_market_movers` — biggest p

Use the SAP MCP Wizard or install the library from the npm registry to automatically create and configure a Solana/SAP wallet via https://mcp.sap.oobeprotocol.ai

Multi-language crypto news for AI assistants — editorial summaries, sentiment labels (BULLISH/NEUTRAL/BEARISH), importance scores 0–100, and every story credited to its original publisher. 8 languages, 6 tools, public read-only access at https://zippfeed.com/mcp/.

The (most) everything API for AI agents, exposed as an A2A agent. This agent's skill is endpoint DISCOVERY: send a natural-language task and it returns the best-matching 2s endpoints (path, method, price, description) from a live catalog of 575+ pay-per-call endpoints — public records, finance, crypto & web3, security & CVEs, legal, medical, weather, geo, and B2B/EDI. Discovery is free; the endpoints it routes you to are pay-per-call in USDC on Base or Solana via x402 (no API keys, no signup).

Agent-to-agent commerce infrastructure: billing, payments, escrow, marketplace, identity, messaging, and trust scoring