Onchain & crypto

Testnet faucet claim: sends testnet gas or test stablecoins to your address on Base Sepolia, Ethereum Sepolia, Solana Devnet, Robinhood Testnet and more. $0.10 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.

+4 more from HivemindOS

Given a Base DEX pair (pool) address, returns price, liquidity, 24h volume, buy/sell transaction counts and FDV from DexScreener. For agents analysing a specific pool's depth and activity.

Current block height for Base Sepolia. Returns the latest block number as an integer, read from the chain at request time.

+5 more from shelf-production-43b5.up.railway.app

Get the total supply of any ERC-20 token on Base mainnet. Pass the token contract address. Returns the raw total supply, decimals, symbol and the human-readable supply in one JSON response. Read-only, live on-chain data.

+7 more from heb-utils-x402.hebutils-api.workers.dev

One paid call on agentic-trades.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://agentic-trades.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.

Runs pre-trade-gate (risk, sellability, route, deployer), b20-gate (seize/freeze/pause; N/A for non-B20 tokens), owner-powers and dump-risk in parallel on a Base token, with clanker-token-audit as provenance that never moves the verdict. Returns GO/HOLD/STOP, what each check saw, an unverified list, a max size held to 2% impact on the exit-liquidity read, and a receipt. GO only if every applicable check ran clean; if a gating check could not run there is no GO and no charge.

Check whether an ENS identity name for an AI agent, API or MCP server is available on x402 Identity Hub (*.402bot.eth, *.402api.eth, *.402mcp.eth). Returns availability, the mint fee and where to register.

Reads the deployment records of Clanker's own factories on Base (v4 tokenDeploymentInfo, v3.1/v3/v2 deploymentInfoForToken; v0/v1 via the factory's TokenCreated in the deploy receipt) to verify a launch: version, factory, requester, pool, and whether the LP position NFTs are held by Clanker's locker. Cross-checked with clanker.world. Returns clanker_verified, not_clanker or unknown; RPC failure is not charged.

Token info and total supply for any ERC20 on Ethereum, Base, Arc or BNB Chain: name, symbol, decimals and total supply (raw and in token units), read at a named block. A contract that is not an ERC20 is refused before any charge.

x402 ping: the cheapest end-to-end payment test for an x402 client or agent wallet, returns an echo and the server pid

Detailed profile for a single AI agent (by chain + agentId)

+6 more from api.dexl.io

Scan Solidity & Anchor code

+3 more from tokenos.ai

Free read-only crypto whale-tracking & market-data MCP tools across 14 chains. No auth.

Instagram research, Story monitoring and creator comparison. MCP x402 paid calls, USDC on Solana.

Packaging material prices, quote checks, contract price adjustments, pack costing and supplier RFQs.

Retired. Use com.stratalize/stratalize.

914 paid market-data & token-safety endpoints — keyless x402 USDC: Base, Solana, XRPL, +8 chains

Read-only MCP server for wafergraph.com's semiconductor & AI supply-chain data: 30 tools, no auth.

Machine-economy newswire and paid changes-since for agents. MCP is challenge-handoff, not a wallet.

Timestamp & verify evidence on-chain, free. Proofpack: a portable BEEF+BUMP proof bundle per txid.

Build, backtest, and deploy crypto trading strategies via MCP with 7-stage validation.

Permanent on-chain memory for AI agents on Lightchain via a one-time unlock.

Production-grade cryptography toolkit with 31 MCP tools for classical, PQC, and KMS workflows.

Query tech-industry-market chain transmission and entity status.

Cross-network DeFi API data, AMM analytics, and SDK docs for 17+ networks.

Non-custodial stablecoin bill-pay rails on Celo & Base for AI agents, settled on-chain via MCP.

Turn sales-call transcripts into traced proposals, contracts, and NDAs.

Abstraxn: public Web3 MCP server for read-only chain data and pay-per-call relays.

Deterministic AI liability attribution with Bitcoin-anchored proof certificates.

On-chain ERC-8004 agent registry. Search, register, and check reputation across 16 chains.