A model call, a video render, a neural search and a chain RPC read all settle against the same USDC balance, so adding a capability does not mean adding a billing relationship. Prices sit in the tool descriptions rather than behind a pricing page, and the per-agent budget is what makes handing this to a child agent survivable — it stops at the limit you set, not at your balance.
An x402 payment gateway behind twenty tools: model chat and media generation, web and crypto data, prediction markets, sandboxed code execution and raw JSON-RPC, each billed per call in USDC. The wallet is created on your machine on first run and the key never leaves it — payments and orders are signed locally.
- A second model on demand: chat routed by mode — powerful, reasoning, coding, cheap — or by model name, with a listing of what exists and what each costs
- Media in four shapes: images generated or edited, music tracks of roughly three minutes, ElevenLabs speech and sound effects, and short MP4 video, with RealFace enrollment for driving video with a real person's likeness
- Two search engines with different bills: Grok Live Search over web, X and news priced per source returned, and Exa neural search at a flat rate
- Market and chain data: DexScreener pairs at no charge, Pyth-backed quotes and OHLC across crypto, FX, commodities and 12 global stock markets, DefiLlama TVL and yields, and Surf's 83 crypto endpoints
- Prediction markets from data to order: cross-venue markets through Predexon, position and open-order reads, and signed Polymarket orders from a gasless deposit wallet
- Raw JSON-RPC against 40+ blockchains at $0.002 per call, and a disposable Modal sandbox with an optional GPU
- Spending control before the spending starts: budgets and per-agent limits set on the wallet, so a child agent is blocked at zero rather than at your balance
- A trimmed tool set when you do not need all twenty — media, trading, research or chat, chosen by profile
Node.js 20.19 or newer and a USDC balance — the wallet is created on first run and funded by you, on Base or Solana, with no per-service API keys anywhere. Back up the key at ~/.blockrun/.session: it signs both the payment wallet and the Polymarket deposit wallet, and losing it loses both. Some calls carry no charge: DexScreener data, voice listing, and the wallet tool itself. Polymarket trading moves real money separately from the API budget, needs an explicit confirmation on every order, and is capped per order — $25 by default — with an optional session cap on top. MIT licensed.
One command — npx -y @blockrun/mcp@latest