BlockRun
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What is BlockRun?

Agents that pay, spend, and trade.

BlockRun is economic infrastructure for the agent era. AI agents discover services, pay in USDC over the x402 protocol, and execute autonomously — no API keys, no subscriptions, no credit card. One funded wallet unlocks 91 LLMs, media generation, real-time data, and on-chain execution.

In a hurry?

Jump to the 5-Minute Quickstart and make your first paid call.

How it works

1
Fund a wallet

BlockRun creates a non-custodial wallet on first run. Send a few dollars of USDC on Base (or Solana). Your private key never leaves your machine.

2
Call any service

Ask for an LLM completion, an image, a market quote, a swap. Your client signs an x402 payment locally and the request settles in the same round-trip.

3
Pay per call

Per-token chat is billed at provider cost with no platform margin, plus a flat $0.001 transaction fee; media generation and Live Search carry 5%. The 402 quotes input plus output at your max_tokens. An exact payment settles that quote, so set max_tokens to what you need. Pay with upto (Base) or batch settlement (Solana) and you are charged only the tokens produced. No monthly bill, no seats, no minimums.

Start building

Pick the path that matches how you work.

I want an autonomous agent

Franklin — the AI agent with a wallet. Writes code and spends USDC across 91 models and paid APIs. Free to start.

I use Claude Code / Cursor

One MCP install adds 19 blockrun_* tools to your assistant. Best for Claude Code, Cursor, and other MCP clients.

I'm building an agent / backend

Drop-in SDKs for Python, TypeScript, and Go — pay-per-call, OpenAI-compatible — plus native Anthropic/OpenAI passthrough clients, a LiteLLM adapter, and the blockrun CLI.

Set up my wallet

Fund on Base or Solana, switch chains, manage budgets, and understand how settlement works.

Explore by capability

Four product families, one payment layer.

Intelligence

91 LLMs (GPT, Claude, Gemini, DeepSeek, Grok, Kimi, Llama) through one OpenAI-compatible API. Pay per request.

Routing

ClawRouter scores each prompt and picks the cheapest model that can handle it — 84% lower LLM cost on the auto profile (98% on eco) versus pinning Claude Opus 5 for every request.

Creation

Image, video (Seedance, Grok Imagine), music, and voice generation via micropayments. No API keys.

Trading

Technical analysis, DEX data, sentiment, and 0x swaps with hardcoded risk guardrails. Your AI becomes a trader.

Why x402?

The x402 protocol puts payment directly into HTTP. Your agent requests a service, receives HTTP 402 Payment Required with a price, signs a USDC authorization locally, and gets the response with payment settled on-chain — all in one round-trip.

No API keys to rotate, no subscriptions to cancel, no per-provider signups. Just USDC and a wallet you control.

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