{"name":"Crank MCP","summary":"Non-custodial trading infrastructure for AI agents on Solana. Every read tool is free to call: no signup, no API key, no wallet required. Start read-only, simulate, then opt into execution.","endpoints":{"default":"https://mcp-dev.crank.ing/mcp","plugin-v1":"https://mcp-dev.crank.ing/mcp/plugin-v1","chatgpt-v1":"https://mcp-dev.crank.ing/mcp/chatgpt-v1"},"install":{"claude_code":"claude mcp add --transport http crank https://mcp-dev.crank.ing/mcp","transport":"streamable-http"},"tool_surface":{"read":105,"write":43,"value_bearing":25,"free":"All read tools are free: quotes and routing, balances and portfolio snapshots, transaction history, token info and verification, market intelligence, directional signals, market regime, strategy marketplace reads, backtests, Crank Score, hive aggregates, usage reports, disclaimers. Write tools (alerts, policies, journal) are also free -- they move no funds.","paid_rail":"Value-bearing actions (swaps, perps, lending, staking -- tools that move real funds) carry a technology service fee, volume-tiered from 0.75% with a USD 0.05 floor, settled per action over the x402 payment rail. Reads are never billed; a refused policy check is never billed."},"auth":"Reads need no auth. Wallet-scoped tools use a wallet-signature (SIWS) challenge exchanged for a JWT; Crank never holds, stores, or transmits user keys. Mutating tools output unsigned transactions for the owner's own key to sign.","docs":{"llms_txt":"https://crank.ing/llms.txt","agents_md":"https://crank.ing/AGENTS.md","for_agents":"https://crank.ing/agents","mcp_descriptor":"https://crank.ing/.well-known/mcp.json","disclosures":"https://crank.ing/disclosures"},"workflow_hint":"Call the get_trading_workflow tool first: it maps the orient -> intelligence -> simulate -> risk-size -> execute -> monitor loop to concrete tools."}