solvitor-mcp is an MCP server that enables interaction with the Solvitor API to help developers extract IDL files from closed-source Solana smart contracts and decompile them. The server exposes a decode tool that retrieves the IDL from a given Solana program using reverse-engineering techniques. Inputs include program_id (string): a Base58-encoded Solana program address, and an optional url (string): a Solana RPC endpoint URL (defaults to mainnet-beta). The tool returns an IDL structure with program metadata and a type field indicating either 'anchor' or 'native'. This server is implemented in Rust and is installable via cargo install solvitor-mcp. Configuration can be added to Claude desktop config JSON, for example mapping the solvitor-mcp command with an API key in environment variables. Prerequisites include the Rust toolchain and a Solvitor API key (obtainable from solvitor.xyz). For users requesting remote MCP, there is a note about availability via social channels. The project is MIT licensed.