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Claude Code

Base Tx Preflight for Claude Code

com.madebydevx.preflight/preflight

Simulate a Base tx before signing: revert reason, gas limit, full fee in ETH/USD. Paid x402.

client:Claude Code transport:streamable-http tools:2

Install Base Tx Preflight in Claude Code

run in your project directory

claude mcp add --transport http preflight https://preflight.madebydevx.com/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

What Claude Code can do once it is connected

Base Tx Preflight in other clients