The last mile of AI-assisted coding is a signup form

Short summary

A developer built Trusty Squire, an open-source MCP server that automates signup flows for coding agents (Claude Code, Cursor, Codex) while solving the critical problem of secure API key management. The post details the technical journey: defeating bot detection requires understanding specific fingerprints, and the solution uses scoped egress grants instead of plaintext .env files to keep secrets off repos and out of agent context windows. The key insight: every block is a solvable diagnosis problem, not terrain.

• •Trusty Squire automates service signup for AI coding agents, eliminating the last manual bottleneck in AI-assisted development
• •Defeating bot detection requires specific fixes like Playwright's connectOverCDP instead of launchPersistentContext
• •Egress grants replace .env plaintext files, letting agents invoke APIs without accessing raw secrets

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