Open-Source MCP Lets AI Agents Edit Your YC Application Directly via GraphQL

arthurcolle · x · 2026-11-10

A developer noticed that the YC application portal only restricts post-submission edits on the frontend — its GraphQL API has no such limits: nearly everything, including the oneliner, can be updated after submission.

Arthur Colle open-sourced yc-graphql-mcp (MIT, v2.0.0, 17 tools, Node 22/24/26): a GraphQL MCP server for the YC application that lets AI agents in any MCP client read answers, review changes, and verify every save. Features include private sessions, exact previews, and durable mutation receipts.

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