Developer Deprecates Symfony Profiler MCP Bundle After Official Tool Supersedes It

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In March 2025, a developer built mcp-profiler-bundle, a Symfony bundle enabling AI coding agents to read the Symfony Profiler's request data, queries, and exceptions to aid debugging. The bundle gained modest traction with around 5,900 Packagist installs before being deprecated this week. Symfony later released its own official equivalent, AI Mate, in December 2025, which surpassed 100,000 installs per month. By August 2026, Mate dropped its MCP server entirely in favour of a plain CLI paired with Agent Skills — markdown files that guide AI agents on when and how to use available tools. Internal testing showed the bare CLI approach prompted agents to use Mate in just 5 out of 20 runs versus 0 out of 20 without the MCP server, highlighting the challenge of tool discoverability for AI agents.

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