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diagnosing-endpoint-performance

Skill

Diagnose why a PostHog endpoint is slow or expensive and propose a concrete fix — bump the cache TTL, enable materialisation, restructure variables, or rewrite the query. Use when the user says "this endpoint is slow", "my endpoint times out", "we're hitting the cost cap on this one", or asks "shoul

0Debugging

Install

git clone https://github.com/PostHog/ai-plugin.git ~/.claude/skills/diagnosing-endpoint-performance

What is diagnosing-endpoint-performance?

Diagnose why a PostHog endpoint is slow or expensive and propose a concrete fix — bump the cache TTL, enable materialisation, restructure variables, or rewrite the query. Use when the user says "this endpoint is slow", "my endpoint times out", "we're hitting the cost cap on this one", or asks "should I materialise this?". Focuses on a single named endpoint, not a project-wide audit.

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Inherit all session tools

Declares no tool restrictions — inherits every session tool

~96 tokens of context used while enabled, before you invoke anything

Documentation

README · ~7 min read

Diagnosing endpoint performance

This skill walks through a specific endpoint that is slow, expensive, or unreliable, and produces a concrete recommendation. It is the deep-dive counterpart to auditing-endpoints (which finds candidates).

When to use this skill

  • "This endpoint is slow / timing out"
  • "Why is my endpoint hitting the cost cap?"
  • "Should I materialise X?"
  • An endpoint surfaced from auditing-endpoints as a failing materialisation or expensive caller
  • The user has a specific endpoint in mind and wants advice

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