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debugging-signals-pipeline

Skill

Debug the signals pipeline locally end-to-end. Covers emitting test signals from fixtures, monitoring Temporal workflows via the REST API, reading sandbox agent logs from object storage, inspecting Docker sandbox containers, and diagnosing common failures (stale ClickHouse embeddings, agentsh networ

0DevOps

Install

git clone https://github.com/PostHog/ai-plugin.git ~/.claude/skills/debugging-signals-pipeline

What is debugging-signals-pipeline?

Debug the signals pipeline locally end-to-end. Covers emitting test signals from fixtures, monitoring Temporal workflows via the REST API, reading sandbox agent logs from object storage, inspecting Docker sandbox containers, and diagnosing common failures (stale ClickHouse embeddings, agentsh network denials, inactivity timeouts). Use when a signal isn't reaching the inbox, a signal-report-summary workflow fails, or a sandbox task run times out.

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

~112 tokens of context used while enabled, before you invoke anything

Documentation

README · ~4 min read

Debugging the signals pipeline

Pipeline flow

emit_signals_from_fixture
  → signal-emitter (Temporal workflow)
    → buffer-signals (batches signals, 5s flush timer)
      → safety_filter_activity
      → flush_signals_to_s3_activity
      → signal_with_start_grouping_v2_activity
        → team-signal-grouping-v2 (30s batch collect window)

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