debugging-signals-pipeline

debugging-signals-pipeline is a skill for Claude Code, Codex from PostHog/ai-plugin. It costs 89 tokens per session (2,291 once invoked), scanned B, original, no licence file.

A guide for investigating the signals pipeline in a local environment. A signals pipeline moves test events through processing steps and related background workflows.

In plain words
What is it for?
Testing signals from fixtures, monitoring Temporal workflows, reading local agent logs, inspecting Docker sandbox containers, and diagnosing common pipeline failures.
Why use it?
It helps trace failures across signal generation, workflow monitoring, logs, containers, network access, and stored data.

Skill for Claude CodeCodex

Part of the posthog plugin — 137 skills, 3 commands, 1 agent, 2 hooks, 1 MCP server shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/posthog/ai-plugin/debugging-signals-pipeline
Any agent
npx skills add PostHog/ai-plugin --skill debugging-signals-pipeline
Clone the repo
git clone --depth 1 https://github.com/PostHog/ai-plugin

Made for: Claude Code, Codex.

Or install posthog, the plugin that ships this one along with the rest of its 137 skills, 3 commands, 1 agent, 2 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for debugging-signals-pipeline

README.md
[![agentmods](https://agentmods.dev/badge/skills/posthog/ai-plugin/debugging-signals-pipeline.svg)](https://agentmods.dev/skills/posthog/ai-plugin/debugging-signals-pipeline)
Your own site
<a href="https://agentmods.dev/skills/posthog/ai-plugin/debugging-signals-pipeline"><img src="https://agentmods.dev/badge/skills/posthog/ai-plugin/debugging-signals-pipeline.svg" alt="Measured on agentmods" height="20"></a>
Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,291 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00089 $0.02291
Opus 5 $0.00044 $0.01145
Sonnet 5 $0.00018 $0.00458
Haiku 4.5 $0.00009 $0.00229

Measured 5d ago against content hash 54bd3155a1fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

debugging-signals-pipeline scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -s 'http://localhost:8123/' --data-binary \

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s 'http://localhost:8081/api/v1/namespaces/default/workflows?query=ORDER+BY+StartTime+DESC&maximumPageSize=15' \
skills/debugging-signals-pipeline/SKILL.md · 231 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 231 lines · 89 tokens per session scan B 54bd3155a1fc

Subscribe to this mod's changes

debugging-signals-pipeline is a skill published in the GitHub repository PostHog/ai-plugin (80 stars, last pushed 2d ago), with no licence file. It adds 89 tokens to every session and 2,291 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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