signals
How to query the document_embeddings table for raw signal data using HogQL. Use when you need to perform semantic search over signals, fetch every signal that contributed to a specific report, or list signal types. For browsing the curated report layer (the Inbox) — listing reports, filtering by status/source, drilling into a single report by ID — use the `inbox-exploration` skill first; drop into this skill afterwards if the user wants the underlying observations.
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Low
Low-risk findings worth noting
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
W011: Third-party content exposure detected (indirect prompt injection risk).
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
SKILL.md describes querying the `document_embeddings` ClickHouse table for the `content` column (signal text) via the `posthog:execute-sql` MCP tool; since that `content` is sourced from a customer's product data/signals (i.e., not authored by the operating user), it can be outsider free text that the runtime query results then feed into the agent’s LLM context.
- Repository
- PostHog/posthog
- Commit
6fca5f8
- Audited
- Security analysis
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