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.
npx agentmods add rules/posthog/wizard/posthog-integrationgit clone --depth 1 https://github.com/PostHog/wizardWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00316 | $0.00316 |
| Opus 5 | $0.00158 | $0.00158 |
| Sonnet 5 | $0.00063 | $0.00063 |
| Haiku 4.5 | $0.00032 | $0.00032 |
Grade A, and why
posthog-integration scanned grade A with 0 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 2d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
2 near-identical copies found in the catalogue:
- posthog-integration — 100% identical, 2 lines differ
- posthog-integration — 100% identical, 2 lines differ
What it actually says
Never hallucinate an API key. Instead, always use the API key populated in the .env file.
Feature flags
A given feature flag should be used in as few places as possible. Do not increase the risk of undefined behavior by scattering the same feature flag across multiple areas of code. If the same feature flag needs to be introduced at multiple callsites, flag this for the developer to inspect carefully.
If a job requires creating new feature flag names, make them as clear and descriptive as possible.
If using TypeScript, use an enum to store flag names. If using JavaScript, store flag names as strings to an object declared as a constant, to simulate an enum. Use a consistent naming convention for this storage. enum/const object members should be written UPPERCASE_WITH_UNDERSCORE.
Gate flag-dependent code on a check that verifies the flag's values are valid and expected.
Custom properties
If a custom property for a person or event is at any point referenced in two or more files or two or more callsites in the same file, use an enum or const object, as above in feature flags.
Naming
Before creating any new event or property names, consult with the developer for any existing naming convention. Consistency in naming is essential, and additional context may exist outside this project. Similarly, be careful about any changes to existing event and property names, as this may break reporting and distort data for the project.
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.
- 2d ago First seen · 28 lines · 316 tokens per session scan A 9c0eba90b265
posthog-integration is a cursor rule published in the GitHub repository PostHog/wizard (190 stars, last pushed 2d ago), licensed MIT. It adds 316 tokens to every session, about $0.0016 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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