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 skills add byaan-ai/byaan --skill posthoggit clone --depth 1 https://github.com/byaan-ai/byaanWrote 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.
[](https://agentmods.dev/skills/byaan-ai/byaan/posthog)<a href="https://agentmods.dev/skills/byaan-ai/byaan/posthog"><img src="https://agentmods.dev/badge/skills/byaan-ai/byaan/posthog/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/byaan-ai/byaan/posthog"><img src="https://agentmods.dev/badge/skills/byaan-ai/byaan/posthog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00015 | $0.02566 |
| Opus 5.5 | $0.00006 | $0.01026 |
| Sonnet 5.5 | $0.00003 | $0.00513 |
| Haiku 4.5 | $0.00002 | $0.00257 |
Grade A, and why
posthog 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 387 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PostHog
Use the PostHog API to query events, run HogQL analytics, and access product data like persons, insights, and feature flags.
Setup Guide
Before using this skill, you need to create a Personal API Key and find your Project ID.
1. Create a Personal API Key
- Open PostHog and click your avatar in the bottom-left corner
- Click "Settings"
- Navigate to the "Personal API Keys" tab
- Click "Create personal API key"
- Give it a label (e.g., "Byaan")
- Configure scopes as described below
- Click "Create key"
- Copy the key (starts with
phx_) - Paste this key in Settings > Skills > PostHog in the app
2. Find Your Project ID
- In PostHog, go to Project Settings (gear icon in sidebar)
- Look at the URL — it contains the numeric project ID:
https://us.posthog.com/project/12345/settings - The number after
/project/is your Project ID (e.g.,12345) - Enter this ID in Settings > Skills > PostHog in the app
3. Required Scopes
When creating the Personal API Key, enable Read access for the following scopes:
| Scope | Access | Purpose |
|---|---|---|
| Query | Read | Execute HogQL queries |
| Event | Read | Access event data |
| Person | Read | Access person/user data |
| Insight | Read | Access saved insights |
| Dashboard | Read | Access dashboards |
| Feature flag | Read | Access feature flag configurations |
| Cohort | Read | Access cohort definitions |
All other scopes can be set to "No access" for maximum security.
4. Base URL (Region)
The default base URL is https://us.posthog.com (US Cloud). If you use a different region:
| Region | Base URL |
|---|---|
| US Cloud | https://us.posthog.com |
| EU Cloud | https://eu.posthog.com |
| Self-hosted | Your custom domain |
How Authentication Works
You do not need to handle authentication manually. When you call execute_skill_api(), the system automatically:
- Retrieves the API key from the configured credentials
- Adds the
Authorization: Bearer <api_key>header - Sends the request with proper content-type headers
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.
- 1mo ago First seen · 387 lines · 15 tokens per session scan A 8158ec21d4b2
posthog is a skill published in the GitHub repository byaan-ai/byaan (97 stars, last pushed today), licensed MIT. It adds 15 tokens to every session and 2,566 once invoked, about $0.0001 per session on Opus 5.5. 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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