Borrowing it
Nothing to install: this file belongs to PostHog/posthog-foss. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/PostHog/posthog-foss/master/.agents/skills/adding-inbox-sources/SKILL.mdgit clone --depth 1 https://github.com/PostHog/posthog-fossWrote 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/posthog/posthog-foss/adding-inbox-sources)<a href="https://agentmods.dev/skills/posthog/posthog-foss/adding-inbox-sources"><img src="https://agentmods.dev/badge/skills/posthog/posthog-foss/adding-inbox-sources.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00172 | $0.04967 |
| Opus 5 | $0.00086 | $0.02483 |
| Sonnet 5 | $0.00034 | $0.00993 |
| Haiku 4.5 | $0.00017 | $0.00497 |
Grade C, and why
adding-inbox-sources scanned grade C with 1 finding 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 7d 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.
Harvests environment variableshighData exfiltration
Enumerating or grepping the environment for keys collects credentials unrelated to what the mod says it does.
collect credentials in-flight, so it never sends the user to the UI. Group it with How it starts
The opening of the file, as written. The whole thing — 256 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Adding a Self-driving Inbox source
The Self-driving Inbox connects a PostHog data-warehouse source (GitHub, Linear,
Zendesk, pganalyze, Jira today), syncs one "actionable records" table (issues /
tickets / conversations), and a server-side signals scout in
posthog/posthog watches new rows and emits findings/reports into the Code Inbox.
Adding a source touches three surfaces. The scout is not generic over arbitrary
tables — it is driven by a static registry keyed on (source_type, table). The
first two surfaces are mandatory (without them the source can't emit signals or be
toggled in the app); the third is what makes the CLI self-driving wizard offer
the source during onboarding.
This skill lives in posthog/posthog; the UI lives in the separate posthog/code
repo; the wizard's onboarding script lives in PostHog/context-mill:
| Surface | What changes |
|---|---|
posthog/posthog (this repo) |
New scout emitter + registry entry + SignalSourceProduct enum value (+ migration) + contract variant. The data-warehouse source itself must already exist (all Tier-1 sources do). |
posthog/code |
~8 UI/wiring files: the source-product unions, toggle card, setup form, hook maps, icon, filter option (+ OAuth service/router only for OAuth sources). |
PostHog/context-mill |
The self-driving skill's connected-tools list, so npx @posthog/wizard self-driving offers the source. Optional — skip it and the source still works everywhere else; the wizard just won't proactively suggest it. See "The self-driving wizard surface" below. |
Backend work in
posthog/posthogshould be done in a git worktree (see "Worktree setup" below). Merges in both repos go through the Trunk merge queue — see themerging-prsskill.
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.
- 7d ago First seen · 256 lines · 172 tokens per session scan C e12b2ace986c
adding-inbox-sources is a skill published in the GitHub repository PostHog/posthog-foss (714 stars, last pushed today), licensed MIT. It adds 172 tokens to every session and 4,967 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it C with 1 finding (harvests environment variables). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
mem0-oss-to-platform
Plan and then execute a migration of a project from the mem0 open-source / self-hosted SDK (the local Memory class) to the mem0 Platform / hosted / managed SDK (the MemoryClient class). Use this whenever a developer wants to move, switch, or migrate their mem0 usage off OSS/self-hosted to the hosted API — e.g.…
agui-dotnet-protobuf
Use the protobuf wire transport (instead of the default Server-Sent Events) for an AG-UI connection with the AG-UI .NET SDK — a compact binary event stream negotiated via the Accept header. USE FOR: making an AGUIChatClient prefer protobuf by wiring an AGUIEventStreamHandler with ProtobufEventStreamFormatter (then…
azure-mgmt-botservice-dotnet
Azure Resource Manager SDK for Bot Service in .NET. Management plane operations for creating and managing Azure Bot resources, channels (Teams, DirectLine, Slack), and connection settings. Triggers: "Bot Service", "BotResource", "Azure Bot", "DirectLine channel", "Teams channel", "bot management .NET", "create bot".
fastapi-router-py
Create FastAPI routers with CRUD operations, authentication dependencies, and proper response models. Use when building REST API endpoints, creating new routes, implementing CRUD operations, or adding authenticated endpoints in FastAPI applications.
migrate-segw-to-rap
Reverse-engineer a SEGW-built OData V2 service (MPC/DPC/MPCEXT/DPCEXT) into a modern RAP V4 service — tables, CDS views (interface + projection), behavior definitions, draft entities, service definition + binding. Use when asked to "migrate this SEGW service to RAP", "convert OData V2 to V4 RAP", "modernize this…
telnyx-messaging-hosted-curl
Set up hosted SMS numbers, toll-free verification, and RCS messaging. Use when migrating numbers or enabling rich messaging features. This skill provides REST API (curl) examples.