Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add a2ngerer/claude_onboarding_agent/plugin install claude-onboarding-agentWrote 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/a2ngerer/claude_onboarding_agent/knowledge-base-setup)<a href="https://agentmods.dev/skills/a2ngerer/claude_onboarding_agent/knowledge-base-setup"><img src="https://agentmods.dev/badge/skills/a2ngerer/claude_onboarding_agent/knowledge-base-setup.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 | $0.00082 | $0.05596 |
| Opus 5 | $0.00041 | $0.02798 |
| Sonnet 5 | $0.00016 | $0.01119 |
| Haiku 4.5 | $0.00008 | $0.00560 |
Grade A, and why
knowledge-base-setup 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 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.
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 — 360 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Knowledge Base Setup
This skill configures Claude to build and maintain a structured, interlinked knowledge base using the Karpathy LLM Wiki pattern. The generated wiki/ is an OKF v0.1 bundle — Google Cloud's Open Knowledge Format, the published, vendor-neutral standard that formalizes the LLM-wiki pattern (a directory of Markdown concept files with YAML frontmatter, cross-linked with standard Markdown links). Conformance keeps the knowledge base portable across any OKF-aware agent or tool, not just Claude.
Handoff context: Read skills/_shared/consume-handoff.md and run it with the handoff block (if any). The helper guarantees the following locals: detected_language, existing_claude_md, inferred_use_case, repo_signals, graphify_candidate. Use detected_language for all user-facing prose; generated file content stays in English.
Existing CLAUDE.md: If existing_claude_md: true, DO NOT overwrite it. Append a new delimited section at the end of the file:
<!-- onboarding-agent:start setup=knowledge-base skill=knowledge-base-setup section=claude-md -->
## Claude Onboarding Agent — Knowledge Base
...generated content...
<!-- onboarding-agent:end -->
If the delimited block already exists from a previous run, replace only the content between the markers; leave the rest of the file untouched. Wrap generated .gitignore entries in # onboarding-agent: knowledge-base — start / — end markers so /upgrade-setup can refresh them non-destructively.
Supporting Files
Read these on-demand at the step that invokes them. Do not read eagerly.
skills/_shared/consume-handoff.md— orchestrator handoff parse + inline fallback (preamble, before Step 1)skills/_shared/offer-superpowers.md— canonical Superpowers opt-in (Step 1)document-skeletons.md— OKF-conformant concept-note / index.md / log.md skeletons, linking rule, type vocabulary, conformance self-check, Obsidian reconciliation (Step 3)skills/_shared/offer-graphify.md— canonical Graphify opt-in (Step 4)
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 360 lines · 82 tokens per session scan A 0847e37f5aa3
knowledge-base-setup is a skill published in the GitHub repository a2ngerer/claude_onboarding_agent (5 stars, last pushed yesterday), licensed MIT. It adds 82 tokens to every session and 5,596 once invoked, about $0.0004 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 2026-08-31.
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