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 skills/jacobrask/claude-skills/knowledge-basenpx skills add jacobrask/claude-skills --skill knowledge-basegit clone --depth 1 https://github.com/jacobrask/claude-skillsWrote 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/jacobrask/claude-skills/knowledge-base)<a href="https://agentmods.dev/skills/jacobrask/claude-skills/knowledge-base"><img src="https://agentmods.dev/badge/skills/jacobrask/claude-skills/knowledge-base.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 | $0.00073 | $0.00686 |
| Opus 5 | $0.00036 | $0.00343 |
| Sonnet 5 | $0.00015 | $0.00137 |
| Haiku 4.5 | $0.00007 | $0.00069 |
Grade A, and why
knowledge-base 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 6d 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 — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Knowledge Base
Topic-based collection of curated links and notes at ~/knowledge/.
Structure
~/knowledge/
├── _index.md # Topic listing
├── _inbox.md # Unprocessed items
├── topics/*.md # Articles, concepts, best practices
├── tools/*.md # Software, libraries (organized by use case)
└── archive/YYYY-MM/ # Full article content (link rot protection)
Entry Formats
Topics (articles/concepts):
**[Title](url)** — Author
1-2 paragraph summary focusing on core insights. Be extremely concise, disregard grammar.
Tools (software/libraries):
### [tool-name](url)
**Platform:** macOS / JavaScript / Web Service
**Install:** Installation method
**Use case:** Problem it solves
Brief summary of why it's useful and when to use it.
**Alternatives:** other-tool (tradeoff)
Workflow: Adding from Safari
- Get tabs:
get_tabs.sh markdownorget_tabs.sh -w N markdown - Process in batches of 8-10 to avoid context overflow
- For each batch:
- Fetch content from URLs
- Read existing topic files
- Route to appropriate topic based on content
- Archive substantial/unique articles to
archive/YYYY-MM/ - Items not fitting existing topics →
_inbox.md
- Update
_index.mdwhen done
Routing
Articles/concepts → topics/:
- Match by content, not just title
- Prefer more specific topics
- If unsure, add to
_inbox.mdwith suggested topic - If topic >500 lines or >30 entries, ask user to split
Software/tools → tools/ by use case:
- Libraries, CLI tools, apps, web services all go here
- Articles about tools →
topics/ - Create new use-case files as needed
Quality Control
When bulk adding, pause and ask if you encounter:
- Out of place or low-quality content
- GitHub repos/gists (ask for routing confirmation)
- Failed fetches (summarize at end, ask if should add URL-only)
Archiving
Archive to archive/YYYY-MM/ when:
- Substantial content (>500 words)
- Likely to disappear (personal blogs)
- Unique insights
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.
- 6d ago First seen · 94 lines · 73 tokens per session scan A 2c386932bc9b
knowledge-base is a skill published in the GitHub repository jacobrask/claude-skills (5 stars, last pushed 8mo ago), licensed MIT. It adds 73 tokens to every session and 686 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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../../../engineering/agent-memory/skills/agent-memory/SKILL.md.
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