Companion is a self-hosted, multi-tenant hub for managing personal and organizational SKILL.md libraries used by coding agents. It is for organizations that need to store, validate, version, share, install, update, and synchronize agent skills, with optional named companions that have persistent workspaces and chats. The catalogue skills, agents, and instructions are resources managed or used within this workflow.
Borrowing it
Nothing to install: this file belongs to The-Vibe-Company/companion. 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/The-Vibe-Company/companion/main/.agents/skills/capture-learning-tools/SKILL.mdgit clone --depth 1 https://github.com/The-Vibe-Company/companionWrote 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/the-vibe-company/companion/capture-learning-tools)<a href="https://agentmods.dev/skills/the-vibe-company/companion/capture-learning-tools"><img src="https://agentmods.dev/badge/skills/the-vibe-company/companion/capture-learning-tools/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/the-vibe-company/companion/capture-learning-tools"><img src="https://agentmods.dev/badge/skills/the-vibe-company/companion/capture-learning-tools.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 | $0.00109 | $0.01601 |
| Opus 5 | $0.00055 | $0.00800 |
| Sonnet 5 | $0.00022 | $0.00320 |
| Haiku 4.5 | $0.00011 | $0.00160 |
Grade A, and why
capture-learning-tools 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 9d 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 — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Engineering Learning Loop
This skill is the prevention layer after technical work. It analyzes the conversation and the repository, then promotes useful lessons into the project itself: agent instructions, tests, CI, scripts, templates, docs, or architecture decisions.
The project is the source of truth. Do not depend on private memory systems, personal vaults, or one agent host. A good outcome makes the repository easier for the next human or agent to work in.
Protected Invariants
- Propose before editing. Apply changes only when the user explicitly asks or the task clearly requests implementation.
- Prefer enforceable safeguards over prose. If a test, script, or CI check can catch the issue reliably, recommend that before adding a reminder.
- Keep non-technical users oriented. Start with a plain-English verdict before technical details.
- Keep instructions portable. Do not hard-code private paths, organizations, account names, secrets, or tool-only assumptions.
- Do not turn every mistake into a rule. Some learnings are one-off judgment calls and should be left manual.
- Never stage, commit, push, create a PR, or change billing-sensitive CI behavior unless explicitly asked.
Reference Routing
Read only what the task needs:
references/conversation-analysis.mdwhen extracting lessons from a conversation, transcript, review, bug, or user correction.references/promotion-matrix.mdfor deciding whether the lesson belongs in instructions, tests, CI, scripts, docs, ADRs, or nowhere.references/agent-instructions.mdwhen changing or proposingAGENTS.md,CLAUDE.md,.claude/rules/, Cursor rules, or other agent guidance.references/ci-policy.mdbefore recommending CI, especially for private repositories, paid runners, long checks, or open-source projects.references/testing-policy.mdbefore recommending regression tests or coverage changes.references/project-memory.mdwhen the repository needs a durable place for decisions, runbooks, templates, or recurring project knowledge.references/cross-agent-linking.mdwhen multiple agent hosts need the same instructions.references/non-technical-mode.mdwhen the user is not clearly technical or asks for a simple explanation.references/examples.mdfor concrete before/after patterns.
What ships with it
14 files 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.
- companion.json 2.3 KB
- evals/evals.json 1.8 KB
- references/agent-instructions.md 2.4 KB
- references/ci-policy.md 3.0 KB
- references/conversation-analysis.md 1.7 KB
- references/cross-agent-linking.md 1.6 KB
- references/examples.md 1.9 KB
- references/non-technical-mode.md 1.2 KB
- references/project-memory.md 1.3 KB
- references/promotion-matrix.md 2.3 KB
- references/testing-policy.md 1.8 KB
- scripts/classify_learning.py 2.9 KB runs code
- scripts/inspect_ci_surface.py 4.5 KB runs code
- scripts/inspect_project_guidance.py 4.5 KB runs code
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.
- 9d ago First seen · 153 lines · 109 tokens per session scan A a15b00a0e484
capture-learning-tools is a skill published in the GitHub repository The-Vibe-Company/companion (2,401 stars, last pushed 3d ago), licensed MIT. It adds 109 tokens to every session and 1,601 once invoked, about $0.0005 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 2026-09-02.
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