learn

learn is a skill for Claude Code from ivanhoinacki/team-exp-claude-config. It costs 69 tokens per session (3,286 once invoked), scanned A, original, MIT.

A skill for saving development lessons to persistent memory. A learning can be a bug, workaround, recurring pattern, configuration detail, or other useful note.

In plain words
What is it for?
Recording lessons in a long-term vault and keeping a small index of them for later retrieval.
Why use it?
It prevents non-obvious fixes and project knowledge from being forgotten between development sessions.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; reads .claude/ paths.

Good fit Recording lessons in a long-term vault and keeping a small index of them for later retrieval.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ivanhoinacki/team-exp-claude-config/learn
Install

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.

Any agent
npx skills add ivanhoinacki/team-exp-claude-config --skill learn
Clone the repo
git clone --depth 1 https://github.com/ivanhoinacki/team-exp-claude-config

Made for: Claude Code.

Wrote 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.

agentmods badge for learn

README.md
[![agentmods](https://agentmods.dev/badge/skills/ivanhoinacki/team-exp-claude-config/learn/github.svg)](https://agentmods.dev/skills/ivanhoinacki/team-exp-claude-config/learn)
Your own site
<a href="https://agentmods.dev/skills/ivanhoinacki/team-exp-claude-config/learn"><img src="https://agentmods.dev/badge/skills/ivanhoinacki/team-exp-claude-config/learn/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.

agentmods 80×15 button for learn

Your own site · 80×15
<a href="https://agentmods.dev/skills/ivanhoinacki/team-exp-claude-config/learn"><img src="https://agentmods.dev/badge/skills/ivanhoinacki/team-exp-claude-config/learn.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,286 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00069 $0.03286
Opus 5 $0.00034 $0.01643
Sonnet 5 $0.00014 $0.00657
Haiku 4.5 $0.00007 $0.00329

Measured 9d ago against content hash 069031cdeaa7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

learn 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.

skills/learn/SKILL.md · 349 lines

How it starts

The opening of the file, as written. The whole thing — 349 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Phase 0: Vault RAG (MANDATORY, BEFORE any Read/Grep)

You MUST call query_vault(query, service_filter) BEFORE reading codebase files or external sources. This is enforced by hook. No exceptions.


Capture Learning

Save a development learning (bug, workaround, pattern, config, pitfall, architecture decision, tool behavior) to persistent memory so it's available in future sessions.

Working Directories

  1. Vault (source of truth): __VAULT_ROOT__, ALL detailed learnings go here
  2. Memory directory (auto-memory): the path provided by the system prompt's auto memory section (derived from vault path: $HOME/.claude/projects/-<vault-path-sanitized>/memory/). Contains ONLY two files:
    • MEMORY.md, thin index with pointers to vault files
    • pitfalls.md, one-liner gotchas (exception: stays in memory for fast loading)
  3. Codebase: __CODEBASE_ROOT__

CRITICAL RULES:

  • NEVER create any file in the memory directory besides MEMORY.md and pitfalls.md. No feedback_*.md, project_*.md, reference_*.md, or any other .md files
  • ALL detailed content goes to the vault and is referenced from MEMORY.md
  • When writing to MEMORY.md or pitfalls.md, use the memory directory path from the auto memory system (shown in system prompt). Do NOT guess or use wildcards

Phase 0: Detect Learnings

If $ARGUMENTS is provided

Use it as the learning description. Skip to Phase 1.

If invoked without arguments (after /debug-mode, /feature-dev, or conversation)

Scan the recent conversation context for learnable moments:

  • Bug root causes that were confirmed with evidence
  • Unexpected behaviors that took investigation to understand
  • Config or env var discoveries (ports, commands, compatibility)
  • Workarounds applied for known issues
  • Patterns that worked well and should be reused
  • Tool/CLI behaviors that surprised or blocked progress
  • Architecture decisions with rationale worth preserving

Present candidates:

Learnings detected in this session:

  1. [BUG] svc-experiences TypeORM silently ignores WHERE on nullable columns
     Impact: HIGH | Service: svc-experiences

  2. [CONFIG] BigQuery ADC requires gcloud auth before local dev
     Impact: MEDIUM | Service: svc-experiences

  3. [PATTERN] Bulk upsert with ON CONFLICT needs explicit column list
     Impact: MEDIUM | Service: svc-experiences

Save all? Or pick by number (e.g., 1,3)?

Read the full file on GitHub · 349 lines

Changes

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.

  1. 9d ago First seen · 349 lines · 69 tokens per session scan A 069031cdeaa7

Subscribe to this mod's changes

learn is a skill published in the GitHub repository ivanhoinacki/team-exp-claude-config (2 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 3,286 once invoked, about $0.0003 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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