A research and editing command for strengthening one note in a personal knowledge vault. It checks how complete the note is, fills important gaps, verifies sources, and moves it forward when ready.

Use it on a named note or let it choose the shallowest inbox note, then research missing context, rewrite the note in the vault's style, and record where the information came from.

It helps turn thin or poorly supported notes into clearer, better-sourced material without requiring the user to decide how much research each note needs.

deepen — Skill for Claude Code by robinslange/learning-loop

Install

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.

Claude Code

/plugin marketplace add robinslange/learning-loop

Claude Code

/plugin install learning-loop

Made for: Claude Code.

Or install learning-loop, the plugin that ships this one along with the rest of its 24 skills, 20 agents, 7 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/robinslange/learning-loop/deepen/github.svg)](https://agentmods.dev/skills/robinslange/learning-loop/deepen)

Your own site

<a href="https://agentmods.dev/skills/robinslange/learning-loop/deepen"><img src="https://agentmods.dev/badge/skills/robinslange/learning-loop/deepen/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/robinslange/learning-loop/deepen"><img src="https://agentmods.dev/badge/skills/robinslange/learning-loop/deepen.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,136 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.

Model	Per session	Once invoked
Fable 5.1	$0.00056	$0.01136
Opus 5.5	$0.00022	$0.00454
Sonnet 5.5	$0.00011	$0.00227
Haiku 4.5	$0.00006	$0.00114

Measured 1mo ago against content hash 0800ed070afc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

deepen 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 1mo 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.

plugin/skills/deepen/SKILL.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Deepen: Research and Enrichment

Overview

Launches the note-deepener agent to strengthen a single note. The agent assesses maturity, researches gaps scaled to need, rewrites in persona voice, verifies sources, and promotes when ready. Shallow notes get heavy research; deep notes get a light touch.

When to Use

/deepen <note-name>: target a specific note
/deepen: no argument; auto-picks the note most in need of work — the shallowest 0-inbox/ note OR a gate-demoted 1-fleeting/ note (verification markers / source: unverified) that has no other resurfacing path
When /inbox flags a note as needing deepening (including the fleeting NEEDS-DEEPEN recommendations)
When a note feels thin and the user wants to strengthen it

Provenance

This skill emits provenance events for pipeline observability. Run each Bash command silently.

At session start:

ll-run provenance-emit.js '{"agent":"deepen","skill":"deepen","action":"session-start","target":"NOTE_FILENAME"}'

At session end. target is a vault path and never exported, so it is dropped here (session-start still carries it, since correlating the run to its note by session_id happens locally, not on the export path). Include the common outcome shape: items_in (1, one note per deepen run), items_out (1 if promoted else 0), items_flagged (0), duration_ms:

ll-run provenance-emit.js '{"agent":"deepen","skill":"deepen","action":"session-end","promoted":true|false,"items_in":1,"items_out":N,"items_flagged":0,"duration_ms":N}'

Per-note tracking is handled automatically by the PostToolUse hook.

Process

Step 0: Parameter Resolution

No argument (/deepen): Run auto-pick immediately (the agent picks the note most in need of work — the shallowest inbox note OR a gate-demoted marker-bearing 1-fleeting/ note — no prompting needed). After presenting results, mention the targeted form in one line:

Deepened [note]. To target a specific note: /deepen "note name".

Read the full file on GitHub · 81 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.

1mo ago Changed 0800ed070afc
1mo ago Changed 0e0e3a054a16
1mo ago Changed · -2 lines 343912fcf653
1mo ago Changed · +2 lines fe45d79242f9
2mo ago First seen · 81 lines · 56 tokens per session scan A a6c5080428d5

Subscribe to this mod's changes

deepen is a skill published in the GitHub repository robinslange/learning-loop (13 stars, last pushed 4d ago), licensed Apache-2.0. It adds 56 tokens to every session and 1,136 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

Research Writing and docs

deepen next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
deepenrobinslange/learning-loop	Skill	13	4d ago	Apache-2.0	A	56	Claude Code
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code