A single command for saving thoughts, pasted text, article excerpts, transcripts, and other content into a personal knowledge store. It creates both a searchable brain page and a Markdown file, then prints a receipt.

Use it after meetings, research, or conversations when information should become searchable later. Content can be supplied directly, from a file, or through standard input.

It removes the need to choose between several different save and synchronisation commands. Repeatedly saving identical content is handled through duplicate detection.

capture — Skill for Claude Code and Codex by garrytan: A single command for saving thoughts, pasted text, article…

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.

agentmods

npx agentmods add skills/garrytan/gbrain/capture

Any agent

npx skills add garrytan/gbrain --skill capture

Clone the repo

git clone --depth 1 https://github.com/garrytan/gbrain

Made for: Claude Code, Codex.

Or install gbrain, the plugin that ships this one along with the rest of its 19 skills, 2 plugins.

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/garrytan/gbrain/capture.svg)](https://agentmods.dev/skills/garrytan/gbrain/capture)

Your own site

<a href="https://agentmods.dev/skills/garrytan/gbrain/capture"><img src="https://agentmods.dev/badge/skills/garrytan/gbrain/capture.svg" alt="Measured on agentmods" height="20"></a>

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,174 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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	$0.00044	$0.01174
Opus 5	$0.00022	$0.00587
Sonnet 5	$0.00009	$0.00235
Haiku 4.5	$0.00004	$0.00117

Measured 4d ago against content hash 98568ac96331, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

capture 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 4d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

capture — 100% identical, 0 lines differ

plugin/skills/capture/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

capture — the single ingestion entrypoint

When the user wants to save a thought, an article snippet, a transcript fragment, or any text into their brain, run gbrain capture. Don't reach for gbrain put or commit-then-sync — capture is the front door and it handles both local and thin-client installs the same way.

Contract

Input: the content to save (inline arg, --file PATH, or --stdin).
Output: a page in the brain DB AND a markdown file on disk under <sync.repo_path>/<slug>.md. Receipt printed to stdout.
Side effect: the page becomes immediately queryable via gbrain query, gbrain search, or any MCP-bound agent.
Idempotency: same content → same inbox/YYYY-MM-DD-<hash8> slug. The daemon's 24h content-hash dedup catches re-captures.
Trust: all captures via this skill are local-CLI trust (remote: false). Untrusted webhook ingestion goes through POST /ingest, not this verb.

When to invoke

"Capture this thought" / "save this" / "drop this into my brain" / "remember this"
The user pastes content and asks to keep it
After a meeting summary, a research note, or any synthesis that should land as a brain page

What it does

gbrain capture resolves to a put_page call (local) or a remote MCP call (thin-client). Either way the page lands in the DB AND on disk in one move via the v0.38 write-through plumbing. The default slug is inbox/YYYY-MM-DD-<hash8> so captures cluster in a predictable triage location.

How to use

gbrain capture "the thought I want to remember"
gbrain capture --file ./notes/today.md
echo "from a pipe" | gbrain capture --stdin
gbrain capture "..." --slug daily/2026-05-21
gbrain capture "..." --type idea --source voice-whisper
gbrain capture "..." --quiet          # script-friendly: prints just the slug
gbrain capture "..." --json           # structured output for agents

Defaults

Slug: inbox/YYYY-MM-DD-<hash8> (stable for same content; the daemon's 24h dedup catches re-captures).
Type: note (override with --type idea etc.).
Frontmatter stamps: captured_via: capture-cli, captured_at: <ISO>.
Title: first non-empty line of the body, capped at 80 chars (truncation appends …).

Read the full file on GitHub · 106 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.

4d ago First seen · 106 lines · 44 tokens per session scan A 98568ac96331

Subscribe to this mod's changes

capture is a skill published in the GitHub repository garrytan/gbrain (29,440 stars, last pushed yesterday), licensed MIT. It adds 44 tokens to every session and 1,174 once invoked, about $0.0002 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 2026-08-30.

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