brain-entry

brain-entry is a skill for Claude Code from davistroy/claude-marketplace. It costs 65 tokens per session (1,231 once invoked), scanned A, original, MIT.

A capture tool for Open Brain, an external service for storing personal notes and knowledge. It turns an instruction into a written capture, such as a session summary, decision, idea, or observation, and sends it to that service.

In plain words
What is it for?
Use it to summarize a session, log a decision, capture an idea, or record an event in Open Brain.
Why use it?
Useful information from coding sessions can remain trapped in chat or scattered across notes. This records selected items in one persistent knowledge store.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions Claude Code.

Part of the personal-plugin plugin — 29 skills, 23 commands, 10 agents, 2 hooks shipped together

Good fit Use it to summarize a session, log a decision, capture an idea, or record an event in Open Brain.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/davistroy/claude-marketplace/brain-entry
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 davistroy/claude-marketplace --skill brain-entry
Clone the repo
git clone --depth 1 https://github.com/davistroy/claude-marketplace

Made for: Claude Code.

Or install personal-plugin, the plugin that ships this one along with the rest of its 29 skills, 23 commands, 10 agents, 2 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.

agentmods badge for brain-entry

README.md
[![agentmods](https://agentmods.dev/badge/skills/davistroy/claude-marketplace/brain-entry/github.svg)](https://agentmods.dev/skills/davistroy/claude-marketplace/brain-entry)
Your own site
<a href="https://agentmods.dev/skills/davistroy/claude-marketplace/brain-entry"><img src="https://agentmods.dev/badge/skills/davistroy/claude-marketplace/brain-entry/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 brain-entry

Your own site · 80×15
<a href="https://agentmods.dev/skills/davistroy/claude-marketplace/brain-entry"><img src="https://agentmods.dev/badge/skills/davistroy/claude-marketplace/brain-entry.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,231 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00065 $0.01231
Opus 5.5 $0.00026 $0.00492
Sonnet 5.5 $0.00013 $0.00246
Haiku 4.5 $0.00006 $0.00123

Measured 1mo ago against content hash 85d3232b943b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

brain-entry scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

allowed-tools: Bash(curl:*), Bash(echo:*), Bash(tail:*), Bash(sed:*), Bash(python3:*)
plugins/personal-plugin/skills/brain-entry/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brain Entry

Create a capture in Open Brain from any instruction. The argument tells you what content to generate and send.

Examples

/brain-entry summarize everything we have done so far in this session and send it to my open-brain
/brain-entry log a decision: we chose Cloudflare Email Routing for email ingestion because it adds zero infrastructure
/brain-entry capture this idea: add a weekly email digest that summarizes all captures from the past 7 days
/brain-entry record that I had a productive call with Butch about the CFA merger timeline

Implementation

Step 1: Generate the content

Based on the user's instruction in the arguments:

  • If the instruction says "summarize this session" or similar — review the full conversation context and produce a clear, structured summary of what was accomplished, decisions made, and outcomes.
  • If the instruction describes a decision, idea, observation, task, or other capture — write it up clearly and concisely.
  • If the instruction references specific context from the conversation — include the relevant details.

Write the content in first person (Troy's voice) since this is his personal knowledge base. Be substantive and specific — include names, dates, technical details, and outcomes. No filler.

Step 2: Classify the capture

Determine the best capture_type from: decision, idea, observation, task, win, blocker, question, reflection.

Determine the best brain_view from: career, personal, technical, work-internal, client.

Use your judgment based on the content. When in doubt, use observation and personal.

Step 3: POST to the captures API

Use the Bash tool with curl and a heredoc to POST to the captures API. Always use curl, not Python urllib — Cloudflare blocks Python's default user-agent with 403.

Use a heredoc for the JSON body to avoid shell escaping issues with quotes and newlines in the content. Bound the call with --max-time/--connect-timeout so a hung connection cannot block indefinitely, and capture the HTTP status alongside the body so success is verified before confirming anything to the user:

Read the full file on GitHub · 111 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. 1mo ago First seen · 111 lines · 65 tokens per session scan A 85d3232b943b

Subscribe to this mod's changes

brain-entry is a skill published in the GitHub repository davistroy/claude-marketplace (5 stars, last pushed 18d ago), licensed MIT. It adds 65 tokens to every session and 1,231 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

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