Second Brain Chat Import

CommunityPopular

undefined-ui

second-brain-chat-import

Triage an exported chat history into what to ingest, what to archive and what to delete, with a privacy pass first. Use this skill when the user has exported their Claude or ChatGPT history, asks to import old conversations, or asks what in their chat archive is worth keeping. Do NOT use for ingesting a single pasted conversation, or for any material the user has not explicitly asked to bring into the vault.

Overview

Publisher	undefined-ui
Repository	`second-brain-os`
Skill name	`second-brain-chat-import`
Stars	1K
Forks	166
Bundled files	Instructions only
License	MIT
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by undefined-ui on GitHub. Read the source before you install it.

Installation

Install the Second Brain Chat Import AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/undefined-ui/second-brain-os/tree/main/skills/second-brain-chat-import
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/undefined-ui/second-brain-os/tree/main/skills/second-brain-chat-import

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/undefined-ui/second-brain-os.git /tmp/second-brain-os
mkdir -p .claude/skills
cp -r /tmp/second-brain-os/skills/second-brain-chat-import .claude/skills/second-brain-chat-import

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Second Brain Chat Import in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Second Brain Chat Import on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Second Brain Chat Import is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Import chat history

Chat history is the most underrated source a person owns and the most sensitive. It records their reasoning, not just facts, and it also records things they would not want in a file that gets synced, committed and backed up.

Core rule

Privacy pass before triage, triage before ingestion. Never ingest an export wholesale.

Workflow

Convert with scripts/chat_export_to_md.py into one file per conversation, filtering out short exchanges.
Privacy pass. List conversations touching health, money, other people's private information, or confidential work. The user decides; you delete nothing on your own.
Triage the rest into three piles: worth ingesting (they worked something out, decided something, or got an explanation that landed), worth archiving in raw/, and delete.
Report the lists. Move nothing yet.
On approval, ingest the first pile, with the instruction that these are the user's own thinking: build pages around what they were working out and what they concluded, not around the assistant's explanations.

Output format


Converted: <n> conversations (<n> skipped as too short)

Privacy review needed: <n>
  <title> - <why>

Worth ingesting: <n>
  <title> - <what it worked out>

Archive only: <n>
Delete suggested: <n>

Calibration

Expect roughly nine in ten conversations to be throwaway lookups. A triage that recommends ingesting most of the export has not filtered.

Record dates on every page. A position from two years ago is not a current belief, and the vault has to be able to tell the difference.

Frequently asked questions

What does the Second Brain Chat Import AI skill do?

Why use Second Brain Chat Import on TypingMind?

Because you install it once and use it with any model. Second Brain Chat Import is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Second Brain Chat Import in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/undefined-ui/second-brain-os/tree/main/skills/second-brain-chat-import. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Second Brain Chat Import?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Second Brain Chat Import?

As many as you like. As long as a model supports skills, you can use Second Brain Chat Import with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Second Brain Chat Import AI skill free?

Yes. It is published on GitHub by undefined-ui under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Import chat history

Core rule

Workflow

Output format

Calibration

Frequently asked questions

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