Agent skill

Session

Extract conversation turns from AI session history files (.jsonl)

AGPL-3.0-or-laterAuto-check passedKnowledge Management

Install Session

skills CLI

$ npx skills add axoviq-ai/synthadoc --skill session -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install axoviq-ai/synthadoc session --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/axoviq-ai/synthadoc.git skills-src && mkdir -p .claude/skills && cp -r skills-src/synthadoc/skills/session .claude/skills/session && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "session" agent skill from https://github.com/axoviq-ai/synthadoc/tree/main/synthadoc/skills/session into .claude/skills/session/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/axoviq-ai/synthadoc/tree/main/synthadoc/skills/session

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add axoviq-ai/synthadoc --skill session -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install axoviq-ai/synthadoc session --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/axoviq-ai/synthadoc.git skills-src && mkdir -p .agents/skills && cp -r skills-src/synthadoc/skills/session .agents/skills/session && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "session" agent skill from https://github.com/axoviq-ai/synthadoc/tree/main/synthadoc/skills/session into .agents/skills/session/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add axoviq-ai/synthadoc --skill session -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install axoviq-ai/synthadoc session --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/axoviq-ai/synthadoc.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/synthadoc/skills/session .cursor/skills/session && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "session" agent skill from https://github.com/axoviq-ai/synthadoc/tree/main/synthadoc/skills/session into .cursor/skills/session/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/axoviq-ai/synthadoc.git --path synthadoc/skills/session

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add axoviq-ai/synthadoc --skill session -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install axoviq-ai/synthadoc session --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/axoviq-ai/synthadoc.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/synthadoc/skills/session .gemini/skills/session && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "session" agent skill from https://github.com/axoviq-ai/synthadoc/tree/main/synthadoc/skills/session into .gemini/skills/session/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install axoviq-ai/synthadoc session

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add axoviq-ai/synthadoc --skill session -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/axoviq-ai/synthadoc.git skills-src && mkdir -p .github/skills && cp -r skills-src/synthadoc/skills/session .github/skills/session && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "session" agent skill from https://github.com/axoviq-ai/synthadoc/tree/main/synthadoc/skills/session into .github/skills/session/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add axoviq-ai/synthadoc --skill session -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install axoviq-ai/synthadoc session --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/axoviq-ai/synthadoc.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/synthadoc/skills/session .opencode/skills/session && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "session" agent skill from https://github.com/axoviq-ai/synthadoc/tree/main/synthadoc/skills/session into .opencode/skills/session/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: session
GitHub stars: 1.6k
Token cost: ~902 tokens
SKILL.md length: 327 words
Files: 4 (incl. scripts)
Skills in repo: 9
Repo updated: Oct 10, 2026
First seen: Oct 7, 2026
Licence: AGPL-3.0-or-later

At a glance

Extract conversation turns from AI session history files (.jsonl)

Knowledge Management work in your project
SKILL.md covers What gets extracted, Output format, suggested_slug and Large sessions — chunking, plus 3 more sections
Runs Python scripts from its folder

What it does

Session is an agent skill from axoviq-ai/synthadoc. Extract conversation turns from AI session history files (.jsonl)

Its SKILL.md is about 900 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including scripts (for example `__init__.py`, `scripts/__init__.py` and `scripts/main.py`).

It sits in Knowledge Management. It works with Obsidian. The repository describes itself as: Synthadoc: An open-source LLM knowledge compilation engine that turns raw documents into structured, local-first wikis. A transparent, human-readable alternative to traditional… The licence is AGPL-3.0-or-later.

When your agent uses it

Knowledge Management work in your project

Example prompts

“/session”

Requirements

Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit 66c9089. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 2 files in scripts/ (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Session loads about 902 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 327 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~18
When it runs · the whole SKILL.md, loaded when a task matches: ~902

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from axoviq-ai/synthadoc at commit 66c9089, republished under its AGPL-3.0-or-later licence (© axoviq-ai). 327 words, ~902 tokens.

Download SKILL.mdSave it as .claude/skills/session/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.

name: session
description: Extract conversation turns from AI session history files (.jsonl)
version: 1.0
entry.script: scripts/main.py
entry.class: SessionSkill
triggers.extensions: .jsonl
triggers.intents: claude session, codex session, cursor session, ai session, session history
author: axoviq.com
license: AGPL-3.0-or-later

Session Skill

Extracts human-readable conversation turns from AI coding session history files (.jsonl). Supports two formats:

Claude Code — the JSONL format written by Anthropic's Claude Code CLI (~/.claude/projects/<hash>/<session-id>.jsonl)
Codex / Cursor — the simpler {"role": ..., "content": ...} per-line format used by OpenAI Codex and Cursor IDE sessions

Format is detected automatically from the first parseable line.

What gets extracted

Only substantive conversation turns are kept:

Content type	Action
User text messages	Kept if ≥ 3 words
Assistant text responses	Kept if ≥ 20 words
Assistant thinking blocks	Skipped (internal reasoning, not final output)
Tool use / tool result blocks	Skipped (avoids leaking file contents or credentials)
Image / attachment blocks	Skipped
Sub-agent scaffolding (`isSidechain: true`)	Skipped (internal sub-agent turns)
Session metadata lines	Skipped (`permission-mode`, `file-history-snapshot`, `system`, `last-prompt`)

The extracted text is then passed through Synthadoc's standard pre-LLM source sanitizer (zero-width characters, bidi overrides, HTML comments, hidden CSS spans, base64 blobs, instruction-override phrases), exactly like PDF, DOCX, URL, and every other source type.

Output format

Each turn is labelled [USER] or [ASSISTANT] and separated by ---:

[USER]
How do I implement a sliding window algorithm?

---

[ASSISTANT]
A sliding window algorithm maintains a contiguous subarray (the "window") …

`suggested_slug`

The skill returns a suggested_slug in metadata derived from the session file's modification time and the first substantive user message:

session-2026-07-15-how-do-i-implement-a-sliding

Large sessions — chunking

Sessions longer than 30 substantive turns are split into 30-turn chunks. Each chunk is labelled with a ## Part N of M header so the downstream LLM can process sections independently. The metadata dict includes chunk_total when chunking occurs; single-chunk sessions (≤ 30 turns) are unchanged.

Limitations

Tool output excluded — tool result blocks (shell output, file reads, etc.) are stripped. This is intentional: it avoids leaking file contents and credentials into the wiki.
Format auto-detection — detection inspects the first 30 parseable lines. Corrupt or empty files produce an empty ExtractedContent.
No deduplication across ingest runs — re-ingesting the same session file creates or updates the same wiki page (standard ingest dedup applies via source hash).

When this skill is used

Source path ends with .jsonl
Intent phrases: "claude session", "codex session", "cursor session", "ai session", "session history"

Standalone usage

python

import asyncio
from synthadoc.skills.session.scripts.main import SessionSkill

skill = SessionSkill()

async def main():
    result = await skill.extract("/path/to/session.jsonl")
    print(result.text)       # [USER]\n...\n\n---\n\n[ASSISTANT]\n...
    print(result.metadata)   # {"format": "claude_code", "turn_count": 42, "suggested_slug": "..."}

asyncio.run(main())

Files

SKILL.md and 3 other files (scripts) in synthadoc/skills/session of axoviq-ai/synthadoc.

SKILL.md
__init__.py
scripts/__init__.py
scripts/main.py

Open the folder on GitHubat commit 66c9089

Compare with similar skills

Session next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Session compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Session this skillaxoviq-ai/synthadoc	1.6k	—	~902	Automated safety check: Pass	AGPL-3.0-or-later	today
Obsidian CLIAtmosphere/atmosphere	3.8k	13 repos	~795	Automated safety check: Pass	Apache-2.0	yesterday
Obsidian Canvas BoardsAgriciDaniel/claude-obsidian	15k	—	~1.4k	Automated safety check: Pass	MIT	1 mo ago
LLM Wikilewislulu/llm-wiki-skill	655	—	~3.7k	Automated safety check: Pass	None	5 mo ago
Second BrainNicholasSpisak/second-brain	737	—	~1.5k	Automated safety check: Notes	None	6 mo ago
Codex History IngestAr9av/obsidian-wiki	3.5k	—	~2.2k	Automated safety check: Notes	MIT	2 days ago

Similar skills

Obsidian CLI
Atmosphere/atmosphere
Interact with Obsidian vaults using the Obsidian CLI to read, create, search, and manage notes, tasks, properties, and more.
3.8k GitHub starsUsed in 13 repos~795 tokens
Knowledge ManagementAuto-check passed
Obsidian Canvas Boards
AgriciDaniel/claude-obsidian
Creates, inspects and updates Obsidian JSON Canvas boards in a vault, with text, file, link, group and edge nodes, using safe recoverable edits.
15k GitHub stars~1.4k tokensUpdated 1 mo ago
Knowledge ManagementAuto-check passed
LLM Wiki
lewislulu/llm-wiki-skill
Build and maintain a Karpathy-style LLM knowledge base — a self-compiling Obsidian markdown wiki where an Agent ingests raw sources, compiles cross-linked concept/entity/summary pages, answers…
655 GitHub stars~3.7k tokensUpdated 5 mo ago
Knowledge ManagementAuto-check passed
Second Brain
NicholasSpisak/second-brain
Set up a new Obsidian knowledge base with the LLM Wiki pattern.
737 GitHub stars~1.5k tokensUpdated 6 mo ago
Knowledge ManagementAuto-check: notes
Codex History Ingest
Ar9av/obsidian-wiki
Ingest Codex CLI conversation/session history into Obsidian as distilled knowledge.
3.5k GitHub stars~2.2k tokensUpdated 2 days ago
Knowledge ManagementAuto-check: notes
Autograph
smixs/agent-second-brain
Schema-as-code enforcement for any Obsidian vault. An agent skill from smixs/agent-second-brain.
393 GitHub stars~3.7k tokensUpdated 2 mo ago
Knowledge ManagementAuto-check passed

Questions about Session

What does Session do?

Extract conversation turns from AI session history files (.jsonl). Session is an agent skill from axoviq-ai/synthadoc.

When should I use Session?

Session fits situations like: knowledge Management work in your project.

How do I install Session in Claude Code?

Run `npx skills add axoviq-ai/synthadoc --skill session -a claude-code`. Or copy the skill folder (synthadoc/skills/session in axoviq-ai/synthadoc) into .claude/skills/session in your project. Claude Code loads it when a task matches its description.

How do I install Session in Codex?

Run `npx skills add axoviq-ai/synthadoc --skill session -a codex`. Or copy the skill folder (synthadoc/skills/session in axoviq-ai/synthadoc) into .agents/skills/session in your project. Codex loads it when a task matches its description.

Can I use Session in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add axoviq-ai/synthadoc --skill session -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/session, .gemini/skills/session, .github/skills/session and .opencode/skills/session in your project.

What does Session need to run?

Going by SKILL.md and its folder, Session needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Session access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Session safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Session use?

Session is published under the AGPL-3.0-or-later licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Session use?

About 902 tokens (SKILL.md is roughly 3.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Session?

Skills that share tags, products or a category with Session: Obsidian CLI (Atmosphere/atmosphere, 3.8k stars), Obsidian Canvas Boards (AgriciDaniel/claude-obsidian, 15k stars), LLM Wiki (lewislulu/llm-wiki-skill, 655 stars) and Second Brain (NicholasSpisak/second-brain, 737 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Session?

axoviq-ai (a GitHub organization) maintains it in axoviq-ai/synthadoc, which has 1,576 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 10, 2026.

Source: axoviq-ai/synthadoc on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Session

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Session Skill

What gets extracted

Output format

suggested_slug

Large sessions — chunking

Limitations

When this skill is used

Standalone usage

Files

Compare with similar skills

Similar skills

More from axoviq-ai/synthadoc

Related

Questions about Session

`suggested_slug`