Claude Code session

Synthteam

Consult distilled personas of colleagues — build them from Slack history, get one colleague's take, or convene a deliberating panel. A plugin for Claude Code and Codex.

124 stars 8 forksSessions & history Plugin marketplace Source

Install

Inside Claude Code
/plugin marketplace add nickwinder/synthteam

Found in the project README. Check it for setup steps after installing.

From source
git clone https://github.com/nickwinder/synthteam.git

From the README

synthteam (plugin)

A plugin for consulting *distilled personas* of colleagues — locally, without involving them. Useful for pressure-testing plans, anticipating pushback, or stress-testing decisions through someone else's lens.

Personas are simulations, not the real people. Verify anything load-bearing with the real humans before acting on it.

Skills

The plugin has three skills that split into an *ingestion* side and a *consumption* side. distill-slack-persona produces persona docs; ask-colleague and ask-team consume them. Every persona that exists is automatically available to both consuming skills.

distill-slack-persona — build a persona

Turns a colleague's Slack history into a structured persona doc: a natural-language description of *what they know, what they believe, and how they decide*. It dumps their channel messages with a script, then runs a multi-agent pipeline that distills the raw messages into five facets (strategic priorities, specific opinions, decision-making patterns, domain knowledge, and operational context). The doc captures substance, not voice — no verbatim text, no style mimicry. This is the only skill that writes personas; the others just read them. See how to use it below.

ask-colleague — one person's take

Consults a single distilled persona for their likely take, critique, or pushback on an idea — locally, without involving the real person. Use it to pressure-test a plan, anticipate a reaction, or surface the objection you might dodge by not asking. It answers in first-person *as that person would reason*, grounded in their persona doc, and flags when it's extrapolating beyond what the doc covers.
Invoke it: ask alex about , what would alex think of , or /ask-colleague alex …

ask-team — a panel that deliberates

Convenes a simulated…
Read the full README on GitHub

Details

Language
JavaScript
Last updated
18 May 2026

FAQ

What is Synthteam?

Consult distilled personas of colleagues — build them from Slack history, get one colleague's take, or convene a deliberating panel. A plugin for Claude Code and Codex. It is a session for Claude Code, from nickwinder/synthteam on GitHub.

How do I install Synthteam?

Run /plugin marketplace add nickwinder/synthteam inside Claude Code, then follow the setup in the README.

Is Synthteam popular?

nickwinder/synthteam has 124 GitHub stars and 8 forks. It was last updated on 18 May 2026.

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