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Updated 4mo ago

by len5ky

synth-personas

Codex CLI + Claude Code skills (and a TypeScript CLI) that fan out parallel LLM calls across ~150 curated personas — VCs, billionaires, tech media, scientists, dev audiences — to score a pitch deck or design doc and aggregate the feedback into one report.

Works with
  • Claude
  • Codex
View on GitHub (opens in a new tab)

40 GitHub stars (40)

+1 in 16 days

Stars gained per day · daily snapshots since Sep 30
Stars gained per day, Sep 30 to Oct 16: +1 in total; the busiest day was Oct 10 with +1 stars.Oct 1: 0 starsOct 2: 0 starsOct 3: 0 starsOct 4: 0 starsOct 5: 0 starsOct 6: 0 starsOct 7: 0 starsOct 8: 0 starsOct 9: 0 starsOct 10: +1 starsOct 11: 0 starsOct 12: 0 starsOct 13: 0 starsOct 14: 0 starsOct 15: 0 starsOct 16: 0 stars
Stars gained between daily snapshots
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  • 2 skills (2 skills found in its SKILL.md files)
  • 6 forks (6 forks)
  • 4mo ago last update (Last updated 4mo ago)

Install

Skills CLI

npx skills add len5ky/synth-personas

Asks which skills and agents to install. Just one: npx skills add len5ky/synth-personas --skill create-persona — add -g for every project.

Claude Code

git clone https://github.com/len5ky/synth-personascp -r "synth-personas/skills/create-persona" ~/.claude/skills/

Copies the create-persona skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.

Plugin

/plugin marketplace add len5ky/synth-personas

Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.

Skills can run code on your machine — read the SKILL.md first.

What it does

In the author's own words, from each skill's SKILL.md.

  • create-persona

    Author a new synth-personas persona profile end-to-end: pick the slot, research from primary 2024–2026 sources, write the 9-section body with traceable verbatim quotes, validate via the CLI, and update the index. TRIGGER when the user asks to "add a persona", "create a persona for X", "write up X as a persona", or "add N more VCs/founders/investors/journalists" to the library. DO NOT trigger for:…

    skills/create-persona/SKILL.md on GitHub (opens in a new tab)

  • synth-personas

    Generate synthetic-persona feedback on an artifact (pitch deck, doc, design proposal, white paper) by fanning out parallel OpenRouter LLM calls — one per persona — against a curated set of ~80 persona profiles (tech billionaires, VCs, tech media, podcasters, scientists, public intellectuals, developer audiences). TRIGGER when the user wants reactions "from a panel of", "as if from VCs/billionaire…

    skills/synth-personas/SKILL.md on GitHub (opens in a new tab)

Review before you install

A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.