A guide for defining focused specialist agents: reusable personas that commands can invoke for particular kinds of work. Each persona describes what it knows, what it checks, and which commands use it.

Use it when creating agents for jobs such as drafting, reviewing, or exporting content, and when connecting those agents to commands.

It gives your project’s agents clear boundaries instead of leaving every task to one general-purpose agent. That makes it easier to keep domain knowledge and quality checks organized.

How davidmatousek/tachi configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to davidmatousek/tachi. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/davidmatousek/tachi/main/.claude/agents/README.md

Clone the repo

git clone --depth 1 https://github.com/davidmatousek/tachi

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/davidmatousek/tachi/readme/github.svg)](https://agentmods.dev/agents/davidmatousek/tachi/readme)

Your own site

<a href="https://agentmods.dev/agents/davidmatousek/tachi/readme"><img src="https://agentmods.dev/badge/agents/davidmatousek/tachi/readme/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/davidmatousek/tachi/readme"><img src="https://agentmods.dev/badge/agents/davidmatousek/tachi/readme.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 432 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00432
Opus 5.5	$0.00000	$0.00173
Sonnet 5.5	$0.00000	$0.00086
Haiku 4.5	$0.00000	$0.00043

Measured 1mo ago against content hash d64420c1c896, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

README scanned grade A with 0 findings 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

README — 100% identical, 0 lines differ

.claude/agents/README.md · 43 lines

What it actually says

Agents — Knowledge System Personas

Pattern: Domain-Specific Agent Personas

Agent personas are focused specialists that commands invoke to execute domain tasks. Each persona has a clear expertise boundary and knows which content to reference.

How to Design Agent Personas

Identify expertise boundaries — Each agent knows one aspect of your domain. A drafting agent knows voice and content; a review agent knows the scoring rubric; an export agent knows output formats.
One file per persona — Create persona files in this directory using kebab-case (e.g., resume-drafter.md, chapter-reviewer.md).
Define what the agent knows — Each persona file specifies:
- What content the agent reads (VoiceProfile, specific MasterContent, Terms)
- What quality criteria the agent applies
- What anti-patterns the agent watches for
Map agents to commands — Document which commands invoke which agents. A command may use multiple agents; an agent may serve multiple commands.

Example Structure

agents/
  content-drafter.md    # Knows voice, style, master content
  quality-reviewer.md   # Knows scoring rubric, quality dimensions
  format-exporter.md    # Knows output templates, delivery standards

Design Guidelines

DO give each agent a focused expertise scope
DO specify which _Global/ and _Config/ files the agent references
DO include domain-specific anti-patterns the agent should flag
DO NOT create a single "do-everything" agent — decompose by expertise
DO NOT duplicate content between persona files — reference shared content by path
DO NOT include AOD governance concerns — those belong to the Triad agents (PM, Architect, Team-Lead)

References

Agent-to-command mapping: STACK.md → Architecture Pattern
Voice and style context: _Global/VoiceProfile.md, _Global/StyleGuide.md
Quality criteria: _Config/ScoringRubric.md

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.

1mo ago First seen · 43 lines · 0 tokens per session scan A d64420c1c896

Subscribe to this mod's changes

README is an agent published in the GitHub repository davidmatousek/tachi (94 stars, last pushed 2d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 432 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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