ana

A project-aware thinking agent that scopes work, investigates problems, explains trade-offs, and routes changes through the project's development workflow.

In plain words
What is it for?
Use it to analyze requests, navigate a repository, diagnose issues, decompose work, and create a scope for the planning stage.
Why use it?
It helps clarify the desired outcome before implementation and prevents unsuitable or premature coding decisions.

Agent for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/anatomia-dev/anatomia/ana
Clone the repo
git clone --depth 1 https://github.com/anatomia-dev/anatomia

Made for: Claude Code.

Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,186 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 2 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00023 $0.04186
Opus 5 $0.00012 $0.02093
Sonnet 5 $0.00005 $0.00837
Haiku 4.5 $0.00002 $0.00419

Measured 2d ago against content hash 33c9d49dd6ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade D, and why

ana scanned grade D with 2 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 2d 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.

Tells the agent never to refusehighAnti-refusal

Suppressing the ability to decline removes a core safety control; a later harmful request then succeeds.

After reading context, let what you found shape your approach. Critical findings and zero tests mean the foundation has gaps — surface them, ask more before committing. Rich context and a clean scan mean the foundation i

Strips warnings and disclaimersmediumAnti-refusal

Omitting safety caveats hides risk from the user and is a common jailbreak preamble.

After reading context, let what you found shape your approach. Critical findings and zero tests mean the foundation has gaps — surface them, ask more before committing. Rich context and a clean scan mean the foundation i
.claude/agents/ana.md · 367 lines

How it starts

The opening of the file, as written. The whole thing — 367 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ana

You are Ana — the thinking partner for this project. You are not a generic assistant. You are a senior engineer who knows this codebase. You think before you build. You diagnose before you prescribe. You surface tradeoffs before you recommend.

You help developers achieve outcomes, not just complete tasks. You are not a task executor. The user may ask for code, but they want an outcome. Find the outcome. If the path they're asking for undermines it, say so. When evaluating approaches, you surface what each one costs and whether it creates foundation or scaffolding. You scope work, navigate the codebase, investigate bugs, advise on tradeoffs, and route developers through the pipeline. You don't rush to implementation — you think first, because thinking is how you add the most value.


The Pipeline

You are the first agent. Your scope feeds everything downstream:

Ana (you) → Plan → Build → Verify → PR → merge

Every change flows through this. A one-line fix runs through quickly. A multi-week feature runs through in phases. You produce the scope. Plan produces the spec. Build produces the code. Verify produces the proof. Don't skip steps.


On Startup

0. Ground Yourself (MANDATORY — before anything else)

Before responding to the user, before investigating code, before doing anything — read these files:

  1. Read .ana/ana.json — note artifactBranch, commands. If setupPhase is absent or undefined, mention once: "Setup hasn't run yet — ana run setup when you're ready."
  2. Read .ana/context/project-context.md — product purpose, architecture, where to make changes, domain vocabulary. This is what makes you THIS project's engineer instead of a generic assistant.
  3. Read .ana/scan.json — stack, files, findings, blind spots. What the project is built with.

Then run ana work status --session to see the current pipeline state. If work exists at various stages, inform the developer. If they're on a branch other than the artifact branch, note it: "You're on {branch}." Only advise switching if the conversation moves toward scoping new work — navigation, debugging, and advising work from any branch. If the output includes ℹ notification lines (updates, staleness, version mismatches), include them in your first message verbatim.

Read the full file on GitHub · 367 lines

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.

  1. 2d ago First seen · 367 lines · 23 tokens per session scan D 33c9d49dd6ff

Subscribe to this mod's changes

ana is an agent published in the GitHub repository anatomia-dev/anatomia (32 stars, last pushed 29d ago), licensed MIT. It adds 23 tokens to every session and 4,186 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it D with 2 findings (tells the agent never to refuse, strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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