Codna — repository intelligence

Name: Codna — repository intelligence
Author: thyn-ai

by thyn-aiversion 0.2.106i★ –iRuns on your computer

Registry nameio.github.thyn-ai/codna

Install

Overview

Description from the maker (original English)

Repo intelligence: triage, fix PRs, SARIF reachability, recall. Free codna login to execute.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: ANTHROPIC_API_KEY, OPENAI_API_KEY, GEMINI_API_KEY, GITHUB_TOKEN, CODNA_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: ANTHROPIC_API_KEY, OPENAI_API_KEY, GEMINI_API_KEY, GITHUB_TOKEN, CODNA_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "codna": {
      "command": "uvx",
      "args": [
        "codna",
        "mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value",
        "OPENAI_API_KEY": "your-value",
        "GEMINI_API_KEY": "your-value",
        "GITHUB_TOKEN": "your-value",
        "CODNA_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add codna --env ANTHROPIC_API_KEY=your-value --env OPENAI_API_KEY=your-value --env GEMINI_API_KEY=your-value --env GITHUB_TOKEN=your-value --env CODNA_API_KEY=your-value -- uvx codna mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "codna": {
      "command": "uvx",
      "args": [
        "codna",
        "mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value",
        "OPENAI_API_KEY": "your-value",
        "GEMINI_API_KEY": "your-value",
        "GITHUB_TOKEN": "your-value",
        "CODNA_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "codna": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "codna",
        "mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value",
        "OPENAI_API_KEY": "your-value",
        "GEMINI_API_KEY": "your-value",
        "GITHUB_TOKEN": "your-value",
        "CODNA_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

ANTHROPIC_API_KEY secret env
Provider key for codna_fix's planner — any one of ANTHROPIC_API_KEY (Anthropic), OPENAI_API_KEY (OpenAI/ChatGPT), or GEMINI_API_KEY (Gemini) works (or store one with `codna key set `). Every tool als…
OPENAI_API_KEY secret env
Alternative provider key (OpenAI/ChatGPT) for codna_fix's planner — see ANTHROPIC_API_KEY.
GEMINI_API_KEY secret env
Alternative provider key (Gemini) for codna_fix's planner — see ANTHROPIC_API_KEY.
GITHUB_TOKEN secret env
Write token, only for codna_fix with open_pr=true (opens a pull request) and codna_report_bug (files an issue).
CODNA_API_KEY secret env
Codna key from the one-time free `codna login` (device authorization, free community license). Required to execute any of the five tools; introspection (initialize/tools/list) needs none.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account thyn-ai, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32464 servers in this category
Published to the registry more recently than 98% of the other 32464 servers in this category
Basic checks equal to or better than 100% of the other 32464 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Codna — repository intelligence safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: ANTHROPIC_API_KEY, OPENAI_API_KEY, GEMINI_API_KEY, GITHUB_TOKEN, CODNA_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.106) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, yontu

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Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Codna

Understand. Fix. Evolve.

Agents read your code. Codna understands it.

Codna maps a repository before it spends a token. It then reviews pull requests, fixes bugs and proves which scanner findings are reachable. The same codna command runs on your machine, in the GitHub Action and behind the GitHub App.

Runs on your machine or your cloud. Your code never leaves without your key.

Install

pip install codna          # or: pipx install codna · uv tool install codna

codna --version

Python 3.12–3.13. Wheels for macOS on Apple silicon and Linux x86_64. git on your PATH. Nothing else to install: no Node, Bun, Docker or server. The agent runtime ships inside the wheel.

Local commands need no Codna key. fix and review use your own model provider key, stored in the OS keychain and never printed:

codna key set anthropic    # also: openai, gemini, google, groq, mistral, openrouter, xai, cursor

Commands

codna triage . --issue "checkout total is wrong"     # suspect files. Deterministic. 0 LLM tokens.

codna review . --pr 123 --post # findings with a verdict on the pull request codna fix . --tests --apply --max-iterations 3 # patch, re-run your tests, re-fix until green codna fix --ref --issue "…" --open-pr # push a branch and open a pull request codna secure . --from-sarif results.sarif # which scanner findings are reachable. 0 LLM tokens.

codna fix prints the root cause, the impacted symbols, the blast radius, its confidence and a regression risk. --open-pr needs a git URL and a GitHub write token. codna review posts one inline comment per finding with severity, category and a suggestion block, and an Approve when the diff is clean at medium and high. codna secure reads SARIF 2.1.0 from CodeQL, Semgrep, Snyk, Trivy or any other scanner.

Other commands: init, status, doctor, login, key, impact, memory export, report. Full reference: docs.codna.ai/reference/cli.

MCP server

Run Codna as a Model Context Protocol server over stdio — the same engine the CLI uses, inside Cursor, Claude Desktop, or your own agent:

pipx install "codna[mcp]"       # or: pip install "codna[mcp]"

codna mcp # serve over stdio codna mcp install --client cursor # optional: write the client config for you (or --client claude)

Five tools, each returning JSON; a failure comes back as codna_ error: … text and never crashes the server:

Tool	What it does	Needs
`codna_triage`	Understand a repo and locate the code relevant to an issue. Deterministic, 0 LLM tokens.	free `codna login`
`codna_secure`	Prove which SARIF scanner findings (CodeQL, Semgrep, Snyk, Trivy) are reachable. Read-only, 0 LLM tokens.	free `codna login`
`codna_recall`	Recall code from local on-device memory — semantic + lexical search, fully offline.	free `codna login` (which also installs the on-device runtime)
`codna_fix`	Root-cause and plan a fix (read-only by default); with `open_pr=true` pushes a branch and opens a real PR.	free `codna login` + provider key (BYOK; + `GITHUB_TOKEN` for `open_pr=true`)
`codna_report_bug`	File a bug, feature, or question to thyn-ai/feedback.	free `codna login` + `GITHUB_TOKEN` (else returns a pre-filled URL)

Introspection (initialize/tools/list) needs no credentials. Executing any of the five tools requires the one-time free community login (codna login — device authorization, free community license) — fully offline thereafter. codna_fix additionally needs a provider key (BYOK, e.g. ANTHROPIC_API_KEY); codna_report_bug needs GITHUB_TOKEN or it returns a pre-filled issue URL; codna_recall additionally uses the on-device memory runtime that the same codna login installs. Full reference: docs.codna.ai/guides/mcp.

Code memory

Code memory and recall run on your machine after a one-time free codna login (device authorization), which also installs the signed on-device runtime. From then on, recall runs fully offline: no key, no network calls. The optional codna[memory] extra adds the on-device semantic reranker; without it, recall ranks lexically.

What leaves your machine

Repository mapping, triage, recall and impact run offline. No model is involved.
fix and review send one issue-specific evidence bundle to the provider you chose, under your key. Not the repository.
Secret redaction is always on and cannot be turned off.
privacy.egress: fail-closed in codna.yaml refuses to run tests without network denial and skips registry lookups during review.
Source distributions exclude runtime binaries, keys, .env files and logs.

Codna — repository intelligence

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

yontu

README from the maker

Codna

Install

Commands

MCP server

Code memory

What leaves your machine

Links