writ

Name: writ
Author: withwrit

by withwritversion 0.2.0i★ –iRuns on your computer

Registry nameio.github.withwrit/writ

Install

Overview

Description from the maker (original English)

Policy checks for AI agent writes (ALLOW/DENY/STEP_UP) with a tamper-evident audit log.

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: WRIT_API_KEY, WRIT_SPONSOR_TOKEN

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: WRIT_API_KEY, WRIT_SPONSOR_TOKEN, WRIT_BASE_URL

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": {
    "writ": {
      "command": "uvx",
      "args": [
        "writ-mcp"
      ],
      "env": {
        "WRIT_API_KEY": "your-value",
        "WRIT_SPONSOR_TOKEN": "your-value",
        "WRIT_BASE_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add writ --env WRIT_API_KEY=your-value --env WRIT_SPONSOR_TOKEN=your-value --env WRIT_BASE_URL=your-value -- uvx writ-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": {
    "writ": {
      "command": "uvx",
      "args": [
        "writ-mcp"
      ],
      "env": {
        "WRIT_API_KEY": "your-value",
        "WRIT_SPONSOR_TOKEN": "your-value",
        "WRIT_BASE_URL": "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": {
    "writ": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "writ-mcp"
      ],
      "env": {
        "WRIT_API_KEY": "your-value",
        "WRIT_SPONSOR_TOKEN": "your-value",
        "WRIT_BASE_URL": "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

WRIT_API_KEY secret required env
Writ API key (get one free at https://withwrit.com)
WRIT_SPONSOR_TOKEN secret env
Writ sponsor token, only required for sponsor tools (grant, revoke, reinstate)
WRIT_BASE_URL env
Optional custom Writ API base URL (default: https://api.withwrit.com)

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 withwrit, 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 32380 servers in this category
Published to the registry more recently than 89% of the other 32380 servers in this category
Basic checks equal to or better than 100% of the other 32380 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 writ 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: WRIT_API_KEY, WRIT_SPONSOR_TOKEN

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 (0.2.0) reached the registry 3 days ago.

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, Dechonet MCP

Alternatives

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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.

writ-mcp

The Writ gate as an MCP server. Give any MCP-compatible agent point-of-action control: the agent calls Writ before a consequential write, gets back ALLOW, DENY, or STEP_UP, and every outcome creates an audit receipt.

Install

pip install writ-mcp

Requires Python 3.9+. Installs the writ-mcp command (stdio transport).

Configure

export WRIT_API_KEY="writ_..."        # required; get one free: POST /v1/keys with an email

export WRIT_SPONSOR_TOKEN="..." # only for sponsor tools (grant, revoke, reinstate)

export WRIT_BASE_URL="..." # default: https://api.withwrit.com

Add to your agent

Claude Code:

claude mcp add writ --env WRIT_API_KEY="$WRIT_API_KEY" -- writ-mcp

Claude Desktop (claude_desktop_config.json):

"mcpServers": { "writ": { "command": "writ-mcp", "env": { "WRIT_API_KEY": "writ_..." } } } }

Any MCP client (generic stdio config):

"command": "writ-mcp", "env": { "WRIT_API_KEY": "writ_...", "WRIT_SPONSOR_TOKEN": "writ_sp_..." } }

Hermes (NousResearch/hermes-agent) catalog entry — once published, this package is installable from the optional-mcps catalog:

hermes mcp install writ

The check-before-write loop

The tool descriptions teach the agent this flow, but the short version:

writ_check(sponsor_id, agent_id, verb, target, purpose) — before the write.
ALLOW → you get a 90-second authToken bound to that exact write.
writ_verify_token(auth_token, verb, target, purpose) — immediately before executing, to prove the authorization still matches what you're doing.
DENY → do not proceed. STEP_UP → a human sponsor approves (via writ_grant or the dashboard), then check again.

Tools

Tool	Who	What
`writ_check`	agent	Decision + 90s purpose-bound token
`writ_verify_token`	agent	Point-of-action token verification
`writ_grant`	sponsor	Approve a STEP_UP (one-time grant)
`writ_revoke` / `writ_reinstate`	sponsor	Kill switch on/off for a principal
`writ_receipts`	agent	Audit trail of decisions
`writ_policy`	agent	Tenant verb policy
`writ_sandbox`	anyone	Free 90-second demo grant, no key needed
`writ_github_installations`	admin	List connected GitHub App installations
`writ_github_set_threshold`	admin	Set the check-run fail threshold per install
`writ_github_toggle_pr_comments`	admin	Enable/disable the PR-comment bot
`writ_manifests`	agent	List repos with risk profiles or fetch one manifest
`writ_explain_receipt`	agent	Explain a receipt in plain language
`writ_tenant_notify`	admin	Get or update step-up notification settings
`writ_principals`	admin	List the tenant's principals
`writ_verbs`	admin	List the tenant's verb vocabulary
`writ_keys`	admin	List API key metadata

Try it with no key: writ_sandbox → writ_check with verb="demo_write".

Source

Public repo: withwrit/pywrit (mcp/ directory). License: MIT.

Directory listings: Glama · MCP Registry io.github.withwrit/writ.

writ

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

Dechonet MCP

README from the maker

writ-mcp

Install

Configure

export WRIT_BASE_URL="..." # default: https://api.withwrit.com

Add to your agent

The check-before-write loop

Tools

Source