Deedglass

Name: Deedglass
Author: deedglass

by deedglassversion 0.15.0i★ 7iRuns on your computer

Registry nameio.github.deedglass/deedglass

How to install

What it does

Deedglass lets rules decide each AI agent tool call, checks what really changed and seals a record.

Connects Runs on your computer
Account or key Needs DEEDGLASS_API_KEY
Category Other

Install

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

Passed 3/3 checks · Runs on your computer · ✓ Commands checked Nov 14, 2026

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Let AI install it

Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Deedglass for Claude on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "deedglass": { "command": "npx", "args": [ "-y", "deedglass", "mcp", "serve" ], "env": { "DEEDGLASS_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For DEEDGLASS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Deedglass tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
Done
Sign up and create a Deedglass key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Deedglass site ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "deedglass": {
      "command": "npx",
      "args": [
        "-y",
        "deedglass",
        "mcp",
        "serve"
      ],
      "env": {
        "DEEDGLASS_API_KEY": "your-value"
      }
    }
  }
}

Paste the key only into the app’s field, never into a chat or to anyone

Done

Quit Claude and open it again
Done
Try it
Use Deedglass and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Deedglass or shows a Deedglass tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

DEEDGLASS_SERVER Your Deedglass server · default http://127.0.0.1:8080

Descriptions are as written by the maker.

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Deedglass yet

Deedglass runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Deedglass

Steps for Claude →You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for Cursor →You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for VS Code →You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time)

B · Others in Other that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Hostinger✓ ChatGPT
World Monitor✓ ChatGPT
Svelte MCP✓ ChatGPT

Works with Claude Code, with some setup first

You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Deedglass for Claude Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user deedglass --env DEEDGLASS_API_KEY=your-value -- npx -y deedglass mcp serve 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For DEEDGLASS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Deedglass tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
Done
Sign up and create a Deedglass key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Deedglass site ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
4
Paste this command and press Enter
```
claude mcp add --scope user deedglass --env DEEDGLASS_API_KEY=your-value -- npx -y deedglass mcp serve
```
Replace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Done
Type /mcp in Claude Code
You should see Deedglass listed as connected
Done
Try it
Use Deedglass and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Deedglass or shows a Deedglass tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

DEEDGLASS_SERVER Your Deedglass server · default http://127.0.0.1:8080

Descriptions are as written by the maker.

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Deedglass for Cursor on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "deedglass": { "command": "npx", "args": [ "-y", "deedglass", "mcp", "serve" ], "env": { "DEEDGLASS_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For DEEDGLASS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Deedglass tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
Done
Sign up and create a Deedglass key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Deedglass site ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Fill in your key
In the Deedglass settings, DEEDGLASS_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Deedglass and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Deedglass or shows a Deedglass tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

DEEDGLASS_SERVER Your Deedglass server · default http://127.0.0.1:8080

Descriptions are as written by the maker.

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a Deedglass key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Deedglass for VS Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "deedglass": { "type": "stdio", "command": "npx", "args": [ "-y", "deedglass", "mcp", "serve" ], "env": { "DEEDGLASS_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For DEEDGLASS_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Deedglass tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
Done
Sign up and create a Deedglass key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
Open the Deedglass site ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Fill in your key
In the Deedglass settings, DEEDGLASS_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Deedglass and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Deedglass or shows a Deedglass tool in the answer, you are connected

1 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

DEEDGLASS_SERVER Your Deedglass server · default http://127.0.0.1:8080

Descriptions are as written by the maker.

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Deedglass💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user deedglass --env DEEDGLASS_API_KEY=your-value -- npx -y deedglass mcp serve

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "deedglass": {
      "command": "npx",
      "args": [
        "-y",
        "deedglass",
        "mcp",
        "serve"
      ],
      "env": {
        "DEEDGLASS_API_KEY": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "deedglass": {
      "command": "npx",
      "args": [
        "-y",
        "deedglass",
        "mcp",
        "serve"
      ],
      "env": {
        "DEEDGLASS_API_KEY": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "deedglass": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "deedglass",
        "mcp",
        "serve"
      ],
      "env": {
        "DEEDGLASS_API_KEY": "your-value"
      }
    }
  }
}

Values you fill in

DEEDGLASS_SERVER env
Your Deedglass server
DEEDGLASS_API_KEY secret required env
An agent key from deedglass init

Descriptions are as written by the maker.

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

At a glance

GitHub stars i: 7
Downloads per weeki: 268/wk
Licence i: Apache-2.0
Connection: Runs on your computer
Transport: stdio
Latest versioni: 0.15.0
Categoryi: Other
Published to registryi: Oct 28, 2026
Code last changedi: Nov 11, 2026
Maker: deedglass
Packages: npm: deedglass
Repo: deedglass/deedglass
Website: deedglass.com
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 16, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account deedglass, which owns the repo
✓ Pass
Still maintained
Code last changed 5 days ago
✓ Pass
Has a licence
Uses Apache-2.0
– 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

Published vulnerabilities (OSV.dev)

No entries on OSV.dev for deedglass@0.15.0

Checks only this package version, not every dependency · checked Nov 15, 2026

What we check → · JSON

Makers: ask for a re-check or report wrong info

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Otheri

More stars than 95% of the other 19950 servers in this category
Published to the registry more recently than 70% of the other 19950 servers in this category
Basic checks equal to or better than 100% of the other 19950 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 Deedglass safe?

It passed 3 of 3 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: DEEDGLASS_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 5 days ago, and the latest version (0.15.0) reached the registry 19 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: World Monitor, openstatus, Oh My Posh Validator, Strata, Jitsu

Similar alternatives

Same category, other makers, commands already checked. Official ones first, then by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

World Monitor

Real-time global intelligence on conflict, markets, energy, trade, shipping and cyber. 97 tools.

by koala73Widely used★ 90.7KUpdated 2 days ago

Runs in the cloud✓ service owner · worldmonitor.app

How to connect

openstatus

Manage monitors, status pages, incidents and maintenances in your openstatus workspace.

by openstatusHQWidely used★ 9.3KUpdated 2 months ago

Runs in the cloud✓ service owner · openstatus.dev

How to connect

Oh My Posh Validator

Validate oh-my-posh configurations and segment snippets against the official schema.

by JanDeDobbeleerWidely used★ 23.8K Stars for the whole repoUpdated 27 days ago

Runs in the cloud✓ service owner · ohmyposh.dev

How to connect

Strata

MCP server for progressive tool usage at any scale (see https://klavis.ai)

by Klavis-AIGrowing★ 5.8KUpdated 14 months ago

Runs in the cloudRepo archived✓ klavis.ai

How to connect

Jitsu

Manage Jitsu data pipelines: destinations, streams, connections, functions, live events.

by jitsucomWidely used★ 5.1KUpdated 4 months ago

Runs in the cloud✓ service owner · jitsu.com

How to connect

World Monitor — Runs in the cloud, nothing to install · No key needed
openstatus — Runs in the cloud, nothing to install · No key needed
Oh My Posh Validator — Runs in the cloud, nothing to install · No key needed
Strata — Runs in the cloud, nothing to install · No key needed
Jitsu — Runs in the cloud, nothing to install · No key needed

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.

Deedglass

Check what your AI agents actually changed.

An agent said it updated 1 row. Postgres changed 301.

Safety for AI agents that work on databases and health records. Rules decide each AI agent tool call;

Deedglass checks what really changed and seals a record. Open source, self-hosted, every feature free.

Start in one command

npx -y deedglass

An app opens in your browser. It runs on your own computer, signed in, with no account, no sign-up and no Docker or database to set up, and nothing is sent to us. Choose who will use it (a clinic, hospital IT, or people building with AI), then connect Claude Desktop, Cursor, VS Code, a record system or a database. You need Node 18 or newer. Read Start here for a short tour, or try it without installing anything at deedglass.com/play.

For developers, three commands:

npx -y deedglass start      # an agent reports 1 row, Postgres changed 301, and it's caught

npx -y deedglass protect # guard Claude Code, Cursor and other coding agents npx -y deedglass help # the eight everyday commands; "help all" lists every command

Without Docker, start plays the same scene inside the binary, every line labelled live or replay, in under 30 s. More: Quickstart · Docs · Policy Generator · Healthcare · Benchmarks · Security · deedglass.com

Found it useful? A star helps other people find Deedglass. To hear about new releases, use Watch › Custom › Releases.

What it does

Deedglass sits between AI agents and the systems they change. Rules decide each tool call, a check compares what the system really changed with what the agent reported (Claimed, Checked or Proven; Matches, Doesn't match or Can't check), and each result is sealed as a signed record anyone can check offline. It can undo the rows an action changed.

A real run of make demo-hero (commit 97a524c, 2026-10-14), each line shown at the time it printed. Source: docs/assets/demo-hero.cast.json , recorded by scripts/demo/capture.mjs and drawn by scripts/demo/cast2svg.mjs ( make demo-svg ).

Install

curl -fsSL https://deedglass.com/install.sh | sh   # macOS and Linux: checks the sha256, copies deedglass into ~/.local/bin

npx -y deedglass help # or run it with no install (Node 18 or newer) npm install -g deedglass # or install it from npm

Other ways	Command
Binaries	archives for macOS, Linux and Windows on the latest release, with `checksums.txt`
Go	`go install github.com/deedglass/deedglass/cmd/deedglass@latest` (the CLI, without the Console)
Docker	build the image from a checkout: `make web-build docker` (tags `deedglass:dev`; Node 24 builds the Console)

The install script downloads the release archive for your platform, checks its sha256 against the release's checksums.txt (and the signature, when cosign is installed), and copies deedglass into ~/.local/bin; read it first: scripts/install.sh. It downloads from a copy of the release on deedglass.com and falls back to GitHub: about 7 s on one network in India, where the GitHub-only install took 81-119 s. A public container image is coming; until it's published, build the image locally as above. Checksums, signatures and SBOMs: docs/INSTALL.md.

Who it's for

Developers with agents on databases. Claude Code, Cursor or your own agent writes to Postgres. Your rules decide each call first, Postgres's change log shows what really committed, and the rows one action changed can be undone after a person countersigns. MySQL and other databases can be checked from a Debezium change feed (docs/WITNESS_DEBEZIUM.md).
Health-tech teams and hospitals on FHIR. The FHIR connector (beta) puts a FHIR R4 server behind Deedglass with SMART Backend Services, reads each write back at the version the server reported, and checks Proven on HAPI FHIR JPA 8.x and Medplum 5.x running on Postgres. See deedglass.com/healthcare and the FHIR benchmark. To see it on synthetic data first, with no Docker and no server, run npx deedglass health pilot (the 15-minute hospital pilot).
Security teams. Lockdown makes every agent write wait for a person, needs two people for high-risk writes and for turning lockdown off, and keeps each agent to one connector (docs/LOCKDOWN.md). Records are signed and anyone can check them offline with deedglass verify.

Project status

Pre-1.0. Every release is in CHANGELOG.md and on the releases page. The deed format is a versioned public spec (spec/), so old records keep verifying.
One maintainer. Deedglass is built by Arjun Prabhakaran in India (GOVERNANCE.md). Replies are best effort (SUPPORT.md).
Free and self-hosted. Every feature is free while we grow, including ee/, and it runs on your machines with your own Postgres. Nothing checks a licence and nothing is sent to deedglass.com (Security).
Not yet: no SOC 2 report, no outside penetration test and no SSO. Known limits are in docs/LIMITATIONS.md and KNOWN_ISSUES.md.

How it works

flowchart LR

A["AI agent Claude · OpenAI · Cursor · any MCP client"] -->|tool call + agent key| R subgraph D["Deedglass · one binary + Postgres"] R["1 · Rules allow · deny · ask a person"] --> X["2 · Run with credentials from the vault"] X --> C["3 · Check what really changed"] --> S["4 · Seal a signed record"] end X --> T["Tools Postgres · FHIR · GitHub · Slack · Stripe · MCP servers"] T -->|change log or read-back| C S --> U["Undo Postgres rows, after a person countersigns"] H[People] -->|approve · stop| R

Every tool call passes through Deedglass with the agent's key. Your rules (policies) decide allow, deny or require_approval; Deedglass runs the call with credentials the agent never holds; the check compares what happened with what was asked; and the outcome is sealed as a record in the org's chain.

How sure each check is

Level	What it checks	What it can't see
Claimed	The tool's own answer, against a schema and your postconditions	Whether the answer is true
Checked	A read-back from the target (GitHub, Slack, Stripe, Notion, REST, Postgres rows)	Side effects the read-back doesn't cover
Proven	Postgres's change log (logical decoding): every row the transaction committed	DDL, sequences, unlogged tables and anything outside that database's WAL

Each record claims one level and one result: Matches, Doesn't match or Can't check. When Deedglass can't tell whether a tool ran, the result is Can't check, never Matches. The API keeps the short names (L0/L1/L2, VERIFIED/MISMATCH/UNVERIFIABLE); the glossary maps them.

The 301-row scene

What an agent reports is not always what the system stored, and a log the agent writes itself can't show the difference. An agent was asked to mark order 42 as shipped. It ran one UPDATE and its tool reported 1 row. A legacy trigger shipped 300 more orders in the same transaction. This is the real output of the Quickstart's last step on 2026-10-14 (shortened where you see …):

$ npx -y deedglass init --trigger

… ✕ UPDATE order 42 Proven · Doesn't match · Postgres changed 301 rows in public.orders. The agent reported 1. expected UPDATE 1 row in public.orders where id = 42 · sets status observed UPDATE 301 rows in public.orders · 300 outside id = 42 … ✓ Trigger off orders_ship_open_batch dropped ✓ Undo preview Undo available · 301 rows in public.orders · 301 updates policy undo-needs-approval · a person countersigns first

The agent's log says 1 row. Deedglass read Postgres's own change log for that transaction, found 301, sealed the difference as a record, and planned an undo from those rows that runs only after a person countersigns.

Quickstart

Docker running with about 2 GiB of free disk, Node 18 or newer, and macOS or Linux, then (from the tested Quickstart). On Windows, npx deedglass runs the native Windows binary, no WSL needed; deedglass init uses Docker on macOS and Linux, so on Windows start with npx deedglass app, which needs no Docker:

mkdir acme-agents && cd acme-agents

npx -y deedglass init --yes npx -y deedglass doctor npx -y deedglass init --trigger

<!-- quickstart:end -->

deedglass init starts two Postgres 18.6 containers in Docker (Deedglass's own database and a demo database), runs deedglass serve on 127.0.0.1:8080, creates an org, an agent and the postgres-check policy (reads and writes run, every write is checked at Proven, DROP and TRUNCATE never run; use postgres-safe in production, where writes wait for a person), and ends with a blocked DROP TABLE and an UPDATE checke

Only the beginning is shown; read the rest in the repo

Deedglass

What it does

Install

Install Node.js (if you don’t have it)

Sign up and create a Deedglass key

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js (if you don’t have it)

Sign up and create a Deedglass key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js (if you don’t have it)

Sign up and create a Deedglass key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js (if you don’t have it)

Sign up and create a Deedglass key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

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Related guides

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

Published vulnerabilities (OSV.dev)

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README from the maker

Start in one command

What it does

Install

Who it's for

Project status

How it works

How sure each check is

The 301-row scene

Quickstart