Stitch Slop for Claude Code

Lets Claude work on the embroidery design open in your Stitch Slop browser tab. It can look at it, describe it, change it, and hear you through the app's Talk button. Every change is one undo step in the app, and every answer is the app's own words.

What you need

• Claude Code, and Node.js 18 or newer on your PATH.

• Stitch Slop open in a desktop browser on the same computer. Chrome is tested; Firefox connects the same way; Safari has not been tested.

• macOS or Linux. Windows has not been tested yet.

Related MCP server: claude-discord-mcp

Install

In Claude Code:

/plugin marketplace add StitchSlop/claude-plugin
/plugin install stitchslop@stitchslop

Then start a new session: a plugin's tools arrive with a session, not in the middle of one.

Connect

The first time on a computer:

1. In Stitch Slop, open the ⌁ Agent panel and switch on Enable Agent Connections.

2. Click Copy, and paste the line into Claude Code.

Chrome will ask once whether the page may "access other apps and services on this device". That is this connection, to a small bridge on your own computer: allow it. Firefox doesn't ask.

After that, the computer stays paired. With the switch on, just ask Claude to "connect to Stitch Slop".

Talk to it

In the ⌁ Agent menu, switch on Talk to your agent by voice. Then press Talk (⌥M) and speak. Claude hears you even between turns, and replies in the app, next to the Talk button. Voice needs Google Chrome on a computer.

What it can do

About everything the app's commands cover:

• look at the design, as a picture or as facts;

• select, move, resize and align;

• change stitch types and settings, threads and colours;

• lettering and fonts, patches, sewing order and layering;

• trace a background image into stitches;

• check for stitch problems.

The list comes from the app itself, so it grows as the app does.

Not yet: exporting a machine file, saving, importing a design, and changing the fabric. Do those in the app.

Privacy

The bridge talks only to your own browser tab, over your own computer's loopback. It sends nothing anywhere and has no telemetry. What Claude reads of your design — names, lettering, pictures of it, what you say to it — goes to Anthropic as part of your conversation, as anything you ask Claude about does.

Turning it off

• For now: switch off Enable Agent Connections. Nothing connects while it is off.

• For good, on this computer: delete ~/.stitchslop/pairing.json. The next connection needs the pasted line again.

• The browser's half: clear Stitch Slop's site data in the browser's settings.

• The plugin: claude plugin uninstall stitchslop@stitchslop, or through /plugin in a session.

When it won't connect

Ask Claude. It can see things the app deliberately does not show, such as why a connection was refused, and it knows what each of the panel's status words means. The details are in skills/design/troubleshooting.md.

Security

See SECURITY.md: what the bridge can do on your computer, what limits it, and how to report a problem privately.

Licence

Apache License 2.0. Copyright 2026 William Osman; see NOTICE.

Development

.claude-plugin/plugin.json        the manifest
.claude-plugin/marketplace.json   makes this repo its own marketplace
.mcp.json                         starts the bridge as an MCP server, --lazy
bridge/stitchslop-bridge.mjs      the bridge. Zero dependencies, Node 18+
skills/design/                    how to connect, and how to work on a design
skills/connect/                   /stitchslop:connect [the pasted line]
test/                             the plugin's tests, and a stand-in tab

From a checkout: claude --plugin-dir /path/to/this/repo.

How it fits together

The app owns the design and its commands. The plugin never sees inside them. The tab sends its tool list when it connects, and the bridge carries calls to it and the app's answers back. Nothing here copies or re-describes a command, so the plugin cannot drift from the app. The skill teaches how to read the app's answers and the rules that bite, and defers to the live tool descriptions for everything else.

The bridge implements Stitch Slop's wire protocol 1, published at stitchslop.com/agent. What a plugin changes about that problem:

Tests

npm test                  # the plugin's own tests, on ports 8797-8798 with a temp config dir
node test/fake-tab.mjs    # a stand-in tab: --token or --secret, --utter "…", --voice-on-after N

Protocol conformance is checked by the Stitch Slop app's own suite, which is not public.