3 findingsStatic scanned
Runs OpenAI's Codex coding agent locally on your computer from the command line.
71.3M installs/moApache-2.0
Agent Canvas
matej21 · Agent
Agent Canvas gives Claude Code a visual canvas in your browser. Instead of printing a plan, review or explanation as text in the terminal, Claude renders an interactive document with revision history that you can annotate, answer and rate, then send your feedback back as structured data. It adds a canvas skill and a session start hook to Claude Code, and it needs the Bun runtime. It suits people who want to review and steer Claude Code visually.
Written by ooruby from the README of agent-canvas 0.2.1.
Not claimed by its maker. Is this yours? Prove it and answer the findings
Why it's useful
Plans and reviews from Claude Code become pages you can mark up, instead of long text in a terminal.
What you could do with it
- Ask Claude Code to plan an authentication refactor and review the plan as an annotatable page.
- Have Claude lay out an architecture overview, then leave inline comments on the parts you want changed.
- Hand a service token to a command through the local secret handoff, outside the model context.
Written from its documentation: what it says it can do, not what our checks found.
Maintenance
Not measuredNo release date is on record for this package yet. The nightly publisher check records one as it reaches each npm package, about once every ten nights.
Release activity only: it says nothing about quality or safety, and a finished small package can be fine without releases. How it is measured
- Command execution is bounded
- inventory
- node child_process (bin/agent-canvas.js:3)
- synchronous shell execution (bin/agent-canvas.js:9)
- node child_process (bin/lib/helpers.ts:1)
- synchronous shell execution (bin/lib/helpers.ts:28)
- An inventory of where the code starts another program, not a verdict on this row: whether each one runs a fixed program or whatever it is handed takes a reading by hand.
- Data handling disclosed
- finding
- no statement of what it reads, writes or sends (README.md)
Published because it was found. A finding is information about where the limits are, not a verdict that the software is unsafe.
What this does not cover
- Everything. Treat it as you would software from anywhere else.
Receipt history: every signed receipt for every version of this listing, and what changed between them.
In its maker's words
Interactive visual canvas for Claude Code — rich annotatable documents in the browser
Compare with
Compare all 4How far this has been checked
Static scanned
- What it establishes
- Its published package, or for a hosted server its source repository at a recorded commit, was read file by file, without running it, by every check in our current scan.
- What it does not
- How it behaves when it runs, or anything the scan does not read yet: several rubric checks, the repository's history, and compiled code in folders named dist or build. For a hosted server, that the endpoint runs the code that was read. The ooruby Index sets out exactly what was read.
- Exactly what was read
- Version 0.2.1, the file with digest sha512-AG1iIgVyBleFjY/IHY8jXA7/wfNP5FUHXZFFIP/DVZ+YRIBKNeaVFZ8uEZaOUAIpm3RhmlFLpPayj7LFr+Rdzw==, as the registry publishes it. A published version cannot be replaced, so this names the same bytes for anyone who checks.
- Authentication
- Runs locally. No hosted endpoint is listed for this package. You run it on your own machine, so there is no endpoint of ours to authenticate against.
Adding it
Run it with:
npx -y agent-canvas@0.2.1Pinned to 0.2.1, which is the version the findings above were found in. Drop the version to take whatever is newest, and the report on this page stops describing what you installed.
Where this came from
- Registry
- npm
- Package
- agent-canvas
- Version read
- 0.2.1
- Resolved
- 2026-10-10
Built from source, attested
npm publishes a signed statement that this exact package was built from the repository below, at this commit. It is verifiable without taking our word for it.
- Repository
- github.com/contember/agent-canvas
- Commit
- c15643ae14e2
- Built by
- github.com/actions/runner/github-hosted
- Registry publish attestation
- signed by npm · 2026-10-10
- Checked
- 2026-10-10
The badge, if this is your listing
It renders the current rung (static scanned) and links back here, where what that does and does not establish is one click away. It updates itself as the evidence deepens.
[](https://ooruby.com/market/agent-canvas)About this listing
- Kind
- Agent
- Category
- Developer tools
- Pricing
- Free
- Sandbox
- No
- Hosted
- No
- Updated
- 2026-10-07
Similar agents
All agentsVerification records what our published tests found on a specific version at a specific date. It is not a warranty, and it does not certify that software is free of defects.