Prism
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Prismwhat breaks if I change src/index.ts?"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Prism
Your agent's second pair of eyes. Know before you ship.
Local software intelligence that catches what the agent missed. Prism gives your coding agent the right files before it edits, then flags the code it skipped and the code no test covers. Free, MIT, and it runs on your machine: no account, and your code never leaves it.
Website: prismhq.in · Docs: prismhq.in/docs · Contact: hello@shaileshjha.in
Get started
npm install -g @prismapp/cli && prism install allRun the second command inside your repository. prism install all connects
every agent it finds. Quit the agent and open it again. The first use builds
the index under ~/.prism/. One agent only: pass its name to prism install.
The install records what it wrote in ~/.prism/install.json, and
prism uninstall removes exactly that. A new version is
npm install -g @prismapp/cli then prism upgrade. Memories, receipts, and
habits stay.
Wiring another MCP host by hand? Use this server entry:
{ "mcpServers": { "prism": { "command": "npx", "args": ["-y", "@prismapp/mcp-server"], "env": { "PRISM_EXTRA_TOOLS": "receipt" } } } }Then ask your agent in plain language, for example "what breaks if I change
src/index.ts?" or "review my changes". You never type tool names.
Related MCP server: Repowise
What it does
Prepare, before the agent edits. The files and tests that matter for the task, and the helpers to reuse instead of rewriting.
Match the code, during the edit. Prism points at a file from your repo to copy, so the new code looks like the rest.
Lens review, after. Dev, Architect and QA lenses flag the callers the change left behind and the code no test covers. Add your own with
prism lens.The receipt, when the agent stops. Prism runs the checks the change reaches and gives one verdict:
SHIP,NOT PROVEN(with the cheapest check to prove it) orNO-SHIP.
Nine default MCP tools; more are opt-in through extraTools in
~/.prism/config.json. Full list: MCP tools.
You say | The agent calls |
"What is this repo?" |
|
"I want to change X" |
|
"What breaks if I edit this file?" |
|
"Where is this symbol, who uses it?" |
|
"Review my changes" |
|
"Start my day" (a saved routine) |
|
"Did I break anything?" | the stop receipt, run by the hook |
CLI
Every command answers from the same local index. Highlights:
Command | What it answers |
| The files to open and the helpers to reuse |
| A lens review of a change |
| What depends on a file or symbol |
| Which tests reach a file |
| The last stop receipts |
| Your review lenses and saved routines |
| What is wired, and whether it works |
Full list: CLI reference.
Privacy
Analysis makes no network requests; a trap test suite fails the build if
one appears. The only request Prism makes is a once-a-day update check against
the npm registry, which never relaunches anything and is off with
PRISM_SKIP_SELF_UPDATE=1. → PRIVACY.md · SECURITY.md
Build from source
git clone https://github.com/Shailesh200/prism
cd prism
nvm use # the version in .nvmrc
bun install
bun run build
bun run verify:milestoneSee CONTRIBUTING.md and the changelog.
License
This server cannot be deployed
Maintenance
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