Is Prism safe and trustworthy?

tashan scores Prism on public evidence — tashan score 69.0/100, it is currently active, note: a single primary maintainer (bus-factor risk), no known advisories against the current release, it runs a script at install time. Audit scope: OSV advisories, install-time scripts, build provenance and declared permission surface. We do not review source code or execute the capability.

How do I install Prism?

In Claude Code: run `claude mcp add prism-mcp-server -- npx -y prism-mcp-server`. In Cursor / Claude Desktop, add it to mcp.json / claude_desktop_config.json.

‹ The Index

Prism

npm

Session memory for coding agents: local-first recall, drift detection, on-device inference.

Works with: Claude Code, Cursor, Claude Desktop, Codex CLI, Gemini CLI, Cline, Windsurf, VS Code (installable)
installable: each client documents how to load an MCP server of this type — that is the client's promise, not a claim verified against this capability

Category: Dev Tools & CI — see all ranked ›

Install (Claude Code):

claude mcp add prism-mcp-server -- npx -y prism-mcp-server

deep

“11 tools documented (query_memory_natural, prism_infer…); 15 worked examples; setup and auth covered; states a limit — “cannot be applied now fails loudly”; read with 1 linked doc(s)”

This grade is wrong ›

tashan score: 69.0
Instruction depth: 89.0 (deep — documents every tool, with worked examples, setup and a stated limitation)
Adoption: 1.6k/wk
Upkeep: 72.0
Freshness: 96.0
Evidence coverage: 100% of the inputs this score can use
Health: active
License: Apache-2.0

Security audit

Every finding is shown in full — which advisory, the version that fixes it, and the exact command run at install time. Nothing in this audit is behind a licence.

No known advisoriesclearchecked against OSV for 20.12.1 — this package, not its dependency tree

Runs a script at install timecodenode -e "import('./dist/postinstall.js').catch(()=>{})"

No access inferred from declared dependenciesnothing it depends on reaches files, shell or network. This reads declarations only — built-in APIs are invisible to it, so absence of a declaration is not absence of access

Signed build provenancepublished from public CI with an attestation

What changed recently

2026-08-14 prism-mcp-server now runs a script when it installs Install-time code executes on your machine before you have used the tool once, and it did not do this before.
2026-08-13 prism-mcp-server published 20.10.0, was 20.6.0 A new release is available.
2026-08-14 prism-mcp-server published 20.12.1, was 20.11.1 A new release is available.

You are reading this because you came looking. tashan Pro gives tashan doctor the history behind it, so a run over your own config says which of YOURS moved.

You searched for one. Check the rest of your stack:

npx tashan-cli doctor

Reads the config already on your machine and names what is dead, deprecated or running code at install time. No account, nothing uploaded.

tashan Pro$6/mo

We recorded 4 changes to Prism in the last 45 days. Pro tells you on the day — for the servers in your own config, not the ones you thought to look up.

Every score since we started measuring, for any capability
The named replacement when something you run is dying — not just that it is
tashan doctor over the config you already have, on your machine

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npm ↗ · source ↗ · pkg:prism-mcp-server

Already running this? npx tashan-cli doctor checks your whole config against the Index — how it works ›

Measured 2026-08-16 · scorer s5 · how · something wrong here?