Inspectrum MCP Server

Claude plans it. GPT reviews it. You approve it. A plausible plan can commit an agent to a migration, authentication change, payment flow, compatibility break, or deployment that is expensive to undo. It runs locally over stdio via the published package.

People who work with coding agents, multi llm and openai codex and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-12 · ★ 2 · #114 OF 229 MAINTAINED CODING AGENT · VERIFIED 2026-09-18

MIT · TypeScript servers · how we verify → /methodology

01 · Install Inspectrum

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add yannmenec-inspectrum -- npx -y inspectrum

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "yannmenec-inspectrum": {
      "command": "npx",
      "args": [
        "-y",
        "inspectrum"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package inspectrum - unscoped; check the name against the project README before installing

registry namespace io.github.yannmenec is GitHub-verified and matches the repo owner

03 · What Inspectrum can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.2.3 · 2026-08-01

Highlights · Detect active Claude Code plugin/package version drift in inspectrum doctor. · Align npm, Claude plugin, Codex plugin, MCP Registry, and bundled MCP configuration on 0.2.3. · Reposition Inspectrum as an…

v0.2.2 · 2026-07-30

Inspectrum 0.2.2 · Inspectrum turns ad-hoc second opinions into a repeatable plan-review checkpoint · between coding agents. Reviews stay attributed, failures remain visible, and the · user keeps final approval.…

v0.2.1 · 2026-07-14

A hardening release closing the deferred findings from the pre-0.2.0 Codex GPT-5.6 review, each re-verified by an independent multi-LLM review pass before merge. No new features; the review_plan tool and the…

04 · Who maintains Inspectrum

Inspectrum is maintained by yannmenec. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository
github.com/yannmenec/inspectrum
website
https://github.com/yannmenec/inspectrum/blob/main/docs/claude-code-codex-plan-review.md
category
coding agent - ranked #114 of 229 actively-maintained coding agent servers as of 2026-09-18.
release cadence
4 releases in the last 90 days (latest 2026-08-01)
registry
io.github.yannmenec/inspectrum (active, first published 2026-07-30 · 2 versions)
packages
npm:inspectrum

06 · Inspectrum FAQ

What is Inspectrum?

Claude plans it. GPT reviews it. You approve it. A plausible plan can commit an agent to a migration, authentication change, payment flow, compatibility break, or deployment that is expensive to undo. It runs locally over stdio via the published package.

Is Inspectrum still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-12 and it shipped 4 releases in the last 90 days. We re-verify nightly.

How do I install Inspectrum?

Run `npx -y inspectrum`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does Inspectrum run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Inspectrum

Alternatives to Inspectrum

Maintained coding agent servers if Inspectrum isn't the fit.

  1. Serena A powerful toolkit for coding, providing semantic retrieval and editing capabilities. ★ 29,556 · 2026-09-17
  2. Desktop Commander MCP server for terminal commands, file operations, and process management ★ 9,633 · 2026-09-17
  3. Ouroboros Pins an acceptance spec; the verify command and expected output never enter the success contract. ★ 6,016 · 2026-09-15
  4. Socraticode MCP server for enterprise local codebase indexing, semantic search, and code dependency graphs. ★ 3,312 · 2026-09-17
  5. Omnara Deploy durable AI agents with Omnara, an open-source managed-agent platform. ★ 2,858 · 2026-09-18
  6. Docs Search and read Empryo's documentation. Read-only, no auth, no local access. ★ 1,246 · 2026-09-17

Pairs well with

Servers that cover what Inspectrum doesn't - only shown when the pairing reason fits the companion.

  1. Context7 → documentation companion documentation · ★ 62,152
  2. GitLab MCP → documentation companion documentation · ★ 1,984
  3. Xcode Build MCP → developer tools companion developer tools · ★ 6,397
  4. Sentry MCP → developer tools companion developer tools · ★ 855
  5. Server Filesystem → filesystem companion filesystem · ★ 39,038
  6. Pdf MCP → filesystem companion filesystem · ★ 135

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