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meridian

v0.8.1

Source-grounded Paper Wiki, Lab idea graph, and incremental coding context for Codex.

Codex4 Skills1 MCP serverstdio

By ShawnLicense: MIT0 GitHub starsUpdated 4 days ago

Directory evidence

Runtimes
Codex
Parsed components
5 skill or MCP entries
Source updated
Sep 20, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install meridian for Codex

Installs for the current user
codex plugin marketplace add shawnyin128/meridian
codex plugin marketplace upgrade meridian
codex plugin add meridian@meridian

Paste and run these commands in a terminal with Codex. They add and refresh the meridian catalog, then install this plugin.

Compatibility: the page URL and API slug “meridian-4” remain stable.

  • Codex: meridian-4@agent-plugin-marketplace → meridian@meridian

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/shawnyin128/meridian

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/codex/meridian/.

Plugin files

plugins/codex/meridian/
├── .codex-plugin/plugin.json
├── skills/lab/SKILL.md
├── skills/meridian/SKILL.md
├── skills/meridian-coding/SKILL.md
├── skills/wiki/SKILL.md
└── .mcp.json

Included Skills4

labskills/lab/SKILL.md

Use by default for research and research-development work in a repo with `.meridian/`: run Lab-first preflight, place/ground ideas, maintain approach trees, attach experiment evidence, inject Paper Wiki implementation grounding before coding, and create reusable findings for wiki write-back. Pure mechanical engineering may skip Lab. Do not use for code implementation, debugging, test repair, release, or git convergence; hand those to the normal coding workflow.

meridianskills/meridian/SKILL.md

Use when the user wants to initialize Meridian, check Meridian plugin/core/MCP status, repair setup drift, or migrate local Meridian configuration after a plugin update. Do not use for normal Paper Wiki work or Lab idea-graph work; delegate those to wiki and lab.

meridian-codingskills/meridian-coding/SKILL.md

Use when implementing, debugging, or testing code in a repository connected to a Meridian project. Read the incremental Meridian change cursor first, then expand only relevant project, idea, or Lab-node context.

wikiskills/wiki/SKILL.md

Product-facing entry for Meridian Paper Wiki. Use when the user wants to update the Paper Wiki or use the Paper Wiki for research, coding, paper understanding, retrieval, synthesis, or personalized paper insights.

MCP servers1

meridian-paper-wikistdio
command
python
args
-m meridian.mcp serve
cwd
.

Plugin manifests1

plugins/codex/meridian/.codex-plugin/plugin.json
{
  "name": "meridian",
  "version": "0.8.1",
  "description": "Source-grounded Paper Wiki, Lab idea graph, and incremental coding context for Codex.",
  "author": {
    "name": "Shawn",
    "url": "https://github.com/shawnyin128/meridian"
  },
  "homepage": "https://github.com/shawnyin128/meridian",
  "repository": "https://github.com/shawnyin128/meridian",
  "license": "MIT",
  "keywords": [
    "paper-wiki",
    "grounding",
    "retrieval",
    "context",
    "read",
    "trace",
    "research",
    "mcp",
    "obsidian",
    "lab"
  ],
  "skills": "./skills/",
  "mcpServers": "./.mcp.json",
  "interface": {
    "displayName": "Meridian",
    "shortDescription": "Ground research and coding with Meridian context.",
    "longDescription": "Meridian exposes setup, Paper Wiki, Lab, and coding-context workflows for source-grounded research. Use Paper Wiki to retrieve context, read canonical pages, and trace evidence through the Meridian MCP context/read/trace tools. Use Lab to manage ideas, approach trees, and experiment evidence. During coding, read the incremental project-change cursor first and expand only the relevant project, idea, or research node.",
    "developerName": "Shawn",
    "category": "Productivity",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "defaultPrompt": [
      "Check Meridian setup and MCP readiness.",
      "Use my Paper Wiki to ground this research question.",
      "Read Meridian project changes, then continue this coding task."
    ],
    "brandColor": "#2563EB",
    "composerIcon": "./assets/meridian-mark.svg",
    "logo": "./assets/meridian-mark.svg"
  }
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[meridian on Agent Plugins Marketplace](https://pluginsmp.com/plugins/meridian-4)