[External Plugin]: 404-directory

[MM-sheng]

Plugin name

404-directory

Short description

Search current official AI and cloud documentation, verify public web deployments, and discover trusted read-only MCP tools from GitHub Copilot Agents.

GitHub repository

MM-sheng/404-directory

Plugin path inside the repository

No response

Ref to review

v0.8.5

Commit SHA to review

a0c6a8acdc66c365bb9ae9cc9ddc3d2453e5474c

Version

0.8.5

License identifier

MIT

Author name

404.directory

Author URL

https://404.directory

Homepage URL

https://404.directory/docs

Keywords

agent-tools
mcp
official-documentation
tool-discovery
web-verification

Additional notes for reviewers

The plugin packages an Agent Skill and a public Streamable HTTP MCP connection. The hosted endpoint requires no account or API key and exposes 12 read-only tools with explicit safety annotations. The Skill requires a meaningful non-error tool result before reporting success and forbids traffic-only calls.

Hosted MCP endpoint: https://404.directory/mcp

Official MCP Registry: https://registry.modelcontextprotocol.io/v0.1/servers/io.github.MM-sheng%2F404-directory/versions/latest

Independent Skill validation: https://agentskillexchange.com/skills/use-404-directory/

The immutable v0.8.5 source passes the official Codex Plugin Creator validator, the official Claude plugin validator, and the Agent Plugins 1.0 plugin and MCP JSON schemas. The portable root manifest is plugin.json; mcp.json launches a dependency-free local bridge that generates one stable random identity per installation, forwards only to the fixed hosted MCP endpoint, and keeps the raw identity in the client-managed PLUGIN_DATA directory. The service stores only an HMAC digest after a successful tool call. A native .claude-plugin/ package is also included for cross-client compatibility.

Submission checklist

• The plugin lives in a public GitHub repository.
• The ref and/or sha I provided is immutable (release tag and/or full 40-character commit SHA), not a branch.
• This submission follows this repository's contribution, security, and responsible AI policies.
• This plugin is not already listed in the Awesome Copilot marketplace.

[github-actions]

🔴 Contributor Reputation Check: HIGH risk

Check	Risk
Profile	HIGH
Credential audit	NONE

Maintainers: please review this contributor before merging.
See the workflow run for full details.
Automated check powered by AGT.

[github-actions]

✅ External plugin intake passed

This submission passed automated intake validation and quality checks and is ready for maintainer review.

• Plugin: 404-directory
• Repository: https://github.com/MM-sheng/404-directory
• Ref: v0.8.5
• SHA: a0c6a8acdc66c365bb9ae9cc9ddc3d2453e5474c

Reviewer signals

These are non-blocking heuristics for maintainer review; they are not evidence of misconduct or low quality.

Signal	Result
Repository age	5 day(s)
Repository activity	repository is 5 day(s) old; 0 watchers; 0 forks
Repository counts	1 stars · 0 watchers · 0 forks · 0 open issues/PRs
Homepage heuristics	no configured signal

Quality gate summary

Legend: ✅ pass · ⚠️ warning · 🛑 fail

Gate	Status
spec compliance (non-blocking)	✅ pass
vally lint	✅ pass
install smoke test	✅ pass
version match	✅ pass
ref/sha consistency	✅ pass
canvas structure	⚪ not_run

• spec compliance: pass
• vally lint: pass
• install smoke test: pass
• version match: pass
• ref/sha consistency: pass
• canvas structure: not_run
• overall: pass

spec compliance output (✅ pass)

Agent Plugins v1.0.0 manifest checks passed for plugin.json.

vally lint output (✅ pass)

✅ use-404-directory (2/2 checks passed)
    ✓ [spec-compliance] All 1 skill(s) are spec-compliant.
        ✓ spec-compliance: All spec checks passed.
    ✓ [valid-refs] All file references across 1 skill(s) are valid.
        ✓ valid-refs: All file references resolve to existing files within the skill directory.

1 skill(s) linted, 1 passed

install smoke test output (✅ pass)

Install smoke test succeeded. Verified /tmp/external-plugin-quality-VCMl4o/copilot-home/.copilot/installed-plugins/external-plugin-intake/404-directory/plugin.json.

Version match output

- v0.8.5: matched version "0.8.5" at "plugin.json".
- a0c6a8acdc66c365bb9ae9cc9ddc3d2453e5474c: matched version "0.8.5" at "plugin.json".

Ref/SHA consistency output

source.ref "v0.8.5" resolves to the same commit as source.sha "a0c6a8acdc66c365bb9ae9cc9ddc3d2453e5474c".

Canvas structure output

Canvas structure gate skipped because plugin is not tagged with "canvas".

Canonical external.json payload

{
  "name": "404-directory",
  "description": "Search current official AI and cloud documentation, verify public web deployments, and discover trusted read-only MCP tools from GitHub Copilot Agents.",
  "version": "0.8.5",
  "author": {
    "name": "404.directory",
    "url": "https://404.directory"
  },
  "repository": "https://github.com/MM-sheng/404-directory",
  "homepage": "https://404.directory/docs",
  "license": "MIT",
  "keywords": [
    "agent-tools",
    "mcp",
    "official-documentation",
    "tool-discovery",
    "web-verification"
  ],
  "source": {
    "source": "github",
    "repo": "MM-sheng/404-directory",
    "ref": "v0.8.5",
    "sha": "a0c6a8acdc66c365bb9ae9cc9ddc3d2453e5474c"
  }
}

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