xkcd-mcp

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📖 Installation Guide — quick start, manual setup, and troubleshooting

MODEL CONTEXT PROTOCOL fine print sold separately

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The part humans read first

xkcd-mcp Comics for your LLM. Official JSON API (/info.0.json), unofficial amount of stick-figure drama.

You get a small Vite dashboard with a comic-panel hero: stick people, a speech bubble that says MCP, explain this, and a box labeled JSON that definitely understands your feelings. The README cant draw SVG, so imagine it badlysame energy as the web app.

Alt text (this repo): A README receives a pull request titled make it whimsical. The CI passes. The narrator questions whether that was ever in scope.

Alt text (the app): A tiny server labeled JSON gets enthusiastic waves while someone negotiates with the universe. Hover tooltips not included; thats what the comic alt is for.

No scraping. No Explainxkcd body fetch. Were not here to parse HTML like its 2003.

Repo: github.com/sandraschi/xkcd-mcp

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Quick Start

git clone https://github.com/sandraschi/xkcd-mcp
cd xkcd-mcp
just

This opens an interactive dashboard showing all available commands. Run just bootstrap to install dependencies, then just serve or just dev to start.

Manual Setup

If you don't have just installed:

Technical details

What it is

• MCP server + HTTP API exposing xkcd metadata and image URLs via the official API and explainxkcd semantic search.
• Web UI calls POST /api/comic with the same operations as the tool (latest, random, by_number, search).

MCP tools

Tool	Description	Arguments
xkcd_latest	Fetch the most recent comic.	None
xkcd_get	Fetch a specific comic by number.	comic_number (int)
xkcd_random	Fetch a random surprise comic.	None
xkcd_search	Search comics by topic (aliens, climate).	query (str)
xkcd_help	Display usage guide and system info.	None

Prefab UI (Rich In-Chat Comics)

When installed with the apps extra and used in a compatible client (Claude Desktop, Antigravity), these tools render a rich PrefabApp card containing:

• The comic image (high-resolution, base64-encoded).
• The comic title and number.
• The alt text directly below the image for context.
• A link to the original xkcd page.

This provides a seamless, visual way to consume comics without leaving the chat interface.

Install

To get started, clone the repository and sync dependencies:

git clone https://github.com/sandraschi/xkcd-mcp.git
Set-Location xkcd-mcp

# Sync all dependencies (v0.2.0)
uv sync

# RECOMMENDED: FastMCP 3.2 Prefab UI support (rich in-chat comics)
uv sync --extra apps

MCP Configuration (Claude / Antigravity)

Add the following to your mcp_config.json (Antigravity) or claude_desktop_config.json (Claude):

{
  "mcpServers": {
    "xkcd": {
      "command": "uv",
      "args": ["--directory", "D:/Dev/repos/xkcd-mcp", "run", "xkcd-mcp"],
      "env": {
        "XKCD_PREFAB_APPS": "1"
      }
    }
  }
}

[!TIP] Ensure the args path matches your actual disk location. Using uv run is the most reliable way to ensure the correct environment and apps extra are loaded.

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Run Manual Start

uv run xkcd-mcp --serve

Item	Value
HTTP	http://127.0.0.1:10778 /health, /docs
MCP	http://127.0.0.1:10778/mcp
Env	XKCD_MCP_HOST, XKCD_MCP_PORT (default 10778), XKCD_MCP_HTTP_PATH (default /mcp)

Run web UI (SPA)

.\web_sota\start.ps1

Or double-click web_sota\start.bat (launches the same script).

http://127.0.0.1:10779/ (same repo root as install)

Fleet docs (LLM index)

• llms.txt short index; llms-full.txt tools, env, ports, troubleshooting.

🛡️ Industrial Quality Stack

This project adheres to SOTA 14.1 industrial standards for high-fidelity agentic orchestration:

• Python (Core): Ruff for linting and formatting. Zero-tolerance for print statements in core handlers (T201).
• Webapp (UI): Biome for sub-millisecond linting. Strict noConsoleLog enforcement.
• Protocol Compliance: Hardened stdout/stderr isolation to ensure crash-resistant JSON-RPC communication.
• Automation: Justfile recipes for all fleet operations (just lint, just fix, just dev).
• Security: Automated audits via bandit and safety.

License

MIT