MCP server: One MCP server.

JAIL Search

@mefenglMCP server · External

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Web searchv1.4.0MITPython
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  1. Reads
  2. Writes
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What it costs

Free

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Tools

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README2 min read

JAIL Search — MCP Server

Status: backend offline.

Install in Cursor Install in VS Code

Search a billion+ documents — papers, books, code, legal cases, forums, Wikipedia, and more.

jail.li

Installation

Connect to the hosted MCP server:

https://api.jail.li/mcp

Get API key for higher limits — append ?jailApiKey= to the URL.

Claude Code
bash
claude mcp add --transport http jail https://api.jail.li/mcp

With API key:

bash
claude mcp add --transport http jail "https://api.jail.li/mcp?jailApiKey=sk_live_..."
Codex
bash
codex mcp add jail --url https://api.jail.li/mcp

With API key: codex mcp add jail --url "https://api.jail.li/mcp?jailApiKey=sk_live_..."

Cursor

Add to ~/.cursor/mcp.json:

json
{
  "mcpServers": {
    "jail": {
      "url": "https://api.jail.li/mcp"
    }
  }
}

With API key: "url": "https://api.jail.li/mcp?jailApiKey=sk_live_..."

VS Code

Add to .vscode/mcp.json:

json
{
  "servers": {
    "jail": {
      "type": "http",
      "url": "https://api.jail.li/mcp"
    }
  }
}

With API key: "url": "https://api.jail.li/mcp?jailApiKey=sk_live_..."

Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

json
{
  "mcpServers": {
    "jail": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://api.jail.li/mcp"]
    }
  }
}

With API key: "args": ["-y", "mcp-remote", "https://api.jail.li/mcp?jailApiKey=sk_live_..."]

OpenCode

Add to your opencode.json:

json
{
  "mcp": {
    "jail": {
      "type": "remote",
      "url": "https://api.jail.li/mcp",
      "enabled": true
    }
  }
}

With API key: "url": "https://api.jail.li/mcp?jailApiKey=sk_live_..."

Copilot CLI

Edit ~/.copilot/mcp-config.json:

json
{
  "mcpServers": {
    "jail": {
      "type": "http",
      "url": "https://api.jail.li/mcp"
    }
  }
}

With API key: "url": "https://api.jail.li/mcp?jailApiKey=sk_live_..."

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

json
{
  "mcpServers": {
    "jail": {
      "serverUrl": "https://api.jail.li/mcp"
    }
  }
}

With API key: "serverUrl": "https://api.jail.li/mcp?jailApiKey=sk_live_..."

Hermes

Add to ~/.hermes/config.yaml:

yaml
mcp_servers:
  jail:
    url: "https://api.jail.li/mcp"

With API key: url: "https://api.jail.li/mcp?jailApiKey=sk_live_..."

Or install the skill: hermes skill install jail-search

Via npm Package

Use the npm/pypi package for stdio transport
json
{
  "mcpServers": {
    "jail": {
      "command": "npx",
      "args": ["-y", "jail-mcp@latest"]
    }
  }
}

Or with Python: "command": "uvx", "args": ["jail-mcp"]

For API key with stdio: "env": { "JAIL_API_KEY": "sk_live_..." }

Tools

ToolWhat it does
searchSearch across all content types. Filter by type, paginate with cursor.
detailGet full metadata for a document by ID.

Content Types

TypeSources
academicOpenAlex, arXiv, Semantic Scholar, DBLP
booksBooks, digital libraries, classical literature
wikiWikipedia — en, zh, de, fr, es, ru, ja, ko + 10 more
forumsHacker News, StackExchange, Lobsters, LessWrong, 60+ more
legalHarvard Case Law, CourtListener, EUR-Lex, UK Legislation
newsNews articles and journalism
packagesnpm, PyPI, Crates.io, Libraries.io
economicsWorld Bank, IMF, FRED, ECB, BLS, Tax Foundation
knowledgeWikidata, structured knowledge
videoIMDb, YouTube
musicDiscogs, MusicBrainz
healthClinical trials, food safety
geoWorld place names, geographic data
techDev.to, product community forums
socialReddit, Mastodon, Lemmy, fediverse
fandomFan wiki articles, community knowledge
cryptoDeFi protocols, token data, on-chain analytics
predictionsPrediction markets, forecasting
audioPodcasts and audio content

License

MIT

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