MCP Servers

ax-mcp

Enables HTTP requests and web data extraction via natural language, acting as an AI-era curl.

README

ax-mcp

MCP server for ax — the AI-era curl.

Prerequisites

Install ax CLI:

curl -fsSL https://ax.yusuke.run/install | sh

Usage

Run directly

npx -y github:pyoif/ax-mcp
bunx ax-mcp

Add to MCP client config

Example for ~/.config/claude/claude_desktop_config.json:

{
  "mcpServers": {
    "ax": {
      "command": "npx",
      "args": ["-y", "github:pyoif/ax-mcp"]
    }
  }
}

Or with bun:

{
  "mcpServers": {
    "ax": {
      "command": "bunx",
      "args": ["ax-mcp"]
    }
  }
}

Tools

`fetch`

Fetch a URL — HTTP requests with curl-like flexibility.

Param	Type	Description
`url`	string	URL, file path, or `-` for stdin
`method`	string	HTTP method (GET, POST, PUT, PATCH, DELETE, HEAD)
`headers`	object	Request headers as key-value pairs
`body`	string	Request body (strips CR/LF from @files)
`bodyFile`	string	Read body from file
`dataRaw`	string	Request body literal (never reads @ as file)
`dataBinary`	string	Request body (preserves CR/LF from files)
`user`	string	Basic auth user:pass (-u)
`head`	boolean	Use HEAD method (-I)
`output`	string	Save response to file (-o)
`insecure`	boolean	Allow insecure TLS (-k)
`followRedirects`	boolean	Follow redirects (-L)
`fail`	boolean	Exit 22 on HTTP errors (-f)
`bodyOnly`	boolean	Body only, uncapped (--body)
`showAllHeaders`	boolean	Show all response headers (--headers)
`maxBytes`	number	Max response bytes (default: 20MB)
`timeout`	number	Timeout in seconds (default: 30)

`discover`

Discover page structure.

Param	Type	Description
`url`	string	URL to discover
`mode`	string	`outline`, `locate`, or `count`
`selector`	string	CSS selector (count mode)
`text`	string	Text to find (locate mode)
`fresh`	boolean	Force refetch
`noCache`	boolean	Skip disk cache
`limit`	number	Max results
`all`	boolean	Return all results
`budget`	number	Token budget

`extract`

Extract data using CSS selectors.

Param	Type	Description
`url`	string	URL to extract from
`selector`	string	CSS selector
`mode`	string	`rows`, `table`, `attr`, `text`, `html`, `markdown`
`row`	string	Row mapping (rows mode): `field=sel, field2=sel2@attr`
`attr`	string	Attribute name (attr mode)
`where`	string	Filter expression (rows mode)
`json`	boolean	Output JSON instead of TSV
`limit`	number	Max results
`all`	boolean	Return all results
`budget`	number	Token budget
`fresh`	boolean	Force refetch
`noCache`	boolean	Skip disk cache

License

GPL-3.0

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