Schema | SearXNG Server

SearXNG Server

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Server Configuration

Describes the environment variables required to run the server.

Name	Required	Description	Default
`HTTP_PROXY`	No	Proxy URL for HTTP requests
`http_proxy`	No	Alternative lowercase version for HTTP requests proxy
`HTTPS_PROXY`	No	Proxy URL for HTTPS requests
`SEARXNG_URL`	No	The URL of the SearxNG instance	http://localhost:8080
`https_proxy`	No	Alternative lowercase version for HTTPS requests proxy
`AUTH_PASSWORD`	No	Password for HTTP Basic Auth when using a password protected SearxNG instance
`AUTH_USERNAME`	No	Username for HTTP Basic Auth when using a password protected SearxNG instance

Capabilities

Features and capabilities supported by this server

Capability	Details
`tools`	{}
`logging`	{}
`resources`	{}

Tools

Functions exposed to the LLM to take actions

Name Description

Name	Description
searxng_web_searchA	Searches the web using SearXNG and returns a list of results, each with a title, URL, and content snippet. CRITICAL: The required parameter name is exactly `query` (not `prompt`, `q`, or any other name). Calls an external SearXNG instance; availability depends on the `SEARXNG_URL` configuration. Use `pageno` to paginate results; combine `time_range` and `language` to narrow scope. To read the full text of a result URL, follow up with `web_url_read`.
web_url_readA	Fetches a URL and returns its text content converted to markdown. Three modes: (1) Full content — omit filtering params; use `startChar`/`maxLength` to paginate large pages. (2) Section extraction — set `section` to return content under a specific heading. (3) Headings only — set `readHeadings: true` to list all headings (mutually exclusive with other filtering params). Returns an error string if the URL is unreachable or content cannot be extracted. Use after `searxng_web_search` to read the full content of individual result URLs.

searxng_web_searchA

Searches the web using SearXNG and returns a list of results, each with a title, URL, and content snippet. CRITICAL: The required parameter name is exactly query (not prompt, q, or any other name). Calls an external SearXNG instance; availability depends on the SEARXNG_URL configuration. Use pageno to paginate results; combine time_range and language to narrow scope. To read the full text of a result URL, follow up with web_url_read.

web_url_readA

Fetches a URL and returns its text content converted to markdown. Three modes: (1) Full content — omit filtering params; use startChar/maxLength to paginate large pages. (2) Section extraction — set section to return content under a specific heading. (3) Headings only — set readHeadings: true to list all headings (mutually exclusive with other filtering params). Returns an error string if the URL is unreachable or content cannot be extracted. Use after searxng_web_search to read the full content of individual result URLs.

Prompts

Interactive templates invoked by user choice

Name	Description
No prompts

Resources

Contextual data attached and managed by the client

Name	Description
`Server Configuration`	Current server configuration and environment variables
`Usage Guide`	How to use the MCP SearXNG server effectively

Server Configuration
Capabilities
Tools
Prompts
Resources

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