Agent Search MCP
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| LOG_LEVEL | No | Log level (info, debug) | |
| BRAVE_API_KEY | No | Brave Search API key (2000 free/month) | |
| TAVILY_API_KEY | No | Tavily API key (1000 free/month) |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
| resources | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| free_searchA | Search the web with automatic fallback between free and paid engines. Phase 1: DuckDuckGo + Sogou (free, no key required). Phase 2: Brave + Tavily (paid, requires BRAVE_API_KEY / TAVILY_API_KEY env vars). All results are deduplicated, scored, and ranked. |
| free_search_advancedA | Advanced search with filters and quality control. Best for: Date ranges, domain filtering, high-confidence only, Chinese content. Not recommended for: Simple queries — use free_search instead. |
| free_extractA | Extract full content from a URL. Returns clean markdown. Best for: Reading a specific page found in search results. Not recommended for: Bulk extraction — use search first. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
| capabilities | |
| health |
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