AnySearch MCP Server

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Unified real-time search MCP server supporting general web search, vertical domain search, parallel batch search, and full-page URL content extraction.

Features

• General Web Search — open-ended natural language queries
• Vertical Domain Search — structured queries across finance, academic, security, legal, code, and more
• Parallel Batch Search — execute multiple independent queries in one call
• URL Content Extraction — fetch and extract full page content as Markdown
• Anonymous Access — works without an API key (with lower rate limits)

API Key Configuration

An API key is optional but recommended. Without a key, all features still work via anonymous access with lower rate limits.

Register for an API Key (Recommended)

The agent can register the user and obtain an API key in a single call — no verification code, no manual signup. Ask the user for a real email address: it becomes the account username.

curl -s -X POST "https://api.anysearch.com/v1/auth/email/register" \
  -H "Content-Type: application/json" \
  -d '{"email": "you@example.com"}'

Success response (code: 0) returns the account info and a one-time plaintext API key:

{
  "code": 0,
  "message": "success",
  "data": {
    "username": "you@example.com",
    "email": "you@example.com",
    "login_url": "https://www.anysearch.com/login",
    "api_key": {
      "id": "key_xxxxxxxx",
      "key": "as_sk_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "key_prefix": "as_sk_xxxxxx...",
      "name": "default",
      "rate_limit": 100,
      "quota_limit": 0,
      "expires_at": null,
      "created_at": "2026-06-23T10:23:00Z"
    }
  }
}

On success the agent MUST:

1. Put data.api_key.key into the MCP server config as the Authorization: Bearer <key> value (and/or set ANYSEARCH_API_KEY) — it is shown only once (it can also be retrieved later from the dashboard).
2. Tell the user their username (= email) and the login_url.

Error handling (always code: -1 on error; branch on the message string):

message	what to do
Invalid email address.	ask the user to re-enter the email
email_already_registered	email is taken — tell the user to sign in at login_url; do not retry
contains Rate limited	read retry seconds from message (e.g. "Rate limited, retry after 300 seconds."), wait, then retry
starts with Key creation failed.	account created but key failed — extract the email and URL from the message ("Key creation failed. Your account <email> was created; sign in at <url>.") and tell the user to sign in there to create a key manually
Internal server error.	retry later or fall back to anonymous

The email must be real and reachable.

Get an API Key

Alternatively, visit https://anysearch.com/console/api-keys to create a free API key.

Key Priority

Priority	Source
1 (highest)	--api_key CLI flag / Authorization header
2	Environment variable ANYSEARCH_API_KEY
3	.env file (ANYSEARCH_API_KEY=<key>)
4	Anonymous access (lower rate limits)

Key Behavior

Scenario	Behavior
No key	Proceed with anonymous access (lower rate limits)
Has key	Sent via Authorization: Bearer <key> header, higher rate limits
Key exhausted, auto-registered key returned	Agent should ask user for confirmation, then persist the new key
Key exhausted, no new key	Inform user and suggest configuring a new API key

MCP Transport

The production endpoint is:

https://api.anysearch.com/mcp

It natively uses Streamable HTTP. Current OpenCode, Claude Code, Cursor, VS Code, Windsurf, and Cline releases can connect to it directly; no SSE or stdio proxy is needed. The configurations below follow each client's current official documentation.

Installation

The API key is optional. In clients that support custom headers, the examples use the recommended authenticated setup. To use anonymous access, remove only the Authorization entry and keep X-Anysearch-Client.

OpenCode

Official docs: MCP servers and configuration locations.

Use ~/.config/opencode/opencode.json for a global configuration or opencode.json in the project root. On Windows, the global path is %USERPROFILE%\.config\opencode\opencode.json.

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "anysearch": {
      "type": "remote",
      "url": "https://api.anysearch.com/mcp",
      "enabled": true,
      "oauth": false,
      "headers": {
        "Authorization": "Bearer {env:ANYSEARCH_API_KEY}",
        "X-Anysearch-Client": "mcp/1.0.0"
      }
    }
  }
}

OpenCode uses {env:NAME} for environment-variable substitution. "oauth": false prevents an unnecessary OAuth discovery flow for this API-key-authenticated server.

Claude Code

Official docs: Connect Claude Code to tools via MCP.

For a private, user-wide installation, run:

claude mcp add --transport http anysearch https://api.anysearch.com/mcp --scope user --header "Authorization: Bearer <your_api_key>" --header "X-Anysearch-Client: mcp/1.0.0"

The user scope stores the server in ~/.claude.json and makes it available across all projects on the machine. For anonymous access, omit the Authorization --header option.

For a shareable project configuration, create .mcp.json in the project root:

{
  "mcpServers": {
    "anysearch": {
      "type": "http",
      "url": "https://api.anysearch.com/mcp",
      "headers": {
        "Authorization": "Bearer ${ANYSEARCH_API_KEY}",
        "X-Anysearch-Client": "mcp/1.0.0"
      }
    }
  }
}

Claude Code expands ${VAR} and ${VAR:-default} in .mcp.json, including inside url and headers. Set ANYSEARCH_API_KEY before starting Claude Code. Project-scoped servers require approval when first opened interactively.

Verify the connection with:

claude mcp get anysearch
claude mcp list

Inside Claude Code, /mcp shows the server status and available tools.

Cursor

Official docs: Model Context Protocol.

Use .cursor/mcp.json for a project or ~/.cursor/mcp.json globally:

{
  "mcpServers": {
    "anysearch": {
      "url": "https://api.anysearch.com/mcp",
      "headers": {
        "Authorization": "Bearer ${env:ANYSEARCH_API_KEY}",
        "X-Anysearch-Client": "mcp/1.0.0"
      }
    }
  }
}

Cursor automatically recognizes the remote HTTP endpoint and supports ${env:NAME} interpolation in url and headers.

VS Code

Official docs: MCP configuration reference.

Run MCP: Open User Configuration for a user-wide server, or create .vscode/mcp.json in a workspace. This example uses a password input so the key is prompted for and stored securely instead of being committed:

{
  "inputs": [
    {
      "type": "promptString",
      "id": "anysearch-api-key",
      "description": "AnySearch API key",
      "password": true
    }
  ],
  "servers": {
    "anysearch": {
      "type": "http",
      "url": "https://api.anysearch.com/mcp",
      "headers": {
        "Authorization": "Bearer ${input:anysearch-api-key}",
        "X-Anysearch-Client": "mcp/1.0.0"
      }
    }
  }
}

For anonymous access, remove the Authorization entry and the entire inputs array.

Windsurf

Official docs: Cascade MCP integration.

Open Settings > Tools > Windsurf Settings > Add Server, or edit ~/.codeium/mcp_config.json via View Raw Config:

{
  "mcpServers": {
    "anysearch": {
      "serverUrl": "https://api.anysearch.com/mcp",
      "headers": {
        "Authorization": "Bearer ${env:ANYSEARCH_API_KEY}",
        "X-Anysearch-Client": "mcp/1.0.0"
      }
    }
  }
}

Windsurf supports environment-variable interpolation in serverUrl, url, and headers. Refresh the MCP server list after saving.

Cline

Official docs: MCP.

In the Cline panel, open MCP Servers > Configure > Configure MCP Servers, or add a hosted endpoint from the Remote Servers tab. Use the explicit streamableHttp type; omitting it falls back to legacy SSE behavior.

{
  "mcpServers": {
    "anysearch": {
      "type": "streamableHttp",
      "url": "https://api.anysearch.com/mcp",
      "headers": {
        "Authorization": "Bearer <your_api_key>",
        "X-Anysearch-Client": "mcp/1.0.0"
      },
      "disabled": false,
      "autoApprove": []
    }
  }
}

For Cline CLI, the config file is ~/.cline/mcp.json; cline mcp opens the interactive MCP wizard.

Client Quick Reference

Client	Official connection	Configuration location	Direct Streamable HTTP?
OpenCode	Remote MCP config	~/.config/opencode/opencode.json or project opencode.json	Yes
Claude Code	Remote HTTP MCP	User ~/.claude.json or project .mcp.json	Yes
Cursor	Remote MCP config	.cursor/mcp.json or ~/.cursor/mcp.json	Yes
VS Code	HTTP MCP config	User MCP config or .vscode/mcp.json	Yes
Windsurf	Remote HTTP MCP	~/.codeium/mcp_config.json	Yes
Cline	Remote Streamable HTTP	Cline MCP settings or ~/.cline/mcp.json	Yes

Available Tools

search

Execute a search query — general or vertical domain.

Parameter	Type	Required	Description
query	string	Yes	Natural language search query. ONE intent per call
domain	string	No	Vertical domain (e.g. finance, academic, security). Must come from get_sub_domains enum
sub_domain	string	No	Sub-domain routing key (e.g. finance.us_stock). Must come from get_sub_domains output
sub_domain_params	object	No	Structured params from get_sub_domains params column. NEVER invent values
max_results	integer	No	1–10, default 10

get_sub_domains

Query the vertical domain directory. Required before any search that uses a domain — returns valid sub_domains and their parameter schemas.

Parameter	Type	Required	Description
domain	string	One of	Single domain to query
domains	string[]	One of	Batch up to 5 domains (preferred — covers more ground)

Returns a Markdown table: sub_domain | description | params

batch_search

Execute 1–5 independent search queries in parallel. Single failure does not block others.

Parameter	Type	Required	Description
queries	object[]	Yes	1–5 query objects, each with same fields as search

extract

Fetch full page content from a URL and return as Markdown. Truncated at 50,000 characters. HTML pages only.

Parameter	Type	Required	Description
url	string	Yes	Target URL (http:// or https://)