Overwing MCP MCP server

The Overwing MCP server provides access to Overwing's AI guardrails, allowing agents to send text for safety evaluation and receive verdicts (pass, fail, review) with recommended actions. It also supports agent identity management and policy decisions for legacy system operations via the Tower product.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Overwing

MCP endpoint (Streamable HTTP)

https://overwing.ai/mcp

Vendor documentation

What you can do with it

Evaluate LLM output for safety and compliance
Manage agent identities and permissions
Execute policy decisions for legacy system actions
Retrieve signed receipts for agent operations

Tools advertised by the last live check:

evaluate
evaluate_batch
list_rule_sets
get_rule_set
create_rule_set
get_evaluation
list_evaluations
get_usage
whoami
create_account
prove_domain
verify_domain
list_plans
atlas_lookup
atlas_agents
atlas_register_agent
atlas_verify_registration
atlas_list_registrations
atlas_withdraw_registration
atlas_summary
beacon_start
beacon_report
beacon_sample
tower_load_template
tower_create_agent
tower_list_agents
tower_revoke_agent
tower_capabilities
tower_decide
tower_submit_action
tower_get_action
tower_compensate
tower_get_receipt
tower_verify_receipts

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http overwing-mcp https://overwing.ai/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add overwing-mcp --url https://overwing.ai/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable overwing-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "overwing-mcp": {
      "url": "https://overwing.ai/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "overwing-mcp": {
      "type": "streamableHttp",
      "url": "https://overwing.ai/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start overwing-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "overwing-mcp": {
      "type": "http",
      "url": "https://overwing.ai/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http overwing-mcp https://overwing.ai/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "overwing-mcp": {
      "url": "https://overwing.ai/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "overwing-mcp": {
      "serverUrl": "https://overwing.ai/mcp"
    }
  }
}

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