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What it does

Guardrails for LLM output: pass / fail / review verdicts and one recommended action. Hosted or npm.

Description as published by the publisher in the official MCP Registry, read 10 Oct 2026. Not written or verified by Few Servers.

Facts

Registry name	`ai.overwing/mcp`
Publisher	overwing.ai Namespace verified by the registry through the publisher's domain.
Category	Developer tools sorted by our keyword rules
Transport	remote (streamable-http), local package (npm)
Version	0.12.0
This version published	2 Oct 2026
Last seen	10 Oct 2026, in our crawl of the official MCP Registry
Tested by Few Servers	No

Remote endpoint (streamable-http), as published: https://overwing.ai/mcp
npm package, as published: overwing-mcp · version 0.12.0 · transport stdio
```
npx -y overwing-mcp
```
Standard run command for npm packages. The registry publishes the package name, not a command; check the repository for required arguments.

Install details read from the registry record on 12 Oct 2026. We have not run this server.

The registry record declares a secret value (a key or token) that is not marked required. Declared by the publisher:

Authorization (header, secret, not marked required): Optional. "Bearer ow_live_..." lifts the free limits; evaluate and atlas_lookup work without it, 10 a day each
OVERWING_API_KEY (environment variable, secret, not marked required): Overwing organization key (ow_live_...). Optional: evaluate and atlas_lookup work without it, 10 a day each. Needed for higher limits, rule sets and Tower setup
OVERWING_AGENT_KEY (environment variable, secret, not marked required): Optional Overwing Tower agent key (ow_agent_...). Without it, the tower_create_agent tool mints one for the session
OVERWING_BASE_URL (environment variable, not marked required): Override the API base URL for self-hosted deployments (default https://overwing.ai)

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