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Overwing

by FastDrop

MCP Verified 2 hours ago Registry import free

Guardrails for LLM output: pass / fail / review verdicts with calibrated confidence in under 500 ms.

Guardrails for LLM output: pass / fail / review verdicts with calibrated confidence in under 500 ms. Official MCP Registry: ai.overwing/mcp@0.3.0. Package/stdio server - no remote endpoint to probe.

Problem it solves

Discoverable MCP server listed in the official MCP Registry.

How it's different

Package server from the official registry (no remote probe).

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as ai.overwing/mcp and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

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Tools this endpoint exposes

Read directly from the endpoint on 13 Oct 2026. Not supplied by the maker.

  • evaluate

    Works with no API key: 10 evaluations a day, inputs up to 2,000 characters, and the text is not stored. With a key: 250 a day and up, inputs up to 100,000 characters, and your own rule sets. Score any

  • evaluate_batch

    Score up to 50 texts against one rule set in a single call. Each item counts as one evaluation. Returns a summary plus per-item verdicts; items can fail independently. Needs an organization key.

  • list_rule_sets

    List the prebuilt and custom rule sets available to this organization. Needs an organization key.

  • get_rule_set

    Fetch a rule set with its full rule definitions. Use 'content-safety' as a worked example when writing your own. Needs an organization key.

  • create_rule_set

    Create a custom rule set with 1 to 25 rules. Each rule is a choice (pick one option), score (position on an ordered scale), or noul (yes/no) question with a fail condition, optional review threshold,

  • get_evaluation

    Fetch a stored evaluation by id, including the original input and per-rule results. Needs an organization key.

  • list_evaluations

    List recent evaluations, newest first, with optional verdict and rule set filters. Use next_cursor to page. Needs an organization key.

  • get_usage

    Daily usage, remaining quota for today, and plan limits. Needs an organization key.

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Matched on shared tags and the tools their MCP servers actually expose.

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