ai.overwing/mcp

up checked 2026-11-11T06:38:05.120Z

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Publisher-provided title

Overwing

Publisher-provided description

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

Summary by lookupd

Gives agents guardrails for LLM output with pass, fail, or review verdicts, plus a registry of AI crawler identities and site readiness…

Install

Claude Code, remote (streamable-http)

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

Claude Code, npm package (stdio)

claude mcp add mcp -- npx -y overwing-mcp

Codex, remote (streamable-http)

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

Codex, npm package (stdio)

codex mcp add mcp -- npx -y overwing-mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Cursor, npm package (stdio) → .cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "overwing-mcp"
      ]
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (showing 30 of 41)

Publisher-provided text

• 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 chara
• 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 indepen
• 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 fai
• 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.
• whoami Identify the organization and plan behind the API key on this request, the key's scope, the organization's data settings (store_inputs, retention_days), and whe
• create_account Create an Overwing account for yourself, with no email: an organization and an API key, returned once. Nothing is sent to anyone. Use it when you have no key an
• prove_domain Begin proving that your account controls a domain. For an account with no email the domain stands in for one: it raises the limits to the normal free tier, open
• verify_domain Look for the value prove_domain asked for, at the domain. Found: the domain is the account's. Not found: an error saying what was looked for; DNS changes can ta
• list_plans Public plan catalog: prices, daily limits, and per-minute burst limits. No API key needed.
• atlas_lookup Say what a User-Agent string claims to be and whether the claim can be trusted, from the Overwing Atlas registry of AI crawlers, fetchers and browser agents. Re
• atlas_agents Browse or search Overwing Atlas, the registry of AI crawlers, fetchers and browser agents: name, operator, user-agent tokens, Web Bot Auth key directory, robots
• atlas_register_agent Add an agent or crawler you operate to the Overwing Atlas registry, free, so a site that looks up its User-Agent learns who runs it. Give the agent's name, the
• atlas_verify_registration Look for the proof at the operator's domain: the DNS TXT record or the file that atlas_register_agent asked for. Found: the entry is published in the registry,
• atlas_list_registrations The agents this organization has registered in Overwing Atlas, newest first, each with its status (pending_verification, pending_review, published, rejected) an
• atlas_withdraw_registration Withdraw a registration. A published entry leaves the registry, so lookups stop naming the agent; an unfinished request is abandoned. This cannot be undone: reg
• atlas_summary Public numbers from Overwing Atlas: registry counts by purpose and verification, published browser-agent traffic shares, sector field-scan headlines (e.g. how m
• beacon_start Overwing Beacon answers one question about a site: is this product reachable by agents? It checks robots.txt rules for AI agents, llms.txt, the sitemap, the MCP
• beacon_report The report for a check started with beacon_start. The first call runs the check. With an Overwing key on the connection: score (0 to 100), verdict (yes, partly,
• feedback Send one message to the people who run Overwing: a verdict you think was wrong, an error you could not act on, a payment you could not make, a tool that did not
• beacon_sample A real Overwing Beacon report, free: the check of overwing.ai itself, refreshed daily. Read it to see exactly what a full report holds before starting a check.
• preflight_payment Call this with the 402 you were given, before signing an x402 payment. It reads the terms (network, asset, amount, payee, timeout, resource) and answers allow,
• preflight_check Call this before signing any Solana transaction. Overwing Preflight simulates the unsigned transaction against the chain as it is now, works out what it would t
• preflight_verdict The public record of one Preflight verdict: its decision, reason codes, the programs the transaction would run, the transaction's digest, our signature, and eve
• preflight_report After a transaction that Preflight allowed has landed, report its signature. Preflight reads the landed transaction from the chain and says whether the allow he
• preflight_record Everything Preflight has said and how it held up: counts of verdicts and misses, every miss with what the chain showed, the latest verdicts, and what the guaran
• preflight_overview The reference for Overwing Preflight: every policy field, every reason code a refusal can carry, what a verdict does and does not promise, the price, and the te

Details

• Version: 0.15.0
• Transports: streamable-http, stdio
• Uptime (7 days): 100%
• Median latency: 476 ms
• First indexed: 2026-11-01T08:50:40.413Z
• Last seen in registry: 2026-11-01T08:50:40.533Z
• Repository: https://github.com/frod27/overwing-mcp
• Website: https://overwing.ai

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• Last crawl: 2026-11-11T15:38:39.561Z
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