原型 · 预览版:收录官方注册中心里的全部服务器,每 30 分钟同步一次。使用 Google 登录即可撰写评价。
PopNx MCP为使用 AI 的人准备的 MCP 服务器 · 用大白话讲清楚

Overwing

作者:frod27版本 0.15.0i★ 0i电脑或云端
注册名称ai.overwing/mcp

安装方法

概览

作者提供的说明(英文原文)

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

它能帮你做什么

我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。

  • 连接方式: 电脑或云端
  • 传输方式: stdio, Streamable HTTP
  • 分类: 搜索与 AI 记忆
  • 你需要填写:OVERWING_API_KEY, OVERWING_AGENT_KEY, Authorization

安装

选择你使用的 AI 应用,然后复制设置。

通过 5/5 项检查 · 你的提问会经过开发者的服务器(overwing.ai)

第一步:你用哪个 AI?

选择你用的应用,步骤会显示在下方。

可连接 Claude · 约 5 分钟

需要 Overwing 的密钥(在开发者网站注册,可能收费) · 在 claude.ai 或桌面应用设置一次,即可在聊天中使用 · 免费账户可添加 1 个

  1. 注册并创建 Overwing 的密钥

    打开开发者网站,注册账户并创建 API 密钥,下一步要用。可能收费。

    打开 Overwing 网站 ↗

  2. 打开 Claude 的 Connectors 页面

    CustomizeConnectors

    CustomizeConnectors1+ Add2https://…3Add4
  3. 点击“+ Add” → “Add custom connector”,填写这 2 项

    把这里的内容复制到 Claude 中同名的输入框,然后点击 Continue

    Name · 名称Overwing
    Remote MCP server URL · 地址https://overwing.ai/mcp

    在 Request headers 下添加这个名称和值

    Header 名称Authorization
    值Bearer <在这里粘贴你的密钥>

    只把密钥粘贴到应用的输入框里,不要粘贴到聊天中或发给任何人

    Authentication 保持 Claude 检测到的设置,然后点击 Add

  4. 在聊天中开启

    +ConnectorsOverwing

  5. 试一试

    用 Overwing 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 Claude 说正在使用 Overwing,或回答中出现 Overwing 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 Anthropic 帮助页面核实 · 你的界面可能因版本略有不同

ChatGPT 暂时无法连接 Overwing

Overwing 连接时需要你自己的密钥,但 OpenAI 帮助页面只说明了 OAuth 登录,没有我们能核实的填密钥方式

你可以改用这些方式

A · 使用能连接 Overwing 的应用

  • 需要 Overwing 的密钥(在开发者网站注册,可能收费) · 在 claude.ai 或桌面应用设置一次,即可在聊天中使用 · 免费账户可添加 1 个
  • 需要 Overwing 的密钥(在开发者网站注册,可能收费)
  • 需要 Overwing 的密钥(在开发者网站注册,可能收费)
  • 需要 Overwing 的密钥(在开发者网站注册,可能收费)

B · 搜索与 AI 记忆 类中能连接 ChatGPT 的其他服务器

从同类中使用较多的里挑选,仅限用地址即可连接、无需密钥的

可连接 Claude Code · 约 5 分钟

需要 Overwing 的密钥(在开发者网站注册,可能收费)

  1. 注册并创建 Overwing 的密钥

    打开开发者网站,注册账户并创建 API 密钥,下一步要用。可能收费。

    打开 Overwing 网站 ↗

  2. 打开终端

    Mac:按 Command+空格,输入 Terminal · Windows:打开 PowerShell

  3. 粘贴这条命令并按 Enter

    claude mcp add --transport http overwing https://overwing.ai/mcp --header 'Authorization: your-value'

    按 Enter 前,把“your-value”改成你的密钥

    只把密钥粘贴到应用的输入框里,不要粘贴到聊天中或发给任何人

  4. 在 Claude Code 中输入 /mcp

    应能看到 Overwing 在列表中并显示已连接

  5. 试一试

    用 Overwing 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 Claude Code 说正在使用 Overwing,或回答中出现 Overwing 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 Anthropic 帮助页面核实 · 你的界面可能因版本略有不同

可连接 Cursor · 约 5 分钟

需要 Overwing 的密钥(在开发者网站注册,可能收费)

  1. 注册并创建 Overwing 的密钥

    打开开发者网站,注册账户并创建 API 密钥,下一步要用。可能收费。

    打开 Overwing 网站 ↗

  2. 点击这个按钮打开 Cursor

    在 Cursor 中打开

    Cursor 会请你确认安装,点击 Install

  3. 填写你的密钥

    在 Overwing 的设置中,Authorization 还是空的,填入你的密钥并保存

    只把密钥粘贴到应用的输入框里,不要粘贴到聊天中或发给任何人

  4. 在 Cursor 中以 Agent 模式打开 AI 聊天

  5. 试一试

    用 Overwing 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 Cursor 说正在使用 Overwing,或回答中出现 Overwing 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 Cursor 帮助页面核实 · 你的界面可能因版本略有不同

可连接 VS Code · 约 5 分钟

需要 Overwing 的密钥(在开发者网站注册,可能收费)

  1. 注册并创建 Overwing 的密钥

    打开开发者网站,注册账户并创建 API 密钥,下一步要用。可能收费。

    打开 Overwing 网站 ↗

  2. 点击这个按钮打开 VS Code

    在 VS Code 中打开

    VS Code 会请你确认安装,点击 Install

  3. 填写你的密钥

    在 Overwing 的设置中,Authorization 还是空的,填入你的密钥并保存

    只把密钥粘贴到应用的输入框里,不要粘贴到聊天中或发给任何人

  4. 在 VS Code 中以 Agent 模式打开 AI 聊天

  5. 试一试

    用 Overwing 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 VS Code 说正在使用 Overwing,或回答中出现 Overwing 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 VS Code 帮助页面核实 · 你的界面可能因版本略有不同

其他支持 MCP 的应用(如 Windsurf、Zed、Gemini CLI)添加方式各不相同,请在应用列表中查看

查看所有支持 MCP 的应用 →

通过网页连接的应用使用的地址

地址https://overwing.ai/mcp

JSON 设置在下方“开发者专用”中

卡住了?问问正在用 Overwing 的人💬 讨论 →
开发者专用:终端命令和 JSON 设置

通过网页连接

Claude Code

claude mcp add --transport http overwing https://overwing.ai/mcp --header 'Authorization: your-value'

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "overwing": {
      "url": "https://overwing.ai/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

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

安装在电脑上

Claude Code

claude mcp add overwing --env OVERWING_API_KEY=your-value --env OVERWING_AGENT_KEY=your-value --env OVERWING_BASE_URL=your-value -- npx -y overwing-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "overwing": {
      "command": "npx",
      "args": [
        "-y",
        "overwing-mcp"
      ],
      "env": {
        "OVERWING_API_KEY": "your-value",
        "OVERWING_AGENT_KEY": "your-value",
        "OVERWING_BASE_URL": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "overwing": {
      "command": "npx",
      "args": [
        "-y",
        "overwing-mcp"
      ],
      "env": {
        "OVERWING_API_KEY": "your-value",
        "OVERWING_AGENT_KEY": "your-value",
        "OVERWING_BASE_URL": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "overwing": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "overwing-mcp"
      ],
      "env": {
        "OVERWING_API_KEY": "your-value",
        "OVERWING_AGENT_KEY": "your-value",
        "OVERWING_BASE_URL": "your-value"
      }
    }
  }
}

需要你填写的值

  • OVERWING_API_KEY 机密 env
    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. Get one at https://overwing.ai/login…
  • OVERWING_AGENT_KEY 机密 env
    Optional Overwing Tower agent key (ow_agent_...). Without it, the tower_create_agent tool mints one for the session
  • OVERWING_BASE_URL env
    Override the API base URL for self-hosted deployments (default https://overwing.ai)
  • Authorization 机密 HTTP header
    Optional. "Bearer ow_live_..." lifts the free limits; evaluate and atlas_lookup work without it, 10 a day each

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同,请以 README 为准。

一览

每周下载量i
106/周
已验证域名
✓ overwing.ai
连接方式
电脑或云端
传输方式
stdio, streamable-http
最新版本i
0.15.0
发布到注册中心i
2026年10月14日
代码最后更新i
2026年11月4日
作者
frod27
软件包
npm: overwing-mcp
注册状态
活跃

哪些应用可以使用它

依据这个服务器的连接方式和各应用自己的文档,检查于 2026年11月10日。

通过互联网连接,适用于

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast

在你的电脑上运行,适用于

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast

全部应用及其优缺点 →

它能做什么

工具名称和描述与服务器在 2026年11月8日 报告的完全一致。这些内容由作者撰写,不是我们写的;我们以纯文本形式显示。

  • 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 text (typically an LLM's output) against an Overwing rule set. The text can be

  • 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, weight, and action (block, redact, or review) that callers should take when it f

  • 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 whether billing is set up. Needs an organization key.

  • 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 and nobody has given you one; do not create a second account if you already have a key (whoami says which account a key be

  • 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, opens full Beacon reports, and lets a lost key be replaced. Returns one value to publish at the domain, as a DNS TXT record

  • 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 take a few minutes, and calling again is safe. Needs an organization key.

  • 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. Returns the claimed agent, operator, purpose class, verification method (Web Bot Auth signature, user-agent string only, o

  • 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.txt behaviour, and (with Atlas Pro or Team) purpose class, verification, evasion flags and traffic shares. Filter by fr

  • 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 operator (the company or person running it), the operator's domain, and the token the User-Agent carries (the product na

  • 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, or held for a person when the operator name already belongs to someone. Not found: an error saying what was looked for;

  • atlas_list_registrations

    The agents this organization has registered in Overwing Atlas, newest first, each with its status (pending_verification, pending_review, published, rejected) and, while unverified, the value to publish at the domain. Needs an organization key.

  • 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: register again to put it back. Needs an organization key.

  • 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 many OSINT sites carry AI-crawler rules or any agent-payable surface), and the summary of the Agent Consumers report on w

  • 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 server card, hosted MCP endpoint and MCP Registry listing, the A2A agent card, OpenAPI discovery, and how the home page

  • 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, no), the find / read / use answers, every check with what was found and a fix when it did not pass, and top_fixes ranke

  • 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 do what its description says. Read by a person, not answered automatically; give a contact if you want an answer. No ke

  • 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. No key needed.

  • 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, review or refuse with reasons: the terms against your policy, the payee against x402-list's directory (verified delivery

  • 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 take from the wallet you name (SOL, tokens, and control of its token accounts) and answers allow or refuse against your p

  • 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 every landed transaction reported against it. Never the wallet, the amounts or the transaction. No key needed.

  • 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 held: not_a_miss, or miss when it took more from the wallet than the policy permitted. The outcome is published. A covered

  • 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 guarantee's reserve holds. Read it before deciding whether to rely on Preflight. No key needed.

  • 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 terms of the guarantee. Read it once before the first preflight_check. No key needed.

  • tower_load_template

    Set up Overwing Tower for this organization by loading the starter workflow: email purchase order to order entry, with create_order, update_order and cancel_order against a mock IBM i system, and a starter policy. Idempotent. Needs an organization key. Returns a sample input you

  • tower_create_agent

    Create a scoped agent identity and its key. Needs an organization key. Scope it to the operations the agent needs (for example create_order) rather than * where you can. The key (ow_agent_...) is returned once, in this result, and this server does not keep it: store it, and send

  • tower_list_agents

    List this organization's Tower agents with scopes, status and last use. Keys are never returned. Needs an organization key.

  • tower_revoke_agent

    Revoke an agent. Its key stops working at once and cannot be restored. Needs an organization key.

  • tower_capabilities

    List the operations this agent is allowed to call, each with the JSON Schema its input must match and its compensating operation. Call this first; build inputs from the schema rather than guessing. Needs an agent key.

  • tower_decide

    Ask Tower how it would rule on an operation without doing anything: auto (would execute), review (a person must approve), or reject. Returns the score, the reason, and each policy question's answer. No side effects. Needs an agent key.

  • tower_submit_action

    Ask Tower to perform an operation on the legacy system. Tower decides: executed (done), pending (a person must approve; poll tower_get_action, do not resubmit), or rejected (do not retry unchanged). Always send an idempotency_key that is stable for this business request, such as

  • tower_get_action

    Status and result of an action: pending, approved, executed, failed, compensated, or rejected. Use it to poll an action that is waiting on human review. Needs an agent key.

  • tower_compensate

    Run the compensating operation for an executed action, for example cancel the order that create_order made. Runs once; repeating it returns the first outcome. Needs an agent key.

  • tower_get_receipt

    Fetch one signed receipt by id or by sequence number: the payload, its hash, the previous link's hash, and the Ed25519 signature. Needs an agent key.

  • tower_verify_receipts

    Recompute every hash and check every signature over a range of this organization's receipts. Reports the first break, if any. Defaults to the whole chain (up to 5,000 links per call). Needs an agent key.

基础检查i

我们检查的是任何人都能看到的信息;我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月11日

  • ✓ 通过

    作者与仓库一致

    注册名称已通过域名 overwing.ai 验证(注册中心会核实域名所有权)

  • ✓ 通过

    仍在维护

    代码最后更新于7天前

  • ✓ 通过

    有许可证

    使用 MIT

  • ✓ 通过

    端点有响应

    在 262 毫秒内响应(HTTP 200)

  • – 不适用

    使用 OAuth 登录

    无需登录

  • ✓ 通过

    工具描述中没有隐藏指令

    已读取 41 个工具描述,未发现针对 AI 的隐藏指令

讨论

提问、分享技巧或报告无法使用。按“有帮助”数量排序。

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与“搜索与 AI 记忆”中的其他服务器比较i

  • 星标数多于此分类中其他 5887 个服务器的 0%
  • 发布到注册中心的时间比此分类中其他 5887 个服务器的 57% 更新
  • 基础检查结果等于或优于此分类中其他 5887 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时,星标数才计入。

常见问题

Overwing 安全吗?

它在 5 项适用的基础检查中通过了 5 项。我们没有阅读代码。在添加密钥或令牌之前,请先看看这个服务器要求哪些权限,并使用只具备所需权限的密钥。

它需要哪些密钥或代码?

你需要填写:OVERWING_API_KEY, OVERWING_AGENT_KEY, Authorization

它在我的电脑上运行还是在云端?

两种方式都可以:安装在你的电脑上,或者连接云端版本。

它还在维护吗?

GitHub 仓库最后更新于7天前,最新版本(0.15.0)于28天前进入注册中心。

哪些应用可以使用它?

支持 MCP 的应用,例如 Claude Desktop、Claude Code、Cursor 和 VS Code。它通过 URL 连接,因此也能用于支持远程 MCP 的应用,例如 ChatGPT Business 及以上方案。

有什么可以替代它?

同一分类中有:Ruflo, Context7, Metabase

替代选择

同一分类中其他作者的服务器,按星标数排序。

如何看卡片:↓ 每周下载量i★ GitHub 星标i三大支柱:评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

Ruflo

Agent teams, swarms, memory and hooks for Claude Code and Codex, served over MCP.

作者:ruvnet广泛使用↓ 7.4万/周★ 8.1万今天更新

在你的电脑上运行

Context7

Up-to-date docs for AI agents

作者:upstash广泛使用↓ 125万/周★ 6.4万前天更新

电脑或云端

Metabase

Lets AI clients search, explore, query, and visualize data in a Metabase instance.

作者:metabase广泛使用★ 5万6个月前更新

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Guardrails for LLM output, as MCP tools.

Score any text for safety and quality. Get pass / fail / review verdicts with calibrated confidence, usually in under 500 ms.

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Overwing is an API that checks what your model said before it ships. This package exposes it to any MCP-capable agent: Claude Desktop, Claude Code, Cursor, Windsurf, VS Code, OpenAI's Agents SDK, and anything else that speaks the Model Context Protocol.

  • Real verdicts, not vibes. Every rule returns a typed answer, a probability, and a confidence. fail means a rule matched; review means it was unsure; pass means neither.
  • Prebuilt `content-safety` and `outbound-message` rule sets: toxicity, personal data, confidential leaks, self-harm, sexual content, severity. Or write your own rules in plain language.
  • Built for agents. Sign up, pay, evaluate, rotate keys, and cancel, all as JSON. No CAPTCHA, no browser required. See overwing.ai/llms.txt.

Try it without installing anything: paste text into the console at overwing.ai.

Hosted, no install

The same 41 tools are served at https://overwing.ai/mcp (Streamable HTTP). Point any client that takes a remote MCP URL at it:

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

No key is needed for evaluate, atlas_lookup, atlas_summary, list_plans, create_account, the three beacon_ tools, and preflight_verdict, preflight_report, preflight_record and preflight_overview. For the rest, send Authorization: Bearer ow_live_... on the connection.

Install

It works with no API key: evaluate and atlas_lookup each run 10 times a day free, and text sent without a key is not stored. For more, get a key at overwing.ai/login, or let your agent make its own account with the create_account tool. That account has no email: nothing is sent to anyone, and the key is returned once. The same call from a shell:

curl -X POST https://overwing.ai/api/v1/signup

Put the key in OVERWING_API_KEY. An account with no email starts at 50 evaluations a day; proving a domain (prove_domain, verify_domain) raises it to the normal free limits and makes a lost key recoverable.

Claude Code

claude mcp add overwing -e OVERWING_API_KEY=ow_live_... -- npx -y overwing-mcp

Claude Desktop, Cursor, Windsurf, VS Code (any JSON-configured client)

{

"mcpServers": { "overwing": { "command": "npx", "args": ["-y", "overwing-mcp"], "env": { "OVERWING_API_KEY": "ow_live_..." } } } }

Set OVERWING_BASE_URL to point at a self-hosted deployment. Requires Node 20+.

For Overwing Tower, set OVERWING_AGENT_KEY=ow_agent_... to operate as an existing agent. Without it, tower_create_agent mints a key with the organization key and keeps it in memory for the session.

evaluate, atlas_lookup, atlas_summary and list_plans work with no key at all.

For Overwing Preflight, preflight_check needs OVERWING_API_KEY; the other preflight_ tools need no key. No Preflight tool takes a private key, and none should ever be given one.

The text can be in any language. It was tested on 2026-09-29 in Spanish, Portuguese, French, German, Japanese, Simplified Chinese, Korean, Arabic and Hindi: a small test, not a benchmark. Results come back in English.

Tools

ToolWhat it does
evaluateScore one text against a rule set. Returns the verdict, a recommended_action (block, redact, review, or allow), aggregate score, confidence, latency, and per-rule results with each rule's action. Takes an optional context object (recipient, channel, ownership) that context-aware rule sets such as outbound-message read, and store: false to run the check without keeping the text.
evaluate_batchScore up to 50 texts in one call, with a summary and per-item verdicts and recommended actions.
list_rule_sets · get_rule_set · create_rule_setBrowse the prebuilt set or define your own rules: yes/no questions, classifications, or scored scales.
get_evaluation · list_evaluationsRead stored results, filter by verdict or rule set, page with a cursor.
create_account · prove_domain · verify_domainAn account for the agent itself, with no email: create_account returns a key and sends nothing to anyone. Proving a domain (a DNS TXT record or a file) takes the place of the email: it raises the limits, opens full Beacon reports, and makes a lost key recoverable.
atlas_lookupOverwing Atlas: say what a User-Agent string claims to be and whether the claim can be trusted (Web Bot Auth, spoofable string, or unattributable). Works with no key, 10 a day; 100 a day with a free key.
atlas_agents · atlas_summarySearch the registry of AI crawlers, fetchers and browser agents; get traffic shares, sector field-scan headlines, and the agent-spending summary.
atlas_register_agent · atlas_verify_registration · atlas_list_registrations · atlas_withdraw_registrationAdd an agent you operate to the Atlas registry, free, so a lookup of its User-Agent names you. Register it, publish the value you are given at the operator's domain (a DNS TXT record or a file), then verify. Needs OVERWING_API_KEY.
beacon_start · beacon_report · beacon_sampleOverwing Beacon: is a site reachable by agents? Checks robots.txt, llms.txt, the MCP server card, endpoint and Registry listing, the A2A agent card and OpenAPI, and how the home page reads to a model. A check is free: beacon_start returns an id and beacon_report runs the check and returns the report. With OVERWING_API_KEY it is the full report, saved to your dashboard; with no key it is the summary (the score, the three answers and the first fix). beacon_sample is a real report in full.
feedbackTell the people who run Overwing what went wrong: a wrong verdict, an error you could not act on, a payment you could not make. No key needed.
preflight_checkOverwing Preflight: should the agent sign this Solana transaction? Give it the unsigned transaction in base64 and a policy: the wallet to protect, the most SOL that may leave it (max_sol_out, fees included, or max_sol_out_lamports), and optionally max_token_out, min_token_in, allowed_programs and allow_delegation. It simulates the transaction and answers allow or refuse with every reason. Sign only on allow; a refusal, an error or anything else means do not sign. A verdict is valid for about two minutes. It never takes a private key. One check counts as one evaluation. Needs OVERWING_API_KEY.
preflight_paymentShould the agent sign this x402 payment? Reads the 402's terms and checks the payee against x402-list's directory and the server's own manifest, and the price against the record. allow, review or refuse with reasons. No key needed.
preflight_verdict · preflight_report · preflight_record · preflight_overviewPreflight's public side, with no key: read one published verdict, report the transaction that landed after a verdict (by its signature) to learn whether the verdict held, read the record of every verdict and miss, and read the overview of policy fields, reason codes, limits and prices.
tower_load_template · tower_create_agent · tower_list_agents · tower_revoke_agentOverwing Tower setup, with the organization key: load the starter order-entry workflow, then mint a scoped agent identity. The new agent key is used for the rest of the session.
tower_capabilities · tower_decide · tower_submit_action · tower_get_action · tower_compensateOverwing Tower operations, with the agent key: see which operations you may call and their input schemas, ask how a request would be ruled, submit it (executed, pending human review, or rejected), poll it, undo it.
tower_get_receipt · tower_verify_receiptsRead a signed receipt, or recompute every hash and signature in the chain.
get_usage · whoami · list_plansToday's quota, the org behind the key, and the public plan catalog.

The overwing://guide resource returns the full plain-text API guide.

Data handling and security

What this server does on your machine: it reads three environment variables (OVERWING_API_KEY, OVERWING_AGENT_KEY, OVERWING_BASE_URL) and makes HTTPS requests to the Overwing API. It reads no files, runs no commands, and talks to no other host. It has two runtime dependencies (@modelcontextprotocol/sdk, zod), and the whole server is one file: src/index.ts.

What happens to text you evaluate:

  • It is sent to the Overwing API, and from there to TypeSafe, whose Jev model produces the verdict. It is not used to train models.
  • Without a key the text is never stored.
  • With a key the text, context and verdict are stored so you can read them back with get_evaluation, until you delete them. To change that:
  • pass store: false to evaluate or evaluate_batch to keep no text or context for that call;
  • set store_inputs: false on the organization (PATCH /api/v1/org, or the dashboard) to keep none at all;
  • set retention_days on the organization to delete evaluations after that many days.
  • A Solana transaction you check with preflight_check is sent to the Overwing API with its policy, and simulated against a Solana node. What is published is the verdict: its id, decision, reason codes, programs and the transaction's digest. Never the wallet, the amounts or the transaction. No private key is ever sent, and the tool does not accept one.
  • Traffic is encrypted in transit (TLS) and the database is encrypted at rest (AES-256).

Give your agent a restricted key. A key with scope evaluate can run checks and read rule sets, and cannot read stored evaluations, change rule sets, manage keys, webhooks or billing, or delete anything:

curl -X POST https://overwing.ai/api/v1/api-keys \

-H "Authorization: Bearer ow_live_..." -H "Content-Type: application/json" \ -d '{"name":"agent","scope":"evaluate"}'

Overwing is a young service and has not had an independent security audit. The full picture, including subprocessors and what we have not done, is at overwing.ai/security; the privacy policy is at overwing.ai/privacy. To report a vulnerability, see SECURITY.md.

Example

Ask your agent:

Check this reply before I send it: "Reach me at dana@example.com or 555-0142 to sort out the refund."

It calls evaluate and gets back:

Verdict: FAIL  score=0.82  confidence=0.97  251ms

toxicity: pass (answer="safe", confidence=1) pii_detected: fail (answer=true, confid

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