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Mails.ai — Agent Email

R2· OAuth, once

A real inbox for AI agents: send, receive and thread email, behind a prompt-injection firewall.

v0.5.0 · active · website · descriptor JSON · versions

An agent can connect after a one-time OAuth consent by a human.Remote endpoint behind OAuth 2. Tokens stay with the agent; the registry only exposes the authorization metadata.
Quality100strong
Trust83of 100
Uptime, 30 days100%
Latency p50365 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "agent-email": {
      "type": "http",
      "url": "https://api.mails.ai/mcp"
    }
  }
}
claude mcp add --transport http agent-email https://api.mails.ai/mcp
[mcp_servers.agent-email]
url = "https://api.mails.ai/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "agent-email": {
      "type": "remote",
      "url": "https://api.mails.ai/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "agent-email": {
      "type": "http",
      "url": "https://api.mails.ai/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=agent-email&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLm1haWxzLmFpL21jcCJ9"
}
{
  "servers": {
    "agent-email": {
      "type": "http",
      "url": "https://api.mails.ai/mcp"
    }
  }
}
{
  "mcpServers": {
    "agent-email": {
      "httpUrl": "https://api.mails.ai/mcp"
    }
  }
}
extensions:
  "agent-email":
    enabled: true
    name: "agent-email"
    type: streamable_http
    uri: "https://api.mails.ai/mcp"
    timeout: 300

Quality 100 / 100strong

protocoln/a · weight 25
  • n/a
    protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)
authorization100 · weight 15
  • pass
    auth.prmProtected Resource Metadata (RFC 9728) published
  • pass
    auth.as_metadataauthorization server metadata reachable
  • pass
    auth.cimdClient ID Metadata Documents supported
  • n/a
    auth.secret_in_urlno templated URL
tool hygienen/a · weight 30
  • n/a
    tools.descriptions, tools.description_length, tools.schemas, tools.annotations, tools.directory_hints, tools.token_cost, tools.api_dumptool list unknown (behind auth, not probed, or empty)
stabilityn/a · weight 15
  • n/a
    stability.changes, stability.rug_pulltool list unknown
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know @mailsai/[email protected]

Tool list unknown · checked 2026-10-20 12:45 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 83 / 100

no-repository
provenance55
liveness100
freshness100
hygiene80

+dns-namespace +website +reachable +uptime-100% +updated-4d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

@mailsai/[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://api.mails.ai/mcp streamable-httpoauth2 AS: https://api.mails.aiyes100%365 ms–2026-10-20
packageregistryversionruntimesecrets
@mailsai/mcp-servernpm0.5.0–MAILS_API_KEY

Tools (0)

No tools observed. Tools appear once a credential-free probe can list them.

Schemas: list_tools.

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Official server.json
{
  "name": "ai.mails/agent-email",
  "title": "Mails.ai — Agent Email",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://api.mails.ai/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.5.0",
  "packages": [
    {
      "version": "0.5.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@mailsai/mcp-server",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "MAILS_API_KEY",
          "isSecret": true,
          "isRequired": true,
          "description": "Your mails.ai API key. Use an mk_test_ key to run against the sandbox or an mk_live_ key to send real mail. Free key at https://mails.ai"
        },
        {
          "name": "MAILS_BASE_URL",
          "description": "Override the API base URL. Defaults to the hosted mails.ai API; only needed for staging or self-hosted deployments."
        }
      ]
    }
  ],
  "websiteUrl": "https://mails.ai",
  "description": "A real inbox for AI agents: send, receive and thread email, behind a prompt-injection firewall."
}