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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "sendmux-mcp": {
      "type": "http",
      "url": "https://mcp.sendmux.ai/mcp"
    }
  }
}

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

[mcp_servers.sendmux-mcp]
url = "https://mcp.sendmux.ai/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sendmux-mcp": {
      "type": "remote",
      "url": "https://mcp.sendmux.ai/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "sendmux-mcp": {
      "type": "http",
      "url": "https://mcp.sendmux.ai/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=sendmux-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLnNlbmRtdXguYWkvbWNwIn0%3D"
}

{
  "servers": {
    "sendmux-mcp": {
      "type": "http",
      "url": "https://mcp.sendmux.ai/mcp"
    }
  }
}

{
  "mcpServers": {
    "sendmux-mcp": {
      "httpUrl": "https://mcp.sendmux.ai/mcp"
    }
  }
}

extensions:
  "sendmux-mcp":
    enabled: true
    name: "sendmux-mcp"
    type: streamable_http
    uri: "https://mcp.sendmux.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 [email protected], [email protected]

Tool list unknown · checked 2026-10-19 10:20 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 97 / 100

provenance90

liveness100

freshness100

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-17d-ago

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

Dependencies

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

[email protected] PyPIthis 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

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.sendmux.ai/mcp` streamable-http	oauth2 AS: https://app.sendmux.ai	yes	100%	443 ms	–	2026-10-19

package	registry	version	runtime	secrets
`sendmux-mcp`	npm	1.0.0	–
`sendmux-mcp`	pypi	2.2.0	–	`SENDMUX_MAILBOX_API_KEY`, `SENDMUX_MANAGEMENT_API_KEY`, `SENDMUX_SENDING_API_KEY`

Tools (0)

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

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.Sendmux/sendmux-mcp",
  "title": "Email Inbox API + Sending by Sendmux",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.sendmux.ai/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "2.2.0",
  "packages": [
    {
      "version": "1.0.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "sendmux-mcp",
      "registryType": "npm"
    },
    {
      "version": "2.2.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "sendmux-mcp",
      "registryType": "pypi",
      "environmentVariables": [
        {
          "name": "SENDMUX_MCP_SURFACES",
          "value": "mailbox,management,sending",
          "format": "string",
          "isRequired": true,
          "description": "Tool surfaces to run locally."
        },
        {
          "name": "SENDMUX_MAILBOX_API_KEY",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Mailbox API key for Mailbox API and Sending API tools.",
          "placeholder": "smx_mbx_..."
        },
        {
          "name": "SENDMUX_MANAGEMENT_API_KEY",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Root API key for Management API tools.",
          "placeholder": "smx_root_..."
        },
        {
          "name": "SENDMUX_SENDING_API_KEY",
          "format": "string",
          "isSecret": true,
          "description": "Optional send-capable smx_mbx_ key or owner-approved smx_agent_ token for Sending API tools when it differs from the Mailbox API key.",
          "placeholder": "smx_mbx_..."
        }
      ]
    }
  ],
  "repository": {
    "id": "1253958043",
    "url": "https://github.com/Sendmux/sendmux-sdk",
    "source": "github",
    "subfolder": "packages/python/mcp"
  },
  "websiteUrl": "https://sendmux.ai/docs/guides/mcp",
  "description": "AI email inbox and sending tools with attachments, search, live events, and webhooks."
}