MCP Integration

kubbi ships an MCP-compatible tool server. Install it once and every agent in your stack can create, claim, inspect, and delete temporary encrypted handoffs — including multi-file packages — with no SDK wiring required.


What is MCP?

The Model Context Protocol (MCP) is an open standard that lets AI agents discover and call tools at runtime. Instead of hard-coding integrations, agents connect to MCP servers and use whatever tools they expose. kubbi's MCP server exposes six tools that any MCP-compatible agent can use immediately.


Installation

The server runs via npx — no global install needed. Add the config to your MCP client and replace the API key with your own.

Claude Desktop

Add to claude_desktop_config.json

json
{
  "mcpServers": {
    "kubbi": {
      "command": "npx",
      "args": ["-y", "@kubbi.ai/mcp"],
      "env": {
        "KUBBI_API_KEY": "kb_..."
      }
    }
  }
}

Cursor

Add to .cursor/mcp.json

json
{
  "mcpServers": {
    "kubbi": {
      "command": "npx",
      "args": ["-y", "@kubbi.ai/mcp"],
      "env": {
        "KUBBI_API_KEY": "kb_..."
      }
    }
  }
}

Get your API key from the dashboard.


Available tools

kubbi_send

Create a kubbi — an ephemeral, encrypted payload with a unique claim URL. Share the claim URL with any consumer (agent, service, human) who can retrieve the content with no API key.

Parameters

contentcontentTypettlSecondsmaxRetrievalsmetadata

Returns: claim URL + kubbi ID

kubbi_send_files

Create a multi-file kubbi package — multiple files encrypted together with a single claim URL. Limits depend on your plan. For text files, pass content as a string. For binary files, base64-encode the content and set encoding to ‘base64’.

Parameters

filesttlSecondsmaxRetrievalsmetadata

Returns: claim URL + kubbi ID + file count

kubbi_claim

Claim a kubbi and retrieve its decrypted content. This counts as a retrieval — if max retrievals is reached, the content is permanently destroyed afterward. Works for both single-content and multi-file kubbis.

Parameters

claimUrl

Returns: decrypted content (or all files for packages)

kubbi_inspect

Inspect a kubbi without consuming it. Returns metadata (status, content type, retrieval count, expiry). For multi-file kubbis, also shows the file manifest. Does not count as a retrieval — safe to call repeatedly.

Parameters

claimUrl

Returns: metadata (status, content type, retrieval count, expiry, file manifest for packages)

kubbi_get

Get detailed metadata for a kubbi you created (by ID). Shows status, retrieval count, timestamps, and whether it has been claimed.

Parameters

id

Returns: full kubbi detail JSON

kubbi_delete

Delete (burn) a kubbi you created. Immediately wipes the encrypted payload. Any subsequent claim attempts will receive 410 Gone.

Parameters

id

Returns: confirmation


Example flow

Once kubbi is connected, the agent discovers the tools automatically. Describe what you need in plain language:

Agent sends a single-content kubbi· text
Tool call:  kubbi_send({
  content: "analysis result...",
  contentType: "application/json",
  ttlSeconds: 600,
  maxRetrievals: 1
})

Tool result: {
  "claimUrl": "https://api.kubbi.ai/r/abc123xyz",
  "id": "d290f1ee-6c54-4b01-90e6-d701748f0851"
}
Agent sends a multi-file package· text
Tool call:  kubbi_send_files({
  files: [
    { name: "report.json", content: "{...}", contentType: "application/json", role: "data" },
    { name: "summary.md", content: "# Summary...", contentType: "text/markdown", role: "instructions" }
  ],
  ttlSeconds: 3600
})

Tool result: {
  "claimUrl": "https://api.kubbi.ai/r/pkg456xyz",
  "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "fileCount": 2
}
Next agent claims the payload· text
Tool call:  kubbi_claim({
  claimUrl: "https://api.kubbi.ai/r/abc123xyz"
})

Tool result: {
  "content": "analysis result...",
  "contentType": "application/json"
}

Example prompts

  • 1

    Create a kubbi with this analysis result and send me the claim URL.

  • 2

    Claim the payload at this URL and summarize what’s inside.

  • 3

    Store this API response as a kubbi with max_retrievals: 1 and a 1-hour TTL.

  • 4

    Bundle these three files into a package kubbi and give me the claim link.

  • 5

    Inspect the kubbi at this claim URL before I claim it.

  • 6

    Delete the kubbi I just created — I changed my mind.