Connect

MCP

Give a coding agent the hub as three tools, over one URL, with no key.

A coding agent that can search the hub, list a model's files and get a download URL with the hash it must have can fetch and verify a model without a human in the loop. The hub is an MCP server; add its URL to any client that speaks Streamable HTTP.

https://gethologram.ai/mcp

Stateless, anonymous, POST only. No OAuth, no key, nothing to install.

Connect

Client	How
Claude Code	`claude mcp add --transport http hologram-hub https://gethologram.ai/mcp`
Codex CLI	`codex mcp add hologram-hub --url https://gethologram.ai/mcp`
Cursor	in `~/.cursor/mcp.json`: `{ "mcpServers": { "hologram-hub": { "url": "https://gethologram.ai/mcp" } } }`
Any client	server URL `https://gethologram.ai/mcp`, transport Streamable HTTP

Protocol versions 2026-07-28, 2025-11-25, 2025-06-18 and 2025-03-26 are accepted.

The tools

Tool	Input	Returns
`search_models`	`query`, `task`, `license`, `format`, `max_weights_gb`, `sort`, `limit`	rows with id, task, library, licence, parameters, weight size, downloads, and where the bytes live
`get_model`	`id`	the pinned revision, every file with size and SHA-256, GGUF quantisations, sources with their health
`resolve_file`	`id`, `path`	a URL, the SHA-256 it must have, every source's URL and health, and the shell commands that download and verify

Weight bytes never travel in a tool result. The tool returns the instruction; the agent's shell or engine does the download.

By hand

The same server, called with curl:

curl -s -X POST https://gethologram.ai/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"resolve_file","arguments":{"id":"hexgrad/Kokoro-82M","path":"EVAL.md"}}}'

The text of the result, formatted:

{
  "id": "hexgrad/Kokoro-82M",
  "revision": "f3ff3571791e39611d31c381e3a41a3af07b4987",
  "path": "EVAL.md",
  "size": 534,
  "sha256": "9b4d7a54809bf22127d19d936d9e749249e1a655e2e0a1df8a6546f77a819658",
  "url": "https://gethologram.ai/hexgrad/Kokoro-82M/resolve/f3ff3571791e39611d31c381e3a41a3af07b4987/EVAL.md",
  "served_by_now": "huggingface.co",
  "sources": [
    { "kind": "huggingface.co", "healthy": true, "url": "https://huggingface.co/hexgrad/Kokoro-82M/resolve/f3ff3571791e39611d31c381e3a41a3af07b4987/EVAL.md" },
    { "kind": "modelscope.cn",  "healthy": true, "url": "https://modelscope.cn/models/hexgrad/Kokoro-82M/resolve/master/EVAL.md" },
    { "kind": "ipfs",           "healthy": true, "url": "https://ipfs.filebase.io/ipfs/bafybeiauiszvph34uhfnyzxi3uojfcm546hfcyi7cd5ozd272latt5pnnu/EVAL.md" }
  ],
  "download": "curl -L -o \"EVAL.md\" \"https://gethologram.ai/hexgrad/Kokoro-82M/resolve/f3ff3571791e39611d31c381e3a41a3af07b4987/EVAL.md\"",
  "verify": "echo \"9b4d7a54809bf22127d19d936d9e749249e1a655e2e0a1df8a6546f77a819658  EVAL.md\" | sha256sum -c",
  "handoff": { "hf": ["export HF_ENDPOINT=https://gethologram.ai", "hf download hexgrad/Kokoro-82M EVAL.md"] }
}

download and verify are complete commands. An agent runs the first, then the second, and keeps the file only on OK.

Without MCP

An agent that only has HTTP does not need this server. /agent.md is the whole hub on one screen, and /openapi.json describes every operation in a form any framework turns into tools. See the API reference.