handover.tools MCP Server

Install handover.tools MCP server

claude mcp add --transport http handover-gammaland https://handover.tools/mcp

{
  "mcpServers": {
    "handover-gammaland": {
      "url": "https://handover.tools/mcp"
    }
  }
}

{
  "mcpServers": {
    "handover-gammaland": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://handover.tools/mcp"
      ]
    }
  }
}

{
  "servers": {
    "handover-gammaland": {
      "type": "http",
      "url": "https://handover.tools/mcp"
    }
  }
}

{
  "mcpServers": {
    "handover-gammaland": {
      "serverUrl": "https://handover.tools/mcp"
    }
  }
}

Context tax

Connecting this server adds ~1,739 tokens of tool definitions to every model turn (moderate, 9 tools). Measured 2026-10-19 via its hosted endpoint; o200k tokenizer, worst case for clients that load all tools up front. How we measure

Input prices as of 2026-10-06. Excludes your own prompt and output.

Tools (9)

• handoff_put323 tok

  Store a piece of context and get back a short code. The person gives the link handover.tools/<code> to an agent on another device and it can fetch the content — no copy-paste of long text. The code is 8 letters, easy to type on a phone. NOT ENCRYPTED: the server can read what you store, so never put credentials, tokens, or private data in it, and ask the person before storing an employer's or client's confidential material (security findings, internal system details, unreleased code). Content becomes unreadable after the TTL expires, and by default it can only be fetched once. The response als

• channel_fetchhttp236 tok

  Use the local client at https://handover.tools/client/channel.py rather than calling this by hand: it returns ciphertext only the client can decrypt. Returns the peer's messages this side has not fetched yet. Call only when the person asks. Clients fetch with peek=true, which marks nothing, and then call channel_ack once they have processed the messages; without peek, the messages are marked read when the server sends them (kept for older clients); after=N returns messages after sequence N (the client passes the last one it processed, so a response lost in transit is fetched again; a smaller N

• handoff_get221 tok

  Fetch content stored by handoff_put using its 8-character code. The code is case-insensitive and hyphens are ignored, so 'kvmtrhxp' and 'KVMT-RHXP' are the same; the person may give it as a link like handover.tools/kvmtrhxp, and passing that is fine too. Return the content to the person verbatim and complete: it can be fetched only once. If the code is unknown, already fetched, or expired, content is null with a reason — these cases are deliberately indistinguishable. A channel link (handover.tools/join/<code>, or anything the person said with "Join") is not fetched: join it with the channel c

• channel_open183 tok

  Start pairing two agents on different machines for a multi-round exchange (e.g. one explores, the other studies and asks follow-up questions). Use the local client at https://handover.tools/client/channel.py — do not call this by hand. The client generates a secret password locally, and this call returns only a 3-character nameplate; the person gives nameplate + password (8 letters) to the other machine. The server never sees the password, so it cannot impersonate either side (SPAKE2). The person stays in the loop: send only after they approve, fetch only when they ask. Counts as one write aga

• channel_join176 tok

  Second half of pairing, run by the local client at https://handover.tools/client/channel.py. Send only the first 3 characters of the spoken code (the nameplate) plus this side's SPAKE2 message; the other 5 characters are the password and must never be sent to the server. The nameplate is consumed on success. Returns this side's key and the peer's SPAKE2 message. Unknown, used, or expired nameplates are deliberately indistinguishable.

• handoff_revoke147 tok

  Destroy content stored by handoff_put right now, before its TTL runs out and whether or not it has been fetched. Requires the revoke_key returned by handoff_put — the person fetching with the short code cannot revoke, only the writer can. Use this the moment someone says they sent the wrong thing, or changed their mind. Revoking an already gone item is not an error: the outcome is reported as 'already_gone'.

• channel_send146 tok

  Relay one ciphertext to the other side of a paired channel. The ciphertext must come from the local client at https://handover.tools/client/channel.py; do not call this by hand, and never base64-encode plaintext into it (that is rejected). Only send after the person has seen and approved the draft — the server cannot enforce this, the calling agent must. Returns the message's sequence number and how far the peer has read.

• channel_ack145 tok

  Use the local client at https://handover.tools/client/channel.py rather than calling this by hand. After a fetch with peek=true, the client calls this with the highest sequence number it processed. That is what the peer sees as read, so a response lost in transit never turns into a false read receipt. The cursor never moves back or past the last stored message; calling again with the same seq changes nothing. Slides the channel's expiry.

• channel_close68 tok

  Either side can close. Deletes the channel, both keys, and every stored message immediately. The other side's next fetch reports not_found_or_closed.

Freshness

Not enough public signals yet to judge maintenance.

1. Last commit (default branch)

   2026-10-19 · today · GitHub

2. Latest release

   no data · GitHub

3. Package published

   no data · npm/PyPI

4. Registry entry updated

   2026-10-19 · today · official registry · v1.1.0