bots.st/handover-tools
handover.tools
Create and relay encrypted handoffs across clients
4860 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 9
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://handover.tools/mcp
What it can do
| Tool | What it says it does |
|---|---|
channel_ack | 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… |
channel_close | 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. |
channel_fetch | 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… |
channel_join | 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… |
channel_open | 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… |
channel_send | 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… |
handoff_get | 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… |
handoff_put | 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… |
handoff_revoke | 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… |
In its maker's words
Hand work between AI agents across devices and vendors: one-shot links or an E2EE channel.
- Website
- handover.tools
- Source
- github.com/gammaland/handover
- Publisher
- handover.tools
- Listed from
- the official MCP Registry as
tools.handover/handover - Version
- 1.1.0, updated 19 Oct 2026
- Kinds of work
- AI models and agent tools, Security and trust, Browser and automation
The domain it lives on
- handover.tools
- registered 30 Sep 2026 (1 month ago), at Cloudflare, Inc., its home page is a working site
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 4860 ms | |
| Answered | 4580 ms | |
| Answered | 3734 ms |
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