Negotiated 2025-11-25. The bar is 2025-06-18 or newer.
Pass
HTTPS
The endpoint URL is https.
Performance
Not measured
Fast (p50)
Median latency 272 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.
Not measured
Consistent (p95)
95th percentile 288 ms over 2 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.
Not measured
Reliable (uptime)
2 of 2 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.
Pass
Stable tool list
No tool was removed and no required parameter was added in the last 30 days.
Access
Pass
Open access
tools/list succeeded with no credential, and the record declares none.
Not measured
Standard auth
Auth is not required, so the OAuth metadata check does not apply.
Not measured
Free tier cited
No publisher quote has been checked.
Tools
Pass
Tools described
Every tool description is at least 20 characters.
Pass
Valid input schemas
Every inputSchema is a JSON Schema object.
Fail
Parameters documented
16 of 32 parameters have a description (50%). The bar is 80%.
Pass
Safety hints
Every tool sets readOnlyHint or destructiveHint.
Publisher
Pass
Verified namespace
Listed in the Official MCP Registry.
Pass
Website matches publisher
The website host matches the reverse-domain namespace.
Pass
Source repo linked
A repository URL is on file.
Not measured
Repo owner matches
This namespace is not an io.github login, so the owner comparison does not apply.
Pass
Recently updated
Updated 2026-10-22T15:55:00.506548Z, within 180 days.
Pass
Open-source licence
GitHub reports an OSI licence.
Start using BumbleBox
Connect to this server
Choose your client, copy the configuration, then enable the server in your client’s MCP settings.
Run this command in your terminal, then restart Claude Code.
Claude Code
claude mcp add --transport http bumblebox https://api.bumblebox.ai/api/mcp
Capabilities
Tools 17
archive_email
Moves one inbox email to its mailbox's archive folder, on the mail server too. Undone by restore_to_inbox. Nothing is deleted.
Discovered create_campaign_draft
Writes one draft inside an existing campaign, to one recipient (added to the campaign list if new), from the campaign's sender. Nothing is sent: the draft waits for the user to validate the campaign send in BumbleBox.
Discovered draft_reply
Saves the text as the reply draft of a received email, from the address the email was written to (a brand address or the mailbox). needsIdentity: that address cannot send until the user verifies it in BumbleBox. Nothing is sent: the draft waits in BumbleBox (Pilotage › prepared replies) until the user reviews it and clicks Send. Saving again replaces the previous draft of the same email.
Discovered get_email
One email in full: sender, recipients, date, subject, plain-text body, attachment names, folder and BumbleBox classification.
Discovered list_calendar_events
Events of the connected Google calendars between two dates (default: the next 7 days, at most 62 days).
Discovered list_campaign_drafts
The drafts of one campaign that wait for the user to validate them in BumbleBox (recipient, subject, plain-text body, sender), newest first, with the true totals.
Discovered list_folders
The folders of each connected mailbox, as last synced. Trash, spam, sent and drafts are left out.
Discovered list_missions
The user's prospection campaigns (missions), most recently active first, with the number of drafts waiting, emails sent and prospects who replied.
Discovered list_replies_to_validate
Replies received on campaigns that still need the user: prepared reply drafts waiting for validation, and replies with no answer yet (with the stored AI triage: kind, summary, whether a human is needed).
Discovered list_to_answer
Received emails BumbleBox classified as needing a reply and still in the inbox, newest first.
Discovered move_email
Moves one inbox email to an existing folder of the same mailbox (see list_folders), on the mail server too. No folder is created. Undone by restore_to_inbox.
Discovered restore_to_inbox
Moves an archived, filed or trashed email back to the inbox, on the mail server too.
Discovered search_contacts
Contacts BumbleBox knows from the mail history (name, address, organization domain, exchange counts, last exchanges, VIP mark, note), matched on name, address or domain.
Discovered search_emails
Searches every connected mailbox (sender, subject, preview), newest first. Operators: from:, subject:, before:YYYY-MM-DD, after:YYYY-MM-DD, in:sent (only what the user sent, from any mailbox or alias); the rest is free text. Deleted emails are not returned.
Discovered send_reply
Replies to the sender of one received email, and only to them (no Cc, no Bcc, no attachment), from the address the email was written to. What happens next is the level the user set in BumbleBox for this kind of reply: a draft, a reply waiting for one tap (the default), or a reply that leaves after a delay the user can cancel. Anything that commits the user (amounts, bank details, acceptance, contracts, dates, links) always waits for the user, and so does a reply from an address the user has not verified (needsIdentity). The result says which one applied.
Discovered trash_email
Moves one inbox email to its mailbox's trash when BumbleBox certifies it as noise (spam, newsletter, promotion, with a unanimous safety vote and no known contact or action word). Any other email is not moved: it becomes a proposal the user confirms in one tap in BumbleBox. Never a permanent deletion; undone by restore_to_inbox.
Discovered update_campaign_draft
Changes the subject, body or recipient of a draft that is still a draft. Nothing is sent, and a draft the user already validated cannot be changed.