Chorus
https://choruskeepsake.com/mcp ↗
Description
Gathers voice, video and written messages from a group into one book for one person.
What our measurements say
Chorus is a remote MCP server published at choruskeepsake.com. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 1,750 ms, a delay an agent will notice. It offers a narrow, focused set of 14 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Most tool names directly indicate their purpose (e.g., 'start_book', 'get_links').
- Descriptions for 'send_it_out' and 'chase_the_missing' clarify distinct use cases.
Weaknesses
- Parameters like 'expecting' and 'answer_with' in 'start_book' lack contextual explanation.
- Descriptions are truncated (e.g., 'start_book' ends with 'wheth').
- Tool name 'their_own_link' is ambiguous in its purpose.
start_book— Parameters 'expecting' and 'answer_with' lack clear definitions.their_own_link— Name is ambiguous and does not clearly indicate purpose.start_book— Description is cut off mid-sentence ('wheth').
Verdict
Event narrative
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Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 772ms → warm 548ms (penalty 224ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
start_bookStarts a book of voice, video and written messages for one person, and returns the single link the organiser sends to everyone taking part. Gathering is free and the people recording need no app and no account. Use this as soon as somebody wants to collect messages from a group for one person, whether or not there is an occasion.
subject_namestringrequiredorganiser_emailstringrequiredoccasionstringcloses_onstringexpectingarrayanswer_witharraylead_withstringquestionsarray
get_linksReturns the link to forward to contributors, the link that plays every message straight through, and a short message the organiser can paste alongside.
bookstringrequired
add_peopleRecords who is expected to record. Somebody with an email address can be written to by send_it_out and reminded by chase_the_missing; somebody with only a name is reached in a group chat and their name is what the chase reads out. Adding a person sends nothing on its own.
bookstringrequiredpeoplearrayrequired
send_it_outEmails the invitation once to every person added with an address, and hands back a tap that opens WhatsApp, a text or a mail draft with the message and the link already written, for the family group and for anyone with no address. Nobody is written to twice by this tool.
bookstringrequiredalso_emailboolean
chase_the_missingWorks out who is still out, emails a reminder to the ones with an address, and hands back a message naming them, ready for the group chat and ready for one person. A person gets at most one reminder a day and three in all, and never one after they have asked to stop.
bookstringrequiredalso_emailboolean
book_statusReturns who is in with their name and relationship, how many voices, videos and written messages have landed, how many carried a photo, who the organiser is still waiting on, and the days left before collecting stops.
bookstringrequired
find_my_bookCall it with the email address the book belongs to and Chorus sends that address a six digit code, returning nothing about the books. Call it again with the address and the code and it hands back every book on that account with its handle. Holding the mailbox is the proof, so a book cannot be found by guessing an address.
emailstringrequiredcodestring
change_the_bookChanges the settings the organiser can change on the site: the day collecting stops, the questions people are asked, whether they may send voice, video or writing, and which one the button offers first. Nobody is told about a change.
bookstringrequiredcloses_onstringquestionsarrayanswer_witharraylead_withstring
their_own_linkReturns the second link, which asks the person the book is for about their own life rather than about somebody else. It refuses on a memorial, a new baby and an as they grow book, where the person cannot answer, and it is never the link to put in a group chat.
bookstringrequired
read_the_messagesReturns every message with who left it and what they said. A written message reads back whatever was paid; a voice or a video is written out on the tier that includes the words, and where it is not, the tool says so rather than half-answering.
bookstringrequired
close_collectingStops new messages arriving and returns the final counts with the gift link. Nothing is deleted and nothing is finished; it can be reopened.
bookstringrequired
reopen_collectingReopens a book that was closed or whose date ran out, and returns the collecting link to send round again.
bookstringrequiredcloses_onstring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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