Atlas entry
choruskeepsake.
19 capabilities over MCP. First atlas observation.
19 tools. 4 only read. 6 change records. 2 send messages. 7 have no reading.◇
AI reading, beta. side-effects v1 on claude-haiku-5.5, calibrated on MCP (golden-3). Only readings above a measured precision count. Counts are tools, not calls: no tool was called.
AI readings summary · beta
The service lists 19 tools, and 12 have AI readings.
send_it_out and chase_the_missing are read as sending messages to people.
4 tools are read as changing records, including arrange_the_book, change_the_book and set_style.
start_book and add_people are read as creating records.
Written by code from the AI readings on this page: it groups them and says nothing they do not.
What an agent can do here
AI readings, beta · Readings on 12 of 19 MCP tools. 2 read as sending messages.
Moves money
0
No tool read this way.
Deletes or cancels records
0
No tool read this way.
Sends messages to people
2 tools
chase_the_missing0.84send_it_out0.84
Changes permissions
0
No tool read this way.
Runs code
0
No tool read this way.
Should ask a person first
0
No tool read this way.
No counted reading 7 tools No reading was counted, so any effect above is possible for them: close_collecting, find_my_book, get_links, order, preview_pages, send_feedback, their_own_link.
What changed
First atlas observation. Atlas history
Look first
AI reading, beta: AI adds items here; it never removes one.
chase_the_missingSends messages to people · 0.84send_it_outSends messages to people · 0.84
Surfaces
5 protocols checked
| ARD | Not found | No document retrieved |
|---|---|---|
| A2A | Not found | 0 skills |
| MCP | Valid | 2025-06-18 · 19 tools · resources not advertised · prompts not advertised |
| OpenAPI | Not detected | 0 operations |
| WebMCP | Not detected | 0 declarative form tools · experimental |
Exact states and meaning
- ARDabsent
Exact state: not found · No document retrieved
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
- A2Aabsent
Exact state: not found · 0 skills
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
- MCPobserved
Exact state: valid · Revision 2025-06-18 · 19 tools · resources not advertised · prompts not advertised
A usable protocol document was retrieved and validated.
Directly observed
- OpenAPIabsent
Exact state: not detected · 0 operations
No endpoint was established from the evidence and scope that InterfaceDelta inspected.
Not detected does not prove that no endpoint exists.
Not observed / not fetched
- WebMCPabsent
Exact state: not detected · 0 declarative form tools · experimental
No named declarative WebMCP form tools were observed in the origin root HTML.
Script-registered tools and other pages are not observed, so this does not mean the site has no WebMCP tools.
Not observed / not fetched
Capabilities
Showing 19 of 19.
| Tool and inputs | ◇ AI reading, beta · confidence | ||||||
|---|---|---|---|---|---|---|---|
| Read as one of the six effects 2 AI only raises attention: these rows come first. | |||||||
| also_email, book* | Sends messages to people 0.84 | Sends messages to people0.84 | |||||
| |||||||
| also_email, book* | Sends messages to people 0.84 | Sends messages to people0.84 | |||||
| |||||||
| Read as none of the six 10 Not a clearance. | |||||||
| book*, people* | Creates records0.85 | ||||||
| |||||||
| book*, cover, leave_out, order and 2 more | Changes records0.85 | ||||||
| |||||||
| book* | Reads only0.89 | ||||||
| |||||||
| answer_with, book*, chip_in, closes_on and 3 more | Changes records0.90 | ||||||
| |||||||
| book*, person | Reads only0.90 | ||||||
| |||||||
| book* | Reads only0.85 | ||||||
| |||||||
| book* | Reads only0.90 | ||||||
| |||||||
| book*, closes_on | Changes records0.84 | ||||||
| |||||||
| book*, changes, reset | Changes records0.82 | ||||||
| |||||||
| answer_with, closes_on, code, expecting and 7 more | Creates records0.81 | ||||||
| |||||||
| No counted reading 7 No reading was counted, so any effect is possible. | |||||||
| book* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| code, email* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| book* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| book*, option* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| book*, pages, person | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| book, kind, tool, trying_to and 1 more | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
| book* | unknown | unknown | unknown | unknown | unknown | unknown | No reading |
| |||||||
Read as this effect No reading: unknown Not read as this effect◇ AI readings, beta. A zero is a count, not a clearance.
Not observed in this Passport: A2A skills, MCP resources, MCP prompts, OpenAPI operations.
The atlas shows each capability by its plain identifier, inputs and declared sign-in. Publisher descriptions, paths, links and source evidence are not published here.
The comparison with the previous observation is shown only to the account that recorded it.
Atlas history
1 observation
- 19 capabilities · MCP 2025-06-18 · MCP endpoint validFirst observation
Fingerprint and versions
- Fingerprint
cf82e7d5111ad75891aa522c0398c7514cc778ca1c75836b354ec5cae7dccad7- Passport schema
- 0.5.0, passport-semantic-v4
- Consistency
- MCP_PROMPTS_ADVERTISEMENT_LIST: not applicable · MCP_RESOURCES_ADVERTISEMENT_LIST: not applicable · MCP_TOOLS_ADVERTISEMENT_LIST: match · OPENAPI_MCP_EXPLICIT_MAPPING: not applicable
Each class compares an observation with the previous atlas observation. Runs of unchanged observations are grouped. Struck values are what the previous observation recorded; inserted values are what this one recorded.
Declared and observed
19 tools declare hints; the AI readings agree with all 12 that have a reading.
A disagreement is not a finding about the service: either side can be wrong. How we compare declarations and readings.
About this entry
com.choruskeepsake/chorusListedOfficial MCP Registry · first listed 18 Sep 2026 · last listed 2 Nov 2026
Passive observations of a public interface listed in the Official MCP Registry. An observation does not verify security, ownership or compliance, and InterfaceDelta assigns no scores or rankings. Methodology · Report an inaccuracy · Ask for removal
Identity and snapshot
- Target key
sha256:58bdebe13a0560375e9839580048ea7035c8439a7afb367d6e47e21e1a870f8b- Locator SHA-256
78b582479f33cbc2af5b948e88ef087c8c4cf1fa48d3ec5f09e175aa2d023d5c- Snapshot generated
- 14 Nov 2026, 08:50 UTC
The entry is one exact observed target, not a real-world service identity, and implies no ownership. Endpoint paths are not published; the locator hash lets an operator confirm their own URL.