ZV-2026-1408 · 2026-09-24breaking
ucpchecker.com: Prompt compare-stores was removed.
[breaking] Prompt resolve-stores was removed.
Public changelog
ucpchecker.com
Contract history for the ucpchecker.com MCP server, every tool-schema change Zevruna has observed, classified from the consumer's perspective.
90-day stability
quietsaferiskybreaking
4Breaking · 90d
4Advisories
9Snapshots kept
2026-09-24Last observed
Advisories
ZV-2026-1084 · 2026-09-15breaking
ucpchecker.com: Resource ucp://stores/verified was removed, consumers reading it will break.
ZV-2026-1045 · 2026-09-14breaking
ucpchecker.com: Field min_score was removed from list-stores input; consumers still sending it may be rejected or silently ignored.
[risky] Description of list-categories changed (70% word delta). [risky] Description of list-stores changed (37% word delta). [risky] Description of search-all changed (60% word delta).
ZV-2026-0592 · 2026-09-01breaking
ucpchecker.com: Tool add-to-cart was removed.
[breaking] Tool build-bundle was removed. [risky] Description of get-product-details changed (25% word delta). [breaking] Prompt shop-for-product was removed. [safe] Prompt resolve-stores was added.
Contract changelog
Every revision Zevruna has observed, classified from the consumer's side. Advisories above are the subset severe enough to publish.
2026-09-24 15:42safe
- Prompt
compare-storeswas added. - Prompt
resolve-storeswas added.
2026-09-24 15:41breaking
- Prompt
compare-storeswas removed. - Prompt
resolve-storeswas removed.
2026-09-15 16:17breaking
- Resource
ucp://stores/verifiedwas removed, consumers reading it will break.
2026-09-14 17:27risky
- Description of
search-allchanged (28% word delta).
2026-09-14 11:57breaking
- risky Description of
list-categorieschanged (70% word delta). - risky Description of
list-storeschanged (37% word delta). - breaking Field
min_scorewas removed fromlist-storesinput; consumers still sending it may be rejected or silently ignored. - risky Description of
search-allchanged (60% word delta).
2026-09-14 09:45risky
- Description of
check-domainchanged (29% word delta). - Description of
list-storeschanged (61% word delta). - Optional field
platformwas added tolist-stores; may shift model behaviour.
2026-09-01 16:49risky
- Description of
check-domainchanged (38% word delta).
2026-09-01 13:46breaking
- breaking Tool
add-to-cartwas removed. - breaking Tool
build-bundlewas removed. - risky Description of
get-product-detailschanged (25% word delta). - breaking Prompt
shop-for-productwas removed. - safe Prompt
resolve-storeswas added.
Snapshot log
The hashes to pin against. Identical contracts hash identically.
| Observed | Contract hash | Tools |
|---|---|---|
| 2026-09-24 15:42 | bcbfd3f88b5a | 8 |
| 2026-09-24 15:41 | 8ca2632d1b28 | 8 |
| 2026-09-15 16:17 | bcbfd3f88b5a | 8 |
| 2026-09-14 17:27 | 2ed0fbc80a83 | 8 |
| 2026-09-14 11:57 | 6745efc0c73a | 8 |
| 2026-09-14 09:45 | 780eda2ed276 | 8 |
| 2026-09-01 16:49 | e8c012cb5d0b | 8 |
| 2026-09-01 13:46 | f5552b75422a | 8 |
| 2026-08-31 06:05 | 04a1dc304954 | 10 |
Maintainer badge
Free forever for open-source maintainers. It reports what Zevruna actually observed, a green badge means no breaking change in ninety days, and it says so honestly when a server has never been polled.
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