Atlas entry

`preview.coo.ee`

71 capabilities over MCP. The inventory is incomplete. First atlas observation.

Observed 10 Nov 2026, 09:05 UTC · passive: no tools called, no credentials sent · sha256:2d1bab…49c5

71 tools. 34 only read. 1 only computes. 17 change records, and 1 of those deletes or cancels. 19 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 71 tools, and 44 have AI readings.

11 tools are read as changing records, including ui_builder_set_links, ui_builder_move_design_home and ui_builder_share_design.

4 tools are read as creating records, including ui_builder_record_decision, ui_builder_branch_design and ui_builder_fork_design.

28 tools are read as read-only, including get-documentation-for-story, ui_builder_find_design_for_pr and catalog_list_devices.

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 52 of 71 MCP tools. 1 reads as deleting or cancelling.

Moves money
0
No tool read this way.
Deletes or cancels records
1 tool
- ui_builder_delete_design0.88
Sends messages to people
0
No tool read this way.
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 19 tools No reading was counted, so any effect above is possible for them: catalog_render_matrix, catalog_render_preview, poll_access, preview-stories, request_access, status, ui_builder_apply, ui_builder_archive_branch, ui_builder_check_design, ui_builder_compare_branches and 9 more.

What changed

First atlas observation. Atlas history

Look first

AI reading, beta: AI adds items here; it never removes one.

ui_builder_delete_designDeletes or cancels records · 0.88

Surfaces

5 protocols checked

ARD	Not found	No document retrieved
A2A	Not found	0 skills
MCP	Valid	2025-11-25 · 71 tools · 0 resources retained · listing incomplete · 0 prompts retained · listing incomplete
OpenAPI	Not detected	0 operations
WebMCP	Not detected	0 declarative form tools · experimental

Exact states and meaning

ARD
absent
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
A2A
absent
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
MCP
observed
Exact state: valid · Revision 2025-11-25 · 71 tools · 0 resources retained · listing incomplete · 0 prompts retained · listing incomplete
A usable protocol document was retrieved and validated.
Directly observed
OpenAPI
absent
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
WebMCP
absent
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

71 · inventory incomplete

Showing 71 of 71.

Tool and inputs							◇ AI reading, beta · confidence
Read as one of the six effects 1 AI only raises attention: these rows come first.
agentModel, agentName, designId*, token◇ AIDeletes or cancels records 0.88		Deletes or cancels records 0.88					Deletes or cancels records0.88
`ui_builder_delete_design` inputs `agentModel`, `agentName`, `designId` (required), `token` AI Deletes or cancels records 0.88
Read as none of the six 51 Not a clearance.
catalog, other*, otherOverrides, overrides and 3 more							Reads only0.85
`catalog_diff_semantics` inputs `catalog`, `other` (required), `otherOverrides`, `overrides` and 3 more AI Reads only 0.85
catalog, kind*, overrides, previewId and 2 more							Reads only0.80
`catalog_get_preview_data` inputs `catalog`, `kind` (required), `overrides`, `previewId` and 2 more AI Reads only 0.80
catalog, from, previewId, to and 2 more							Reads only0.88
`catalog_history_diff` inputs `catalog`, `from`, `previewId`, `to` and 2 more AI Reads only 0.88
catalog, previewId, token, uri							Reads only0.82
`catalog_history_list` inputs `catalog`, `previewId`, `token`, `uri` AI Reads only 0.82
blob, catalog, commit, previewId and 2 more							Reads only0.88
`catalog_history_read` inputs `blob`, `catalog`, `commit`, `previewId` and 2 more AI Reads only 0.88
projectId, token							Reads only0.85
`catalog_library` inputs `projectId`, `token` AI Reads only 0.85
catalog, previewId, token, uri							Reads only0.85
`catalog_list_data_products` inputs `catalog`, `previewId`, `token`, `uri` AI Reads only 0.85
token							Reads only0.81
`catalog_list_devices` inputs `token` AI Reads only 0.81
catalog*, limit, offset, query and 1 more							Reads only0.91
`catalog_list_previews` inputs `catalog` (required), `limit`, `offset`, `query` and 1 more AI Reads only 0.91
token							Reads only0.90
`catalog_list_projects` inputs `token` AI Reads only 0.90
id, storyId, token							Reads only0.80
`get-documentation-for-story` inputs `id`, `storyId`, `token` AI Reads only 0.80
token							Reads only0.83
`list-all-documentation` inputs `token` AI Reads only 0.83
agentModel, agentName, designId*, threadId and 1 more							Changes records0.80
`ui_builder_acknowledge_comment` inputs `agentModel`, `agentName`, `designId` (required), `threadId` and 1 more AI Changes records 0.80
afterSequence, agentModel, agentName, designId and 2 more							Reads only0.80
`ui_builder_await_comments` inputs `afterSequence` (required), `agentModel`, `agentName`, `designId` (required) and 2 more AI Reads only 0.80
afterSequence, agentModel, agentName, designId* and 4 more							Reads only0.85
`ui_builder_await_decision` inputs `afterSequence`, `agentModel`, `agentName`, `designId` (required) and 4 more AI Reads only 0.85
afterSequence, agentModel, agentName, designId and 3 more							Reads only0.90
`ui_builder_await_design` inputs `afterSequence` (required), `agentModel`, `agentName`, `designId` (required) and 3 more AI Reads only 0.90
agentModel, agentName, branchId, designId* and 3 more							Creates records0.85
`ui_builder_branch_design` inputs `agentModel`, `agentName`, `branchId`, `designId` (required) and 3 more AI Creates records 0.85
agentModel, agentName, designId*, differences and 5 more							Reads only0.80
`ui_builder_compare_reference` inputs `agentModel`, `agentName`, `designId` (required), `differences` and 5 more AI Reads only 0.80
agentModel, agentName, designId*, document and 5 more							Creates records0.82
`ui_builder_create_design` inputs `agentModel`, `agentName`, `designId` (required), `document` and 5 more AI Creates records 0.82
agentModel, agentName, designId*, token							Reads only0.88
`ui_builder_design_access` inputs `agentModel`, `agentName`, `designId` (required), `token` AI Reads only 0.88
a*, agentModel, agentName, b and 1 more							Reads only0.88
`ui_builder_diff_designs` inputs `a` (required), `agentModel`, `agentName`, `b` and 1 more AI Reads only 0.88
agentModel, agentName, pr*, token							Reads only0.84
`ui_builder_find_design_for_pr` inputs `agentModel`, `agentName`, `pr` (required), `token` AI Reads only 0.84
agentModel, agentName, designId*, newDesignId and 3 more							Creates records0.88
`ui_builder_fork_design` inputs `agentModel`, `agentName`, `designId` (required), `newDesignId` and 3 more AI Creates records 0.88
agentModel, agentName, designId*, includeCatalog and 2 more							Reads only0.90
`ui_builder_get_design` inputs `agentModel`, `agentName`, `designId` (required), `includeCatalog` and 2 more AI Reads only 0.90
agentModel, agentName, designId*, token							Reads only0.93
`ui_builder_get_guidelines` inputs `agentModel`, `agentName`, `designId` (required), `token` AI Reads only 0.93
agentModel, agentName, designId*, token							Reads only0.84
`ui_builder_get_links` inputs `agentModel`, `agentName`, `designId` (required), `token` AI Reads only 0.84
agentModel, agentName, designId*, rendered and 2 more							Reads only0.80
`ui_builder_guidelines_prompt` inputs `agentModel`, `agentName`, `designId` (required), `rendered` and 2 more AI Reads only 0.80
agentModel, agentName, designId*, includeExport and 2 more							Reads only0.88
`ui_builder_implementation_status` inputs `agentModel`, `agentName`, `designId` (required), `includeExport` and 2 more AI Reads only 0.88
agentModel, agentName, designId*, status and 1 more							Reads only0.90
`ui_builder_list_branches` inputs `agentModel`, `agentName`, `designId` (required), `status` and 1 more AI Reads only 0.90
agentModel, agentName, componentIds, full and 1 more							Reads only0.87
`ui_builder_list_catalogs` inputs `agentModel`, `agentName`, `componentIds`, `full` and 1 more AI Reads only 0.87
agentModel, agentName, designId*, token							Reads only0.88
`ui_builder_list_comments` inputs `agentModel`, `agentName`, `designId` (required), `token` AI Reads only 0.88
agentModel, agentName, cursor, limit and 1 more							Reads only0.90
`ui_builder_list_designs` inputs `agentModel`, `agentName`, `cursor`, `limit` and 1 more AI Reads only 0.90
agentModel, agentName, before, designId* and 2 more							Reads only0.90
`ui_builder_list_revisions` inputs `agentModel`, `agentName`, `before`, `designId` (required) and 2 more AI Reads only 0.90
agentModel, agentName, token							Reads only0.90
`ui_builder_list_trash` inputs `agentModel`, `agentName`, `token` AI Reads only 0.90
agentModel, agentName, branchId*, dryRun and 2 more							Changes records0.81
`ui_builder_merge_branch` inputs `agentModel`, `agentName`, `branchId` (required), `dryRun` and 2 more AI Changes records 0.81
agentModel, agentName, baseRevision, designId and 5 more							Changes records0.82
`ui_builder_move_design_home` inputs `agentModel`, `agentName`, `baseRevision` (required), `designId` (required) and 5 more AI Changes records 0.82
agentModel, agentName, token							Reads only0.80
`ui_builder_open` inputs `agentModel`, `agentName`, `token` AI Reads only 0.80
agentModel, agentName, designId*, token							Reads only0.80
`ui_builder_preview_catalog_recovery` inputs `agentModel`, `agentName`, `designId` (required), `token` AI Reads only 0.80
agentModel, agentName, assetKey, designId and 2 more							Changes records0.82
`ui_builder_put_asset` inputs `agentModel`, `agentName`, `assetKey` (required), `designId` (required) and 2 more AI Changes records 0.82
agentModel, agentName, commentId, designId and 3 more							Changes records0.86
`ui_builder_react_to_comment` inputs `agentModel`, `agentName`, `commentId` (required), `designId` (required) and 3 more AI Changes records 0.86
agentModel, agentName, decisionId, designId* and 5 more							Creates records0.80
`ui_builder_record_decision` inputs `agentModel`, `agentName`, `decisionId`, `designId` (required) and 5 more AI Creates records 0.80
agentModel, agentName, designId, title and 1 more							Changes records0.88
`ui_builder_rename_design` inputs `agentModel`, `agentName`, `designId` (required), `title` (required) and 1 more AI Changes records 0.88
agentModel, agentName, baseRevision, designId and 4 more							Changes records0.87
`ui_builder_replace_design_document` inputs `agentModel`, `agentName`, `baseRevision` (required), `designId` (required) and 4 more AI Changes records 0.87
agentModel, agentName, designId*, resolved and 2 more							Changes records0.84
`ui_builder_resolve_comment_thread` inputs `agentModel`, `agentName`, `designId` (required), `resolved` and 2 more AI Changes records 0.84
agentModel, agentName, baseRevision, designId and 4 more							Changes records0.88
`ui_builder_restore_revision` inputs `agentModel`, `agentName`, `baseRevision` (required), `designId` (required) and 4 more AI Changes records 0.88
agentModel, agentName, catalog, catalogSystemId and 2 more							Reads only0.85
`ui_builder_search_components` inputs `agentModel`, `agentName`, `catalog`, `catalogSystemId` and 2 more AI Reads only 0.85
agentModel, agentName, designId*, issue and 5 more							Changes records0.87
`ui_builder_set_links` inputs `agentModel`, `agentName`, `designId` (required), `issue` and 5 more AI Changes records 0.87
agentModel, agentName, clear, density and 5 more							Changes records0.85
`ui_builder_set_reference` inputs `agentModel`, `agentName`, `clear`, `density` and 5 more AI Changes records 0.85
actorId, agentModel, agentName, designId* and 4 more							Changes records0.80
`ui_builder_share_design` inputs `actorId`, `agentModel`, `agentName`, `designId` (required) and 4 more AI Changes records 0.80
agentModel, agentName, baseRevision, designId and 3 more							Computes only, changes nothing0.90
`ui_builder_validate` inputs `agentModel`, `agentName`, `baseRevision`, `designId` and 3 more AI Computes only, changes nothing 0.90
agentModel, agentName, designId*, include and 6 more							Reads only0.88
`ui_builder_view` inputs `agentModel`, `agentName`, `designId` (required), `include` and 6 more AI Reads only 0.88
No counted reading 19 No reading was counted, so any effect is possible.
axes*, catalog, observe, overrides and 3 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`catalog_render_matrix` inputs `axes` (required), `catalog`, `observe`, `overrides` and 3 more
catalog, observe, overrides, previewId and 2 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`catalog_render_preview` inputs `catalog`, `observe`, `overrides`, `previewId` and 2 more
deviceSecret, requestId, urlMode, waitSeconds	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`poll_access` inputs `deviceSecret` (required), `requestId` (required), `urlMode`, `waitSeconds`
id, ids, observe, overrides and 3 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`preview-stories` inputs `id`, `ids`, `observe`, `overrides` and 3 more
capabilities, label, scope, ttlSeconds	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`request_access` inputs `capabilities`, `label`, `scope`, `ttlSeconds`
token	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`status` inputs `token`
agentModel, agentName, baseRevision*, clientId and 4 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_apply` inputs `agentModel`, `agentName`, `baseRevision` (required), `clientId` and 4 more
agentModel, agentName, branchId*, token	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_archive_branch` inputs `agentModel`, `agentName`, `branchId` (required), `token`
agentModel, agentName, baseRevision, checks and 6 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_check_design` inputs `agentModel`, `agentName`, `baseRevision`, `checks` and 6 more
agentModel, agentName, branchIds, designId* and 3 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_compare_branches` inputs `agentModel`, `agentName`, `branchIds`, `designId` (required) and 3 more
agentModel, agentName, designId*, format and 2 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_export` inputs `agentModel`, `agentName`, `designId` (required), `format` and 2 more
agentModel, agentName, branchIds, designId* and 3 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_pick_branch` inputs `agentModel`, `agentName`, `branchIds`, `designId` (required) and 3 more
agentModel, agentName, body, designId and 7 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_post_comment` inputs `agentModel`, `agentName`, `body` (required), `designId` (required) and 7 more
agentModel, agentName, asked, designId and 5 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_record_guidelines` inputs `agentModel`, `agentName`, `asked` (required), `designId` (required) and 5 more
agentModel, agentName, designId*, devices and 6 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_render_design_matrix` inputs `agentModel`, `agentName`, `designId` (required), `devices` and 6 more
agentModel, agentName, designId*, revision and 1 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_render_native` inputs `agentModel`, `agentName`, `designId` (required), `revision` and 1 more
agentModel, agentName, designId*, token	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_restore_design` inputs `agentModel`, `agentName`, `designId` (required), `token`
agentModel, agentName, designId*, pr and 4 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_set_implementation` inputs `agentModel`, `agentName`, `designId` (required), `pr` and 4 more
actions, agentModel, agentName, designId* and 2 more	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`ui_builder_simulate_action` inputs `actions`, `agentModel`, `agentName`, `designId` (required) and 2 more

Read as this effect No reading: unknown Not read as this effect◇ AI readings, beta. A zero is a count, not a clearance.

MCP resources 0+ observed

Inventory incomplete. The displayed count is a lower bound; missing items do not prove removal.

None recorded in this Passport.

MCP prompts 0+ observed

Inventory incomplete. The displayed count is a lower bound; missing items do not prove removal.

None recorded in this Passport.

Not observed in this Passport: A2A skills, 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

10 Nov 2026, 09:05 UTC71 capabilities · MCP 2025-11-25 · MCP endpoint truncated · 2 incomplete inventory groupsFirst observation
Fingerprint and versions
Fingerprint
2d1bab7f400402ce086652cdb1c8a5addd15f586a5d16508c07e22820c1149c5 (incomplete)
Passport schema
0.5.0, passport-semantic-v4
Consistency
MCP_PROMPTS_ADVERTISEMENT_LIST: indeterminate · MCP_RESOURCES_ADVERTISEMENT_LIST: indeterminate · 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

No tools declare hints.

A disagreement is not a finding about the service: either side can be wrong. How we compare declarations and readings.

About this entry

io.github.yschimke/compose-preview
Listed
Official MCP Registry · first listed 10 Nov 2026 · last listed 10 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: sha256:57ec45b186cd2055ea35de2b2e075cd37b986069fd47bf5afe84ac478b001190
Locator SHA-256: df63e27c36af0cda2aab459242be1e22c812e17ea17f99e0b63c087f29e8c47f
Snapshot generated: 11 Nov 2026, 22:36 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.

Capability facts

As observed from outside, at the time below

Observed: 10 Nov 2026, 09:05 UTC
Signed: 10 Nov 2026, 10:41 UTC

Protocols: MCP
Tools: 71
Declared sign-in: None declared

Effects counted AI readings, beta

Moves money: 0
Deletes or cancels records: 1
Sends messages to people: 0
Changes permissions: 0
Runs code: 0
Asks a person: 0

71 tools examined; 47 counted above a measured threshold.

Declared vs read disagreements

Declared read-only, read as writing: 0
Declared destructive, read as not writing: 0
Declared non-destructive, read as deleting: 0
Declared closed-world, read as reaching out: 0

Change since previous: First observation
Label status: Current