Atlas entry

`app.carrentalbrain.com`

6 capabilities over MCP. First atlas observation.

Observed 3 Nov 2026, 16:02 UTC · passive: no tools called, no credentials sent · sha256:3d3bb2…4a37

Capability facts

As observed from outside, at the time below

Observed: 3 Nov 2026, 16:02 UTC
Signed: 3 Nov 2026, 18:08 UTC

Protocols: MCP
Tools: 6
Declared sign-in: None declared

Effects counted AI readings, beta

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

6 tools examined; 0 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

Surfaces

5 protocols checked

ARD	Not found	No document retrieved
A2A	Not found	0 skills
MCP	Valid	2025-06-18 · 6 tools · resources not advertised · prompts not advertised
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 2025-06-18 · 6 tools · resources not advertised · prompts not advertised
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

Capabilities

6 · inventory complete

Summary of the AI readings · beta

The service lists 6 capabilities, and 5 have AI readings.

5 capabilities are read as read-only, including airport_costs, supplier_terms and get_capabilities.

Rows named: airport_costs · supplier_terms · get_capabilities

Written by code from the AI readings on this page: it groups them and says nothing they do not.

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.

MCP tools 6

airport_costs
inputs airport (required), month, trip_days
AI Reads only 0.84
build_search_link
inputs age, airport, automatic, car_type and 9 more
compare_airports
inputs airports, country, limit, month and 1 more
AI Reads only 0.86
get_capabilities
AI Reads only 0.80
list_airports
inputs country
AI Reads only 0.88
supplier_terms
inputs airport (required), supplier
AI Reads only 0.81

Not observed in this Passport: A2A skills, MCP resources, MCP prompts, OpenAPI operations.

Declared and observed

6 tools declare hints; the AI readings agree with all 5 that have a reading.

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

Atlas history

1 observation

3 Nov 2026, 16:02 UTC6 capabilities · MCP 2025-06-18 · MCP endpoint validFirst observation
Fingerprint and versions
Fingerprint
3d3bb22c7c681adadc87a2e7ce9b395017d3a315c8db3ecd87ca3075aadc4a37
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.

About this entry

com.carrentalbrain/car-rental-brain
Listed
Official MCP Registry · first listed 2 Nov 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:be76f00e33824d51a856efc598f83806aed0b1dfe4e7850bb1a966966add35d2
Locator SHA-256: 19024d5863818463fbd10a4de484bcf1713584a64e0b1082b64e1c2156e1ffa5
Snapshot generated: 4 Nov 2026, 00:59 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.