Atlas entry

`mrrledger.com`

26 capabilities over A2A and MCP. The inventory is incomplete. First atlas observation.

Observed 3 Nov 2026, 11:23 UTC · passive: no tools called, no credentials sent · sha256:f48476…576b

Capability facts

As observed from outside, at the time below

Observed: 3 Nov 2026, 11:23 UTC
Signed: 3 Nov 2026, 18:09 UTC

Protocols: A2A, MCP
Tools: 19
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

15 tools examined; 13 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	Valid	4 skills
MCP	Valid	2025-11-25 · 15 tools · 4 resources · 3 prompts
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
observed
Exact state: valid · 4 skills
A usable protocol document was retrieved and validated.
Directly observed
MCP
observed
Exact state: valid · Revision 2025-11-25 · 15 tools · 4 resources · 3 prompts
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

26 · inventory incomplete

Summary of the AI readings · beta

The service lists 15 capabilities, and 13 have AI readings.

13 capabilities are read as read-only, including todays_feature, search_businesses and list_categories.

Rows named: todays_feature · search_businesses · list_categories

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.

A2A skills 4

compare_businesses
get_business
leaderboard
search_businesses

MCP tools 15

benchmark_business
inputs category (required), full, months_live, mrr (required) and 1 more
AI Reads only 0.80
compare_businesses
inputs a (required), b (required)
export_dataset
inputs format, slug
get_business
inputs slug (required)
AI Reads only 0.90
get_category
inputs slug (required)
AI Reads only 0.90
get_growth
inputs slug (required)
AI Reads only 0.85
get_tag
inputs slug (required)
AI Reads only 0.88
hub_stats
AI Reads only 0.90
leaderboard
inputs category, limit, verified_only
AI Reads only 0.86
list_categories
inputs limit
AI Reads only 0.88
list_tags
inputs limit
AI Reads only 0.93
search_businesses
inputs category, cursor, limit, offset and 3 more
AI Reads only 0.89
search_lessons
inputs limit, query, theme
AI Reads only 0.90
todays_feature
AI Reads only 0.88
whats_new
inputs kind, limit, since, slug
AI Reads only 0.92

MCP resources 4

name not shown
name not shown
name not shown
name not shown

MCP prompts 3

benchmark_my_mrr
find_category_revenue
revenue_leaderboard

Not observed in this Passport: OpenAPI operations.

Declared and observed

15 tools declare hints; the AI readings agree with all 13 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, 11:23 UTC26 capabilities · A2A and MCP 2025-11-25 · MCP endpoint validFirst observation
Fingerprint and versions
Fingerprint
f484768547cd0adde3eabe5aa611862cf46c9289073cd73f9341d7530f35576b
Passport schema
0.5.0, passport-semantic-v4
Consistency
MCP_PROMPTS_ADVERTISEMENT_LIST: match · MCP_RESOURCES_ADVERTISEMENT_LIST: match · 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.mrrledger/mrrledger
Listed
Official MCP Registry · first listed 3 Nov 2026 · last listed 3 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: sha256:3594d757e9bf07c52e6491a3a55bd1639a71fde00347877c23adcd26889a12de
Locator SHA-256: e2ff8acd4105454d1d02545950873b6c55b650e7cb52dd192bf8183f3d89b2d1
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.