Atlas entry

`mcp.zip-codes.com`

12 capabilities over MCP. First atlas observation.

Observed 3 Nov 2026, 10:36 UTC · passive: no tools called, no credentials sent · sha256:5183cd…2198

Capability facts

As observed from outside, at the time below

Observed: 3 Nov 2026, 10:36 UTC
Signed: 3 Nov 2026, 18:32 UTC

Protocols: MCP
Tools: 12
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

12 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	2026-07-28 · 12 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 2026-07-28 · 12 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

12 · inventory complete

Summary of the AI readings · beta

The service lists 12 capabilities, and 9 have AI readings.

buy_credits is read as moving money.

8 capabilities are read as read-only, including about_data, county_reference and metro_area_reference.

Rows named: buy_credits · about_data · county_reference · metro_area_reference

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 12

about_data
AI Reads only 0.90
buy_credits
inputs api_key, credits, pack, price_usd
AI Moves money 0.90
city_name_rules
county_reference
inputs limit, state
AI Reads only 0.92
distance
inputs api_key, from (required), to (required)
metro_area_reference
inputs limit, state
AI Reads only 0.90
quick_zip
inputs api_key, code (required), include
AI Reads only 0.85
radius_search
inputs acs_years, api_key, code (required), include and 4 more
AI Reads only 0.80
suggest_places
inputs api_key, country, limit, near and 3 more
AI Reads only 0.87
validate_address
inputs address (required), api_key, include
zip_facts
AI Reads only 0.90
zip_lookup
inputs acs_years, api_key, code (required), include
AI Reads only 0.88

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

Declared and observed

12 tools declare hints; the AI readings agree with all 9 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, 10:36 UTC12 capabilities · MCP 2026-07-28 · MCP endpoint validFirst observation
Fingerprint and versions
Fingerprint
5183cd4404567c6ff4d163dc698b8684f4b70f093c2e92325f616825a0a52198
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.zip-codes/api
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: sha256:58c8bd8a0d16d466ed695e67f7e40dae8bc8930d95b8d0c8385a4c416a34d674
Locator SHA-256: 3e12592ea8c969b2ec7581a62e120cf3e99a4d02b09a375b2a94b1b34a447b82
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.