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zipexplore mcp

io.github.andrew-sondgeroth/zipexplore-mcp

US ZIP code intelligence: demographics, weather, tax, crime, housing, voting, and more.

— the operator's own registry description reported

Publisher io.github.andrew-sondgeroth · first seen 2026-08-12 · endpoint https://mcp.zipexplore.com/mcp

allow
verdict
stale-mid-solo
cluster
ok_tools
answers
22
tools served

Dependency rating derived

allow
allow — alive & usable · retrieval-public ● · V3 has answer key ◐
allow — because answers ●, 22 tools legible (band B) ●, no confirmed drift in 2 probes ●; not yet checked: truth (2 attempts unverifiable, 0 disagreements)

Cluster stale-mid-solo · distinctiveness 0.453 (moderate). Every figure is a percentile or class within the 11,094-server censussee the whole spectrum.

Does it answer? Q1 · observed
answersalive_tools
latency213 ms
vs populationtypical
protocolbehind
authopen
Can it be used? Q4 · observed
tools22
vs populationmid
capabilities4
harnessB
Did it hold when checked? Q3–Q4 · derived
identitysolo
servers on its host1
verifiabilityunassessed
duplicate inventoryno
drift events0
answers true0/0 agree

🔏 Signed receipt rr_f4cacf9a151b3c854d2d9457 · ed25519 · key rs-rcpt-2026-08 — this rating is tamper-evident; an agent gets the full signature from check_server and can verify it against the published key.

Q1Does it answer?alive & usable — 2 probes ●evidence ↓
Q2What is it?retrieval-public ● evidence ↓
Q3Can it be checked?V3 has answer key ◐evidence ↓
Q4Did it hold?harness B · truth not yet run · no drift ●evidence ↓
Q5What company does it keep?stale-mid-solo · 1 on its host (context, not verdict) ◐evidence ↓

● observed · ◐ derived · ○ reported — the verdict synthesizes Q1–Q4; Q5 is context. Methodology →

History observed

Every probe we made, oldest → newest (2 shown, 2026-08-12 → 2026-08-14). Green answered · amber answered-but-walled · red no useful answer. A gap in our cadence is a gap in coverage, not evidence about the server.

changelog (1 events)
datetypewhat changed
2026-08-12outcomefirst probe: ok_tools

What kind of tools these are derived

Verification only means something relative to a tool's NATURE — an email-sender has no "true answer", a generator has no answer key. Classification evidence: classified from tool names/descriptions/annotations WE OBSERVED. What checking applies to each kind (the full methodology →):

naturetoolsmeaning what checking applies
retrieval-public18serves public factstruth-checkable against a public source — the V-ladder applies in full
action2changes the worldno true answer exists; we check the CONTRACT (destructive/read-only/idempotent declarations, error legibility) and never fire real actions
computational1deterministic transformsself-checkable by re-computation and known-answer tests
unclassified1not classifiable from its textTier-1 only until its tools describe themselves

Tools last seen observed

compare_zips get_air_quality_profile get_article get_business_profile get_census_profile get_cost_profile get_crime_profile get_disaster_risk_profile get_education_profile get_healthcare_profile get_methodology get_research get_search_fields get_tax_profile get_transit_profile get_voting_profile get_weather_profile get_zip_centroids get_zip_profile ping reverse_geocode search_zips

Harness readiness observed

Can an agent's harness pick this tool and call it correctly? Graded on the three things an agent reads — name, description, typed parameters. Band B — usable, with rough edges.

legibility checktools passingok
name is clear & specific22/22
has a description22/22
description is substantive22/22
parameters are typed22/22
parameters are described4/224/22

22 of 22 tools graded · 22 with a captured input schema. RS-008, Tier-1 — no domain knowledge, applies to any tool. “Alive” is not the same as “usable”.

Truth checks observed

Not yet confirmed — 2 attempt(s) currently unverifiable (rate limits, walls, or unmappable schemas — never counted against the server) · 0 disagreements.

claim classkeyverdictprimary source
tariff-duty6109.10.00unverifiableus-hts
tariff-duty8471.30.01unverifiableus-hts

Protocol conformance observed

2025-03-26
protocol version
session model
1.9.4
server version ZipExplore

Capabilities: experimental prompts resources tools

Drift observed

No confirmed drift on record. Baseline set 2026-08-14; changes appear here after human review.

raw probe records
probed (UTC) outcomehttpmsprotocol
2026-08-14T19:59:22Zok_tools2002132025-03-26
2026-08-12T05:34:35Zok_tools2001562025-03-26

Watch or embed this verdict

verdict badge

Operators: put the live verdict in your README — it updates with every census, links back here, and is a dated observation, never a warranty:

[![Robin Saige verdict](https://robinsaige.com/badge/io.github.andrew-sondgeroth/zipexplore-mcp.svg)](https://robinsaige.com/s/io.github.andrew-sondgeroth/zipexplore-mcp)

Depend on it? Subscribe to its change feed — outcome changes and confirmed drift, no account needed. Building on it? The full dossier as JSON — verdict, rating, truth checks, history — stable enough to gate CI on.

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