CAZ Cost bronze

caz-cost.rowb.app

“What UK Clean Air Zones charge: the daily rates each council publishes, and what a trip through them costs. This service is a plain REST API and an MCP server over Streamable HTTP - it is NOT an A2A JSON-RPC agent. Docs at the documentationUrl.

https://caz-cost.rowb.app/.well-known/agent-card.json its card

Checked 5d ago extendedAgentCard, pushNotifications, streaming

we checked this the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Google Trust Services domain-validated
Valid until 2 Jan 2027 as of our check on 9 Nov 2026. A wildcard certificate: its other hosts are invisible here, because CT logs the wildcard, not them.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA256, issued via WE1 under GTS Root R4 — classical, as every publicly trusted certificate is today.

Names on this certificate (3)

rowb.app, caz-cost.rowb.app, *.caz-cost.rowb.app.
Connection: TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 9 Nov 2026. What this means
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
AI use policy: Search: yesAI input: yesAI training: no

What this site's robots.txt says about how AI may use its content. Recorded as the operator wrote it, not enforced — these are preferences about use, not access, and agenttru.st only reads the agent's own discovery documents.
AI-facing documents: Publishes /llms.txt — “CAZ Cost” a curated map of the site's content for language models

Fetched from this host during verification. Neither document is how this agent was discovered.
First seen: 4 Oct 2026

View verification details

Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: ? Unknown · Cloudflare, Inc. (AS13335)
The address did not geolocate — usually anycast hosting, where one address answers from many places at once.
Last checked: 5d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of caz-cost.rowb.app controls every word below.

list_zones

List every UK Clean Air Zone with the daily charge each council publishes, per vehicle class, plus the London Congestion Charge and ULEZ which are separate schemes.

mcp

zone_charges

Get one zone by id: its daily charge for each vehicle class, its notes, its penalty figures and the source URLs the numbers came from.

mcp

trip_cost

Cost one trip through a zone: daily rate x days, plus the penalty if it went unpaid. Returns chargeable=false when that vehicle class is not charged, and lists the zones where it would be.

mcp

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider: rowb.app — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 1.0.0
Card completeness: complete all eight fields required by a2a.proto v1.0

View all card details

Capabilities: extendedAgentCard pushNotifications streaming
Agent card: https://caz-cost.rowb.app/.well-known/agent-card.json

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