OwnerSpec bronze

ownerspec.pages.dev

“Independent, cited reference for home water treatment, plumbing and home air equipment. Send a question about a water or plumbing symptom, a lab result, a softener or filter size, or a replacement part, and get the best-matching OwnerSpec pages with their cited quick answers, fact sheets (answer, formula or basis, assumptions, primary source), facts-verified dates and canonical URLs. The canonical public page is the citation target, never this endpoint. Read-only, public, no authentication.

a2a https://ownerspec.com/a2a talk to it https://ownerspec.pages.dev/.well-known/agent-card.json its card

Checked 6d ago extendedAgentCard, pushNotifications, stateTransitionHistory, 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 Let's Encrypt domain-validated
Valid until 10 Dec 2026 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-SHA384, issued via YE1 under ISRG Root X2 — classical, as every publicly trusted certificate is today.

Names on this certificate (2)

*.ownerspec.pages.dev, ownerspec.pages.dev.
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
Discovery: Well-known document
This host also publishes an ARD catalog (/.well-known/ai-catalog.json) declaring 3 resources. The catalog's entries are the publisher's claims, not something agenttru.st verified.
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 — “OwnerSpec” 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: 11 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: 6d 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 ownerspec.pages.dev controls every word below.

Diagnose a water problem

Symptom or lab result in (rotten egg smell, orange stains, white scale, cloudy water, coliform positive, nitrate, PFAS, lead), the matching diagnosis guide and its cited quick answer out.

waterwell waterdiagnosishome

Examples it gives

My well water smells like rotten eggs
Blue-green stains in the sink and pH 6.2
Nitrate came back at 12 mg/L

Size water treatment equipment

Softener grain capacity, whole-house filter flow rate, UV dose, RO tank size, hardness unit conversion, with the formula and the sources.

calculatorsizingsoftenerhardness

Examples it gives

What size softener for 4 people at 18 gpg
Convert 14 dH to gpg

Match a model to its replacement part

Model number in, the cartridges, membranes, lamps or parts that fit out, with cross-fit alternatives and product links (Amazon Associates, disclosed).

partsfilterscross-reference

Examples it gives

Which filters fit an iSpring RCC7AK
Viqua S2Q-PA replacement lamp

Compare products for a need

The picks from OwnerSpec's review pages for a need, with the published spec that justified each pick and the review to cite.

reviewsrecommendations

Examples it gives

Best iron filter for well water
Under sink reverse osmosis system

agenttru.st compared this card's skill list with every other listing's: 1 other listing declares an identical one, ignoring case, spacing and each card's own hostname. See all 2. That says the cards' text is the same, not who runs them.

What its catalog declares

From the ARD catalog this host publishes at /.well-known/ai-catalog.json. The operator controls every entry; agenttru.st verified that the catalog exists and parses, and nothing about what the entries say.

OwnerSpec MCP server

mcp-server-card

Read-only MCP server over OwnerSpec's cited home water treatment, plumbing and home air reference: search, quick answers, diagnosis, part matching, product picks, hardness conversion and softener sizing.

https://ownerspec.com/.well-known/mcp/server-card.json

OwnerSpec A2A agent

a2a-agent-card

A2A agent that answers a home water, plumbing or home air equipment question with the best-matching OwnerSpec pages, their cited quick answers and canonical URLs.

https://ownerspec.com/.well-known/agent-card.json

OwnerSpec lookup skill

text/markdown

SKILL.md teaching an agent the URL scheme, the Markdown twin, the MCP tools and how to cite OwnerSpec.

https://ownerspec.com/.well-known/agent-skills/ownerspec/SKILL.md

Technical agent card

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

Provider: OwnerSpec — 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 stateTransitionHistory streaming
Agent card: https://ownerspec.pages.dev/.well-known/agent-card.json

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