Public Agent Card

Stamp

This profile reflects information published by the agent provider.

Card passedA2A respondingUnsigned card

About this agent

Stamp checks a domain's email authentication from live DNS: SPF with the 10-lookup limit, DMARC, DKIM keys and MX. It says whether you meet the Gmail, Yahoo and Outlook sender rules and gives you the exact DNS records to fix what is wrong. No account.

LocalMark's observation

LocalMark first listed this public Agent Card on 07 Nov 2026, 22:23 UTC. Its latest card check succeeded. The card declares 2 skills and a JSONRPC interface. LocalMark has not run a production A2A task. Explicitly opted-in synthetic tests are shown separately.

Read the original Agent Card ↗

What LocalMark checked

  • Published Agent Card

    Inspect the source card ↗. The last successful fetch was 07 Nov 2026, 22:23 UTC.

  • Latest card check: passed

    07 Nov 2026, 22:23 UTC · Agent Card validated

  • Advertised endpoint: TLS connection passed

    07 Nov 2026, 22:23 UTC · Valid TLS connection to advertised endpoint host; no A2A request sent This does not test the A2A protocol or run a task.

  • Read-only protocol probe: A2A task lookup response received

    07 Nov 2026, 22:23 UTC · A2A task-not-found response to a read-only task lookup LocalMark sent no message and did not request task creation.

  • Unsigned card

    This card does not provide a digital signature. Checked 07 Nov 2026, 22:23 UTC.

  • 30-day card check history

    1 of 1 recorded card checks passed in the last 30 days. These are periodic observations, not continuous uptime monitoring.

  • Publisher claim

    No publisher claim has been completed for this listing.

Card availability and a valid signature do not prove provider identity, task performance, or safety. Opt-in synthetic fixture results, if any, are shown separately from these read-only observations.

Advertised connection checks

The selected connection uses an address advertised in the publisher card. Read-only observations do not establish task quality or safety.

  • JSONRPC · 1.0 · Selected connection

    https://stamp.clawhard.com/a2a

    A2A response confirmed · 07 Nov 2026, 22:23 UTC

    A2A task-not-found response to a read-only task lookup

  • JSONRPC · 0.3

    https://stamp.clawhard.com/a2a

    A2A response confirmed · 07 Nov 2026, 22:23 UTC

    A2A task-not-found response to a read-only task lookup

Up to three supported interfaces are checked per cycle. Authentication requirements, unsupported transports and generic HTTP errors are not protocol confirmation.

Repair connection or request a recheck →

Publisher-authorized synthetic tests

Publisher: set up test evidence →

No current fixture result · Not yet checked

A publisher-authorized synthetic test of a dedicated free test endpoint. It does not establish general capability, production task success, safety, ownership, identity, or the behaviour of the advertised A2A endpoint.

Consent: not confirmed.

Recent fixture observations
  • No fixture tests recorded.

Results, consent dates and hashes as JSON · Method, fixtures and publisher opt-in →

Recent card checks

Periodic observations over the last 30 days; they are not continuous uptime monitoring.

Show 1 recent check
  • Passed · 07 Nov 2026, 22:23 UTC

    Agent Card validated

View the 30-day check log as JSON →

Card and signature changes

  • No changes recorded since change tracking began.

View detailed card versions → · Subscribe to card changes

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LocalMark status badge

README Markdown:

[![LocalMark status](https://localmark.ai/badge/568600.svg)](https://localmark.ai/agents/568600)

Card-declared connections

These links come from statements in public Agent Cards. They do not verify common ownership or cooperation.

  • No card-declared connections recorded yet.

View all connections as JSON →

Declared skills 2

  • Check a domain's email authentication (SPF, DKIM, DMARC, MX) from live DNS

    Use when the user asks why their email goes to spam, whether their domain is set up to send email, or before they launch a newsletter, cold outreach, transactional email or a new sending service, e.g. "why are my emails going to spam?", "is my SPF/DKIM/DMARC right?", "do I meet Gmail and Yahoo's sender requirements?" or "I added SendGrid, did I break SPF?".

    stampDeveloperApplicationread-only
  • Check an SPF, DMARC or DKIM record before publishing it

    Use when you or the user are about to publish or edit an SPF, DMARC or DKIM TXT record, for example after writing a new SPF record that adds a sending service, or when the user pastes a record and asks "is this right?". Detects the record type. SPF: syntax per RFC 7208, every include and redirect followed live in DNS and counted against the 10-lookup limit, void lookups, loops, the final all;

    stampDeveloperApplicationread-only