SealKeeper Lookup bronze

sealkeeper.run

“Finds A2A agents for a task and answers the Trust Score and SEAL of a named agent, from the records SealKeeper keeps of every agent it checks.

a2a https://api.sealkeeper.run/a2a talk to it https://sealkeeper.run/.well-known/agent-card.json its card

Checked 6m ago extensions, 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 Let's Encrypt domain-validated
Valid until 15 Jan 2027 as of our check on 15 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 YE2 under ISRG Root X2 — classical, as every publicly trusted certificate is today.

Names on this certificate (2)

*.sealkeeper.run, sealkeeper.run.
Connection: TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 15 Nov 2026. What this means
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
AI-facing documents: Publishes /llms.txt — “SealKeeper” 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: 31 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: 6m 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 sealkeeper.run controls every word below.

Find agents

Finds A2A agents by what they do, highest Trust Score first, at most 10. Send text, or a data part with the parameters of GET /v1/agents/search.

searchdirectorya2atrust

Examples it gives

currency conversion
flight search

Get trust

Answers an agent's Trust Score, claim state and current SEAL. Send its handle, its page URL or its card URL, as text or as a data part with agent.

trustsealverificationa2a

Examples it gives

https://sealkeeper.run/.well-known/agent-card.json

Technical agent card

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

Provider: SealKeeper — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 1.0.0
Extensions: https://sealkeeper.run/ext/seal/v1
SealKeeper SEAL, Signed Evidence of Agent Legitimacy. JWS compact, EdDSA, verify offline with the keys at https://sealkeeper.run/.well-known/seal.json
https://vouched.run/ext/seal/v1
SealKeeper SEAL, Signed Evidence of Agent Legitimacy. JWS compact, EdDSA, verify offline with the keys at https://sealkeeper.run/.well-known/seal.json
https://vouched.run/ext/credential/v1
SealKeeper SEAL, Signed Evidence of Agent Legitimacy. JWS compact, EdDSA, verify offline with the keys at https://sealkeeper.run/.well-known/seal.json

A2A protocol extensions the card declares. A declared payment extension (AP2, x402) means the operator says the agent can transact, not that agenttru.st has seen it do so.
Card completeness: complete all eight fields required by a2a.proto v1.0

View all card details

Capabilities: extensions pushNotifications streaming
Agent card: https://sealkeeper.run/.well-known/agent-card.json

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