Apostra buyer agent identity bronze

api.staging.interchange.io

“This buyer agent's AdCP signing identity: its brand.json and the origin of its signing keys.

a2a https://api.staging.interchange.io talk to it https://api.staging.interchange.io/.well-known/agent-card.json its card

✓ 🇺🇸 US · Google LLC ✓ Checked 3d ago “ extensions, pushNotifications, streaming

✓ we checked this   “ the operator says this

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 24 Jan 2027 as of our check on 11 Nov 2026.

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

Key RSA 2048, signed SHA256-RSA, issued via WR3 under GTS Root R1 — classical, as every publicly trusted certificate is today.

Names on this certificate (1)

api.staging.interchange.io.

Connection

TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 11 Nov 2026. What this means

DANE / TLSA

Not verified (TLSA query returned RCodeNameError)

Discovery

Well-known document

AI-facing documents

Publishes /llms.txt — “Apostra documentation” 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

7 Oct 2026

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 api.staging.interchange.io controls every word below.

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 kind of listing

• Test or staging name: Its hostname carries the label “staging”, a name commonly given to test and staging sites.

Checked by agenttru.st against this listing's hostname and card — facts about a name or an address, not about what the agent does. How kinds are decided.

Technical agent card

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

Protocol

a2a

Version

1.0.0

Extensions

https://adcontextprotocol.org/extensions/adcp/v3

AdCP structured task invocation profile

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

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