agents.txt Reference Agent bronze

agents-txt.com

“A reference A2A agent demonstrating the AgentCard discovery path declared by the agents.txt standard. Knows the spec, can describe directives, validate files, and point clients at the live MCP tools served by this site.

a2a https://agents-txt.com/a2a talk to it https://agents-txt.com/.well-known/agent-card.json its card

Checked 1d ago extensions, 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 Google Trust Services domain-validated
Valid until 9 Dec 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.
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
AI use policy: Search: yesAI input: noAI 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 — “agents.txt Standard” a curated map of the site's content for language models

Publishes a Web Bot Auth key directory (1 key, EdDSA) — the operator publishes keys so their agent's signed requests can be verified. agenttru.st recorded that the directory exists; it has not verified a signature.

Fetched from this host during verification. Neither document is how this agent was discovered.
First seen: 10 Sep 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: 1d 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 agents-txt.com controls every word below.

Explain an agents.txt directive

Returns the spec section text for a named directive (Protocols, Authorization, MCP, Skills, A2A, etc.) plus an example and the relevant section number.

specagents.txtdocumentation

Examples it gives

What does the Protocols: directive mean?
Show me the spec for the A2A block.
Where is Identity: required defined?

Validate agents.txt and agents.json

Runs the spec validators against a site's discovery files and returns a compliance report. Delegates to the audit_site MCP tool exposed at mcp.agents-txt.com.

validationauditcompliance

Examples it gives

Validate https://example.com/agents.txt
Audit example.com for agents.txt spec compliance

Explain an announced payment protocol

Returns a plain-language explanation of any payment protocol the site declares (x402, mpp, ap2): what it is, what role it plays, where the runtime details live, and how it composes with the others.

paymentsx402mppap2documentation

Examples it gives

What does ap2 mean in this site's agents.txt?
How does AP2 compose with x402?
Explain MPP versus x402.

Summarize a site's agent capabilities

Reads agents.txt and agents.json from a target origin, summarizes the declared payment protocols, authorization scheme, MCP endpoints, skill packages, and A2A AgentCards in plain language.

discoverycapabilitiessummary

Examples it gives

What can an agent do on agents-txt.com?
List the capabilities declared at example.com

Technical agent card

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

Provider: agents.txt contributors — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 1.0.0
Extensions: x402 https://github.com/google-agentic-commerce/a2a-x402/blob/main/spec/v0.2
Supports payments using the x402 protocol for on-chain settlement. Mirrors the x402 declaration in this site's agents.txt and agents.json.
AP2 https://github.com/google-agentic-commerce/AP2
Supports the Agent Payments Protocol (AP2) mandate layer (CheckoutMandate, PaymentMandate) for non-repudiable agent-initiated payments. Mirrors the ap2 declaration in this site's agents.txt and agents.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: a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

View all card details

Capabilities: extensions pushNotifications stateTransitionHistory streaming
Agent card: https://agents-txt.com/.well-known/agent-card.json

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