Reference implementation Data compiled from public sources as of 2026-10-26. Not an assessment, certification or recommendation. Confirm current status with the vendor and the issuing body.
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Trace · registry probe · T1 reproducible run

Registry probe of Pydantic API Catalog's discovery endpoints

Pydantic API Catalog · 2026-10-11 · AgentDossier refresh · harness probe-1.0

Scenario. Fetch and validate the ARD manifest, A2A agent card and MCP server card at the publisher's well-known paths

Observed. ARD verified

EntryGET on the publisher's well-known discovery paths
Actionsserved Agentic Resource Discovery (ARD) document
Egressno
Human approval—
Secrets touchedno
Bundlebundles/tr_st_532fed6cb505a327_4d5abccf · sha256:cb4442ed09e0eb51dad5134e7407cac3e750b1665b88d9e09f961b143b2b6664 · download (JSON)
Chainsha256:9c5ff6d4d653d0a560f19e7ee0171e888da47e832d1e4166c9572a01d3a4ae9c
prev sha256:413e56f70b3527cfe996059729e6c147bbc6b03d9c38ef9ea53b7ac5a15f5804

Transcript

# Probe transcript — Pydantic API Catalog

Agent `res_532fed6cb505a327` · publisher domain `pydantic.dev` · 2026-10-11 · harness probe-1.0

## Agentic Resource Discovery (ARD)

- requested `https://pydantic.dev/.well-known/ard.json`
- result: **verified**

---
Observation only: the registry fetched public well-known paths and validated the documents against the protocol specifications. No credentials, no message exchange beyond discovery, nothing written.

Produced automatically on every refresh; a new bundle is written only when the observation changes

A trace describes one version on one date. It is evidence of behaviour, never a certification. Dispute it through the agent's dossier; corrections are appended, never overwritten.