generated: '2026-08-26' method: probed source: https://www.rhombus.com/.well-known/agent-card.json discovery: path: /.well-known/agent-card.json canonical: true host: www.rhombus.com note: >- Rhombus serves the card at BOTH the canonical A2A 1.0.0 path and the pre-0.3 legacy /.well-known/agent.json path (also HTTP 200, saved as well-known/rhombus-systems-agent-legacy.json). The canonical document is the one graded here. x-evidence: fetched: '2026-08-26' url: https://www.rhombus.com/.well-known/agent-card.json http_status: 200 content_type: application/json bytes: 2751 host_is_catch_all: false catch_all_control: >- https://www.rhombus.com/.well-known/openid-configuration returned 404, so this host does not answer 200 for arbitrary /.well-known/* paths. conformance: spec: A2A 1.0.0 grade: conformant protocol_version: 0.3.0 preferred_transport: JSONRPC hard_checks: capabilities_is_object: true protocol_version_present: true skills_is_array: true optional_fields: preferred_transport: true default_input_modes: true default_output_modes: true deviations: [] card: name: Rhombus version: 1.0.0 url: https://api2.rhombussystems.com/api documentation_url: https://api-docs.rhombus.community/ provider_organization: Rhombus provider_url: https://www.rhombus.com capabilities: streaming: false push_notifications: true security_schemes: - apiKey - oauth2 skills: - id: camera-operations name: Camera operations - id: access-control name: Access control - id: sensors name: Sensors and environment - id: alerts-events name: Alerts and events - id: ai-video-search name: AI video search notes: - >- The card's declared url (https://api2.rhombussystems.com/api) is the REST API base, not a JSON-RPC A2A endpoint, and preferredTransport is JSONRPC. Rhombus's own description says the card fronts "the Rhombus public REST API and MCP server" — treat the card as a discovery document for those two surfaces rather than as an A2A message endpoint. - >- The card's oauth2 scheme declares an empty scopes object; Rhombus publishes no OAuth scope vocabulary (see authentication/rhombus-systems-authentication.yml).