{"protocolVersion":"0.3.0","name":"ShardLink Control Plane","description":"Authoritative ShardLink workspace coordination surface for capability discovery, dual-plane contracts, and controlled REST action execution.","author":"ShardLink","wellKnownURI":"https://app.clawspan.cloud/.well-known/agent-card.json","url":"https://app.clawspan.cloud/a2a/jsonrpc","version":"1.0.0","provider":{"organization":"ShardLink","url":"https://app.clawspan.cloud/"},"documentationUrl":"https://app.clawspan.cloud/v1/capabilities/graph","iconUrl":"https://app.clawspan.cloud/brand/agent-card-icon.png","supportsAuthenticatedExtendedCard":null,"security":[],"securitySchemes":{"bearerAuth":{"type":"http","scheme":"Bearer","description":"Bearer actor, service, or user session token.","bearerFormat":"JWT"},"controlPlaneAdminKey":{"in":"header","name":"x-control-plane-key","type":"apiKey","description":"Breakglass admin key when enabled for the control plane."}},"capabilities":{"streaming":true,"pushNotifications":false,"stateTransitionHistory":false,"extensions":null},"defaultInputModes":["text/plain","application/json"],"defaultOutputModes":["text/plain","application/json"],"skills":[{"id":"discover_capability_graph","name":"Discover Capability Graph","description":"Return the latest or pinned ShardLink capability graph with MCP and A2A protocol surfaces.","tags":["discovery","contracts","capability-graph","mcp","a2a"],"examples":["Get the latest ShardLink capability graph.","Return capability graph version 2026-03-04.v1."],"inputModes":[],"outputModes":[]},{"id":"inspect_dual_plane_contract","name":"Inspect Dual Plane Contract","description":"Return the split-authority contract that defines ShardLink and SignalHub boundaries.","tags":["contracts","dual-plane","governance"],"examples":["Show the dual-plane contract.","Describe the ShardLink and SignalHub authority split."],"inputModes":[],"outputModes":[]},{"id":"inspect_error_catalog","name":"Inspect Error Catalog","description":"Return deterministic error metadata, retryability, and idempotency semantics for machine callers.","tags":["contracts","errors","retry","idempotency"],"examples":["List deterministic error metadata.","Show retryable ShardLink error codes."],"inputModes":[],"outputModes":[]},{"id":"list_action_descriptors","name":"List Action Descriptors","description":"Return the A2A action descriptor catalog derived from the canonical ShardLink capability graph.","tags":["discovery","actions","a2a","execution"],"examples":["List ShardLink A2A actions.","Show the action descriptors for machine execution."],"inputModes":[],"outputModes":[]},{"id":"invoke_capability_action","name":"Invoke Capability Action","description":"Proxy a capability action to the canonical REST route with preserved auth, lease, and idempotency behavior.","tags":["execution","rest","idempotency","leases"],"examples":["Invoke a public ShardLink capability action.","Call a ShardLink workspace action with path params and body."],"inputModes":[],"outputModes":[]},{"id":"read_workspace_status","name":"Read Workspace Status","description":"Inspect workspace objective, task, directory, and bridge-read surfaces through A2A.","tags":["status","workspace","tasks","bridge"],"examples":["Read a task status.","Read the workspace directory."],"inputModes":[],"outputModes":[]},{"id":"execute_provider_quote","name":"Execute Provider Quote","description":"Access provider quote and execution routes through A2A while preserving lease and funding policy.","tags":["providers","billing","execution","lease"],"examples":["Create a provider quote for a workspace.","Execute a provider quote with an idempotency key."],"inputModes":[],"outputModes":[]}],"conformance":true,"conformance_errors":null,"homepage":null,"repository":null,"license":null,"pricing":null,"contact":null,"id":"c9330e43-a198-4b67-bf63-7e4227dcde7c","created_at":"2026-07-20T03:34:08.187843Z","updated_at":"2026-10-13T00:13:18.997870Z","hidden":false,"flag_count":0,"maintainer_notes":"Verified working at registration. Agent responds to `message/send` correctly via the A2A SDK.","category":"agent-orchestration","category_secondary":null,"uptime_percentage":100.0,"avg_response_time_ms":1586,"last_health_check":"2026-10-13T00:13:18.362907Z","is_healthy":true,"status_notes":[],"task_conformance":{"category":"WORKING","passed":true,"checked_at":"2026-10-12T07:07:12.228935Z","response_ms":1072}}