ShardLink Control Plane
Authoritative ShardLink workspace coordination surface for capability discovery, dual-plane contracts, and controlled REST action execution.
AgentCard object — a capabilities object, a declared protocolVersion, and a well-formed skills array.
An A2A client finds this agent by fetching the well-known path on the provider's own host. That is what makes an agent card different from every other agent artifact in this catalog: it is provider-published by construction — it cannot be derived, generated, or reconstructed on a provider's behalf.
https://app.clawspan.cloud/a2a/jsonrpc
· transport JSONRPC
· protocol https://app.clawspan.cloud/a2a/rest
· transport HTTP+JSON
· protocol Discover Capability Graph discover_capability_graph
Return the latest or pinned ShardLink capability graph with MCP and A2A protocol surfaces.
discoverycontractscapability-graphmcpa2aInspect Dual Plane Contract inspect_dual_plane_contract
Return the split-authority contract that defines ShardLink and SignalHub boundaries.
contractsdual-planegovernanceInspect Error Catalog inspect_error_catalog
Return deterministic error metadata, retryability, and idempotency semantics for machine callers.
contractserrorsretryidempotencyList Action Descriptors list_action_descriptors
Return the A2A action descriptor catalog derived from the canonical ShardLink capability graph.
discoveryactionsa2aexecutionInvoke Capability Action invoke_capability_action
Proxy a capability action to the canonical REST route with preserved auth, lease, and idempotency behavior.
executionrestidempotencyleasesRead Workspace Status read_workspace_status
Inspect workspace objective, task, directory, and bridge-read surfaces through A2A.
statusworkspacetasksbridgeExecute Provider Quote execute_provider_quote
Access provider quote and execution routes through A2A while preserving lease and funding policy.
providersbillingexecutionlease2026-09-19 from https://app.clawspan.cloud/.well-known/agent-card.json,
HTTP 200. The body was saved verbatim and is the sole source for
everything on this page — no field is inferred.
View the captured card.
Providers change what they serve; if this card has moved or changed shape,
the provider profile carries the
current state as of the last build.
Work with this as data
Every agent card here is available over the APIs.io API and to AI agents over MCP. A2A Agent Cards is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.