{
  "id": "capability:mcp-structured-tool-output",
  "_kind": "Capability",
  "_file": "capabilities/capabilities/mcp-structured-tool-output.yaml",
  "_cluster": "capabilities",
  "attributes": {
    "displayName": "MCP structured tool output",
    "description": "The entity supports structured (typed / JSON-schema-shaped) tool\noutput, as introduced in MCP spec revision 2025-06-18. Tools may\nreturn a `structuredContent` payload alongside (or instead of) free\ntext. See https://modelcontextprotocol.io/specification/2025-06-18/server/tools\n",
    "appliesToNodeKinds": [
      "AgentRuntimeImpl",
      "ToolServer"
    ],
    "category": "agent"
  },
  "outgoingEdges": [],
  "incomingEdges": [
    {
      "from": "agent-runtime-impl:claude-code.runtime@1.x",
      "to": "capability:mcp-structured-tool-output",
      "kind": "supports",
      "attributes": {
        "versionRange": ">=1.0.0 <2.0.0",
        "level": "full",
        "notes": "Claude Code's MCP client consumes `structuredContent` typed tool output (MCP spec 2025-06-18+), passing schemas through to the model where helpful. ",
        "evidenceSourceIds": [
          "evidence:claude-code-docs-mcp-2026"
        ]
      }
    },
    {
      "from": "agent-runtime-impl:cursor.runtime@current",
      "to": "capability:mcp-structured-tool-output",
      "kind": "supports",
      "attributes": {
        "versionRange": ">=0.40.0",
        "level": "partial",
        "notes": "TODO: confirm whether Cursor's MCP client consumes `structuredContent` payloads or only flattens them to text. "
      }
    },
    {
      "from": "agent-runtime-impl:opencode.runtime@1.x",
      "to": "capability:mcp-structured-tool-output",
      "kind": "supports",
      "attributes": {
        "versionRange": ">=1.0.0 <2.0.0",
        "level": "none",
        "notes": "TODO: verify OpenCode handling of MCP `structuredContent` payloads\n(MCP 2025-06-18). As of cataloguing OpenCode flattens tool output\nto text. Marked `none` pending review of\nhttps://github.com/sst/opencode\n"
      }
    }
  ]
}