{
  "id": "hook-surface:gemini.tool-call-post",
  "_kind": "HookSurface",
  "_file": "channels-hooks/hook-surfaces/native/gemini-tool-call-hooks.yaml",
  "_cluster": "channels-hooks",
  "attributes": {
    "eventName": "tool_call_post (Gemini)",
    "displayName": "tool_call_post (Gemini)",
    "kind": "native",
    "originVendor": "Google",
    "direction": "post",
    "blocking": false,
    "family": "observer",
    "payloadSchema": {
      "type": "object",
      "required": [
        "tool_name",
        "tool_result"
      ],
      "properties": {
        "tool_name": {
          "type": "string"
        },
        "tool_result": {
          "type": "object"
        },
        "session_id": {
          "type": "string"
        },
        "error": {
          "type": "object",
          "description": "Set when the tool call failed; otherwise absent."
        }
      }
    },
    "description": "Gemini CLI's post-tool hook. Fired after each tool invocation\ncompletes (success or failure). Observer-only — cannot block.\nCanonicalizes to PostToolUse via hooks-mux mapping.\n"
  },
  "outgoingEdges": [
    {
      "from": "hook-surface:gemini.tool-call-post",
      "to": "hook-surface:post-tool-use",
      "kind": "canonicalized_to",
      "attributes": {}
    }
  ],
  "incomingEdges": [
    {
      "from": "agent-core-impl:gemini-cli.core@current",
      "to": "hook-surface:gemini.tool-call-post",
      "kind": "fires_hook",
      "attributes": {}
    },
    {
      "from": "agent-runtime-impl:gemini-cli.runtime@current",
      "to": "hook-surface:gemini.tool-call-post",
      "kind": "exposes",
      "attributes": {}
    },
    {
      "from": "hook-mapping:gemini-tool-call-post-native",
      "to": "hook-surface:gemini.tool-call-post",
      "kind": "maps_hook",
      "attributes": {}
    }
  ]
}