{
  "name": "slack-post-message",
  "version": "0.1.1",
  "description": "Post or update Slack messages using a compact action surface for agent notifications.",
  "files": [
    "dist/"
  ],
  "entrypoint": {
    "args": [
      "dist/index.js"
    ],
    "command": "node",
    "timeout_ms": 30000
  },
  "environment": {
    "vars": {
      "SLACK_BOT_TOKEN": {
        "required": true,
        "description": "Slack bot token used for message API requests."
      },
      "SLACK_API_BASE_URL": {
        "default": "https://slack.com/api",
        "required": false,
        "description": "Optional Slack API base URL. Defaults to https://slack.com/api."
      }
    }
  },
  "inputs": {
    "type": "object",
    "required": [
      "action",
      "channel",
      "text"
    ],
    "properties": {
      "ts": {
        "type": "string",
        "description": "Slack timestamp of the message to update."
      },
      "text": {
        "type": "string",
        "description": "Primary message text."
      },
      "action": {
        "enum": [
          "post_message",
          "update_message"
        ],
        "type": "string",
        "description": "Slack message action to perform."
      },
      "blocks": {
        "type": "array",
        "items": {
          "type": "object",
          "description": "One Slack block object.",
          "additionalProperties": true
        },
        "description": "Optional Slack block kit payload."
      },
      "channel": {
        "type": "string",
        "description": "Slack channel ID where the message will be posted or updated."
      },
      "thread_ts": {
        "type": "string",
        "description": "Optional Slack thread timestamp for posting a threaded reply."
      }
    },
    "additionalProperties": false
  },
  "outputs": {
    "oneOf": [
      {
        "type": "object",
        "required": [
          "ok",
          "action",
          "channel",
          "ts",
          "message",
          "metadata"
        ],
        "properties": {
          "ok": {
            "const": true,
            "description": "True when the Slack API call succeeded."
          },
          "ts": {
            "type": "string",
            "description": "Slack timestamp of the created or updated message."
          },
          "action": {
            "type": "string",
            "description": "Action that was executed."
          },
          "channel": {
            "type": "string",
            "description": "Slack channel ID returned by Slack."
          },
          "message": {
            "type": "object",
            "description": "Normalized Slack message payload.",
            "additionalProperties": true
          },
          "metadata": {
            "type": "object",
            "description": "Additional request metadata such as whether a thread was targeted.",
            "additionalProperties": true
          }
        },
        "additionalProperties": false
      },
      {
        "type": "object",
        "required": [
          "ok",
          "error"
        ],
        "properties": {
          "ok": {
            "const": false,
            "description": "False when validation or the Slack API call failed."
          },
          "error": {
            "type": "object",
            "required": [
              "code",
              "message"
            ],
            "properties": {
              "code": {
                "type": "string",
                "description": "Stable machine-readable error code."
              },
              "details": {
                "type": "object",
                "description": "Optional structured context about the failure.",
                "additionalProperties": true
              },
              "message": {
                "type": "string",
                "description": "Human-readable explanation of the failure."
              }
            },
            "description": "Structured error returned by the tool.",
            "additionalProperties": true
          }
        },
        "additionalProperties": false
      }
    ]
  },
  "readme": "README.md",
  "license": {
    "spdx": "MIT"
  },
  "runtime": {
    "type": "node",
    "version": "20"
  }
}