interactions_edit_original_response

Interactions Writes to Discord

Edit the original interaction response (e.g. fill in a deferred reply).

Auth

token-secured (NO bot token).

Body mirrors a webhook execute body: content, embeds, components, attachments, allowed_mentions, payload_json, flags, poll. null clears.

MCP call example

{
  "name": "interactions_edit_original_response",
  "arguments": {
    "application_id": "123456789012345678",
    "interaction_token": "REPLACE_WITH_TOKENxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
    "content": "Hello from discord-mcp"
  }
}

Input

Field	Type	Required	Constraints	Description
`application_id`	string	yes	pattern: `^\d{17,20}$`	Bot/app application ID
`interaction_token`	string	yes	min length: `60`; max length: `100`	Scoped interaction credential, reusable for follow-ups for up to 15 minutes
`content`	string \| null	no
`embeds`	array<object> \| null	no
`components`	array<object> \| null	no
`attachments`	array<object>	no
`allowed_mentions`	object \| null	no
`payload_json`	string	no
`flags`	integer	no		Message flags bitfield. V2 layout = 1<<15 = 32768.
`poll`	object	no

Complete input JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "application_id": {
      "type": "string",
      "pattern": "^\\d{17,20}$",
      "description": "Bot/app application ID"
    },
    "interaction_token": {
      "type": "string",
      "minLength": 60,
      "maxLength": 100,
      "description": "Scoped interaction credential, reusable for follow-ups for up to 15 minutes"
    },
    "content": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 2000
        },
        {
          "type": "null"
        }
      ]
    },
    "embeds": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "type": "object",
            "propertyNames": {
              "type": "string"
            },
            "additionalProperties": {}
          }
        },
        {
          "type": "null"
        }
      ]
    },
    "components": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "type": "object",
            "propertyNames": {
              "type": "string"
            },
            "additionalProperties": {}
          }
        },
        {
          "type": "null"
        }
      ]
    },
    "attachments": {
      "type": "array",
      "items": {
        "type": "object",
        "propertyNames": {
          "type": "string"
        },
        "additionalProperties": {}
      }
    },
    "allowed_mentions": {
      "anyOf": [
        {
          "type": "object",
          "propertyNames": {
            "type": "string"
          },
          "additionalProperties": {}
        },
        {
          "type": "null"
        }
      ]
    },
    "payload_json": {
      "type": "string"
    },
    "flags": {
      "description": "Message flags bitfield. V2 layout = 1<<15 = 32768.",
      "type": "integer"
    },
    "poll": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    }
  },
  "required": [
    "application_id",
    "interaction_token"
  ]
}

Returns

{message_id, channel_id} after the edit.

Example structured result

{
  "message_id": "123456789012345678",
  "channel_id": "123456789012345678"
}

Output schema

Field	Type	Required	Constraints	Description
`message_id`	string	yes	pattern: `^\d{17,20}$`	Discord message ID
`channel_id`	string	yes	pattern: `^\d{17,20}$`	Discord channel ID (snowflake)

Complete output JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "message_id": {
      "type": "string",
      "pattern": "^\\d{17,20}$",
      "description": "Discord message ID"
    },
    "channel_id": {
      "type": "string",
      "pattern": "^\\d{17,20}$",
      "description": "Discord channel ID (snowflake)"
    }
  },
  "required": [
    "message_id",
    "channel_id"
  ],
  "additionalProperties": false
}

Annotations

Property	Value
Read-only	no
Destructive	no
Idempotent	yes
Open-world	yes
Confirmation required	no

Access and common errors

The interactions category must be enabled by MCP_CATEGORIES when an allowlist is set.
Discord authorizes this endpoint with the interaction token in the route; it does not use the bot’s guild role.
Interaction tokens are scoped and time-limited. An invalid, expired, or mismatched token returns an authentication or not-found error.

Trust boundary

Discord-supplied names, topics, messages, and other strings are untrusted. Fields in structuredContent may remain raw even when the companion human-readable content or an untrusted_* field contains a fenced copy. Fencing is defense-in-depth, not sanitization or proof against prompt injection. Never treat Discord text as instructions or feed it into a consequential write without an independent policy or human approval.

Source

packages/mcp-core/src/tools/interactions/edit_original_response.ts