Slack Web API — Chat

naftiko: 1.0.0-alpha2
info:
  label: Slack Web API — Chat
  description: 'Slack Web API — Chat. 7 operations. Lead operation: Slack Delete a Message. Self-contained Naftiko capability
    covering one Slack business surface.'
  tags:
  - Slack
  - Chat
  created: '2026-05-19'
  modified: '2026-05-19'
binds:
- namespace: env
  keys:
    SLACK_API_KEY: SLACK_API_KEY
capability:
  consumes:
  - type: http
    namespace: web-chat
    baseUri: https://slack.com/api
    description: Slack Web API — Chat business capability. Self-contained, no shared references.
    resources:
    - name: chat.delete
      path: /chat.delete
      operations:
      - name: chatdelete
        method: POST
        description: Slack Delete a Message
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: token
          in: header
          type: string
          description: 'Authentication token. Requires scope: chat:write'
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    - name: chat.getPermalink
      path: /chat.getPermalink
      operations:
      - name: chatgetpermalink
        method: GET
        description: Slack Get a Permalink for a Message
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: channel
          in: query
          type: string
          description: The ID of the conversation or channel containing the message.
          required: true
        - name: message_ts
          in: query
          type: string
          description: A message's ts value.
          required: true
    - name: chat.postEphemeral
      path: /chat.postEphemeral
      operations:
      - name: chatpostephemeral
        method: POST
        description: Slack Send an Ephemeral Message
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: token
          in: header
          type: string
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    - name: chat.postMessage
      path: /chat.postMessage
      operations:
      - name: chatpostmessage
        method: POST
        description: Slack Send a Message to a Channel
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: token
          in: header
          type: string
          description: 'Authentication token. Requires scope: chat:write'
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    - name: chat.scheduleMessage
      path: /chat.scheduleMessage
      operations:
      - name: chatschedulemessage
        method: POST
        description: Slack Schedule a Message for Later
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    - name: chat.unfurl
      path: /chat.unfurl
      operations:
      - name: chatunfurl
        method: POST
        description: Slack Provide Custom Unfurl Behavior
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    - name: chat.update
      path: /chat.update
      operations:
      - name: chatupdate
        method: POST
        description: Slack Update an Existing Message
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: token
          in: header
          type: string
          description: 'Authentication token. Requires scope: chat:write'
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    authentication:
      type: bearer
      token: '{{env.SLACK_API_KEY}}'
  exposes:
  - type: rest
    namespace: web-chat-rest
    port: 8080
    description: REST adapter for Slack Web API — Chat. One Spectral-compliant resource per consumed operation, prefixed with
      /v1.
    resources:
    - path: /v1/chat-delete
      name: chat-delete
      description: REST surface for chat.delete.
      operations:
      - method: POST
        name: chatdelete
        description: Slack Delete a Message
        call: web-chat.chatdelete
        with:
          token: rest.token
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/chat-getpermalink
      name: chat-getpermalink
      description: REST surface for chat.getPermalink.
      operations:
      - method: GET
        name: chatgetpermalink
        description: Slack Get a Permalink for a Message
        call: web-chat.chatgetpermalink
        with:
          channel: rest.channel
          message_ts: rest.message_ts
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/chat-postephemeral
      name: chat-postephemeral
      description: REST surface for chat.postEphemeral.
      operations:
      - method: POST
        name: chatpostephemeral
        description: Slack Send an Ephemeral Message
        call: web-chat.chatpostephemeral
        with:
          token: rest.token
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/chat-postmessage
      name: chat-postmessage
      description: REST surface for chat.postMessage.
      operations:
      - method: POST
        name: chatpostmessage
        description: Slack Send a Message to a Channel
        call: web-chat.chatpostmessage
        with:
          token: rest.token
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/chat-schedulemessage
      name: chat-schedulemessage
      description: REST surface for chat.scheduleMessage.
      operations:
      - method: POST
        name: chatschedulemessage
        description: Slack Schedule a Message for Later
        call: web-chat.chatschedulemessage
        with:
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/chat-unfurl
      name: chat-unfurl
      description: REST surface for chat.unfurl.
      operations:
      - method: POST
        name: chatunfurl
        description: Slack Provide Custom Unfurl Behavior
        call: web-chat.chatunfurl
        with:
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/chat-update
      name: chat-update
      description: REST surface for chat.update.
      operations:
      - method: POST
        name: chatupdate
        description: Slack Update an Existing Message
        call: web-chat.chatupdate
        with:
          token: rest.token
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: web-chat-mcp
    port: 9090
    transport: http
    description: MCP adapter for Slack Web API — Chat. One tool per consumed operation, routed inline through this capability's
      consumes block.
    tools:
    - name: slack-delete-message
      description: Slack Delete a Message
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: web-chat.chatdelete
      with:
        token: tools.token
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: slack-get-permalink-message
      description: Slack Get a Permalink for a Message
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: web-chat.chatgetpermalink
      with:
        channel: tools.channel
        message_ts: tools.message_ts
      outputParameters:
      - type: object
        mapping: $.
    - name: slack-send-ephemeral-message
      description: Slack Send an Ephemeral Message
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: web-chat.chatpostephemeral
      with:
        token: tools.token
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: slack-send-message-channel
      description: Slack Send a Message to a Channel
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: web-chat.chatpostmessage
      with:
        token: tools.token
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: slack-schedule-message-later
      description: Slack Schedule a Message for Later
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: web-chat.chatschedulemessage
      with:
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: slack-provide-custom-unfurl-behavior
      description: Slack Provide Custom Unfurl Behavior
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: web-chat.chatunfurl
      with:
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: slack-update-existing-message
      description: Slack Update an Existing Message
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: web-chat.chatupdate
      with:
        token: tools.token
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.