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OpenAPI Specification
openapi: 3.2.0
info:
title: Scope3 Buyer Tasks API
version: 2.0.0
description: 'REST API for advertisers to manage advertisers, campaigns, and reporting.
## Authentication
All endpoints require a Bearer token in the Authorization header:
```
Authorization: Bearer your-api-key
```
## Base URL
`https://api.interchange.io/api/v2/buyer`
## For AI Agents
AI agents can use the MCP endpoint at `/mcp/v2/buyer` with three tools:
- `initialize`: Start an MCP session
- `api_call`: Make REST API calls
- `ask_about_capability`: Learn about API features'
servers:
- url: https://api.interchange.io/api/v2/buyer
description: Production server
tags:
- name: Tasks
description: Track async operation status
paths:
/tasks/{taskId}:
get:
operationId: getTask
summary: Get task status
description: Get the current status of an async task. AdCP polling fallback for when webhooks are unavailable.
tags:
- Tasks
security:
- bearerAuth: []
parameters:
- in: path
name: taskId
schema:
type: string
format: uuid
pattern: ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
required: true
responses:
'200':
description: Get task status
content:
application/json:
schema:
$ref: '#/components/schemas/TaskResponse'
'400':
description: Bad request
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
'500':
description: Internal server error
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
components:
schemas:
TaskOutput:
description: Async task resource representation
type: object
properties:
taskId:
description: Unique task identifier
example: 550e8400-e29b-41d4-a716-446655440000
type: string
format: uuid
pattern: ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
taskType:
description: Type of async operation
example: audience_sync
type: string
enum:
- audience_sync
- media_buy_create
- creative_sync
status:
description: Current task status (AdCP states)
example: submitted
type: string
enum:
- submitted
- working
- completed
- failed
- input-required
resourceType:
description: Type of resource this task operates on
example: audience
type:
- string
- 'null'
resourceId:
description: Identifier of the resulting resource (set on completion)
example: aud_12345
type:
- string
- 'null'
error:
description: AdCP-compatible error object when status is "failed"
allOf:
- $ref: '#/components/schemas/TaskError'
response:
description: Original response payload from the downstream system
type:
- object
- 'null'
additionalProperties: {}
metadata:
description: Operation-specific context
type:
- object
- 'null'
additionalProperties: {}
retryAfterSeconds:
description: Suggested polling interval in seconds. Set based on task type to guide how frequently callers should poll.
example: 30
type:
- number
- 'null'
createdAt:
description: When the task was created (ISO 8601)
example: '2026-01-15T10:30:00.000Z'
type: string
format: date-time
pattern: ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
updatedAt:
description: When the task was last updated (ISO 8601)
example: '2026-01-20T14:45:00.000Z'
type: string
format: date-time
pattern: ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
required:
- taskId
- taskType
- status
- resourceType
- resourceId
- error
- response
- metadata
- retryAfterSeconds
- createdAt
- updatedAt
additionalProperties: false
ErrorResponse:
description: Standard error response
type: object
properties:
data:
type:
- string
- 'null'
enum:
- null
error:
$ref: '#/components/schemas/ApiError'
required:
- data
- error
additionalProperties: false
TaskResponse:
description: Response containing a single task
type: object
properties:
task:
$ref: '#/components/schemas/TaskOutput'
required:
- task
additionalProperties: false
TaskError:
description: AdCP-compatible error object
type: object
properties:
code:
description: Error code for programmatic handling
example: VALIDATION_ERROR
type: string
message:
description: Human-readable error message
example: Invalid budget value
type: string
field:
description: Field path associated with the error
example: packages[0].targeting
type: string
suggestion:
description: Suggested fix for the error
type: string
retryAfter:
description: Seconds to wait before retrying the operation
type: number
details:
description: Additional task-specific error details
type: object
additionalProperties: {}
recovery:
description: 'Agent recovery classification: transient (retry), correctable (fix and resend), terminal (requires human action)'
type: string
enum:
- transient
- correctable
- terminal
required:
- code
- message
additionalProperties: false
ApiError:
description: Structured error object
type: object
properties:
code:
description: Machine-readable error code
type: string
message:
description: Human-readable error message
type: string
field:
description: Field path associated with the error
type: string
details:
description: Additional error context
type: object
additionalProperties: {}
required:
- code
- message
additionalProperties: false
securitySchemes:
bearerAuth:
type: http
scheme: bearer
description: API key or access token