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Every API here is available over the APIs.io API and to AI agents over MCP.
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This API
curl "https://apis.io/api/v1/apis/scope3-signup-api"
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OpenAPI Specification
openapi: 3.2.0
info:
title: Scope3 Buyer Signup 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: Signup
description: Request reviewed access to Interchange
paths:
/auth/buyer-signup-intake:
servers:
- url: https://api.interchange.io
description: Production signup service
post:
operationId: submitBuyerSignupIntake
summary: Request buyer access
description: Submit buyer qualification for human review. This public form does not create an account, grant access, or establish organization or email ownership.
tags:
- Signup
security: []
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
email:
type: string
maxLength: 254
format: email
pattern: ^(?!\.)(?!.*\.\.)([A-Za-z0-9_'+\-\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\-]*\.)+[A-Za-z]{2,}$
first_name:
type: string
minLength: 1
maxLength: 80
last_name:
type: string
minLength: 1
maxLength: 80
company:
type: string
minLength: 1
maxLength: 200
role:
type:
- string
- 'null'
enum:
- brand
- agency
intent:
type:
- string
- 'null'
enum:
- self_service
- assisted_pilot
- evaluate
- integration_partnership
- campaign_management
- agent_connection
agent_name:
type:
- string
- 'null'
minLength: 1
maxLength: 200
source:
default: agentic-signup
type: string
enum:
- agentic-signup
- agentic-login
- marketing-site
use_case:
type:
- string
- 'null'
maxLength: 1000
intended_markets:
default: []
maxItems: 249
type: array
items:
type: string
minLength: 2
maxLength: 32
intended_channels:
default: []
maxItems: 22
type: array
items:
type: string
enum:
- display
- olv
- social
- search
- ctv
- linear_tv
- radio
- streaming_audio
- podcast
- dooh
- ooh
- print
- cinema
- email
- gaming
- retail_media
- influencer
- affiliate
- product_placement
- sponsored_intelligence
- audio
- other
pilot_budget:
type:
- string
- 'null'
minLength: 1
maxLength: 100
pilot_timing:
type:
- string
- 'null'
enum:
- ready_now
- one_to_three_months
- later
self_service_experience:
type:
- boolean
- 'null'
prelaunch_slack_consent:
type:
- boolean
- 'null'
website:
type: string
maxLength: 500
required:
- email
- first_name
- last_name
- company
responses:
'201':
description: Request buyer access
content:
application/json:
schema:
type: object
properties:
success:
type: boolean
enum:
- true
data:
type: object
properties:
ok:
type: boolean
enum:
- true
org_ref:
type:
- string
- 'null'
qualification_route:
type: string
enum:
- solutions_review
- market_nurture
- manual_review
required:
- ok
- org_ref
- qualification_route
additionalProperties: false
required:
- success
- data
additionalProperties: false
'400':
description: Bad request
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
'500':
description: Internal server error
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
components:
schemas:
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
ErrorResponse:
description: Standard error response
type: object
properties:
data:
type:
- string
- 'null'
enum:
- null
error:
$ref: '#/components/schemas/ApiError'
required:
- data
- error
additionalProperties: false
securitySchemes:
bearerAuth:
type: http
scheme: bearer
description: API key or access token