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IAB Tech Lab Negotiation API

Multi-round price negotiation

IAB Tech Lab Negotiation API is one of 43 APIs that IAB Tech Lab publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 16 JSON Schema definitions.

Tagged areas include Negotiation. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a changelog, and 16 JSON Schemas.

This API exposes 3 operations across 3 paths, and defines 10 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against the base URL https://api.iabtechlab.com.

3 operations 3 paths 10 schemas 1 GET2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.iabtechlab.com
License
Resource Areas
1

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 1 GET, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Negotiation 3

Multi-round price negotiation

POST
/proposals/{proposal_id}/counter
Counter Proposal
counter_proposal_proposals__proposal_id__counter_post 3 params body → 200422
GET
/proposals/{proposal_id}/negotiation
Get Negotiation Status
get_negotiation_status_proposals__proposal_id__negotiation_get 1 param → 200422
POST
/api/v1/negotiations/messages
Post Negotiation Message
post_negotiation_message_api_v1_negotiations_messages_post 2 params body → 200422

Schemas 10

The contract defines 10 schemas that model the data the API accepts and returns. The most detailed are BuyerIdentity (11 properties), NegotiationMessage (9 properties), NegotiationRound (8 properties), CounterOfferRequest (5 properties). Each schema is shown below with its type and property counts.

NegotiationMessage
object
A buyer negotiation move (money-mutating: FD-12). Exactly one negotiation context is required: negotiationid to continue, or proposalid/quoteid to open (the se…
9 properties 2 required
NegotiationStatus
string
Status of a negotiation (typed; was a raw string in the seller repo).
CounterOfferRequest
object
Request to submit a counter-offer in a negotiation.
5 properties 1 required
ValidationError
object
5 properties 3 required
NegotiationAction
string
Action taken in a negotiation round.
Money
object
Exact money amount in integer micros (flagged decision FD-11). 1000000 micros = 1 currency unit — the ad-industry convention (Google Ad Manager, among others,…
2 properties 1 required
NegotiationRound
object
A single offer/counter round in a negotiation.
8 properties 4 required
NegotiationRoundResponse
object
The seller's answer to a :class:NegotiationMessage. Embeds the shared :class:~iabagenticprimitives.primitives.NegotiationRound primitive — the same record appe…
4 properties 3 required
HTTPValidationError
object
1 property
BuyerIdentity
object
Buyer identity revealed progressively to unlock better pricing. Superset of the buyer repo's BuyerIdentity and the seller repo's BuyerIdentity/QuoteBuyerIdenti…
11 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

iab-tech-lab-negotiation-api-openapi.yml Raw ↑

Other APIs IAB Tech Lab publishes across the network.

OpenRTB 2.x Protocol
AdCOM Protobuf
Agentic RTB Framework gRPC
VAST and VMAP Schemas
Supply Chain API
IAB Tech Lab A2a API
IAB Tech Lab Accounts API
IAB Tech Lab Agent Registry API
IAB Tech Lab Approvals API
IAB Tech Lab Assignments API
IAB Tech Lab Audience API
IAB Tech Lab Audit API
Where this information came from

This is an independent, third-party profile of IAB Tech Lab Negotiation API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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