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instacart Replacements API

Endpoints for managing item replacements suggested by shoppers during order fulfillment.

instacart Replacements API is one of 12 APIs that Instacart publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include Replacements. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an AsyncAPI specification.

This API exposes 1 operation across 1 path, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 2.0.

Requests are made against a single base URL, https://connect.instacart.com.

1 operations 1 paths 3 schemas 1 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.0
Base URL
https://connect.instacart.com
Authentication
HTTP Bearer
Terms of Service
Resource Areas
1

Authentication & Security 1

instacart Replacements API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). By default, every request must be authenticated.

  • bearerAuth — OAuth 2.0 Bearer token obtained from the access token endpoint. A user access token is required for post-checkout operations.

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 PUT. Each is listed below with its method, path, parameters, and response codes.

Replacements 1

Endpoints for managing item replacements suggested by shoppers during order fulfillment.

PUT
/v2/post_checkout/orders/{order_id}/items/{order_item_id}/replacement
Approve or reject an item replacement
updateItemReplacement 2 params body → 200400401404

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are Error (2 properties), ReplacementResponse (2 properties), ReplacementDecisionRequest (1 property). Each schema is shown below with its type and property counts.

ReplacementDecisionRequest
object
1 property 1 required
ReplacementResponse
object
2 properties
Error
object
2 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

instacart-replacements-api-openapi.yml Raw ↑

Other APIs Instacart publishes across the network.

Instacart Shopping Widgets
instacart Authentication API
instacart Chat API
instacart Delivery API
instacart Items API
instacart Last Mile Delivery API
instacart Orders API
instacart Pickup API
instacart Products API
Instacart Developer Platform MCP Server
instacart Rest API
Where this information came from

This is an independent, third-party profile of instacart Replacements 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.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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