Extend

Extend API

Extend's REST API for product and shipping protection: manage offers, contracts, orders and line items, refunds, claims, service orders, and leads. Header-based date versioning; OAuth2 client-credentials auth via the X-Extend-Access-Token header; idempotent writes via X-Idempotency-Key.

GitHub

Documentation

📖
APIReference
https://docs.extend.com/reference

Other Resources

🔗
Sandbox
https://api-demo.helloextend.com
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/extend/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/extend-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
name: Extend API
description: 'Extend''s REST API for product and shipping protection: manage offers, contracts, orders
  and line items, refunds, claims, service orders, and leads. Header-based date versioning; OAuth2 client-credentials
  auth via the X-Extend-Access-Token header; idempotent writes via X-Idempotency-Key.'
humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
baseURL: https://api.helloextend.com
tags:
- Product Protection
- Shipping Protection
- Warranty
- E-Commerce
tags_raw:
- Product Protection
- Shipping Protection
- Warranty
- Ecommerce
properties:
- type: APIReference
  url: https://docs.extend.com/reference
- type: Sandbox
  url: https://api-demo.helloextend.com