# Instamart API documentation

Last updated 5 Nov 2026.

Reference for the Instamart data on the Rewalto API, read from API contract 0.157.0. Requests go to https://api.rewalto.com with an API key sent as Authorization: Bearer. Each endpoint below lists its parameters, record fields, errors and credit cost.

## Key facts

| | |
| --- | --- |
| Base address | https://api.rewalto.com |
| Authentication | API key, as Authorization: Bearer |
| API contract | Version 0.157.0 |
| Instamart price readings | 154 pins held · 10,103 readings on 4 Nov 2026 (Measured 4 Nov 2026) |
| Refresh | Daily (Last update 5 Nov 2026) |
| Dark stores counted | 1,360 open stores in 168 cities (Counted 5 Nov 2026) |

## Endpoints

| Endpoint | Returns | Cost |
| --- | --- | --- |
| `GET /v1/data/observations?retailer=instamart` | each Swiggy Instamart product Rewalto has read: title, brand, pack size, price, MRP and stock at a pin code, with the time of the reading | 1 credit per 10 readings |
| `GET /v1/data/observations?retailer=instamart` | every reading of a Swiggy Instamart product's price, MRP and stock at a pin code, newest first, between two dates | 1 credit per 10 readings |
| `GET /v1/data/dark-stores?platform=instamart` | each Swiggy Instamart dark store Rewalto holds, with its store id, name, city, pin code, map point and the pin codes it serves | 5 credits per dark store |

- [Instamart product data API reference](https://rewalto.com/developers/docs/api/instamart/products)
- [Instamart price history API reference](https://rewalto.com/developers/docs/api/instamart/price-history)
- [Instamart serviceability API reference](https://rewalto.com/developers/docs/api/instamart/serviceability)

## Instamart search rank and sponsored ads data

Rewalto records where each Swiggy Instamart product ranks in the app's search, by search term, pin code and day, with sponsored slots kept apart from organic ones. Read it with the search rank endpoint and the sponsored share endpoint and retailer=instamart; the terms, pin codes and dates covered are on the search rank data page.

- [Search rank and sponsored slots data](https://rewalto.com/data/commerce/quick-commerce-search-rank)

## Instamart delivery time by pin code

Rewalto holds the delivery minutes Swiggy Instamart promised shoppers at pin codes as history, not a daily feed. Read it with the delivery time endpoint and retailer=instamart; the delivery time page says which days and pin codes are covered.

- [Delivery time by pin code data](https://rewalto.com/data/commerce/delivery-time-by-pin)

## Keys, errors and credits

Every endpoint shares the same key, error shape and credit rules.

- [Authentication](https://rewalto.com/developers/docs/authentication)
- [Errors](https://rewalto.com/developers/docs/errors)
- [Credits and receipts](https://rewalto.com/developers/docs/credits)

## Related

- [Instamart API overview](https://rewalto.com/developers/api/instamart)
- [Instamart price and dataset page](https://rewalto.com/data/commerce/instamart)
- [Instamart dark store map](https://rewalto.com/data/dark-stores/app/instamart)
- [Instamart scraper alternative](https://rewalto.com/guides/instamart-scraper-alternative)
- [Instamart API contract for agents (OpenAPI)](https://rewalto.comhttps://api.rewalto.com/openapi/instamart.json)
- [All documentation](https://rewalto.com/developers/docs)
- [Full API contract (OpenAPI)](https://rewalto.com/developers/openapi.json)
- [Data catalogue for agents](https://rewalto.com/developers/catalog.json)
- [MCP server tools (preview)](https://rewalto.com/developers/mcp)
- [Quickstart: your first request](https://rewalto.com/developers/docs/quickstart)
- [Pricing and free credits](https://rewalto.com/pricing)

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Canonical page: https://rewalto.com/developers/docs/api/instamart
Last content change: 2026-11-05