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crates.io Index API

Per-crate index metadata files served over HTTP

crates.io Index API is one of 5 APIs that crates.io publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 3 JSON Schema definitions.

Tagged areas include Index. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a JSON-LD context, and 3 JSON Schemas.

This API exposes 4 operations across 4 paths. It is described by OpenAPI 3.2.0, at version v1.

Requests are made against a single base URL, https://index.crates.io.

4 operations 4 paths 0 schemas 4 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
v1
Server
https://index.crates.io
Resource Areas
1

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 GET. Each is listed below with its method, path, parameters, and response codes.

Index 4

Per-crate index metadata files served over HTTP

GET
/1/{crate}
Get Index For One-Character Crate
getIndexOneChar 1 param → 200304404
GET
/2/{crate}
Get Index For Two-Character Crate
getIndexTwoChar 1 param → 200304404
GET
/3/{first}/{crate}
Get Index For Three-Character Crate
getIndexThreeChar 2 params → 200304404
GET
/{first_two}/{second_two}/{crate}
Get Index For Four-Plus-Character Crate
getIndexLong 3 params → 200304404

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

crates-io-index-api-openapi.yml Raw ↑

Other APIs crates.io publishes across the network.

crates.io Config API
crates.io Crates API
crates.io Owners API
crates.io Versions API
Where this information came from

This is an independent, third-party profile of crates.io Index 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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