# crates.io Index API

**Canonical:** https://apis.io/apis/crates-io/crates-io-index-api/  
**Provider:** crates.io — https://apis.io/providers/crates-io/  
**Documentation:** https://doc.rust-lang.org/cargo/reference/registry-web-api.html

crates.io Index API is one of 5 APIs that [crates.io](https://apis.io/providers/crates-io/) publishes on the [APIs.io](https://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.

Per-crate index metadata files served over HTTP

## Machine-readable artifacts (13)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/openapi/crates-io-index-api-openapi.yml
- **Documentation** — https://doc.rust-lang.org/cargo/reference/registry-web-api.html
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/json-schema/crates-io-crate-schema.json
- **JSONStructure** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/json-structure/crates-io-crate-structure.json
- **JSONLD** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/json-ld/crates-io-context.jsonld
- **SpectralRules** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/rules/crates-io-rules.yml
- **Examples** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/examples/crates-io-search-example.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/examples/crates-io-get-crate-example.json
- **Documentation** — https://doc.rust-lang.org/cargo/reference/registry-index.html
- **Documentation** — https://blog.rust-lang.org/2023/03/09/Rust-1.68.0.html
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/json-schema/crates-io-index-entry-schema.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/examples/crates-io-config-example.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/crates-io/refs/heads/main/examples/crates-io-sparse-index-example.json

## Other crates.io APIs (4)

- [crates.io Config API](https://apis.io/apis/crates-io/crates-io-config-api/)
- [crates.io Crates API](https://apis.io/apis/crates-io/crates-io-crates-api/)
- [crates.io Owners API](https://apis.io/apis/crates-io/crates-io-owners-api/)
- [crates.io Versions API](https://apis.io/apis/crates-io/crates-io-versions-api/)

## Tags

Index

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/crates-io/crates-io-index-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/crates-io/.