prompt

API Contract Versioning

Design API versioning and backward compatibility strategy to support multiple client generations simultaneously.

Updated June 2026

The prompt

Our API serves {{client_count}} clients across {{version_range}} (oldest to newest). We need to deprecate {{old_version}} while supporting {{concurrent_versions}} versions.

Current API style: {{api_style}}
Breaking changes planned: {{planned_changes}}

Design:
1. Versioning scheme (URL/header/content-type)
2. Deprecation timeline
3. Migration path for clients
4. Testing strategy across versions

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Variables

Number of Clients

Version Range (e.g., v1-v5)

Version to Deprecate

Versions to Support Concurrently

API Style (REST/GraphQL/gRPC)

Planned Breaking Changes

Details

Author

AI Khazna

License

—

Security

—

Type

prompt

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