Cosmos DB Provider
SkillCloud & infraYour AI gains working knowledge of how the EF Core Azure Cosmos DB provider is implemented, so changes it makes to Cosmos-specific code fit the way the provider actually works. The skill supplies those implementation details whenever your AI edits Cosmos-specific code. It is drawn from the dotnet/efcore repository.
Available today. Use it from your connected AI after setup.
No other account needed.
After adding the skill, point your AI at the Cosmos-specific code you want to change. It will use the provider's implementation details as it works.
Then ask your AI: use the Cosmos DB Provider skill
What your AI can do with it
- Edit Cosmos-specific code with guidance on how the provider works
- Explain the implementation details of the EF Core Azure Cosmos DB provider
- Update Cosmos provider code in the dotnet/efcore repository
- Answer questions about how the provider is implemented
- Keep changes to Cosmos-specific code consistent with how the provider is built
What this skill tells your AI
The instructions your AI receives, as published by dotnet/efcore in .agents/skills/cosmos-provider/SKILL.md and read by ahel’s review.
Non-relational provider with its own parallel query pipeline. Uses JSON for document materialization.
Key Differences from Relational
- No migrations — use
EnsureCreated() - Documents as JSON — owned and complex types become embedded objects
- Partition key configuration required for performance
ETagfor optimistic concurrency- No cross-container joins
Azure Cosmos DB Emulator for Tests
TestEnvironment.InitializeAsync()auto-starts aTestcontainers.CosmosDbcontainer whenTest__Cosmos__DefaultConnectionis not set. Set the env var to use an existing emulator instead.- Skip tests requiring unsupported features on the Linux emulator with
[ConditionalFact(typeof(CosmosTestEnvironment), nameof(CosmosTestEnvironment.IsNotLinuxEmulator))].
Signals
- GitHub stars
- 15k
- Forks
- 3k
- Last commit
- Sep 2026
Advanced
- Catalog kind
- skill
- Gateway key
cosmos-provider- Source
- github.com/dotnet/efcore