Below is an example of a simple gRPC service that exposes a [PydanticAI](https://ai.pydantic.dev/) agent:
Most developer tooling work still happens through a UI a human drives. Pydantic Rpc MCP server moves it into the conversation instead. Below is an example of a simple gRPC service that exposes a PydanticAI agent:.
Configuration is passed through the environment: PYDANTIC_RPC_SKIP_GENERATION, PYDANTIC_RPC_PROTO_PATH, PYDANTIC_RPC_RESERVED_FIELDS, PYDANTIC_RPC_SERIALIZER_STRATEGY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
The server ships on PyPI as pydantic-rpc, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. It is maintained by i2y; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
{
"mcpServers": {
"pydantic-rpc": {
"command": "uvx",
"args": ["pydantic-rpc"],
"env": {
"PYDANTIC_RPC_SKIP_GENERATION": "your-value",
"PYDANTIC_RPC_PROTO_PATH": "your-value",
"PYDANTIC_RPC_RESERVED_FIELDS": "your-value",
"PYDANTIC_RPC_SERIALIZER_STRATEGY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| PYDANTIC_RPC_SKIP_GENERATION | Configuration value read at startup. | Optional |
| PYDANTIC_RPC_PROTO_PATH | Filesystem location the server is allowed to use. | Optional |
| PYDANTIC_RPC_RESERVED_FIELDS | Configuration value read at startup. | Optional |
| PYDANTIC_RPC_SERIALIZER_STRATEGY | Configuration value read at startup. | Optional |
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