JsonRpc Server Bundle

Modern JSON-RPC 2.0 server for Symfony — built around attributes, DTOs, and the rest of the framework you already use. Speaks JSON-RPC for your own clients, MCP for AI agents, and NDJSON / SSE when you need to stream.

composer require knetesin/json-rpc-server

use Knetesin\JsonRpcServerBundle\Attribute as Rpc;

#[Rpc\Method('user.update', roles: ['ROLE_USER'])]
final class UpdateUser
{
    public function __invoke(UpdateUserRequest $req, Context $ctx): UserResponse { /* … */ }
}

That’s a full handler — no routing, no controllers, no manual validation.

Read the docs

• English → docs/en/
• Русский → docs/ru/

Highlights

• Attribute-driven (#[Rpc\Method], #[Rpc\Cache], #[Rpc\RateLimit], #[Rpc\Stream], #[Rpc\Mcp])
• DTOs through Symfony Serializer + Validator
• Streaming endpoint with NDJSON / SSE / JSON-array formats
• First-class MCP for LLM agents, five rendering formats incl. TOON
• Built-in PSR-3 logging, Symfony Web Profiler, Sentry bridge, OpenTelemetry bridge — all opt-in
• Compile-time method discovery — zero reflection in the hot path
• Safe defaults for long-running runtimes (RoadRunner, FrankenPHP, Swoole)

Repository

github.com/knetesin/json-rpc-server · Packagist · Issues · Discussions

License

MIT.