Spikard

Rust-centric polyglot HTTP framework with type-safe routing, OpenAPI/AsyncAPI/GraphQL/JSON-RPC codegen, tower-http middleware, and fixture-driven cross-language testing. Single Rust core compiled to 15 languages through alef-generated bindings.

Powered by Rust. Native performance for HTTP routing, validation, and middleware. Write once, bind everywhere.

• Type-safe across bindings - HTTP routing with path, query, body, and header validation. Errors convert losslessly between languages.
• Polyglot bindings - Python, TypeScript/Node, Ruby, PHP, Elixir, Go, Java, C#, Kotlin, Dart, Swift, Zig, WASM, Rust, and C FFI.
• Fixture-driven testing - shared JSON fixtures drive tests across language bindings for behavioral consistency.
• Schema codegen - parse OpenAPI 3.0, AsyncAPI 3.0, GraphQL SDL, and JSON-RPC 2.0 specs. Generate handlers and validators per binding.
• SQL to HTTP codegen - annotate SQL queries with @http GET /path, @http_auth bearer:jwt, and emit route metadata, OpenAPI 3.1 specs, and sidecars.
• Tower middleware - compression, rate limiting, timeouts, request IDs, authentication, and static file serving.
• Lifecycle hooks - onRequest, preValidation, preHandler, onResponse, and onError.
• WebSocket, SSE, background tasks - bidirectional and server-sent streams plus fire-and-forget background jobs.
• CLI and MCP server - initialize projects, generate code, validate schemas, and integrate with MCP-compatible tools.

Each binding ships through its native package manager. Use the package README for platform requirements and build details.

from spikard import Spikard
from spikard.config import ServerConfig
from msgspec import Struct

class User(Struct):
    id: int
    name: str

app = Spikard()

@app.get("/users/{id:int}")
async def get_user(id: int) -> User:
    return User(id=id, name="Alice")

if __name__ == "__main__":
    app.run(config=ServerConfig(port=8000))

import { Spikard, ServerConfig } from "@spikard/node";

const app = new Spikard();

app.get("/users/{id:int}", async (id: number) => {
  return { id, name: "Alice" };
});

const config = new ServerConfig({ port: 8000 });
app.run(config);

All bindings call a shared Rust core through thin language-native layers:

Language bindings (Python, Node, Ruby, Go, Java, C#...)
        |
        v
FFI / NAPI / PyO3 / Magnus / runtime bridge
        |
        v
crates/spikard-http      Router, middleware, auth
crates/spikard-core      HTTP types, validation, errors
crates/spikard-codegen   OpenAPI, GraphQL, AsyncAPI, JSON-RPC

Bindings are generated from the Rust API surface via alef. Binding code stays thin: type conversion, error conversion, and runtime integration.

task setup
task build
task test
task test:e2e
task lint
task format

Run task --list for the full task catalog.

• Rust core is stable.
• Binding packages follow the Rust crate version.
• E2E coverage is fixture-driven and shared across supported language targets.

See CONTRIBUTING.md. Generated binding and e2e files should be changed through Rust source, fixtures, templates, or alef.toml.

MIT License - see LICENSE for details.