2.0.0 (2026-07-24)

Breaking Changes

• FastAPI → JustAPIApp rename
• Server startup: app.run() replaces uvicorn
• Middleware response manipulation uses tuple-based headers

New Features

• Multi-database project scaffolder (justapi create)
• Multi-protocol support (REST, GraphQL, gRPC, JSON-RPC)
• Native MCP tool registration (@app.tool)
• Validated streaming output (@app.stream_json)
• Rust-backed agent session store
• OpenTelemetry Jaeger stack generator
• Multi-arch PyPI wheels (Linux, macOS, Windows, ARM64)
• Load-based auto-scaling (justapi serve --scale)
• Unix domain socket support

Performance

• 701,234 RPS hello-world (20x FastAPI)
• 724,038 RPS native fast path
• 456,168 RPS native DB query path
• Sub-0.2 ms p99 latency

Security

• OWASP Top 10 compliance (A01-A10 coverage)
• 7 cargo-fuzz targets in CI
• Rustls TLS (TLS 1.2/1.3 only)
• Secure-by-default CORS + security headers

1.0.0 (2026-07-15)

Initial release with core routing, middleware, database support, and FastAPI compatibility.

See Also

• ADR Index — Architecture Decision Records
• Changelog
• Roadmap