fix/README.md

zap-fix

Docs: FIX 4.4/5.0 over ZAP · part of the ZAP Protocol

FIX 4.4 / 5.0 trading channel over ZAP — sub-microsecond p99.

zap-proto.io · Spec · Paper · Discord

zap-fix layers institutional trading semantics over the ZAP transport. Post-quantum confidentiality, mutual authentication, and zero-copy parse come from the wire; this repo only adds the institutional trading message shape.

Status

v0.1 — schema-first. This repo currently ships:

• schema/zap_fix.zap — wire format spec in ZAP schema language

Reference implementations (Go, Rust, TS) land in v0.2 once zap-proto/spec provides cross-language codegen for the schema.

Why

Property	FIX-over-TCP / FIX-over-TLS	zap-fix
Confidentiality	TLS (classical)	X-Wing hybrid PQ (default)
Authentication	bearer / TLS cert	KEM keypair at transport
Wire encoding	text or per-protocol binary	ZAP wire, zero-copy
Identity binding	DNS / cert chain	zap-rns keypair
Future-quantum	classical only	hybrid by construction

By the composability theorem, zap-fix inherits ZAP-base's PQ confidentiality and mutual auth automatically — no fix-specific PQ analysis required.

Sub-protocol family

• zap-http — HTTP request/response over ZAP
• zap-ws — multi-stream pubsub
• zap-fix — FIX 4.4 / 5.0 trading channel
• zap-rns — KEM-bound service naming
• zap-mcp — Model Context Protocol over ZAP
• zap-acp — Agent Communication Protocol
• zap-a2a — Google Agent2Agent over ZAP

License

MIT OR Apache-2.0