funman300 6cc22e5cc5 docs: freeze the known-good auction state and mark tradeOwner DISPROVEN
Records the live-client resolution so the market shape is now a fixture rather than
folklore, and so a future agent cannot burn deployments on tradeOwner again.

Confidence notes updated: tradeOwner remains FIFA17-HISTORICAL (it does exist in
the FIFA 17-era API) but "required by FIFA17.exe Transfer List Actions" is now
DISPROVEN for this client path -- it is not among the twelve atoms the client's
auctionInfo deserializer reads, and it was implemented, deployed, observed inert
and removed.

The real blockers are recorded as CONFIRMED live-client findings: trade/status
polling is load-bearing, `expires` must EVOLVE with wall-clock time (a frozen
value is structurally valid and behaviourally broken), and relist must persist
through the PK conflict that FIFA's re-sent ISStart necessarily causes.

Freezes the known-good bodies under docs/evidence/market-lifecycle-2026-08-17/
with a machine-checkable countdown proof (_index.json._countdown_proof records
expires decrementing, frozen:false) rather than asserting the clock in prose.

States the general rule this cost us: a response can pass differential parity and
render perfectly while still being wrong, because FIFA expects an evolving
server-side state machine, not a static object that resembles one.
2026-08-17 19:42:15 +00:00

OpenFUT

Offline Ultimate Team — like SPT, but for FIFA 23.

OpenFUT replaces EA's retired FUT servers with a fully offline, single-player backend. You own FIFA 23 legitimately. You just want to keep playing after EA shut down the servers.


Repositories

Repo Purpose
openfut-core Game-independent offline FUT backend
openfut-bridge FIFA 23 integration layer + reverse-engineering proxy

Architecture

FIFA 23 client
      │
      ▼
┌─────────────────┐
│  openfut-bridge │  ← intercepts FUT traffic, maps routes, logs unknown
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│  openfut-core   │  ← offline FUT backend: profiles, packs, squads, SBCs
└─────────────────┘
         │
         ▼
   SQLite database

Core is game-independent. It speaks a clean REST API and knows nothing about FIFA 23 internals.

Bridge is FIFA-specific. It speaks FIFA 23's wire protocol and translates it into Core API calls. Bridge is where all reverse engineering work happens.


Current Status

Feature Status
Local profiles + clubs Working
Coin system Working
Pack generator Working
Card collection Working
Squad builder Working
Objectives engine Working
SBC engine Working
Match rewards Working
NPC transfer market Working
Statistics Working
FIFA 23 integration 🔴 Reverse engineering in progress
Chemistry calculation 🟡 In progress
Full Draft mode 🟡 In progress
Squad Battles AI generator 🟡 In progress
Objectives claim flow 🟡 In progress

Running

# Start the offline backend
cd openfut-core
cargo run

# Start the proxy (for traffic capture / FIFA integration)
cd openfut-bridge
cargo run

Core listens on http://127.0.0.1:8080 by default. Bridge listens on http://127.0.0.1:8443 by default.


Design Principles

  • Offline-first. No EA account required. No internet connection needed.
  • Single-player only. This is not a multiplayer server emulator.
  • Data-driven. All cards, packs, SBCs, and objectives are JSON files. Everything is moddable.
  • Clean architecture. Core has zero knowledge of FIFA 23. Bridge has zero game logic.
  • No copyrighted assets. No real player images, no EA trademarks in data files.

Disclaimer

This project is not affiliated with EA Sports. You must own FIFA 23 legitimately to use this software. This project does not bypass any ownership verification and is intended only to restore offline playability of a game whose online services have been retired.

S
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