This file has been handing out bodies that freeze the client, under the heading "MINIMAL known-good". 1. FutGetDraftCurrentState. The root container is a JSON ARRAY. The documented body was object-root, used the spelling DRAFTSQUAD_ON which is NOT an accepted squadState value, and embedded a full squad object. Anyone serving it would have reproduced the exact hang the entry existed to prevent, which is what happened live on 2026-08-03 when our generic /squad route answered this endpoint with a squad object. Path corrected too: it is ut/%s/squad/mode + /draft/state, not ut/%s/draft/state. The `squad/mode` segment was missing, which is why the URL is invisible to the request-template table. Established by live capture, not statically: FUN_180146ac0 appends the suffix to a caller-supplied buffer and has no resolvable callers. 2. FutGetDraftAward (0x1801510c0) has the same array-root prologue, and its documented object-root body would hang identically. Corrected, and marked TODO/CONFIRM on the member list, which was not re-verified this pass. Both of these survived because a census claimed only three array-root readers existed in the DLL. It missed one. The census run to check it was wrong in the other direction. ~23 of 86 top-level readers are still unclassified, so the file now says: do not serve any endpoint here until its root container is classified by reading the actual prologue, not by regex. 3. roundsInfo element: `score` and `penaltyScore` offsets were swapped (+0x10 / +0x18). 4. FutSeasonList: deserializer is 0x1801683f0, not 0x180167740 (that is the ELEMENT parser), and the root is an OBJECT with one key `seasons`(0x2ad), not an array. Someone documented the element parser's key set at the document level, and utas_server.py served that shape for months on the strength of this row. Three of the listed element keys are inner members of elgReq and inert at element level. Added: element ordering (type before divisionId), stride 0x318, the (0xb-divisionId) short, and the three array-loop members that must stay omitted. 5. Recorded on the season entry that the client has NEVER requested /season across 486 real requests, so no body there is observable yet. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VUT92pz6RWKih9dSr8ZpxW
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.