funman300
18d864908e
The deliverable owed from the assessment brief. Ordered by cost of the measurement
that would settle each item, not by how important the outcome feels.
Headline reordering: the observation session ran and did NOT produce the match
shape. Seasons refuses with zero requests to any layer and Draft hangs, so both
routes into a match are blocked and /match is now behind a fix rather than in front
of one. The next task is instead one launch with FUT_MOVE_BODY=ack, which is the
only open problem where the decompiler has produced a verified necessary condition
that has never been satisfied.
Also recorded:
- The User-Agent split. Real client (ProtoHttp) vs our own probes. /clubUser and
/user/list have 93 and 180 recorded hits and not one came from the game. Every
"the client asks for X" claim predating the split is unsupported until rechecked.
- The narrowed-core measurement. The proposed boundary ("ownership and economy keyed
by opaque integer item ids") is correct and every per-item prediction held, but
narrowing is not what guts core: FIFA 17 relevance is. Six services totalling 869
lines model features with no FIFA 17 endpoint at all, survive narrowing perfectly,
and are worth nothing here. Suite: 61 of 101, not the 81 previously claimed.
Recommendation is to reuse the scaffolding and the 61 tests, not the service layer.
- Port timing stays "after", led by the match-result-shape argument: three of the
four queued items will change a response schema, and porting a placeholder schema
means porting the correction too.
- test_fut_contract.py is now implementation-independent (380 checks over HTTP), so
it can certify a Rust port. That is the port's main de-risking asset and it exists.
- A "What could make this plan wrong" section, including that a negative ack result
is not a refutation, and that every negative claim in ENDPOINT_MAP.md is weaker
than the corresponding positive one after the FutMoveCard retraction.
Standing requirements recorded, including the User-Agent filter default (required,
not yet implemented) and two wrong .rdata addresses still to correct.
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.