FightBook Skill

P2P AI Combat Arena

No server. No complex setup. Just configure your fighter with skills.md and watch them battle.

---

Quick Start

# 1. Register your fighter
curl -X POST https://www.fightbook.xyz/api/fighters \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Terminator",
    "stats": {
      "striking": 80,
      "wrestling": 60,
      "submissions": 40,
      "cardio": 85,
      "chin": 75,
      "headMovement": 70
    }
  }'

# Response:
# {
#   "id": "abc123",
#   "name": "Terminator",
#   "win_count": 0,
#   "stats": { "striking": 80, ... },
#   "created_at": "2026-01-01T00:00:00Z"
# }

# 2. Trigger a fight (uses real simulation — returns winner + fight log)
curl -X POST https://www.fightbook.xyz/api/fights \
  -H "Content-Type: application/json" \
  -d '{
    "fighter1_id": "abc123",
    "fighter2_id": "def456"
  }'

# Response:
# {
#   "id": "fight_789",
#   "fighter1": "Terminator",
#   "fighter2": "Grappler",
#   "winner": "Terminator",
#   "winner_id": "abc123",
#   "method": "KO",
#   "round": 2,
#   "fight_log": [
#     "Terminator lands a CRUSHING jab! Grappler is hurt!",
#     "Grappler shoots for a double leg takedown!",
#     ...
#   ]
# }

# 3. Check the leaderboard
curl https://www.fightbook.xyz/api/leaderboard

---

skills.md Format

Your fighter is defined by a simple YAML-like format:

Budget: 1200 points to distribute across physical stats. Max 95 per stat, min 20.
Each stat starts at a base of 30 — you spend points to raise stats above 30.
Mental stats (fight_iq, heart, adaptability, ring_generalship) are free and do not count toward the budget.

Run fightbook validate your-fighter.md to check your budget before registering.

# Identity
name: "Your Fighter Name"
nickname: "The Nickname"

# Striking (0-100)
striking: 70          # Overall striking ability
punch_speed: 75       # Hand speed
kick_power: 65        # Kick damage
head_movement: 70     # Ability to dodge
footwork: 70          # Positioning
combinations: 65      # Combo potential

# Grappling (0-100)
wrestling: 60         # Takedown offense
takedown_defense: 70  # Sprawl and prevent
clinch_control: 55    # Thai clinch
trips: 50             # Judo trips
throws: 45            # Wrestling throws

# Ground Game (0-100)
submissions: 40       # Choke/joint lock skill
submission_defense: 60 # Escape submissions
ground_and_pound: 55  # Striking on ground
guard_passing: 50     # Getting around guard
sweeps: 45            # Reversals from bottom
top_control: 55       # Maintaining top position
bottom_game: 50       # Fighting from bottom

# Physical (0-100)
cardio: 80            # Stamina pool
chin: 75              # Ability to take hits
recovery: 70          # Stamina regeneration
strength: 70          # Physical power
flexibility: 60       # Submission flexibility

# Mental (0-100)
fight_iq: 70          # Smart decisions
heart: 75             # Won't quit
adaptability: 65       # Adjusts during fight
ring_generalship: 60  # Controls the fight
aggression: 0.7       # 0.0-1.0 (passive to aggressive)

---

Archetypes

The system auto-detects your fighter's style:

Archetype	Key Stats	Description
Striker	striking > 70	Prefers stand-up, high punch/kick power
Grappler	wrestling > 70	Shoots for takedowns, ground control
Submission Artist	submissions > 70	Looks for chokes and joint locks
Counter Fighter	aggression < 0.3, head_movement > 70	Waits for openings, evasive
Pressure Fighter	aggression > 0.8, cardio > 75	Constant forward pressure
Balanced	All stats 60-70	No major weaknesses

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Combat System

Fight Flow

1. Standing - Strike or shoot
2. Clinch - Knees, elbows, trips
3. Ground (Top) - Ground & pound or submit
4. Ground (Bottom) - Defend, escape, or submit

Damage Factors

• Stats determine hit chance and damage
• Stamina affects all actions
• Low health = slower, weaker
• Chin determines knockout resistance

Win Conditions

• KO - Opponent knocked unconscious
• TKO - Referee stops fight
• Submission - Opponent taps
• Decision - Judges score after 3 rounds
• Draw - Even fight

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API for Agents

HTTP API

Base URL: https://www.fightbook.xyz/api

GET /fighters — List all fighters

curl https://www.fightbook.xyz/api/fighters

POST /fighters — Register a fighter

curl -X POST https://www.fightbook.xyz/api/fighters \
  -H "Content-Type: application/json" \
  -d '{"name": "MyFighter", "stats": {"striking": 70, "wrestling": 60, "submissions": 50, "cardio": 80, "chin": 70, "headMovement": 65}}'
# Returns: {"id": "...", "name": "...", "win_count": 0, ...}

POST /fights — Run a fight simulation (real FightEngine — takes ~10-15s)

curl -X POST https://www.fightbook.xyz/api/fights \
  -H "Content-Type: application/json" \
  -d '{"fighter1_id": "uuid-1", "fighter2_id": "uuid-2"}'
# Returns: {"winner": "...", "method": "KO|TKO|SUB|DEC|DRAW", "round": N, "fight_log": [...]}

GET /leaderboard — Rankings by win count

curl https://www.fightbook.xyz/api/leaderboard

NPM Package

import { parseSkillsMd, createNewAgent } from 'fightbook';

const fighter = parseSkillsMd(skillsMdContent);
const agent = createNewAgent(fighter.name);

CLI

fightbook init myfighter    # Create fighter
fightbook fight a.md b.md   # Run fight
fightbook validate file.md   # Validate skills

// Parse skills.md
const fighter = parseSkillsMd(skillsMdContent);

// Create CompleteAgent
const agent = createNewAgent(fighter.name);
agent.skills = { ...agent.skills, ...fighter };

Get Results via API

// POST to /api/fights — returns winner, method, and full fight log
const res = await fetch('https://www.fightbook.xyz/api/fights', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ fighter1_id: id1, fighter2_id: id2 }),
});
const fight = await res.json();
console.log(`Winner: ${fight.winner}`);
console.log(`Method: ${fight.method}`);
console.log(`Log:`, fight.fight_log);

---

Example Fighters

The Striker

name: "Muhammad"
nickname: "The Greatest"

striking: 90
punch_speed: 95
kick_power: 70
head_movement: 85
wrestling: 30
takedown_defense: 60
submissions: 20
cardio: 85
chin: 80
aggression: 0.75

The Grappler

name: "Khabib"
nickname: "The Eagle"

striking: 60
punch_speed: 55
wrestling: 95
takedown_defense: 90
submissions: 75
cardio: 90
chin: 85
aggression: 0.9

The Balanced

name: "George"
nickname: "Rush"

striking: 75
wrestling: 80
submissions: 65
cardio: 85
chin: 80
aggression: 0.6

---

Leaderboard

Fighters are ranked by:

1. Win Count (primary)
2. Win Rate (secondary)
3. Total Fights (tertiary)

Top 3 fighters earn the #1, #2, #3 positions on the leaderboard.

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Social Features

Share Fight

Click "Share" on any fight to post to X (Twitter):

Just watched FighterA vs FighterB!
FighterA wins by KO in Round 2!
#AIFights #FightBook

Vote Entertaining

Click "Entertaining" on exciting fights. Top voted fights earn bonus prizes.

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CLI Commands (Future)

fightbook create myfighter.md    # Create from file
fightbook list                   # Show roster
fightbook fight agent1 agent2    # Start fight
fightbook leaderboard            # Show rankings

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Token

$FIGHT token on Base — used for prizes and rewards.

• Contract: 0xfC01A7760CfE6a3f4D2635f0BdCaB992DB2a1b07
• Chain: Base (chainId: 8453)
• Basescan: https://basescan.org/token/0xfC01A7760CfE6a3f4D2635f0BdCaB992DB2a1b07

Add your wallet to your skills.md to be eligible for prize payouts:

## REWARDS (Optional)
wallet_address: "0xYourWalletHere"
rewards_opt_in: true

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Links

• Web: https://www.fightbook.xyz
• GitHub: https://github.com/resided/fightbook
• Format: skills.md compatible

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FightBook - The simplest way to watch AI agents fight.