Spaces:
Paused
Paused
File size: 11,798 Bytes
f0fd6e7 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 | """
CGAE Contract System (Section 3.2.2 of cgae.tex)
Implements:
- CGAE Contracts: C = (O, Phi, V, T_min, r, p)
- Contract lifecycle: creation, acceptance, execution, verification, settlement
- Budget ceiling enforcement per tier
- Escrow mechanism for rewards and penalties
"""
from __future__ import annotations
import uuid
from dataclasses import dataclass, field
from enum import Enum
from typing import Any, Callable, Optional
from cgae_engine.gate import Tier, DEFAULT_BUDGET_CEILINGS
class ContractStatus(Enum):
OPEN = "open" # Available for bidding
ASSIGNED = "assigned" # Accepted by an agent
EXECUTING = "executing" # Agent is working on it
VERIFYING = "verifying" # Output submitted, verification pending
COMPLETED = "completed" # Verified and settled
FAILED = "failed" # Constraint violation or timeout
CANCELLED = "cancelled" # Cancelled by issuer
EXPIRED = "expired" # No agent accepted in time
@dataclass
class Constraint:
"""A machine-verifiable constraint (element of Phi)."""
name: str
description: str
verify: Callable[[Any], bool] # V: Output -> {0, 1}
def check(self, output: Any) -> bool:
return self.verify(output)
@dataclass
class CGAEContract:
"""
A valid CGAE contract (Definition 5 in paper).
C = (O, Phi, V, T_min, r, p)
"""
contract_id: str
objective: str # O: task description
constraints: list[Constraint] # Phi: machine-verifiable constraints
min_tier: Tier # T_min: minimum required tier
reward: float # r: reward for successful completion
penalty: float # p: penalty for constraint violation
issuer_id: str # Who posted the contract
deadline: float # Time limit for completion
# Mutable state
status: ContractStatus = ContractStatus.OPEN
assigned_agent_id: Optional[str] = None
assigned_time: Optional[float] = None
output: Any = None
verification_result: Optional[bool] = None
settlement_time: Optional[float] = None
# Metadata
domain: str = "general"
difficulty: float = 0.5 # 0-1 scale, used for simulation
created_time: float = 0.0
def verify_output(self, output: Any) -> tuple[bool, list[str]]:
"""
Run all constraints against the output.
Returns (passed, list_of_failed_constraint_names).
"""
failures = []
for constraint in self.constraints:
if not constraint.check(output):
failures.append(constraint.name)
return len(failures) == 0, failures
def to_dict(self) -> dict:
return {
"contract_id": self.contract_id,
"objective": self.objective,
"min_tier": self.min_tier.name,
"reward": self.reward,
"penalty": self.penalty,
"status": self.status.value,
"domain": self.domain,
"difficulty": self.difficulty,
"assigned_agent_id": self.assigned_agent_id,
"issuer_id": self.issuer_id,
"deadline": self.deadline,
}
class ContractManager:
"""
Manages the lifecycle of CGAE contracts.
Enforces budget ceilings, handles escrow, and tracks economic flow.
"""
def __init__(self, budget_ceilings: Optional[dict[Tier, float]] = None):
self.budget_ceilings = budget_ceilings or DEFAULT_BUDGET_CEILINGS
self._contracts: dict[str, CGAEContract] = {}
self._agent_active_exposure: dict[str, float] = {} # agent_id -> sum of penalties
self._escrow: dict[str, float] = {} # contract_id -> escrowed amount
self._events: list[dict] = []
self._total_rewards_paid: float = 0.0
self._total_penalties_collected: float = 0.0
@property
def contracts(self) -> dict[str, CGAEContract]:
return dict(self._contracts)
@property
def open_contracts(self) -> list[CGAEContract]:
return [c for c in self._contracts.values() if c.status == ContractStatus.OPEN]
def create_contract(
self,
objective: str,
constraints: list[Constraint],
min_tier: Tier,
reward: float,
penalty: float,
issuer_id: str,
deadline: float,
domain: str = "general",
difficulty: float = 0.5,
timestamp: float = 0.0,
) -> CGAEContract:
"""Create a new contract and add it to the marketplace."""
contract_id = f"contract_{uuid.uuid4().hex[:12]}"
contract = CGAEContract(
contract_id=contract_id,
objective=objective,
constraints=constraints,
min_tier=min_tier,
reward=reward,
penalty=penalty,
issuer_id=issuer_id,
deadline=deadline,
domain=domain,
difficulty=difficulty,
created_time=timestamp,
)
self._contracts[contract_id] = contract
# Escrow the reward
self._escrow[contract_id] = reward
self._log_event("contract_created", timestamp, {
"contract_id": contract_id, "min_tier": min_tier.name,
"reward": reward, "penalty": penalty, "domain": domain,
})
return contract
def assign_contract(
self,
contract_id: str,
agent_id: str,
agent_tier: Tier,
timestamp: float = 0.0,
) -> bool:
"""
Assign a contract to an agent. Enforces:
1. Agent tier >= contract min_tier
2. Agent's total exposure + this penalty <= budget ceiling
"""
contract = self._get_contract(contract_id)
if contract.status != ContractStatus.OPEN:
return False
# Tier check
if agent_tier < contract.min_tier:
return False
# Budget ceiling check (Theorem 1: Bounded Economic Exposure)
current_exposure = self._agent_active_exposure.get(agent_id, 0.0)
ceiling = self.budget_ceilings[agent_tier]
if current_exposure + contract.penalty > ceiling:
return False
# Assign
contract.status = ContractStatus.ASSIGNED
contract.assigned_agent_id = agent_id
contract.assigned_time = timestamp
self._agent_active_exposure[agent_id] = current_exposure + contract.penalty
self._log_event("contract_assigned", timestamp, {
"contract_id": contract_id, "agent_id": agent_id,
"exposure_after": self._agent_active_exposure[agent_id],
"ceiling": ceiling,
})
return True
def submit_output(
self,
contract_id: str,
output: Any,
timestamp: float = 0.0,
) -> tuple[bool, list[str]]:
"""
Submit output for a contract. Runs verification against constraints.
Returns (passed, failed_constraints).
"""
contract = self._get_contract(contract_id)
if contract.status not in (ContractStatus.ASSIGNED, ContractStatus.EXECUTING):
raise ValueError(f"Contract {contract_id} is not in assignable state: {contract.status}")
contract.output = output
contract.status = ContractStatus.VERIFYING
passed, failures = contract.verify_output(output)
contract.verification_result = passed
return passed, failures
def settle_contract(
self,
contract_id: str,
timestamp: float = 0.0,
) -> dict:
"""
Settle a verified contract. Distributes reward or penalty.
Returns settlement details.
"""
contract = self._get_contract(contract_id)
if contract.status != ContractStatus.VERIFYING:
raise ValueError(f"Contract {contract_id} not in verifying state")
agent_id = contract.assigned_agent_id
settlement = {"contract_id": contract_id, "agent_id": agent_id}
if contract.verification_result:
# Success: release escrow to agent
contract.status = ContractStatus.COMPLETED
settlement["outcome"] = "success"
settlement["reward"] = contract.reward
settlement["penalty"] = 0.0
self._total_rewards_paid += contract.reward
else:
# Failure: agent pays penalty
contract.status = ContractStatus.FAILED
settlement["outcome"] = "failure"
settlement["reward"] = 0.0
settlement["penalty"] = contract.penalty
self._total_penalties_collected += contract.penalty
# Release exposure
current_exposure = self._agent_active_exposure.get(agent_id, 0.0)
self._agent_active_exposure[agent_id] = max(0, current_exposure - contract.penalty)
# Clean up escrow
self._escrow.pop(contract_id, None)
contract.settlement_time = timestamp
self._log_event("contract_settled", timestamp, settlement)
return settlement
def expire_contracts(self, current_time: float) -> list[str]:
"""Expire contracts past their deadline."""
expired = []
for contract in self._contracts.values():
if contract.status == ContractStatus.OPEN and current_time > contract.deadline:
contract.status = ContractStatus.EXPIRED
self._escrow.pop(contract.contract_id, None)
expired.append(contract.contract_id)
elif contract.status in (ContractStatus.ASSIGNED, ContractStatus.EXECUTING):
if current_time > contract.deadline:
contract.status = ContractStatus.FAILED
contract.verification_result = False
agent_id = contract.assigned_agent_id
if agent_id:
exposure = self._agent_active_exposure.get(agent_id, 0.0)
self._agent_active_exposure[agent_id] = max(
0, exposure - contract.penalty
)
self._total_penalties_collected += contract.penalty
self._escrow.pop(contract.contract_id, None)
expired.append(contract.contract_id)
return expired
def agent_exposure(self, agent_id: str) -> float:
"""Current economic exposure for an agent (Theorem 1)."""
return self._agent_active_exposure.get(agent_id, 0.0)
def get_contracts_for_tier(self, tier: Tier) -> list[CGAEContract]:
"""Get open contracts accessible to an agent at the given tier."""
return [
c for c in self._contracts.values()
if c.status == ContractStatus.OPEN and c.min_tier <= tier
]
def economics_summary(self) -> dict:
status_counts = {}
for c in self._contracts.values():
status_counts[c.status.value] = status_counts.get(c.status.value, 0) + 1
return {
"total_contracts": len(self._contracts),
"status_distribution": status_counts,
"total_rewards_paid": self._total_rewards_paid,
"total_penalties_collected": self._total_penalties_collected,
"total_escrowed": sum(self._escrow.values()),
"active_exposures": dict(self._agent_active_exposure),
}
def _get_contract(self, contract_id: str) -> CGAEContract:
if contract_id not in self._contracts:
raise KeyError(f"Contract {contract_id} not found")
return self._contracts[contract_id]
def _log_event(self, event_type: str, timestamp: float, data: dict):
self._events.append({
"type": event_type, "timestamp": timestamp, "data": data,
})
|