avp-wallet-sdk 0.4.0

Python client for the AVP Agent Verification Protocol — multi-chain wallet trust scoring

avp-sdk

Python client for the AVP Agent Verification Protocol — multi-chain wallet trust scoring with Sybil resistance and ZK nullifiers.

Install

pip install avp-sdk

Zero dependencies. Pure Python stdlib.

Quick Start

from avp_sdk import AVPClient

client = AVPClient("https://avp-protocol.onrender.com")

# Step 1 — get a challenge message to sign
challenge = client.challenge("0xYourWallet", "ethereum")
print(challenge.message)  # sign this with your wallet

# Step 2 — submit the signature
result = client.verify(challenge, signature="0x...")
print(result.trust_score)   # 75
print(result.trust_tier)    # "verified"
print(result.permissions)   # ["read", "write", "governance_vote"]
print(result.jwt_token)     # "eyJ..."

# Step 3 — validate a token later
info = client.validate(result.jwt_token)
print(info.valid)           # True
print(info.wallet_address)  # "0xYourWallet"

Development Mode

Use TEST_ prefixed signatures to test without a real wallet:

result = client.quick_verify("0xTestWallet", "ethereum", "TEST_my_signature")
print(result.trust_tier)  # "basic"

Supported Chains

Chain	Value
Ethereum	ethereum
Polygon	polygon
BSC	bsc
Solana	solana

Trust Tiers

Tier	Score	Key Permissions
SOVEREIGN	80–100	governance_vote, admin_actions
VERIFIED	60–79	write, transfer_standard
BASIC	40–59	read, transfer_limited
UNTRUSTED	0–39	read only

Boost Trust Score

result = client.verify(
    challenge,
    signature="0x...",
    operator_id="my-operator",         # +15–25 points if operator has stake
    device_fingerprint="browser-hash", # +10 points
)

Error Handling

from avp_sdk import (
    AVPClient,
    AVPAuthError,
    AVPChallengeError,
    AVPRateLimitError,
    AVPSybilError,
    AVPTokenError,
    AVPConnectionError,
)

client = AVPClient("https://avp-protocol.onrender.com")

try:
    challenge = client.challenge("0xWallet", "ethereum")
    result = client.verify(challenge, signature="0x...")
except AVPAuthError:
    print("Signature verification failed")
except AVPChallengeError:
    print("Challenge expired or already used")
except AVPRateLimitError as e:
    print(f"Rate limited — retry in {e.retry_after}s")
except AVPSybilError:
    print("Wallet flagged as Sybil risk")
except AVPConnectionError:
    print("Could not reach AVP server")

Operators

Operators stake ETH-equivalent value to boost trust scores for their users.

# Register an operator
op = client.register_operator("my-operator", stake_amount=1.0)
print(op.is_active)      # True
print(op.trust_multiplier)  # 1.0

# Use operator in verification
result = client.verify(challenge, signature="0x...", operator_id="my-operator")
# Trust score gets +15 bonus from operator stake

Configuration

client = AVPClient(
    base_url="https://your-avp-instance.com",
    timeout=30,   # request timeout in seconds
    retries=3,    # retries on network errors
)

Run Tests

pip install pytest
pytest tests/ -v

Tests run against the live Render API. Requires internet connection.

Links

• AVP Protocol GitHub
• Live API Docs
• Report Issues

License

MIT — Oyewole Emmanuel Abiodun