PaymentIdentifierInfo (payment_identifier/types.py)

Pydantic models for payment‑identifier extension, validating idempotency keys and providing JSON schema.

# Source: https://github.com/x402-foundation/x402 | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
# Provided via justclaw.it.com; keep this notice with the code.
"""Type definitions for the Payment-Identifier Extension.

Enables clients to provide an idempotency key that resource servers
can use for deduplication of payment requests.
"""

from __future__ import annotations

import re
from typing import Any

from pydantic import BaseModel, Field

# Extension identifier constant for the payment-identifier extension
PAYMENT_IDENTIFIER = "payment-identifier"

# Minimum length for payment identifier
PAYMENT_ID_MIN_LENGTH = 16

# Maximum length for payment identifier
PAYMENT_ID_MAX_LENGTH = 128

# Pattern for valid payment identifier characters (alph

... (truncated -- full source via MCP)