Errors: AuthRequiredError message omits KALSHI_PRIVATE_KEY_PATH #215

Summary

AuthRequiredError.__init__ default message reads:

Provide key_id + private_key_path when constructing the client, or set KALSHI_KEY_ID + KALSHI_PRIVATE_KEY environment variables.

Only KALSHI_PRIVATE_KEY (in-memory PEM) is mentioned. README, docs/authentication.md, and docs/environment-variables.md all present KALSHI_PRIVATE_KEY_PATH as the primary/most-common option (file on disk). A user hitting this error and following the prompt will not realize the path-based env var exists.

Location

kalshi/errors.py:22-27

Evidence

# kalshi/errors.py:22-27
super().__init__(
    message
    or "This endpoint requires authentication. "
    "Provide key_id + private_key_path when constructing the client, "
    "or set KALSHI_KEY_ID + KALSHI_PRIVATE_KEY environment variables.",
    status_code=None,
)

# docs/authentication.md:37-38 (primary recommended pattern)
export KALSHI_KEY_ID="..."
export KALSHI_PRIVATE_KEY_PATH="~/.kalshi/private_key.pem"

Recommended fix

Reword:

or "This endpoint requires authentication. "
"Provide key_id + private_key_path when constructing the client, "
"or set KALSHI_KEY_ID + (KALSHI_PRIVATE_KEY_PATH or KALSHI_PRIVATE_KEY) "
"environment variables. See https://texascoding.github.io/kalshi-python-sdk/authentication/",

Add test: test_auth_required_error_mentions_both_env_vars.

Severity & category

medium / documentation, dx