An API key can make portfolio reporting efficient, but convenience should not widen the account’s attack surface. A read-only reporting key should have a narrow purpose, a documented owner, and a revocation test. The workflow below covers creation, collection, validation, storage, and retirement. It assumes the exchange offers separate permission switches and that the user checks the current official API documentation before implementation.
Define the report before creating a key
List the endpoints you need: balances, orders, fills, deposits, withdrawals, or account metadata. Do not request a broad “all read” permission if the report needs only fills. Decide the time range, polling frequency, and retention period. A short written scope gives an incident responder a way to distinguish an expected request from an unexpected call.
Create the key in the official account
Enter the exchange through a saved official domain and require a strong login plus a second factor. Name the key by purpose and owner, not by a vague label such as “main.” Disable trading, withdrawals, transfer, and universal permissions. If an IP allowlist is available, use a fixed reporting host and record the address. Treat the secret as shown once; do not put it in a chat or source repository.
Build a safe collector
Store the key in a secret manager or protected environment variable and restrict file permissions. The collector should use HTTPS, verify the exchange’s documented signature scheme, and log request category, timestamp, response code, and latency without logging the secret or full account payload. Implement rate-limit handling and backoff. A failed request should not trigger an automatic permission increase or a second key from an unreviewed device.
Validate returned data
Compare API timestamps and timezone, pagination cursors, decimal precision, and symbol conventions. A balance endpoint may include available, locked, borrowed, or pending quantities; a fill export may omit internal transfers. Cross-check one sample against the account’s web interface and preserve the query time. Treat a missing page as an error, not as an empty account.
Separate raw and transformed data
Keep an immutable, encrypted raw response with a schema version, then create a transformed table for reporting. Hash files if a later audit matters. Document how fees, rebates, quote currencies, and partial fills are represented. Never overwrite a raw record when correcting a parser. That separation makes a software bug less likely to be mistaken for a missing trade.
Monitor and rotate
Alert on a request to an unapproved endpoint, a new source IP, repeated authentication errors, or a response shape change. Rotate the key on a schedule and after any device or staff change. Test revocation by disabling the key and confirming that the collector receives the documented authorization error; do not “test” by enabling trading.
Handle an incident without panic
If a key leaks, revoke it immediately through the official account, preserve logs, and review sessions, withdrawals, and permissions. A read-only key should not authorize funds movement, but the account may still be exposed through other credentials. Contact official support through the logged-in portal and never send a full secret or recovery phrase as proof of ownership.
Worked example: a monthly report
A monthly collector may need balances, fills, and deposits but never withdrawals. Give it a dedicated key, pin requests to the reporting host, and save the raw JSON with a schema version. If the exchange returns an empty page after a pagination cursor error, mark the report incomplete instead of writing a zero balance. Compare one fill with the web account and record timezone conversion. At month end, revoke a test key in a sandbox or a disposable account and document the expected authorization error. That evidence proves the lifecycle works before a production incident.
Frequently asked question
Should a reporting key have withdrawal permission for convenience?
No. Reporting does not require funds movement. A separate operational key, if truly needed, should have a different owner, scope, allowlist, and review path so a reporting compromise cannot become a withdrawal event.