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Developer tools guides
Developer tool guides for timestamps, JSON debugging, JWT decoding, cron expressions, and trading calculators.
Futures PnL calculation explained
Learn the basic futures PnL formula and the limitations of simple PnL calculators.
2026-06-10How to convert UTC time to local time
A practical guide for converting UTC timestamps to local time for debugging, scheduling, and operations.
2026-06-10How to format JSON for API debugging
Practical JSON formatting and validation tips for reviewing API responses and request bodies.
2026-06-10How to read cron expressions
Learn the five fields of a standard cron expression and common scheduling pitfalls.
2026-06-10ISO 8601 vs Unix timestamp
Compare ISO 8601 strings and Unix timestamps for APIs, databases, logs, and debugging.
2026-06-10Position sizing for risk management
A neutral explanation of position sizing as a risk management calculation, not investment advice.
2026-06-10Trading session time zones explained
Understand why trading session timezone conversion matters and what a converter can and cannot tell you.
2026-06-10What is a Unix timestamp?
A practical explanation of Unix timestamps, the Unix epoch, and how developers use epoch time in APIs and logs.
2026-06-10Unix timestamp seconds vs milliseconds
Learn how to tell whether a timestamp is in seconds or milliseconds and why the difference matters.
2026-06-10What is JWT and how to decode it safely
Understand JWT structure, decoding, claims, and the difference between decoding and verifying a token.