routes:
/         root (this route)
/cache    returns cacheable but delayed (500ms) response
/cpu      performs CPU-intensive operation, requires API token
/exit     causes server process to exit immediately, requires API token
/headers  returns request headers in JSON
/health   returns application health info
/ip       returns client IP (uses X-Forwarded-For if present, otherwise remote IP)

Include API token in X-Api-Token header.
Source commit: ceaa7f106311bb93a5b6b08d6b166c196ab25cba