Configuration

csdn needs almost no configuration. There is no account, no API key, and no required environment variable. The settings that exist are the kit global flags, which apply to every command.

Request behavior

Flag	Meaning
--rate	Minimum delay between requests (e.g. --rate 1s)
--timeout	Per-request timeout
--retries	Retry attempts on rate limit or 5xx
--user-agent	Override the User-Agent sent with each request

By default csdn sends a full desktop Chrome header set (a real User-Agent, Accept-Language: zh-CN, and the Referer each surface expects), paces requests, and retries transient 429 and 5xx failures. Those headers are what keep a plain GET out of the anti-bot challenge, so override --user-agent only if you know what you are doing.

Output

Flag	Meaning
-o, --output	Output format (see output formats)
--fields	Comma-separated columns to show
--no-header	Omit the header row
--template	Go text/template applied per record
-n, --limit	Stop after N records
-q, --quiet	Suppress progress output
--color	Color: auto, always, or never

State and caching

Flag	Meaning
--data-dir	Override the data directory
--no-cache	Bypass on-disk caches
--profile	Named profile to load
--db	Tee every record into a store (e.g. out.db, postgres://...)
--dry-run	Print actions, do not perform them

Environment variables

None are required. csdn reads no credential or token from the environment. There is nothing to sign and no key to carry, so there is nothing to configure to open a surface. The only block is the anti-bot edge at the IP and session layer; see troubleshooting for that picture.