Limits

Limit Value Scope On exceed
Bulk link creation, batch size 10,000 links per request POST /v1/links/bulk Not specified by the contract; split into multiple requests to stay under the limit.
Bulk link creation, request rate Per-second and per-minute caps, specific numbers vary by plan POST /v1/links/bulk 429 Too Many Requests. Check the X-RateLimit-Limit-Second / X-RateLimit-Limit-Minute headers on any response from this endpoint to see your current caps, and the -Remaining- variants to see how much headroom you have left.
Links list default page size 20 (itemsPerPage) POST /v1/links/list N/A — override itemsPerPage in the request body.
Domains list default page size 30 (itemsPerPage) GET /v1/domains N/A — override itemsPerPage in the query string.

The contract does not define a request-rate limit, quota headers, or a 429 status for any endpoint other than bulk link creation. If your integration needs a guaranteed number for another endpoint, confirm directly with Slimlink rather than assuming one.