Which strategy should I use for FastSpring Coupon API 1,000-Code Limit?
Decide whether to keep using GET /coupons/{coupon_id} with the new 1,000-code cap or migrate automation to the paginated coupon codes endpoint.
Blockers
- The codes array returned by GET /coupons/{coupon_id} is limited to a maximum of 1,000 items by default.
Who this is for
- low-ops
- high-scale
- small-team
Candidates
Keep GET /coupons/{coupon_id} only for coupon metadata and small code sets
As of 2026-04-03, FastSpring's February 23, 2026 change has already occurred. The official docs now state that the codes array returned by GET /coupons/{coupon_id} is limited to a maximum of 1,000 items by default. FastSpring introduced this cap to reduce timeouts and performance degradation on coupons with very large code lists. This option keeps existing integrations simple only if automation never needs more than 1,000 codes from a coupon.
When to choose
Use this when your workload is low-ops and the decisive fact is that each coupon stays under 1,000 codes or your automation only needs top-level coupon details. It is also acceptable when code enumeration is not part of the workflow and the capped response is sufficient.
Tradeoffs
Lowest migration effort and least code churn, but it is no longer safe for any workflow that depends on complete code inventory. Large coupons will silently require a second endpoint to get the full set.
Cautions
Do not treat the codes array on GET /coupons/{coupon_id} as a complete source of truth after February 23, 2026. The official docs explicitly recommend the separate coupon codes endpoint for lists over 1,000.
Migrate automation to GET /coupons/{coupon_id}/codes
FastSpring's January 30, 2026 changelog says integrations that rely on retrieving lists larger than 1,000 codes should migrate to GET /coupons/{coupon_id}/codes. The same changelog identifies this endpoint as the recommended path because it supports full pagination. As of 2026-04-03, this is the durable choice for any complete coupon-code sync, export, audit, or reconciliation workflow. It separates coupon metadata retrieval from large-list traversal and aligns with FastSpring's post-change guidance.
When to choose
Use this when you are high-scale or need complete and repeatable coupon-code enumeration. The decisive factor is whether your automation must remain correct after the 1,000-code cap, not whether the old endpoint still returns some codes.
Tradeoffs
More implementation work because automation must handle paginated retrieval, but it removes the correctness risk introduced by the capped response. It is the only option explicitly recommended by FastSpring for full code retrieval.
Cautions
Plan for pagination in every full-sync path and avoid mixing capped GET /coupons/{coupon_id} results with assumptions of completeness. If you still call the retrieve endpoint, use it for coupon details only and treat the codes list there as partial once coupons can exceed 1,000 entries.
Try with your AI agent
$ npm install -g pocketlantern $ pocketlantern init # Restart Claude Code, Cursor, or your MCP client, then ask: # "Which strategy should I use for FastSpring Coupon API 1,000-Code Limit?"