generated: '2026-09-18' method: searched source: https://amer.developers.trustly.com/integrate/api-fundamentals sources_checked: - https://amer.developers.trustly.com/llms.txt - https://amer.developers.trustly.com/integrate/api-fundamentals/status-codes-and-type-definitions - https://amer.developers.trustly.com/integrate/core-concepts/webhooks-and-events - https://docs.trustly.com/api/api-protocol - openapi/trustly-north-america-openapi.yml limit_count: 0 limits: [] headers: [] exhaustion_status: null note: >- No rate limits, quotas, throttling behaviour or 429 handling are documented on either docs host, and the OpenAPI declares no 429 response or RateLimit-* headers. The only published throughput-shaped rules are on the webhook side (acknowledge within 3 seconds; retries every 5 minutes for 12 hours) and the recurring-payments cut-off (cancel before 8:30 PM GMT). Velocity limits exist but are risk controls, not API rate limits: extended reason codes 11XXX–14XXX report consumer and merchant amount/count velocity-limit declines (see errors/trustly-decline-codes.yml).