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API reference

Rate limits & idempotency

Limits keep the platform fast for everyone; idempotency keeps your retries safe.

https://api.mytabulon.com/v1

Rate limits

Limits are per key, per minute, and scale with your MyTabulon plan — Free: 120 requests (20 AI) · Plus: 300 (40 AI) · Pro: 600 (60 AI) · Max: 1,200 (120 AI). Every response includes X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, and X-RateLimit-Plan headers. A 429 includes Retry-After.

Limits by plan

requests per minute, per key
Plan   General   AI responses
Free     120          20
Plus     300          40
Pro      600          60
Max    1,200         120

Idempotency

Send an Idempotency-Key header on any POST. If the same key is sent again with the same payload, you get the original response back (with an Idempotent-Replay: true header) instead of a duplicate write. Reusing a key with a different payload returns 409 idempotency_conflict.

safe retries
curl https://api.mytabulon.com/v1/invoices \
  -H "Authorization: Bearer mtb_live_..." \
  -H "Idempotency-Key: order-8412" \
  -d '{ "client_id": "...", "due_date": "2026-07-01", "items": [...] }'