Rate limits
Carrier campaign tier sets daily segments and MPS. AgentCell also enforces conversation streak, outbound caps, ignore lists, quiet hours, and 1 msg/sec/cell on pod cycle send.
Campaign planning (your 10DLC tier)
Throughput is roughly 2.25–225 MPS depending on campaign tier.
| Campaign | Est. daily segments |
|---|---|
| Sole proprietor | ~3,000 |
| Low volume | ~6,000 |
| High volume standard | ~30,000 |
| High volume highest trust | ~600,000 |
API 429 / 422 codes
| Code | Retriable |
|---|---|
| RATE_LIMITED | Yes — honor Retry-After |
| CONVERSATION_STREAK_LIMIT | No — contact must reply |
| OUTBOUND_LIMIT_REACHED | No — daily reset |
| IGNORED_RECIPIENT | No |
| TCPA_QUIET_HOURS | No — wait or queue_until_open |
Common errors
- RATE_LIMITED
Back off.
- CONVERSATION_STREAK_LIMIT
Wait for inbound.
Copy for Cursor / Claude
On RATE_LIMITED, read Retry-After and retry.
Pod cycle send: max 1 message / second / cell.
Quiet hours: TCPA_QUIET_HOURS on pod-scoped outbound.