Limits
Every limit in one place: ingest request size and concurrency, query time ranges, raw SQL, alert rules, event fields, and API and MCP rate limits.
Ingest
See Ingest API for status codes and retry guidance.
| Limit | Value | Over the limit |
|---|---|---|
| Request body | 20 MiB compressed, 160 MiB decompressed | 413 |
| Request duration | 30 seconds | 503, retry after 5 s |
| Concurrent requests | 1,000 in flight per organization | 429, retry after 1 s |
| Source token rate | Set per source token, in requests per second | 429, retry after 1 s |
| Compression | gzip only | 415 |
| Session replay | 1 GiB of uncompressed data per recording | Recording stops at the limit |
Product events and session events
See Product events API. An event that breaks a dropped rule is discarded silently; the rest of the batch is still stored. Other fields are truncated to their limit.
| Field | Limit | Over the limit |
|---|---|---|
| Event name | 128 bytes; no $ prefix except $screen | Dropped |
| Event timestamp | 30 days in the past to 1 day in the future | Dropped |
| User, visitor, session and group IDs | 256 bytes | Truncated |
| Page path | 1 KiB | Truncated |
| URL | 2 KiB | Truncated |
| Session event message | 1 KiB | Truncated |
| Session event attributes | 32 per event; keys 64 bytes, values 1 KiB | Truncated |
Queries
The dashboard, the API and the MCP tools share these limits. Queries time out after 30 seconds.
| Query | Longest time range |
|---|---|
| Charts and time series | 31 days |
| Trace and log lists | 7 days |
| Breakdowns (top-N by service, route, …) | 30 days |
| Breakdowns with no filter | 24 hours |
| Attribute and metric discovery | 30 days |
| Log pattern mining | 24 hours |
A time series returns at most 1,500 points. Bucket width is chosen from the range, from 1 minute up to 1 day.
Raw SQL
See SQL reference.
| Limit | Value |
|---|---|
| Query text | 32,768 characters |
| Rows returned | 1,000 (more is an error) |
| Result size | 5 MB of JSON; 64,000 characters per cell |
| Execution time | 10 seconds; 5 to 25 seconds inside an alert rule, by its check interval |
Alert rules
| Limit | Value |
|---|---|
| Evaluation window | 1 minute to 24 hours |
| Check interval | 1 to 60 minutes. Auto is a fifth of the window, from 1 to 5 minutes |
| Groups per raw-SQL alert | 100 |
| Tags per rule | 20, up to 32 characters each |
| Notification template | 4,000 characters for the title and for the body |
| Webhook response time | 15 seconds |
| Webhook delivery attempts | 5 |
API and MCP rate limits
| Surface | Limit | Over the limit |
|---|---|---|
Maple API (/v2) | 600 requests per 60 seconds per key | 429, Retry-After: 60 |
| MCP server requests | 120 per 10 seconds per key or user | 429, Retry-After: 10 |
| API list pages | limit 1 to 100, default 20 | 400 |
Rate limits are counted per edge location, so treat them as approximate rather than an exact global budget.