Limits - Blast API Documentation
The following page showcases all the limitations inside the Blast API.
Each Blast API plan comes with a limit of requests per second. The limit is per project meaning that it is shared for all endpoints created in that project.
The limit is implemented using a sliding window algorithm. For example, let's assume that we have a plan that comes with a limit of 5 requests per second and have the following distribution of requests in the first second (each segment represents 0.1 seconds).
Legend:
S - successful request
R - rate-limited request
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| S | | | S | S | S | S | R | R | R |
|<------------------------------------->|
At 0.7s, we start hitting the rate limit since we already made
5 requests this second.
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 |
| S | | | S | S | S | S | R | R | R | | |
|<------------------------------------->|
At 1.1s we have only 4 requests in the sliding window so we can
make another one.
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 |
| S | | | S | S | S | S | R | R | R | | S | R | S |
|<------------------------------------->|
Since we made a request at 1.1s, we need to wait until 1.3s to make
another one.
Each project you create in your Blast API plan has a limit of 1000 WebSocket connections (this is shared across all the endpoints in the project).
The Blast API enforces the following limits for HTTP requests made against its endpoints:
Name | Limit |
|---|---|
HTTP Request Header | 8 KB |
HTTP Request Body | 1 MB |
HTTP Response Header | 8 KB |
HTTP Response Body | 128 MB |
Name | Limit |
|---|---|
Client -> Blast API WebSocket Message | 1 MB |
Blast API -> Client WebSocket Message | 128 MB |
- eth_getLogs requests can have a block range of at most 500 on the Free plan and 2000 blocks on the Developer and Startup plans for all chains that support this method
Last modified 1mo ago