> ## Documentation Index
> Fetch the complete documentation index at: https://xoxno.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Plans and rate limits

> XOXNO infrastructure plans, rate limits, and connection quotas.

Public XOXNO endpoints are keyless. Gated features such as Relayer V3 require approval. Per-IP rate limits apply by default, and enterprise plans can provide custom limits and dedicated capacity.

## WebSocket limits

The Relayer WebSocket at `wss://relayer.xoxno.com/ws` enforces the following connection-level constraints:

| Parameter                             | Limit      |
| ------------------------------------- | ---------- |
| Topics per connection                 | 64         |
| Control messages per 5-second window  | 64         |
| Maximum message size                  | 4 MB       |
| Ping/pong heartbeat interval          | 30 seconds |
| Maximum concurrent connections per IP | 8          |

Exceeding 64 control messages in a 5-second window closes the connection. See [connection limits](/relayer/connection-limits) for reconnection strategy.

## REST rate limits

### Relayer API

The Relayer REST API at `https://relayer.xoxno.com` applies the following default rate limits:

| Endpoint category                               | Rate limit  | Burst      |
| ----------------------------------------------- | ----------- | ---------- |
| Transaction signing (`POST /v1/sign`)           | 100 req/min | 20 req/sec |
| Transaction broadcasting (`POST /v1/broadcast`) | 100 req/min | 20 req/sec |
| Network stats (`GET /v1/network-stats/*`)       | 300 req/min | 50 req/sec |
| Gas statistics (`GET /v1/gas-stats`)            | 300 req/min | 50 req/sec |

### Aggregator API

The DEX Aggregator at `https://swap.xoxno.com` applies these limits:

| Endpoint category                       | Rate limit         | Burst                            |
| --------------------------------------- | ------------------ | -------------------------------- |
| Quote (`GET /api/v1/quote`)             | 100 req/sec per IP | Shared with Aggregator endpoints |
| Pair config (`GET /api/v1/pair-config`) | 100 req/sec per IP | Shared with Aggregator endpoints |
| Health check (`GET /health`)            | 100 req/sec per IP | Shared with Aggregator endpoints |

Rate-limited responses return HTTP `429` with a `Retry-After` header. Every response includes `X-RateLimit-Remaining` so your client can self-throttle.

## Enterprise plans

Enterprise plans can provide higher throughput, dedicated connections, and SLA terms:

* Custom WebSocket topic subscription caps
* Dedicated connection pools with reserved capacity
* Priority transaction broadcasting
* Custom rate limits and direct engineering support

<Card title="Contact sales" icon="envelope" href="https://xoxno.com">
  Contact the XOXNO team to discuss an enterprise plan for your application.
</Card>