reserveRequestWeight is a Hyperliquid exchange-endpoint action that reserves additional API actions for a fee. According to the official documentation accessed on 2026-11-11, the documented price is 0.0005 USDC per reserved request, paid from your Perps balance.
What the action does
Use reserveRequestWeight to reserve additional API actions for a signed exchange request. The action is part of the Hyperliquid exchange endpoint and uses a signed request body.
The documented action fields are:
| Field | Type | Notes |
|---|---|---|
type | String | Must be reserveRequestWeight. |
weight | Number | Number of additional actions to reserve. |
destination | String, optional | An already-existing L1 user address. Omit when not set; the docs state it is omitted from hashing when unset. |
nonce and signature. The docs recommend using the current timestamp in milliseconds for nonce and using the Hyperliquid Python SDK to generate signatures.
Example request skeleton
{
"action": {
"type": "reserveRequestWeight",
"weight": 100,
"destination": "0x..."
},
"nonce": 1762800000000,
"signature": {}
}
This is a documentation-based skeleton. Omit destination unless you are reserving for an existing L1 user, and replace signature with the SDK-generated signature object.
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Cost calculation
At the documented rate of 0.0005 USDC per reserved request:
- 10 reserved actions:
10 × 0.0005 = 0.005 USDC - 100 reserved actions:
100 × 0.0005 = 0.05 USDC - 1,000 reserved actions:
1,000 × 0.0005 = 0.50 USDC
Practical notes
destinationis optional and must refer to an already-existing L1 user when provided.- When
destinationis unset, omit it from the request and from the hashed action. - Use a fresh
nonce, preferably the current timestamp in milliseconds. - If your integration hits rate-limit or rejection errors, check the Hyperliquid API rate limits and API error responses guides.
Source
- Hyperliquid Exchange endpoint documentation, accessed 2026-11-11.
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