aster-api-auth-v3
starsforks
How to install aster-api-auth-v3?
asterdex/aster-skills-hub/aster-api-auth-v3
$npx -y skills add asterdex/aster-skills-hub --skill aster-api-auth-v3EIP-712 signed requests for Aster Futures API v3. Nonce, signature payload, request format. Use when calling TRADE, USER_DATA, USER_STREAM, or MARKET_DATA.
SKILL.md
| 1 | # Aster API Authentication |
| 2 | |
| 3 | **Base:** https://fapi.asterdex.com. Signed: send timestamp (ms), signature; optional recvWindow (default 5000, ≤5000). |
| 4 | |
| 5 | | Param | Description | |
| 6 | |-------|--------------| |
| 7 | | user | Main account wallet | |
| 8 | | signer | API wallet | |
| 9 | | nonce | Current time, microseconds | |
| 10 | | signature | EIP-712 (hex) | |
| 11 | |
| 12 | **Nonce:** Current system time in µs; invalid if ±~5s. Prefer monotonic (e.g. now_s×1e6 + sequence). Example: see reference. |
| 13 | |
| 14 | **Signing:** (1) Param string: key=value, sort ASCII, all strings; include nonce, user, signer. (2) EIP-712: domain name "AsterSignTransaction", version "1", chainId 1666, verifyingContract "0x0000...0000"; type "Message", field "msg" = param string. (3) Encode typed data, sign with API wallet private key (ECDSA), hex. (4) Add signature to query or body; POST/DELETE: application/x-www-form-urlencoded. **Security:** Env vars for user, signer, key. GET /fapi/v3/time if clock skew. |
| 15 | |
| 16 | **Note on chainId 1666 (SEC-08):** The chainId `1666` used in the EIP-712 signing domain is an **off-chain signing identifier specific to AsterDex**. It is NOT the Harmony ONE network chainId, even though Harmony uses the same number. This chainId is used exclusively for API request signing and has no relation to the on-chain deposit chainId (ETH=1, BSC=56, Arbitrum=42161). Do not confuse the two. |
| 17 | |
| 18 | Payload shapes: [reference.md](reference.md). |
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