asterdex/aster-api-spot-websocket-v1
skills/aster-api-spot-websocket-v1/SKILL.md
WebSocket market + user data streams for Aster Spot API v1. Subscription model, stream names, listenKey (/api/v1/listenKey). Use when implementing real-time spot market or user events. listenKey = USER_STREAM; see aster-api-spot-auth-v1.
$ install --global
skillsauthnpx skillsauth add asterdex/aster-skills-hub aster-api-spot-websocket-v1Install this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 3, 2026, 10:53 AM5.8s2 files scanned
SKILL.md
- name:
- aster-api-spot-websocket-v1
- description:
- WebSocket market + user data streams for Aster Spot API v1. Subscription model, stream names, listenKey (/api/v1/listenKey). Use when implementing real-time spot market or user events. listenKey = USER_STREAM; see aster-api-spot-auth-v1.
Aster Spot API WebSocket (v1)
Base: wss://sstream.asterdex.com. Raw: /ws/<streamName>. Combined: /stream?streams=name1/name2/... → {"stream":"<name>","data":<payload>}. Stream names lowercase (e.g. btcusdt).
Limits: Connection 24h; ping every 5 min → pong within 15 min; 5 msg/s; max 1024 streams.
Market: subscribe / unsubscribe
JSON: Subscribe {"method":"SUBSCRIBE","params":["btcusdt@aggTrade","btcusdt@depth"],"id":1} → {"result":null,"id":1}. Unsubscribe: UNSUBSCRIBE + params. List: LIST_SUBSCRIPTIONS.
Stream names (market)
| Stream | Description |
|--------|-------------|
| <symbol>@aggTrade | Aggregate trades |
| <symbol>@trade | Tick-by-tick trades |
| <symbol>@kline_<interval> | Kline (e.g. 1m, 1h) |
| <symbol>@depth, @depth@100ms | Diff. book depth (1000ms or 100ms) |
| <symbol>@miniTicker | 24h mini ticker |
| !miniTicker@arr | All mini tickers |
| <symbol>@ticker | 24h ticker |
| !ticker@arr | All tickers |
| <symbol>@bookTicker | Best bid/ask |
| !bookTicker | All book tickers |
User data stream (USER_STREAM)
- Start: POST /api/v1/listenKey →
{ "listenKey": "..." }(existing key extended 60 min). API key in header. - Connect: wss://sstream.asterdex.com/ws/<listenKey>.
- Keepalive: PUT /api/v1/listenKey with listenKey (e.g. every 30 min).
- Close: DELETE /api/v1/listenKey with listenKey.
Events: outboundAccountPosition (balance), executionReport (order update).
Order book sync (depth)
- Subscribe to
<symbol>@depth; buffer events. - Snapshot: GET /api/v1/depth?symbol=SYMBOL&limit=1000.
- Discard events with
u≤ lastUpdateId; first valid:U≤ lastUpdateId+1 andu≥ lastUpdateId+1. - Each event:
pu= previousu; else re-sync. Qty absolute; 0 = remove level.
Payload shapes: reference.md.
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