MayStreet

MayStreet High Performance Query (HPQ) API

Low-latency, near-time market data query API delivered as a streaming WebSockets service so clients can process arbitrarily-sized result sets frame-by-frame without pagination. Publicly documented only through the workbench-hpq-springboard example notebooks and hpq.py client on GitHub, which name the UAT endpoint wss://mdx.uat.maystreet.com (the production mdx.maystreet.com host resolves in DNS but is entitlement-gated and not publicly reachable). Access requires a MayStreet/LSEG Analytics Workbench entitlement.

Documentation GitHub

Documentation

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Documentation

https://github.com/maystreet/workbench-hpq-springboard

Other Resources

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APIsJSON

https://raw.githubusercontent.com/api-evangelist/maystreet/refs/heads/main/apis.yml

API entry from apis.yml

aid: maystreet:maystreet-high-performance-query-api
name: MayStreet High Performance Query (HPQ) API
tags:
- Market Data
- WebSocket
- Streaming
- Tick Data
- Near-Time
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://github.com/maystreet/workbench-hpq-springboard
baseURL: wss://mdx.uat.maystreet.com
properties:
- url: https://github.com/maystreet/workbench-hpq-springboard
  type: Documentation
description: Low-latency, near-time market data query API delivered as a streaming WebSockets service
  so clients can process arbitrarily-sized result sets frame-by-frame without pagination. Publicly documented
  only through the workbench-hpq-springboard example notebooks and hpq.py client on GitHub, which name
  the UAT endpoint wss://mdx.uat.maystreet.com (the production mdx.maystreet.com host resolves in DNS
  but is entitlement-gated and not publicly reachable). Access requires a MayStreet/LSEG Analytics Workbench
  entitlement.