Guide

A-Share Data in Duet

Duet is Claude’s always-on agent. It inherits the user’s own Claude connectors; add a custom connector in Claude first, then Duet can query A-share data.

Duet has no separate MCP settings

There is no standalone MCP configuration inside Duet. Add a custom connector in Claude first, then let Duet use connectors on that Claude account.

  • URL: https://api.ashareapi.com/mcp
  • Auth: Authorization: Bearer <ashareapi Key>
  • Transport: Streamable HTTP
  • Duet does not store its own MCP config

Before you start

  • The user’s own Claude plan with Duet access (Pro/Max, research-preview region)
  • An ashareapi API key; use a separate read-only key
  • Verify the key: GET /v1/quote?code=sh600519

Add a custom connector in Claude

  • Open Claude → Settings → Connectors
  • Click Add custom connector
  • Enter https://api.ashareapi.com/mcp
  • Set Authorization: Bearer <Key>, or complete the auth flow shown
  • Save and confirm the connector is enabled

Claude custom connectors may use OAuth. If the page cannot set a header, use ?key= as a fallback; prefer headers in production.

Use it from Duet

Open Duet, confirm it inherited the connector from Claude, then ask.

Ask inside Duet
Get the latest quote for sh600519

Get 600519 revenue for 2026Q3

Show the last 30 daily K-lines for 600519

No tools or 401

401
Bearer missing in Claude
Reset auth; use ?key= only as fallback
Duet missing connector
Not enabled in Claude
Enable in Claude, reopen Duet
No custom connector entry
Plan/region restriction
Confirm Pro/Max and Duet preview access
Timeout
Result too large
Lower count / limit / num, then batch
Connection fails
URL/trailing slash
Try https://api.ashareapi.com/mcp/

Which tier: upgrade by workload

Quotes and K-lines can start on the base allowance; financials, batch calls, screening and research need a higher tier. See the full pricing page.

Trial
¥9.9 one-time
10k calls · 30 req/min · 24 endpoints
Financials, dividends, sectors; light research
Standard
¥29.9 one-time
100k calls · 120 req/min · 46 endpoints
Daily research, notices, fund flow and more
Pro
¥99 one-time
500k calls · 300 req/min · 80 endpoints
Screening, batch financials, agent research
Institutional
¥199/month
100k/day · 600 req/min · 96 endpoints
Teams, multiple IPs, institutional research

¥9.9 Trial · ¥29.9 Standard · ¥99 Pro · Institutional · Full pricing

Boundaries

  • ✅ Read-only data lookup and research summaries
  • ⛔ No automated trading, brokerage connection or return promises
  • ⛔ Not investment advice; explain numbers by API date and definition
  • ⛔ No stale close presented as a live quote

FAQ

Can Duet configure MCP by itself?

No. Duet uses connectors on the user’s Claude account; add the custom connector in Claude first.

Does the developer need a Claude subscription?

No. The developer only provides the MCP endpoint; users bring their own Claude account.

Bearer or Query Key?

Prefer a Bearer header in the Claude connector. Use ?key= only when the client cannot set headers.

Why is Duet missing?

Duet is a Claude Pro/Max research preview with regional and waitlist limits; confirm account eligibility.

Last updated: 2026-10-31

Duet connector inheritance follows Anthropic’s Claude Duet announcement and Claude Connectors docs, checked on 2026-10-31; MCP URL and Bearer auth follow the live ashareapi endpoint.

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