xbbg MCP
Links: Documentation · Quickstart · Configuration · Examples notebook · Contributing · Changelog
People who work with financial data, apache arrow and blpapi and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Rust.
VERIFIED ACTIVE
LAST COMMIT 2026-09-16 · ★ 715 · #70 OF 318 MAINTAINED FINANCE · VERIFIED 2026-09-18
Apache-2.0 · Rust servers · how we verify → /methodology
01 · Install xbbg MCP
Claude Desktop
Settings → Extensions → Install, then select the https://github.com/underloam/xbbg/releases/download/v1.4.12/xbbg-mcp-v1.4.12.mcpb .mcpb bundle02 · Evidence
Security posture
What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.
runs as Claude Desktop extension (.mcpb bundle)
license Apache-2.0 - declared in the repository
registry namespace io.github.underloam is GitHub-verified and matches the repo owner
03 · What xbbg MCP can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
Latest releases
v1.4.12 · 2026-09-11
Added · Explicit resource limits and ownership controls. Engines expose runtime_worker_threads / runtimeWorkerThreads (default 2) and max_subscription_sessions / maxSubscriptionSessions (default 32). Native Arrow…
v1.4.11 · 2026-09-02
Fixed · xbbg-mcp no longer mistakes a failed stdin worker or abnormal service stop for clean EOF. Stderr diagnostics are now best-effort instead of using eprintln!, whose panic on a closed host log pipe could kill the…
v1.4.10 · 2026-09-01
Fixed · The 1.4.9 Windows MCPB launcher refused every Bloomberg runtime older than 3.26.7.1, including current Python blpapi packages. The runtime gate introduced in 1.4.9 was seeded with the SDK version the release…
04 · Who maintains xbbg MCP
xbbg MCP is maintained by underloam. It's the only MCP server we track from this author; the repo dates to Nov 2018.
05 · Facts
- repository
- github.com/underloam/xbbg
- category
- finance - ranked #70 of 318 actively-maintained finance servers as of 2026-09-18.
- release cadence
- 10+ releases in the last 90 days (latest 2026-09-11)
- registry
- io.github.underloam/xbbg-mcp (active, first published 2026-09-16)
- packages
- mcpb:https://github.com/underloam/xbbg/releases/download/v1.4.12/xbbg-mcp-v1.4.12.mcpb
06 · xbbg MCP FAQ
What is xbbg MCP?
Links: Documentation · Quickstart · Configuration · Examples notebook · Contributing · Changelog
Is xbbg MCP still maintained?
Yes - as of 2026-09-18, its last commit was 2026-09-16 and it shipped 10+ releases in the last 90 days. We re-verify nightly.
07 · Alternatives to xbbg MCP
Alternatives to xbbg MCP
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- Akshare Let a model explore AKShare's 1000+ China market data functions on its own - search, inspect, call ★ 520 · 2026-09-18
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