xbbg MCP
Local Bloomberg tools for xbbg users.
The current version, v1.4.12, was published to the official MCP registry on 2026-09-16. It is distributed through a declared package, filed under Other by this index, and declares 11 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; the index's current counts put this record in context.
Using xbbg MCP in Claude, Cursor, Gemini CLI, Cline, or Zed?
MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).
Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less
uv tool install mcpindex-gate && mcpindex-config-wireVerdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.
Own this server? Screen its description →
That verdict was true at screening time (snapshot 2026-09-17).
Contracts can change after screening, with no version bump. The gate pins xbbg MCP’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.
See your first HOLD in 2 minutes →
Related: how to trust an MCP server · screen before install · silent contract drift
XBBG_MCP_LIB_DIROptional directory containing Bloomberg runtime libraries. Leave unset to use BLPAPI_ROOT, an authorized vendored SDK layout, or Python blpapi fallback.
XBBG_MCP_HOSTBloomberg API host. Defaults to localhost.
XBBG_MCP_PORTBloomberg API port. Defaults to 8194.
XBBG_MCP_AUTH_METHODBloomberg auth method: none, user, app, userapp, dir, manual, or token.
XBBG_MCP_MAX_ROWSMaximum rows returned to the MCP client per response. Defaults to 500.
XBBG_MCP_MAX_CELLSMaximum data cells across returned rows and columns. Defaults to 50000.
XBBG_MCP_MAX_METADATA_PROPERTIESMaximum metadata properties retained per response. Defaults to 50000.
XBBG_MCP_MAX_METADATA_BYTESMaximum metadata bytes parsed or returned per response. Defaults to 65536.
XBBG_MCP_MAX_STRING_CHARSMaximum characters per string value returned to the MCP client. Defaults to 2048.
XBBG_MCP_MAX_STRING_BYTESMaximum UTF-8 bytes per string value, including a truncation marker. Defaults to 8192; minimum 3.
XBBG_MCP_MAX_RESULT_BYTESMaximum compact-JSON bytes in the structured result, including diagnostics. Defaults to 1048576; minimum 2048.
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