LiteLLM issue 48169: virtual MCP call double-counts limits

Evidence record

Reporter-provided reproduction of double limit reservations, omitted tool pricing and absent spend logging.

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Claim-level citations (3)

• supportsLiteLLM virtual MCP tool calls double-reserved limits but missed actual tool cost logs: The reporter observed two counted requests for a single virtual mcp_tool_call: rpm_limit 4 accepted only two such calls, max_parallel_requests 1 refused a single virtual call, and the configured direct-tool charge was absent.

  Issue 48169, Actual behavior and comparison to direct tools/call

• supportsLiteLLM virtual MCP tool calls double-reserved limits but missed actual tool cost logs: The reporter observed two request/concurrency accounting checks around one mcp_tool_call wrapper invocation, including failure at max_parallel_requests=1.

  Steps to reproduce; quota observations

• supportsLiteLLM virtual MCP tool calls double-reserved limits but missed actual tool cost logs: The reporter reports a configured underlying MCP tool price of 0.25 that was billed through direct calls but not through virtual wrapper calls, alongside missing spend records.

  Pricing and spend logging reproduction