fix: MCP 工具参数校验错误提示过于模糊，无法定位问题

[binggg]

Attribution issue

• issueId: issue_mo8wixix_yg65qg
• category: tool
• canonicalTitle: MCP 工具参数校验错误提示过于模糊，无法定位问题
• representativeRun: atomic-js-cloudbase-call-http/2026-04-21T17-31-53-uwanxk

Automation summary

**

• root_cause: The error message "400 invalid parameter value" from CloudBase API was not being handled by the existing error patterns in capi.ts or functions.ts. This resulted in vague error messages that didn't help users identify which parameter was wrong or how to fix it.
• changes:

1. mcp/src/tools/capi.ts: Added hasInvalidParameterValueError regex pattern and corresponding handling in buildCapiErrorMessage() to detect "invalid parameter value" errors. When detected, the tool now provides specific guidance about:

• Checking string parameters for empty values or illegal characters
• Verifying numeric parameters are within valid ranges
• Ensuring enum values use correct case-sensitive values
• Confirming required parameters have values
• Showing parameter type reference when available for tcb actions

2. mcp/src/tools/functions.ts: Added handling for "invalid parameter value" errors in buildFunctionOperationErrorMessage() with specific guidance for function deployment:

• runtime: Supported versions (Nodejs18.15, Nodejs16.13, Nodejs20.19) with case sensitivity note
• handler: Default values for Event vs HTTP functions
• functionName: Valid charact

Changed files

• mcp/src/tools/capi.ts
• mcp/src/tools/functions.ts

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Match InvalidParameterValue error code variant

The new detector only matches the spaced phrase invalid parameter value, but CloudBase control-plane responses commonly use the TCAPI code token InvalidParameterValue (see the x-tcapi-errorcodes lists in mcp/assets/control-plane/tcb-openapi.yaml, e.g. around lines 2411-2418). In that common case this branch will never run, so the newly added targeted guidance is skipped and users still get the generic fallback message.

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[binggg]

Attribution post-PR evaluation

• visibility: internal identifiers, run ids, and private links are intentionally omitted
• attempt: 1
• eval_scope: primary_only
• overall: PASSED
• summary: all planned evaluation cases passed
• updated_at: 2026-04-28T22:55:06.138Z

Cases

• [PASSED] — primary — evaluation passed

[binggg]

参考codex 代码 review结论