googleapis/mcp-toolbox · error

error getting parameters for tool %q: %w

Error message

error getting parameters for tool %q: %w

What it means

Error "error getting parameters for tool %q: %w" thrown in googleapis/mcp-toolbox.

Source

Thrown at internal/server/mcp/v20260728/manifests.go:134

// GenerateListToolsResult generates tools/list method result according to mcp schema
func GenerateListToolsResult(pMgr *primitives.PrimitiveManager, g group.Group, urlParams map[string]string, supportsSecureParams bool) (ListToolsResult, error) {
	mcpManifest := make([]Tool, 0, len(g.ToolNames))
	for _, toolName := range g.ToolNames {
		tool, ok := pMgr.GetTool(toolName)
		if !ok {
			return ListToolsResult{}, fmt.Errorf("tool does not exist: %s", toolName)
		}
		srcName := tool.GetSourceName()
		var src sources.Source
		if srcName != "" {
			src, ok = pMgr.GetSource(srcName)
			if !ok {
				return ListToolsResult{}, fmt.Errorf("unable to retrieve %s source for tool %q", srcName, tool.GetName())
			}
		}
		params, err := tool.GetParameters(src)
		if err != nil {
			return ListToolsResult{}, fmt.Errorf("error getting parameters for tool %q: %w", toolName, err)
		}

		// Skip a Tool that requires secure params extension if the client doesn't support it.
		if tool.HasSecureParams() && !supportsSecureParams {
			continue
		}
		toolManifest := generateToolManifest(toolName, tool.GetDescription(), tool.GetAuthRequired(), params, tool.GetAnnotations(src), urlParams)
		mcpManifest = append(mcpManifest, toolManifest)
	}
	res := ListToolsResult{
		Tools: mcpManifest,
		Result: Result{
			ResultType: resultTypeComplete,
		},
		CacheableResult: CacheableResult{
			TtlMs:      g.GetTTLMs(),
			CacheScope: cacheScope(g.GetCacheScope()),
		},

View on GitHub (pinned to 8cc6e09de2)

When it happens

Trigger: Thrown at internal/server/mcp/v20260728/manifests.go:134 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of googleapis/mcp-toolbox@8cc6e09de2 (2026-09-05). Data as JSON: /api/errors/6dbd035a94b73f6a. Report an issue: GitHub.