googleapis/mcp-toolbox · error

error during invocation: %w

Error message

error during invocation: %w

What it means

Error "error during invocation: %w" thrown in googleapis/mcp-toolbox.

Source

Thrown at internal/server/api.go:191

			return
		}
	}

	err = tool.ValidateSource(src)
	if err != nil {
		s.logger.DebugContext(ctx, err.Error())
		_ = render.Render(w, r, newErrResponse(err, http.StatusNotFound))
		return
	}

	// Extract OAuth access token from the "Authorization" header (currently for
	// BigQuery end-user credentials usage only)
	accessToken := tools.AccessToken(r.Header.Get("Authorization"))

	// Check if this specific tool requires the standard authorization header
	clientAuth, err := tool.RequiresClientAuthorization(src)
	if err != nil {
		errMsg := fmt.Errorf("error during invocation: %w", err)
		s.logger.DebugContext(ctx, errMsg.Error())
		_ = render.Render(w, r, newErrResponse(errMsg, http.StatusNotFound))
		return
	}
	if clientAuth {
		if accessToken == "" {
			err = fmt.Errorf("tool requires client authorization but access token is missing from the request header")
			s.logger.DebugContext(ctx, err.Error())
			_ = render.Render(w, r, newErrResponse(err, http.StatusUnauthorized))
			return
		}
	}

	// Tool authentication
	// claimsFromAuth maps the name of the authservice to the claims retrieved from it.
	claimsFromAuth := make(map[string]map[string]any)
	for _, aS := range s.PrimitiveMgr.AuthServices() {
		var claims map[string]any

View on GitHub (pinned to 8cc6e09de2)

When it happens

Trigger: Thrown at internal/server/api.go:191 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/16ddc5c748bb9512. Report an issue: GitHub.