From 54654d279403018fdb0e1c6c41519fa8714f3e75 Mon Sep 17 00:00:00 2001 From: "Darren.Zeng" Date: Wed, 18 Mar 2026 21:55:01 +0800 Subject: [PATCH] fix(anthropic): skip tool calls with empty names to prevent API errors (#1739) When building parameters for Anthropic API calls, tool calls with empty names would cause 400 Bad Request errors with the message: 'tool_use.name: String should have at least 1 character' This fix adds a check to skip tool calls that have empty names, preventing the API error and allowing the conversation to continue normally. Fixes #1658 --- pkg/providers/anthropic/provider.go | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/pkg/providers/anthropic/provider.go b/pkg/providers/anthropic/provider.go index 242ded175..d4ceaab2c 100644 --- a/pkg/providers/anthropic/provider.go +++ b/pkg/providers/anthropic/provider.go @@ -180,6 +180,10 @@ func buildParams( blocks = append(blocks, anthropic.NewTextBlock(msg.Content)) } for _, tc := range msg.ToolCalls { + // Skip tool calls with empty names to avoid API errors + if tc.Name == "" { + continue + } args := tc.Arguments if args == nil && tc.Function != nil && tc.Function.Arguments != "" { if err := json.Unmarshal([]byte(tc.Function.Arguments), &args); err != nil {