Anthropic agents loop, stall or fail midway

LLM apps2 posts from 2 people2d active+11 post in the last 7 days, 0 the 7 days before (steady)Unverified

Posts per day2 posts, Sep 6 to Sep 25

The posts behind it

2, newest first

Post	Where	Date
ChatOpenAI tool calls fail with 400 for Bedrock GPT-6 model IDs (`us.openai.gpt-6-sol`, `openai.gpt-6-astra`) because Responses routing only matches names starting with `gpt-6`...Mantle endpoint. Otherwise, could you assign me? The branch is ready. Tests, lint and workarounds Workarounds today: `use_responses_api=True` works for all three models. `reasoning_effort="none"` works for Sol and Luna only. Astra rejects it, so Astra cannot call tools through...langchain-ai/langchainkimnamu	langchain-ai/langchainkimnamu1 replies	Sep 24yesterday
AI Agent (V1): a schema-invalid tool call from the model terminates the whole execution instead of being returned as a recoverable error### Bug Description A model-generated tool call that fails the tool's Zod schema validation terminates the entire AI Agent execution. The end user receives nothing. With `@n8n/n8n-nodes-langchain.agent` typeVersion 1.9 (AgentV1), when the model emits a `tool_use` block whose...n8n-io/n8nHanumanTFM	n8n-io/n8nHanumanTFM7 replies	Sep 62 weeks ago

Companies and products named

Company or product	Posts naming it
Anthropic	2
LangChain	2
Codex	1
Perplexity	1
DeepSeek	1
Ollama	1

About this problem

Evidence

2 posts from 2 people in 2 places, about 1 a week over 19 days. Mostly on langchain-ai/langchain, n8n-io/n8n. Tools named alongside: LangChain, Codex, Perplexity, DeepSeek.

Frustration Frustration 0 of 3· Seen on GitHub issues

How it was grouped

Posts that state a pain and match the "agent-reliability" rule about Anthropic. First post Sep 6, 2026, latest Sep 24, 2026. Unverified: fewer than 3 posts, or one person or place only. Method

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