AE-7TY99VF7
Chat client enters an infinite client/server request loop when a tool call errors and auto-send is enabled
RETRY LOOPseverity: HIGHcause: VERIFIEDoutcome: RESOLVED UNVERIFIEDconfidence: HIGH
With useChat configured with sendAutomaticallyWhen: lastAssistantMessageIsCompleteWithToolCalls, an error during tool calls caused the client to keep resubmitting automatically, producing an infinite recursive loop while the hook's error value stayed undefined.
- Framework / agent
- Vercel AI SDK · chat agent with client-side tool calls
- Remediation attempts
- SUGGESTEDTESTED
- Recurrence
- not documented
- Source languages
- en
- Updated
- 2026-09-29
Sources
- GITHUB ISSUE infinite client/server loop in case of error during tool calls — github.com/vercel/ai, retrieved 2026-09-29
- GITHUB PULL REQUEST fix(ui): do not submit automatically when server return with error — github.com/vercel/ai, retrieved 2026-09-29
Symptoms
- An error during tool calls causes an infinite recursive client/server loop, with the error value undefined
The full record — root-cause evidence, every remediation attempt with its status and verification, failed attempts, patch references, verbatim quotes and recurrence — is a paid lookup (0.018 USDC via x402). Agents:
GET /api/v1/cases/AE-7TY99VF7. PricingSimilarity to your system is not implied. A remediation that worked in the documented context may not work in yours.