Invalid Tool Input Schema: Unsupported JSON Schema Validation Construct

Bug Description

I get the following error even after restarting my pc and starting a new conversation session.

API Error: 400 {"type":"error","error":{"type":"invalid_reque
st_error","message":"tools.61.custom.input_schema:
input_schema does not support oneOf, allOf, or anyOf at the
top level"}}

Environment Info

• Platform: win32
• Terminal: vscode
• Version: 1.0.81
• Feedback ID: b6dae9f7-2bdc-4fd6-8def-f46db5db667b

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"tools.61.custom.input_schema: input_schema does not support oneOf, allOf, or anyOf at the top level\"}}\n    at G6.generate (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:936:2414)\n    at rP.makeStatusError (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:953:2101)\n    at rP.makeRequest (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:953:5315)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async iG1.showErrors (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1855:24691)\n    at async iG1 (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1855:13705)\n    at async cPB (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1855:24542)\n    at async file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1855:19524\n    at async vN0 (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1855:5164)\n    at async Y01 (file:///C:/Users/bnich/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1855:19494)","timestamp":"2025-08-15T23:06:26.685Z"}]