{"record":{"id":"051c25d78c2c8a8b","repo":"JuliusBrussee/caveman","slug":"content-or-tool-calls-required","errorCode":null,"errorMessage":"content or tool_calls required","messagePattern":"content or tool_calls required","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cacheengine/cachebench/corpus.go","lineNumber":356,"sourceCode":"\t\t}\n\t}\n\treturn CorpusRow{\n\t\tRowIndex: index, SessionID: wire.SessionID, Model: wire.Model, Input: messages,\n\t\tOutputLength: wire.OutputLength, PreGap: wire.PreGap,\n\t}, nil\n}\n\nfunc validateCorpusMessage(message CorpusMessage, limits CorpusLimits) error {\n\tswitch message.Role {\n\tcase \"system\", \"developer\", \"user\", \"assistant\", \"tool\":\n\tdefault:\n\t\treturn fmt.Errorf(\"unsupported role %q\", message.Role)\n\t}\n\tif !validBoundedText(message.ToolCallID, 2048, true) || !validBoundedText(message.Name, 512, true) {\n\t\treturn errors.New(\"invalid message identity\")\n\t}\n\tif len(message.Content) == 0 && len(message.ToolCalls) == 0 {\n\t\treturn errors.New(\"content or tool_calls required\")\n\t}\n\tif len(message.Content) > limits.MaxMessageBytes || (len(message.Content) > 0 && !json.Valid(message.Content)) {\n\t\treturn errors.New(\"content invalid or exceeds limit\")\n\t}\n\tmessageBytes := len(message.Content) + len(message.Role) + len(message.ToolCallID) + len(message.Name)\n\tif len(message.Content) > 0 {\n\t\tvar content any\n\t\tif err := json.Unmarshal(message.Content, &content); err != nil {\n\t\t\treturn errors.New(\"content must decode\")\n\t\t}\n\t\tif content != nil {\n\t\t\tif _, ok := content.(string); !ok {\n\t\t\t\treturn errors.New(\"content must be string or null\")\n\t\t\t}\n\t\t}\n\t}\n\tfor _, call := range message.ToolCalls {\n\t\tif call.Type != \"function\" || !validBoundedText(call.ID, 2048, false) || !validBoundedText(call.Function.Name, 512, false) || !validUniqueJSONObject([]byte(call.Function.Arguments)) {","sourceCodeStart":338,"sourceCodeEnd":374,"githubUrl":"https://github.com/JuliusBrussee/caveman/blob/27d5a3981a347890211bb1bf2439e5c821a63bc9/cacheengine/cachebench/corpus.go#L338-L374","documentation":"Error \"content or tool_calls required\" thrown in JuliusBrussee/caveman.","triggerScenarios":"Thrown at cacheengine/cachebench/corpus.go:356 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Provide content or tool_calls on the message."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"27d5a3981a347890211bb1bf2439e5c821a63bc9","analyzedAt":"2026-08-15T09:26:11.751Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}