{"record":{"id":"a96e5742f6d1459f","repo":"googleapis/mcp-toolbox","slug":"tool-type-q-already-registered-a96e57","errorCode":null,"errorMessage":"tool type %q already registered","messagePattern":"tool type %q already registered","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/tools/cloudstorage/cloudstoragelistobjects/cloudstoragelistobjects.go","lineNumber":46,"sourceCode":")\n\nconst resourceType string = \"cloud-storage-list-objects\"\n\n// maxResultsLimit matches the GCS per-page cap. Values above this are rejected\n// in Invoke so callers see an explicit error instead of a silently-clamped page.\nconst maxResultsLimit = 1000\n\nconst (\n\tbucketKey     = \"bucket\"\n\tprefixKey     = \"prefix\"\n\tdelimiterKey  = \"delimiter\"\n\tmaxResultsKey = \"max_results\"\n\tpageTokenKey  = \"page_token\"\n)\n\nfunc init() {\n\tif !tools.Register(resourceType, newConfig) {\n\t\tpanic(fmt.Sprintf(\"tool type %q already registered\", resourceType))\n\t}\n}\n\nfunc newConfig(ctx context.Context, name string, decoder *yaml.Decoder) (tools.ToolConfig, error) {\n\tactual := Config{ConfigBase: tools.ConfigBase{Name: name}}\n\tif err := decoder.DecodeContext(ctx, &actual); err != nil {\n\t\treturn nil, err\n\t}\n\treturn actual, nil\n}\n\ntype compatibleSource interface {\n\tListObjects(ctx context.Context, bucket, prefix, delimiter string, maxResults int, pageToken string) (map[string]any, error)\n}\n\ntype Config struct {\n\ttools.ConfigBase `yaml:\",inline\"`\n\tType             string                 `yaml:\"type\" validate:\"required\"`","sourceCodeStart":28,"sourceCodeEnd":64,"githubUrl":"https://github.com/googleapis/mcp-toolbox/blob/8cc6e09de2ad7b8bffc77751799585a1401a48eb/internal/tools/cloudstorage/cloudstoragelistobjects/cloudstoragelistobjects.go#L28-L64","documentation":"The package's init() registers the 'cloud-storage-list-objects' tool type in the global registry and panics if tools.Register returns false, meaning the type string was already claimed. This is a duplicate-registration guard for programming errors (e.g. a vendored or duplicated package copy linked into the binary), not a user config issue.","triggerScenarios":"Thrown at internal/tools/cloudstorage/cloudstoragelistobjects/cloudstoragelistobjects.go:46 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Ensure the package is not imported twice under different paths (e.g. vendored and module copies)","Rename the conflicting resourceType constant if two distinct tools share it","Clean go.mod/go.sum and rebuild to eliminate stale duplicate dependencies"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"8cc6e09de2ad7b8bffc77751799585a1401a48eb","analyzedAt":"2026-09-05T01:10:36.887Z","contentChangedAt":"2026-09-05T01:10:36.887Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}