/**
* helm_history tool
*
* Get revision history of a Helm release.
* PRD #251: Helm Day-2 operations - investigation tools.
*/
import {
KubectlTool,
executeHelm,
successResult,
errorResult,
requireParam,
optionalParam,
withValidation,
} from './base';
export const helmHistory: KubectlTool = {
definition: {
name: 'helm_history',
type: 'agentic',
description:
'Get revision history of a Helm release. Shows all revisions with their status, chart version, and description. Use to identify rollback targets or understand upgrade history.',
inputSchema: {
type: 'object',
properties: {
releaseName: {
type: 'string',
description: 'Name of the Helm release to get history for',
},
namespace: {
type: 'string',
description: 'Kubernetes namespace where the release is installed (default: "default")',
},
max: {
type: 'number',
description: 'Maximum number of revisions to return (optional, returns all by default)',
},
},
required: ['releaseName'],
},
},
handler: withValidation(async (args) => {
const releaseName = requireParam<string>(args, 'releaseName', 'helm_history');
const namespace = optionalParam<string>(args, 'namespace', 'default');
const max = optionalParam<number | undefined>(args, 'max', undefined);
const cmdArgs = ['history', releaseName, '-o', 'json'];
if (max !== undefined && max > 0) {
cmdArgs.push('--max', String(max));
}
try {
const output = await executeHelm(cmdArgs, {
namespace,
timeout: 30000,
});
const revisionCount = output ? JSON.parse(output).length : 0;
return successResult(
output,
`Found ${revisionCount} revision(s) for release "${releaseName}"`
);
} catch (error) {
const message = error instanceof Error ? error.message : String(error);
return errorResult(message, `Failed to get history for release "${releaseName}": ${message}`);
}
}),
};
