konsistent is now open source.
konsistent is a CLI linter for TypeScript codebases that enforces structural conventions, giving agents and humans the consistent context they need to implement features correctly. Deterministic, fast, and covers structural patterns that TypeScript and ESLint don't model.
Configure conventions in a project-level konsistent.json file for concerns like:
Do all files matching pattern X export functions Y and Z?
Does every folder that has file X also have file Y?
Does every class exported from files matching pattern X implement type Y?
konsistent is used in AI SDK and Chat SDK to enforce structural code conventions.
▲ pnpm konsistent
packages/harness-demo-code/src/index.ts - error Missing export type "DemoCodeHarnessSettings" from "./demo-code-harness" [harness-package-must-export-harness-creator-and-settings] - error Missing export constant "demoCode" [harness-package-must-export-harness-creator-and-settings]packages/harness-demo-code/src/demo-code-harness.ts - error Missing required file: demo-code-auth.ts [harness-file-must-export-harness-creator-and-settings-type] - error Missing export type "DemoCodeHarnessSettings" [harness-file-must-export-harness-creator-and-settings-type] - error Missing import type "HarnessV1" [harness-file-must-export-harness-creator-and-settings-type] - error Missing local type declaration "DemoCodeBridgeCoords" [harness-file-with-bridge-must-declare-bridge-contracts] - error Missing local constant declaration "demoCodeBridgeCoordsSchema" [harness-file-with-bridge-must-declare-bridge-contracts] 12 error Function "createDemoCode" must return value of type "HarnessV1" [harness-file-must-export-harness-creator-and-settings-type]packages/harness-demo-code/src/demo-code-bridge-protocol.ts - error Missing export type "BridgeReady" [harness-bridge-protocol-file-must-export-relevant-symbols] - error Missing export constant "bridgeReadySchema" [harness-bridge-protocol-file-must-export-relevant-symbols]packages/harness-demo-code/src/bridge/index.ts - error Missing local function declaration "runTurn" [harness-bridge-must-declare-and-use-relevant-symbols] - error Missing import "runBridge" [harness-bridge-must-declare-and-use-relevant-symbols] - error Missing import type "StartMessage" [harness-bridge-must-declare-and-use-relevant-symbols] - error Missing import type "BridgeEvent" [harness-bridge-must-declare-and-use-relevant-symbols] - error Missing import type "BridgeTurn" [harness-bridge-must-declare-and-use-relevant-symbols]Checked 340 files in 212ms. Found 15 errors.konsistent CLI example output for a "Demo Code" harness adapter in AI SDK
Use the konsistent skill to help your agent create a konsistent.json:
npx skills add vercel-labs/konsistent --skill konsistent-configGet started with konsistent
Add the package to your project, then use the skill with your agent so it can help you declare the conventions.
Get started