middleware-pipeline

---

name: middleware-pipeline description: Use composable middleware behaviors for provider/tool execution: retry, caching, timeout, telemetry, and budget guards. allowed-tools: Read, Bash(node .harness/scripts/middleware-demo.mjs:*) suggested-turns: 5

Middleware Pipeline

Provides five composable behaviors via src/core/middleware/pipeline.mjs:

• withRetry()
• withCaching()
• withTimeout()
• withTelemetry()
• withBudget()

Example

const run = composeMiddleware(baseRun, [
  withTelemetry({ sink }),
  withBudget({ maxInputTokens: 100000 }),
  withTimeout({ ms: 30000 }),
  withRetry({ attempts: 2 }),
  withCaching(),
]);

Smoke test

node .harness/scripts/middleware-demo.mjs