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Dev.to
7/26/2026
The original title is "Building an Autonomy Error Budget Gateway with SigNoz and OpenTelemetry"

The original title is "Building an Autonomy Error Budget Gateway with SigNoz and OpenTelemetry"

Original: Building an Autonomy Error Budget Gateway with SigNoz and OpenTelemetry

Short summary

The author built LEASH, a gateway that dynamically restricts an AI agent's permissions based on its recent tool-call failure rate, applying SRE error-budget concepts to autonomous agents. The system uses SigNoz and OpenTelemetry to monitor agent behavior via traces and metrics, automatically demoting the agent from full write access to read-only when failures exceed a threshold within a 5-minute window. The article details the four-service architecture, alert webhook configuration, and the critical importance of emitting policy decisions as proper spans for debugging.

  • LEASH gateway dynamically tiers AI agent permissions (T3 full access to T1 read-only) based on real-time failure telemetry from SigNoz
  • Architecture splits agent-runner, leash-broker, and downstream tools as separate processes, all instrumented with OpenTelemetry SDK
  • Key lesson: emit policy decisions as spans with rich attributes so traces become self-documenting evidence for why calls were allowed or denied

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