Hermes OpenTelemetry plugin

Brian Caffey has released Hermes OTel, a plugin that turns Hermes agent activity into OpenTelemetry data that can be sent to standard observability backends. (github.com) The GitHub repository says the plugin exports LLM tool calls, model invocations, and API requests as OpenTelemetry spans, and Caffey’s GitHub activity shows a 0.1.0 release dated April 19, 2026. (github.com, github.com) OpenTelemetry is the open-source format many software teams use to describe what a system did, how often it did it, and what went wrong, using traces, metrics, and logs. The OpenTelemetry project says the standard is vendor-neutral and supported by more than 90 observability vendors. (opentelemetry.io) For agent builders, that means an assistant’s tool run, model call, or failed request can be recorded in the same format as the rest of an application. OpenTelemetry’s own AI agent guidance says teams need that telemetry to diagnose failures, improve efficiency, and avoid vendor- or framework-specific data formats. (opentelemetry.io) The plumbing here is OpenTelemetry Protocol, or OTLP, the wire format used to ship telemetry from software to a collector or backend. OpenTelemetry’s agent deployment docs describe that pattern as sending data from an SDK to a collector, which can then forward it to one or more backends. (opentelemetry.io) Hermes OTel is built around that model. The repository says it can send Hermes telemetry to “any OTLP-compatible backend,” and the release notes on Caffey’s GitHub profile mention batching for multiple OpenTelemetry backends. (github.com, github.com) That fits a broader push to make agent observability less tied to one dashboard vendor. OpenTelemetry’s semantic-conventions repository defines shared attribute names for telemetry, and Microsoft’s Agent Framework documentation says its agents emit traces, logs, and metrics according to OpenTelemetry GenAI semantic conventions. (github.com, learn.microsoft.com) Hermes itself is a fast-growing agent project. A community-maintained Hermes ecosystem directory says Hermes Agent launched in February 2026 and has already produced dozens of related plugins, templates, and forks. (github.com) The immediate test for Hermes OTel is not whether it can emit a trace, but whether teams adopt one shared telemetry format for agents across tools, models, and dashboards. Caffey’s plugin is one more sign that OpenTelemetry is becoming the default wiring for that stack. (github.com, opentelemetry.io, opentelemetry.io)