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Registers hook groups across LLM, tools, retrieval, and memory lifecycle points. Hook activity logs to stderr with a [hooks] prefix so you can see when each hook fires without mixing into the assistant reply. Source: examples/agent_with_hooks/

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What it demonstrates

The sample uses WithHooks with named hook groups. See Hooks for every hook point and RunMeta fields.

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Run

From examples/:
Default: two-run demo (store memories + prefetch retrieval + tools, then recall).
Watch stderr for [hooks] lines as each hook fires.

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Expected output

stdout (assistant reply):
stderr ([hooks] lines, interleaved):
Sending "My email is [email protected]..." triggers PII redaction and you’ll see redacted 1 PII items in the hook output.

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Temporal

Hooks are Go functions — they run in the process that executes activities (the worker). Register the same hook groups on both the agent starter and the worker via HookOptions() (or equivalent WithHooks calls). Group names are fingerprinted for drift detection; hook logic consistency is your responsibility.

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Learn more

Hooks

Hook points and RunMeta

Observability

OTLP alongside hooks