W3C Trace Context
Also written traceparent
A W3C Recommendation (November 2021) that standardises the HTTP headers carrying distributed-tracing context between services: traceparent gives a request's position in its trace graph in a portable, fixed-length format, and tracestate adds vendor-specific name/value pairs. For agents it is how a prompt, the model call, the tool calls and the downstream API requests can be joined into one trace across processes and vendors.
See also context tree · patient zero · agent identity
Sources
Related terms
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Context tree
Defence & response
In AI incident forensics, a reconstruction of everything that entered a model's context during a session and where each piece came from — prompts, files…
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Patient zero
Defence & response
The first point at which malicious content entered an AI system in an incident — the poisoned web page, file, tool description or message an agent read…
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Agent identity
Agents & architecture
The identity an AI agent's actions are attributed to and authorised under. Most agents today act as the developer who launched them, or with a shared key…
Frameworks & standards
What auditors, buyers and regulators reference. See the compliance crosswalk for the control-by-control mapping.