---
name: fpf-skill:telemetry-log-work-span
description: Generates an FPF-compliant OpenTelemetry Span mapped to U.Work.
version: 0.1.0
allowed_tools: []
---
# telemetry/log-work-span Kernel
## Context
This skill implements **FPF Pattern A.15.1 (U.Work)** by mapping execution units to OpenTelemetry Spans. It ensures "Lawful Telemetry" (G.12) by strictly adhering to the 4D Anchor schema.
## Instructions
You must generate a valid `U.Work` record formatted as an OpenTelemetry Span structure.
### 1. Mandatory 4D Anchors
You must include the following attributes in the span. IF a value is missing, you must either derive it or explicitly label it as `UNKNOWN` (do not omit).
| FPF Anchor | OTel Attribute | Value Requirement |
| :--- | :--- | :--- |
| **Spec** | `fpf.spec_ref` | URI of the Method being executed (e.g., `method:PlanTask@v1`). |
| **Performer** | `fpf.performer_ref` | URI of the Role/Agent (e.g., `role:Assistant@run-1`). |
| **Context** | `fpf.context_ref` | URI of the Bounded Context (e.g., `ctx:AgentFS-Experiment-C1`). |
| **System** | `fpf.system_ref` | Identity of the runtime system (e.g., `sys:MacBookPro-M3`). |
| **Pins** | `fpf.edition_pins` | JSON string of version pins. |
### 2. Metric Telemetry (G.11)
If the work involves derived metrics, include them as attributes:
- `fpf.outcome.class`: One of `Success`, `Failure`, `Aborted`.
- `fpf.outcome.rubric_score`: (Optional) Integer 1-5.
### 3. Output Format
Return the JSON representation of the Span, including `name`, `start_time`, `end_time`, and `attributes`.
