Skip to content
CSA Loom — the Microsoft Fabric experience for Azure tenants where Fabric isn't yet available: lakehouses, warehouses, notebooks, semantic models, Activator rules, Data Agents, across Commercial, GCC, GCC-High, and DoD IL5

copilot-studio-action — parity gap (validator v2, 2026-05-26)

Loom URL: /items/copilot-studio-action/new Fabric reference: copilotstudio.microsoft.com — Actions tab (Add action wizard: Power Automate flow / Connector / Prebuilt / Custom Skill) Loom screenshot: temp/parity/copilot-studio-action-loom.png

Phase 4

Route Status Notes
GET /api/items/copilot-studio-action?envId=<env>&agentId=test 404 with body Resource not found for the segment 'msdyn_bot_actions' The Dataverse msdyn_copilots schema is not deployed in this env — exactly the gap the prompt warned about

The editor still renders the Copilot Studio not enabled MessageBar (the BFF maps 404 from missing schema to the same honest message). UI shows Action name · Type dropdown (Power Automate flow / Custom connector / Prebuilt) · Flow id · Connector id · Bind button.

Phase 3 — Fabric vs Loom

Copilot Studio element Loom present? Severity
Type dropdown (3 types) YES —
Power Automate flow picker (live list of flows in env) NO — free text Flow id MAJOR
Custom connector picker NO — free text Connector id MAJOR
Prebuilt action catalog (Excel · SharePoint · Outlook · Teams · etc.) NO MAJOR
Input/output parameter mapping (agent variable → flow input) NO BLOCKER
Description + when-to-use prompt that the LLM uses for tool selection NO BLOCKER — this is what makes generative orchestration work
Test action (provide sample inputs, fire the flow, see response) NO MAJOR
Honest 404/503 MessageBar YES —
Bound actions list YES (empty here) —

Functional

  • 404 from msdyn_bot_actions correctly surfaces as the "Copilot Studio not enabled" MessageBar
  • Bind button wired to POST (not exercised due to schema absence)

Grade — F

Two BLOCKERs (no parameter mapping, no description-for-tool-selection) and free-text Flow/Connector IDs make this unusable for real action authoring. The 404 → honest MessageBar is correct, but the underlying surface is far below parity. Grade F.