TenantAtlas/specs/061-provider-foundation/contracts/graph-contracts.md

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# Contracts: Graph Contract Registry Updates (Provider Foundation v1)
**Branch**: `061-provider-foundation`
**Date**: 2026-01-24
## Purpose
Provider foundation operations must not introduce ad-hoc Microsoft Graph endpoints. Any new Graph resources required by provider modules should be added to the central registry (`config/graph_contracts.php`) and consumed via `GraphClientInterface`.
## Required additions (v1)
### 1) Connection health check
**Operation**: Provider connection health check (“ping”)
**Graph call**: `GET /organization` (basic org metadata)
**Registry note**: Ensure the org endpoint is modeled/approved in the contract registry (either as a first-class type or as an explicitly allowed internal call within the Graph client).
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### 2) Compliance snapshot (counts)
**Operation**: Compliance snapshot (device compliance state counts)
**Graph calls** (one of the contract-approved patterns):
- Option A: List managed devices with a minimal select and compute counts client-side.
- Resource: `deviceManagement/managedDevices`
- Required fields: `id`, `complianceState`
- Option B: Use Graph count endpoints / filtered counts if supported reliably.
- Resource: `deviceManagement/managedDevices/$count` (with filters)
**Registry note**: Add a contract entry for managed devices (and any count strategy used) with allowed selects/filters to prevent accidental over-fetching.
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## Existing registry reuse
Provider inventory collection should prefer existing policy-type contracts already present in `config/graph_contracts.php` (e.g., Intune policy types and directory group listing), rather than introducing new “quick endpoints”.