workspaces-euc-mcp-server 0.1.1

MCP server for administering the Amazon WorkSpaces family of End User Computing services (Personal, Pools, Applications, Secure Browser, Core).

WorkSpaces EUC MCP Server

An MCP server that gives administrators AI-assisted inventory, troubleshooting, and cost/utilization optimization across the Amazon WorkSpaces End User Computing (EUC) portfolio:

• Amazon WorkSpaces Personal — persistent virtual desktops
• Amazon WorkSpaces Pools — non-persistent pooled desktops
• Amazon WorkSpaces Applications — application streaming (formerly AppStream 2.0)
• Amazon WorkSpaces Secure Browser — managed browser (formerly WorkSpaces Web)
• Amazon WorkSpaces Core — partner / bring-your-own VDI integration, incl. Core Managed Instances (the workspaces-instances API). Plain Core partner desktops appear via the standard WorkSpaces API and are counted under WorkSpaces Personal.

Legacy names are accepted. Ask using former names and the tools still route correctly, while output always uses the current name: AppStream / AppStream 2.0 → Amazon WorkSpaces Applications (same service, the appstream API), and WorkSpaces Web → Amazon WorkSpaces Secure Browser.

Built for the administrator persona, following the official AWS MCP design conventions (Python, FastMCP, Pydantic, boto3). It is read-only by default and security-first: write/lifecycle tools are opt-in, gated behind explicit flags and matching IAM permissions.

Why this exists

Generic AWS MCP servers can already call EUC APIs one-to-one. This server is different: its tools are cross-service workflows that synthesize a result (an inventory rollup, a connectivity diagnosis, a right-sizing recommendation) instead of returning raw API output. See DESIGN.md for the full tool inventory and roadmap.

Status

Phase 1 (in progress) — read-only inventory and troubleshooting tools:

Tool	Description
get_euc_inventory_summary	Cross-service inventory for a region (incl. WorkSpaces Core Managed Instances): per-service counts by state, grand total, and any per-service collection errors.
diagnose_workspace_connectivity	Why a WorkSpaces Personal desktop may be unreachable — correlates WorkSpace state, connection status, directory health, and CloudWatch connection metrics into a ranked diagnosis.
diagnose_application_fleet	A WorkSpaces Applications fleet's health and capacity — fleet state, fleet errors, compute capacity, auto-scaling activity, and insufficient-capacity errors.
diagnose_pool	A WorkSpaces Pool's health — state, pool errors, user-session capacity, backing directory health, and session-utilization.
get_application_fleet_usage	A WorkSpaces Applications fleet's usage history — AWS/AppStream capacity/utilization time-series over a window, with a plain-language summary (e.g. idle running capacity) (Tier 0).
check_directory_health	Registration state and AWS Directory Service stage for one or all WorkSpaces-registered directories.
analyze_workspace_utilization	Classifies WorkSpaces Personal desktops as unused / idle / active from the UserConnected metric (Tier 1).
recommend_running_mode	Flags AlwaysOn desktops with low usage as AutoStop candidates, with an estimated $/mo saving where the bundle price can be matched (Tier 1).
get_workspace_performance	Native CPU / memory / disk / GPU / latency / uptime metrics per desktop from AWS/WorkSpaces — no CloudWatch agent (Tier 0).
get_workspace_connection_history	A desktop's connection/session history (UserConnected + connection attempts/failures) over a window, with a summary (Tier 0).
get_pool_session_history	A WorkSpaces Pool's user-session history (active/available/utilization capacity time-series), flags idle pool capacity (Tier 0).
recommend_bundle_rightsizing	Suggests smaller/larger compute types from CPU & memory headroom (general families; graphics excluded) (Tier 0).
get_euc_cost_summary	EUC spend by service over a window via Cost Explorer, account-wide (Tier 1).
generate_inventory_report	Detailed per-resource inventory (desktops with assigned user / computer name / IP, pools, fleets, stacks + their associated fleets, portals) with key attributes (Tier 0).
audit_security_posture	Cross-service: flags unencrypted WorkSpace volumes, directories without IP access control groups, and Secure Browser portals / Applications stacks that allow data egress (clipboard/download/print) (Tier 0).
get_secure_browser_portal_details	Resolves a Secure Browser portal's user settings (clipboard/print/download controls + timeouts), network, and attached policies (Tier 0).
get_secure_browser_portal_usage	A Secure Browser portal's AWS/WorkSpacesWeb session metrics over a window (empty until the portal has sessions; Session Logger gives detail) (Tier 0).
list_unused_resources	Unused WorkSpaces desktops and stopped/zero-capacity fleets worth reclaiming (Tier 0).

Cost/utilization tools need the Tier 1 IAM policy (iam/tier1-cost.json); everything else above is Tier 0 (iam/tier0-diagnostics.json).

Write tools — opt-in, guarded (Phase 2, Tier 2)

Registered only when launched with --enable-writes, and need the Tier 2 policy (iam/tier2-lifecycle.json). Every mutation is dry-run by default (returns a plan, changes nothing) unless called with confirm=true, and confirmed bulk actions are refused above --max-bulk-targets.

Tool	Description
start_workspaces / stop_workspaces / reboot_workspaces	Power operations on WorkSpaces Personal desktops (batch, capped).
modify_workspace_running_mode	Switch a desktop between AUTO_STOP and ALWAYS_ON.
start_workspaces_pool / stop_workspaces_pool	Power a WorkSpaces Pool on/off.
update_workspaces_pool_capacity	Set a Pool's desired user-session capacity.
start_application_fleet / stop_application_fleet	Power a WorkSpaces Applications fleet on/off.
update_application_fleet_capacity	Set a fleet's desired instance capacity.

Destructive tools — double opt-in, typed acknowledgement (Phase 3, Tier 3)

Registered only with both --enable-writes and --enable-destructive, and need the Tier 3 policy (iam/tier3-destructive.json). On top of the dry-run default and blast-radius cap, each execution requires an exact typed acknowledgement.

Tool	Description	Acknowledge
terminate_workspaces	Permanently delete desktops (irreversible).	"TERMINATE"
rebuild_workspaces	Reset root volume to bundle; user volume from last snapshot.	"REBUILD"
restore_workspace	Restore a desktop from its last snapshot.	"RESTORE"

Example: terminate_workspaces(workspace_ids=[...], confirm=true, acknowledge="TERMINATE"). Without the exact phrase the call is refused and nothing changes. See DESIGN.md.

Requirements

• Python 3.11+
• AWS credentials available via the standard chain (AWS_PROFILE, AWS_REGION, SSO, or an assumed role).
• An IAM identity with the Tier 0 policy in iam/tier0-diagnostics.json.

Credentials & data handling

This server is built to be redistributed and run by many parties, so it never stores or embeds any user-specific data:

• Credentials come only from the standard AWS chain at runtime — they are never read into, logged by, or persisted by the server.
• No state on disk. There is no config/cache/state file; boto3 clients live in memory only.
• No account-specific data in the code — no account IDs, ARNs, profile names, or regions are hardcoded. Provide them at runtime via flags/env. Documentation uses placeholders only.

Bring your own credentials and region; the server holds nothing.

Install

With uv (recommended once published):

uvx workspaces-euc-mcp-server@latest

From source:

python -m venv .venv
# Windows: .venv\Scripts\Activate.ps1   |   macOS/Linux: source .venv/bin/activate
pip install -e ".[dev]"

Configure your MCP client

{
  "mcpServers": {
    "workspaces-euc": {
      "command": "uvx",
      "args": ["workspaces-euc-mcp-server@latest"],
      "env": {
        "AWS_PROFILE": "your-euc-admin-profile",
        "AWS_REGION": "us-east-1"
      }
    }
  }
}

Running from a source checkout instead of uvx:

{
  "mcpServers": {
    "workspaces-euc": {
      "command": "python",
      "args": ["-m", "workspaces_euc_mcp_server.server", "--region", "us-east-1"],
      "env": { "AWS_PROFILE": "your-euc-admin-profile" }
    }
  }
}

Command-line flags

Flag	Default	Purpose
--region	session/profile region	Target AWS region.
--profile	default chain	AWS named profile.
--assume-role-arn	none	Cross-account role to assume (multi-account / MSP).
--external-id	none	ExternalId for the assumed role, if required.
--enable-writes	off	Register Phase 2 lifecycle (write) tools.
--enable-destructive	off	Allow terminate/rebuild/restore (requires --enable-writes).
--max-bulk-targets	25	Blast-radius cap for bulk mutations (Phase 2).

The server starts read-only; mutating tools require both the launch flag and the matching IAM tier.

Multi-account / MSP

To manage a different account from the one your credentials live in, launch with --assume-role-arn (and --external-id if the role requires it):

workspaces-euc-mcp-server --region ap-southeast-1 \
  --assume-role-arn arn:aws:iam::222222222222:role/EucReadOnly --external-id my-ext-id

The server transparently sts:AssumeRoles into the target account and auto-refreshes the credentials. Requirements:

• The launching identity needs sts:AssumeRole on the target role.
• The target role needs the matching tier policy from iam/ (Tier 0 for read-only).
• To manage many accounts, run one instance per target role (or point separate MCP-client entries at different --assume-role-arn values).

IAM

Attach iam/tier0-diagnostics.json to the identity the server runs as (or to the role you assume with --assume-role-arn). Tiers are additive and documented in iam/README.md. All actions are captured by AWS CloudTrail.

Example admin questions

Once the server is connected to an MCP client, you can ask in natural language and the client will pick the right tool. A few examples:

You ask…	Tool the client uses
"What WorkSpaces resources do I have in us-east-1?"	get_euc_inventory_summary
"User X can't connect to ws-abc123 — why?"	diagnose_workspace_connectivity
"Is the marketing AppStream fleet healthy / out of capacity?"	diagnose_application_fleet
"Which desktops are idle or unused this fortnight?"	analyze_workspace_utilization / list_unused_resources
"Where can I cut WorkSpaces cost?"	recommend_running_mode + get_euc_cost_summary
"Any desktops without volume encryption or IP restrictions?"	audit_security_posture
"Switch ws-abc123 to AutoStop."	modify_workspace_running_mode (dry-run first)
"Reboot these three stuck desktops."	reboot_workspaces (dry-run, then confirm=true)

Write/destructive tools are off unless enabled. Mutations show a dry-run plan first; to execute you pass confirm=true (and, for destructive ops, the exact acknowledge phrase). For example, a full destructive run looks like:

terminate_workspaces(workspace_ids=["ws-abc123"], confirm=true, acknowledge="TERMINATE")

Launch with writes/destructive enabled:

workspaces-euc-mcp-server --enable-writes                      # Tier 2 power/capacity tools
workspaces-euc-mcp-server --enable-writes --enable-destructive # + Tier 3 terminate/rebuild/restore

Development

pip install -e ".[dev]"
pytest            # run tests (deterministic, no AWS account needed)
ruff check .      # lint
ruff format .     # format
pyright           # type check

License

Apache-2.0. See LICENSE.