Add "API-Coverage"

API-Coverage.-.md

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+# API Coverage
+
+The VirtFusion MCP server currently covers **all 84 endpoints** defined in the VirtFusion Admin API OpenAPI specification. This page documents the coverage status and the tooling used to track it.
+
+## Coverage Summary
+
+| API Tag | Endpoints | MCP Module | Tools |
+|---|---|---|---|
+| General | 1 | `general.ts` | 1 |
+| Servers | 18 | `servers.ts` | 18 |
+| Servers/Power | 4 | `servers-power.ts` | 4 |
+| Servers/Network | 5 | `servers-network.ts` | 5 |
+| Servers/Network/Firewall | 4 | `servers-firewall.ts` | 4 |
+| Servers/Network/Traffic | 4 | `servers-traffic.ts` | 4 |
+| Hypervisors | 2 | `hypervisors.ts` | 2 |
+| Hypervisor Groups | 3 | `hypervisor-groups.ts` | 3 |
+| IP Blocks | 3 | `ip-blocks.ts` | 3 |
+| Packages | 2 | `packages.ts` | 2 |
+| Queue & Tasks | 1 | `queue.ts` | 1 |
+| Backups | 1 | `backups.ts` | 1 |
+| DNS | 1 | `dns.ts` | 1 |
+| Media | 2 | `media.ts` | 2 |
+| SSH Keys | 4 | `ssh-keys.ts` | 4 |
+| Users / External Rel ID | 7 | `users.ts` | 7 |
+| Self Service / External Relational ID | 19 | `self-service.ts` | 19 |
+| **Total** | **84** | **17 modules** | **84** |
+
+## Endpoint Manifest
+
+The file `endpoint-manifest.json` in the repository root contains a machine-readable list of all 84 endpoints extracted from `openapi.yaml`. Each entry includes:
+
+```json
+{
+  "method": "POST",
+  "path": "/servers/{serverId}/build",
+  "summary": "Build a server",
+  "tag": "Servers"
+}
+```
+
+## Drift Detection
+
+Two mechanisms keep the MCP server in sync with the VirtFusion API:
+
+### Manual Check
+
+```bash
+npm run check-endpoint-drift
+```
+
+This script:
+1. Parses the current `openapi.yaml` to extract all endpoints
+2. Loads `endpoint-manifest.json` as the known baseline
+3. Compares the two sets by `METHOD path` key
+4. Reports any new or removed endpoints
+5. Exits with code 0 if no drift, code 1 if drift detected
+
+### Automated CI Check
+
+The `endpoint-sync` Gitea Actions workflow runs:
+- **Weekly** on a cron schedule
+- **On any push** that modifies `openapi.yaml`
+
+If drift is detected, it automatically creates a Gitea issue with the details of new/removed endpoints.
+
+## Updating When VirtFusion Adds New Endpoints
+
+1. Download the updated `openapi.yaml` from VirtFusion documentation
+2. Replace the existing `openapi.yaml` in the repo root
+3. Run drift detection to see what changed:
+   ```bash
+   npm run check-endpoint-drift
+   ```
+4. Implement new tools in the appropriate `src/tools/*.ts` module (see [[Contributing]])
+5. Update the manifest:
+   ```bash
+   npm run extract-endpoints > endpoint-manifest.json
+   ```
+6. Update the tool count in `README.md`
+7. Commit all changes together
+
+## OpenAPI Specification
+
+The full VirtFusion Admin API specification is stored at `openapi.yaml` in the repository root. This file is the source of truth for endpoint extraction. The extraction script (`scripts/extract-endpoints.ts`) parses it using the `yaml` package and outputs sorted JSON.
+
+## Not Yet Implemented
+
+As of v1.0.1, there are **no unimplemented endpoints** -- all 84 endpoints in the OpenAPI spec have corresponding MCP tools. Future VirtFusion API releases may introduce new endpoints, which will be caught by the drift detection system.
+
+For a detailed per-tool reference, see [[Tool-Reference]].
+
+---