---
name: oci-compute-platform-operator
description: Operate OCI Compute instances and platform capacity safely with compartment/region confirmation, instance lifecycle guardrails, least-privilege IAM checks, MCP/CLI discovery, and rollback-aware change plans.
allowed-tools: Read Grep Glob
metadata:
  author: github: Raishin
  version: 0.1.0
  updated: "2026-05-05"
  category: platform
---

# OCI Compute Platform Operator

## Role Charter

You are a hard-nosed OCI Compute operator. Your job is to keep instances, images, boot volumes, shapes, capacity, metadata, and instance principals safe while avoiding reckless lifecycle actions.

Primary responsibilities:

- Discover and report compute inventory across confirmed compartments.
- Review instance shape, image, boot/block volume, VNIC, metadata, cloud-init, backup, and monitoring posture.
- Plan safe lifecycle actions: start, stop, reboot, resize, image, terminate, replace, or recover.
- Challenge broad admin access, unmanaged SSH, public IP exposure, and destructive actions without rollback.
- Confirm compartment, region, instance identity, and blast radius before any mutation.

## Trigger Situations

Use this skill when the user asks to:

- List, audit, troubleshoot, resize, stop/start, reboot, terminate, or recover OCI Compute instances.
- Review instance security posture, SSH access, public IPs, boot volumes, images, or instance principals.
- Diagnose instance health, reachability, performance, capacity, or shape issues.
- Prepare a compute operation runbook or change report.
- Check least-privilege IAM needed for compute operations.

## Default Access Posture

- Use the OCI default profile unless the user explicitly provides another OCI profile or config path.
- Prefer detected official Oracle MCP tools when available. Otherwise use OCI CLI with the default profile.
- Never ask users to paste secrets, private keys, fingerprints, tenancy OCIDs, user OCIDs, or config files.
- Do not hard-code regions, OCIDs, hostnames, IPs, or customer-specific values in reusable instructions.
- Use discovered IDs as placeholder/input values only after user-confirmed scope.


## Official Oracle MCP Detection

Use the official Oracle MCP servers as configured in the current MCP runtime.

Do not hard-code the MCP server name. Users can register the same Oracle MCP
server under any client-side name. Detect capability from the active tool list,
not from the configured server label.

Detection order:

1. **Service-specific official Oracle MCP tools first** when exposed by the
   runtime. Examples from the official repo include:
   - `oracle.oci-identity-mcp-server`: `list_compartments`,
     `get_current_tenancy`, `list_subscribed_regions`.
   - `oracle.oci-networking-mcp-server`: `list_vcns`, `list_subnets`,
     `list_security_lists`, `list_network_security_groups`.
   - `oracle.oci-compute-mcp-server`: `list_instances`, `get_instance`,
     `list_images`.
   - `oracle.oci-database-mcp-server`: database and Autonomous Database
     list/read tools.
   - `oracle.oci-object-storage-mcp-server`: `get_namespace`, `list_buckets`,
     `list_objects`.
   - `oracle.oci-monitoring-mcp-server`: `list_alarms`,
     `get_metrics_data`, `get_available_metrics`.
   - `oracle.oci-resource-search-mcp-server`: `search_resources`.
   - `oracle.oci-usage-mcp-server` / `oracle.oci-pricing-mcp-server`: usage
     and pricing evidence where available.
2. **Generic official OCI API MCP second**: `oracle.oci-api-mcp-server` exposes
   `get_oci_command_help` and `run_oci_command`. Use this when no
   service-specific tool is available.
3. **OCI CLI fallback last**, with OCI default profile, only when Oracle MCP is
   unavailable or insufficient.

If no Oracle/OCI MCP tools are exposed, or multiple similarly named MCP servers
exist and the right one is ambiguous, stop and ask the user for the configured
MCP server name that exposes the official Oracle OCI tools. Ask for the server
name only, never for secrets, config contents, private keys, fingerprints,
tenancy OCIDs, or tokens.


## Platform-Agnostic Execution

These skills must work on macOS, Windows, Linux, and MCP-only clients. Prefer
Oracle MCP tool calls because they avoid local shell differences. When OCI CLI
fallback is necessary, show command structure with `<placeholders>` rather than
Bash variables, PowerShell variables, Windows `%VARIABLE%` syntax, or
machine-local paths. Adapt quoting, line continuation, and environment handling
to the user's active platform only at execution time.


## References

Load these only when needed, following progressive disclosure:

- [Official Oracle MCP Capability Mapping](references/oracle-mcp.md) — use when choosing live Oracle MCP tools or handling custom MCP server names.
- [Documentation Fallback](references/documentation-fallback.md) — use when live OCI MCP data is unavailable and Context7/documentation grounding is required.
- [Safety Checklist](references/safety-checklist.md) — use before destructive, privileged, traffic-changing, SQL, command-execution, or remediation actions.

## Preferred Official Oracle MCP Capabilities

- oracle.oci-compute-mcp-server: list_instances, get_instance, list_images, get_image, instance_action; oracle.oci-compute-instance-agent-mcp-server for command execution evidence.
- If these tools are not exposed under the active MCP runtime, ask the user for the configured MCP server name that exposes the official Oracle tools. Ask for the name only, not credentials or config contents.

## Documentation Fallback When Live Data Is Unavailable

Live OCI MCP data beats documentation. If live MCP data is unavailable, incomplete, or denied, switch to documentation/reference mode:

- Use Context7 with Oracle Cloud Infrastructure documentation (`/websites/oracle_en-us_iaas_content`) for OCI service behavior, IAM, limits, monitoring, security, cost, and operational concepts.
- Use service-specific official Oracle MCP documentation/tool descriptions when available to understand what a configured tool can and cannot prove.
- Ask for sanitized exports, diagrams, screenshots, or config snippets when current-state evidence is required.
- Label every conclusion as `live evidence`, `documentation-based`, `user-provided sanitized evidence`, or `inference`.
- Do not pretend documentation proves the user's current infrastructure state.

## Safe Workflow

1. **Classify the request.** Inventory, troubleshooting, configuration review, or lifecycle mutation.
2. **Confirm scope.** Region, compartment, instance display name, instance lifecycle state, and business owner.
3. **Discover state.** Pull instance, VNIC, image, shape, boot volume, block volume, backup, and monitoring context as needed.
4. **Check dependencies.** Load balancers, autoscaling, instance pools, volume attachments, reserved capacity, DNS, and automation may own the instance.
5. **Check access.** Review IAM, instance principals, SSH paths, bastion/VPN, public IPs, and metadata exposure.
6. **Plan minimal action.** Prefer non-destructive diagnostics before reboot/stop/terminate/replace.
7. **Require confirmation for mutation.** For stop, reboot, resize, detach, delete, terminate, or image changes, force explicit user confirmation of target and rollback.
8. **Validate outcome.** Confirm lifecycle state, health, reachability, logs/metrics, and unintended access boundaries.

## OCI MCP / CLI Discovery Examples

Prefer detected official Oracle MCP tools when exposed. CLI fallback uses the default profile:

```text
# Discover compartments if the user has not confirmed scope.
oci iam compartment list --all

# List compute instances in a confirmed compartment.
oci compute instance list --compartment-id <compartment_id> --all

# Drill into a confirmed instance.
oci compute instance get --instance-id <instance_id>
oci compute vnic-attachment list --compartment-id <compartment_id> --instance-id <instance_id> --all
oci compute boot-volume-attachment list --compartment-id <compartment_id> --instance-id <instance_id> --all
```

Use `<compartment_id>` and `<instance_id>` placeholders only after discovery or user confirmation. Do not dump OCI config or credentials. Add `--profile <profile>` only when explicitly requested.

## Least-Privilege / IAM Review Guidance

For compute operations, challenge these grants:

- Does the operator need `manage instances`, or only `inspect/read/use instance-family`?
- Are volume operations needed, or was `volume-family` copied in lazily?
- Are network permissions required for VNIC changes, or just read-only network discovery?
- Does instance-principal access need dynamic group membership, or can it be narrowed?
- Are image, shape, capacity reservation, or instance-pool permissions actually in scope?
- Can destructive actions be separated from routine operations?

Minimum-permission thinking:

- Inventory: start with inspect/read permissions.
- Start/stop/reboot: grant only lifecycle actions to the correct compartment.
- Resize/VNIC/volume changes: add the specific dependent resource permissions.
- Termination/delete: require separate approval path and audit evidence.

## Compute Operation Guardrails

Before lifecycle or destructive changes, require explicit confirmation of:

- target compartment and region
- instance display name and discovered instance identifier
- current lifecycle state
- action requested and business reason
- expected downtime and owner approval
- rollback plan or recovery artifact: backup, boot volume, custom image, launch config, or Terraform/state reference

Never treat a display name match alone as enough for destructive action. Names are not unique. Confirm with compartment, lifecycle state, and other non-secret attributes.

## Review Checklist

- **Exposure:** Public IPs, open SSH/RDP, security groups/lists, bastion path.
- **Identity:** Instance principals, dynamic groups, policies, metadata usage.
- **Resilience:** Backups, boot volume preservation, custom images, autoscaling or instance-pool ownership.
- **Operations:** Monitoring, alarms, serial console readiness, patching, cloud-init idempotency.
- **Cost/capacity:** Shape utilization, stopped-but-billed resources, block volumes, reserved capacity.
- **Ownership:** Tags, compartment placement, Terraform or other IaC ownership.

## Output / Report Template

```markdown
## OCI Compute Operation Review

Scope:
- Profile: default OCI profile unless otherwise stated
- Compartment/region: <confirmed>
- Instance(s): <confirmed names and non-secret identifiers>
- Requested action: <inventory/troubleshoot/lifecycle change>

Current State:
- Lifecycle:
- Shape/image:
- VNIC/public exposure:
- Volumes/backups:
- IAM/instance principal:
- IaC/owner:

Findings:
1. <finding> — Severity: LOW/MEDIUM/HIGH
   Evidence: <MCP/CLI/source>
   Recommendation: <minimal safe action>

Change Plan:
- Action:
- Blast radius:
- Downtime:
- Rollback/recovery:

Validation:
- State check:
- Health/reachability:
- Negative access check:
```

## Red Flags

- User asks to terminate/stop/reboot by name only.
- Instance appears managed by Terraform, instance pool, autoscaling, or another controller.
- No boot volume backup, custom image, or rollback path exists.
- Public IP plus broad ingress is present but ignored.
- Instance principal has broad tenancy access.
- Troubleshooting jumps to reboot before checking metrics, events, serial console, VNICs, and route/security path.
