# Exposed Service Triage

> >

- **Type:** Skill
- **Install:** `agentstack add skill-stijnman-grok-custom-skills-exposed-service-triage`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [Stijnman](https://agentstack.voostack.com/s/stijnman)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [Stijnman](https://github.com/Stijnman)
- **Source:** https://github.com/Stijnman/grok-custom-skills/tree/main/.grok/skills/exposed-service-triage

## Install

```sh
agentstack add skill-stijnman-grok-custom-skills-exposed-service-triage
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Exposed Service Triage

## When to Use

- User says **exposed port** or task matches this capability
- User says **what is listening** or task matches this capability
- User says **fix exposed service** or task matches this capability
- User says **open port** or task matches this capability

## Workflow

1. Run read-only listener inventory (ss -tln, fuser) on user machine.
2. Map ports to processes; classify MCP-related vs system vs unknown.
3. Present findings table with risk tier and plain-language explanation.
4. Recommend: bind 127.0.0.1, disable service, or firewall rule.
5. Before stopping/disabling any service: hitl-approver required.
6. Never run aggressive remote scans or attack exposed services.

## Integrations

- `defensive-mcp-audit`
- `hitl-approver`

## Error Handling

| Failure | Response |
|---------|----------|
| Cannot identify process | Report port and binding; suggest sudo ss -tlnp with user consent. |
| User requests aggressive scan | Decline; offer defensive audit only. |

## Gotchas

- Common OS services on 0.0.0.0 may be intentional; explain before recommending disable.

## Safety & Ethics (Publication-Ready)

This skill is designed for public distribution. Constraints:

- Read-only discovery first; service changes only after HITL approval.
- No denial-of-service, exploitation, or unauthorized access attempts.
- Remediation is documented steps for the user or admin to apply.

### Prohibited actions

- No unauthorized access, malware, or harmful automation
- No silent exfiltration of data, credentials, or telemetry
- No destructive system changes without hitl-approver
- No publication of user PII or environment secrets in outputs

## Example

**Input:** User request matching triggers above.
**Output:** Structured result per workflow; local artifacts only unless user opts in.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [Stijnman](https://github.com/Stijnman)
- **Source:** [Stijnman/grok-custom-skills](https://github.com/Stijnman/grok-custom-skills)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-stijnman-grok-custom-skills-exposed-service-triage
- Seller: https://agentstack.voostack.com/s/stijnman
- Browse the marketplace: https://agentstack.voostack.com/browse

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