CtrlK
BlogDocsLog inGet started
Tessl Logo
SkillPublic

decepticon

Operate Decepticon OSS through its installed CLI and engagement MCP tools when the user asks to run or inspect an authorized security engagement or a local Blue Cell. Do not use for unrelated security questions or raw scanner commands.

Quality

80%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide
SecuritybySnyk

Low

Low-risk findings worth noting

Fix and improve this skill with Tessl

tessl review fix ./integrations/agent-skills/decepticon/SKILL.md
SKILL.md
Quality
Evals
Security

Decepticon operator

Use Decepticon as the user's security platform. The host decepticon command manages the installation and opens an interactive CLI. The registered MCP server exposes engagement control and observation to coding agents. These interfaces cover different operations; choose the one that actually exists.

Connect

  1. Check decepticon status. If the installation is missing, the user can run decepticon onboard. decepticon start starts services and opens the interactive terminal; it is not a headless scan command.
  2. For MCP, confirm decepticon_list_graphs works. A connection error means the stack or MCP registration needs attention. See the integration guide for Claude Code and Codex registration.
  3. The user can install this skill for both clients with decepticon skill install after a release containing that command.

Choose the operation

RequestSupported surface
Discover agents, list engagements, read status or a compact state summaryMCP decepticon_list_graphs, decepticon_list_engagements, decepticon_engagement_status, decepticon_engagement_state
Watch an engagementMCP decepticon_transcript with next_index; decepticon_watch for a bounded live sample
Send a follow-up or stop a runMCP decepticon_send_message or decepticon_cancel_engagement
Onboard, start, stop, update, inspect servicesHost decepticon command
Start or stop a local Blue Cell sensorInteractive CLI /blue up, /blue stop
Inspect a running Blue CellMCP decepticon_blue_status, decepticon_blue_sources, decepticon_blue_events, decepticon_blue_incidents, decepticon_blue_notifications, decepticon_blue_body, decepticon_blue_search, decepticon_blue_timeline; interactive CLI /blue verify and /blue analyze
List or toggle agent plugin bundlesMCP decepticon_plugin_bundles, decepticon_plugin_enable, decepticon_plugin_disable; interactive CLI /plugins
Control web dashboard or select the active CLI agentInteractive CLI /web, /agent

Do not invent MCP tools for Blue Cell setup or service management. The slash commands above work inside Decepticon's interactive terminal, not in the shell or the MCP bridge.

  • Poll decepticon_blue_events with its next_after cursor and decepticon_blue_notifications with its separate next_after cursor.
  • Check decepticon_blue_status for collector and monitor health before interpreting missing events. Cite exact incident IDs and event sequences.

Engagement workflow

  • Obtain the user's explicit target scope and rules of engagement before any active testing. State both included and excluded assets. Do not infer authorization from a URL or repository path.
  • For an existing CLI engagement, call decepticon_list_engagements, identify its thread_id, then read decepticon_engagement_state and decepticon_transcript. Keep the returned next_index for later reads.
  • decepticon_start_engagement binds the run to a workspace via workspace_path (default /workspace). To share the workspace binding the interactive CLI selected, pass the same binding explicitly — the binding is returned in the result's workspace_path field. A non-default binding must be the engagement's own directory (final segment = engagement_name, e.g. /workspace/<engagement_name>); anything else is rejected so one engagement's run cannot write into another engagement's workspace. The run still requires the workspace mapping on the server to exist and be authorized for that engagement; when in doubt, start the engagement in the interactive CLI and observe its thread through MCP.
  • Engagement targets are network assets (URLs, hosts, CIDRs, globs, git remotes). A local repository path is not a valid target — the standalone SAST/CI entry was removed (issue #1059); code analysis happens inside an engagement once the operation itself obtains the source, with the code mounted or fetched as part of that engagement's workflow.
  • decepticon_send_message queues a new turn behind an active run. Do not tell the user it changed the current execution until a subsequent transcript or state confirms the effect.
  • decepticon_engagement_findings reads a persisted graph.json only. An available=false result does not prove the absence of findings. For an installed CLI engagement, inspect the selected host workspace's findings/FIND-*.md and report/ artifacts when available. Cite the actual artifact and verification status; do not invent a SARIF result.
  • If a run is interrupted or fails, read the latest transcript and status before retrying. Stop polling when the user has the requested update or the run reaches a terminal state.

Read reference.md for exact MCP arguments and examples.md for CLI and MCP handoffs.

Repository

PurpleAILAB/Decepticon

Path

integrations/agent-skills/decepticon/SKILL.md

Last updated
First committed

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.