c2-sliver

Sliver C2 framework operations — server connection, listener setup, implant generation, BOF/Armory extensions, post-implant operations, HTTP C2 profiles.

Quality

80%

Does it follow best practices?

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Adds up to 20 points to the overall score

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Securityby

Critical

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Fix and improve this skill with Tessl

tessl review fix ./packages/decepticon/decepticon/skills/standard/post-exploit/c2-sliver/SKILL.md

Quality

Content

92%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is an excellent, executable, well-sequenced operational reference with strong validation checkpoints. Its one weakness is progressive disclosure: the main file is large and partially duplicates content that the existing quickstart reference could carry.

Suggestions

Trim the inline quick-reference command catalogs (e.g., the compact listener/generate listings) and point to references/sliver-quickstart.md for the full command menu, keeping SKILL.md as the procedure-and-OPSEC overview.

Ensure the Bundled Resources reference descriptions each state what content lives there so navigation is unambiguous.

Dimension	Reasoning	Score
Conciseness	The body is lean and code-dense with no padding about concepts Claude already knows; inline comments are operational ('better OPSEC', 'low-and-slow') rather than explanatory fluff.	3 / 3
Actionability	It provides fully executable commands with exact flags, concrete bash(command=...) harness invocations, a complete JSON C2 profile, and tables — copy-paste ready and complete rather than pseudocode.	3 / 3
Workflow Clarity	Multi-step processes are clearly sequenced with checkpoints: a numbered connection procedure, a CRITICAL compilation-timeout rules block with an explicit 'correct' example, and a section-9 validation checklist with feedback expectations.	3 / 3
Progressive Disclosure	Content is well-organized into nine labeled sections with a single, clearly signaled one-level reference (sliver-quickstart.md) that exists on disk, but the ~410-line main file is somewhat monolithic and duplicates quick-reference command material that could be offloaded to the bundled reference.	2 / 3
	Total	11 / 12 Passed

Description

67%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is specific and well-scoped to Sliver C2, but it omits any explicit 'Use when...' trigger guidance, capping completeness and limiting natural trigger-term quality.

Suggestions

Add a trailing 'Use when ...' clause naming natural trigger phrases a user would actually say (e.g. 'Sliver', 'sliver-client', 'sliver listener/beacon', 'generate a sliver implant', 'armory/BOF extensions').

Move the most common-natural-language trigger terms from metadata.when_to_use into the description so the 'when' half is explicit within the evaluated field.

Dimension	Reasoning	Score
Specificity	The description lists multiple concrete actions — 'server connection, listener setup, implant generation, BOF/Armory extensions, post-implant operations, HTTP C2 profiles' — matching the score-3 anchor for enumerating specific concrete actions.	3 / 3
Completeness	It clearly answers 'what does this do' but contains no 'Use when...' clause or equivalent explicit trigger guidance, which per the rubric caps completeness at 2.	2 / 3
Trigger Term Quality	It names relevant terms like 'Sliver C2 framework' and 'listener setup' but leans on technical jargon ('BOF/Armory extensions') and lacks the natural common-variation coverage; explicit user-facing trigger terms live only in metadata.when_to_use, outside the description target.	2 / 3
Distinctiveness Conflict Risk	It targets a clearly distinct niche — Sliver C2 specifically — making it unlikely to trigger for or conflict with unrelated skills.	3 / 3
	Total	10 / 12 Passed

Validation

93%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
metadata_version	'metadata.version' is missing	Warning

	Total	15 / 16 Passed

Repository: PurpleAILAB/Decepticon
Path: packages/decepticon/decepticon/skills/standard/post-exploit/c2-sliver/SKILL.md
Commit: e34afba

Reviewed: about 15 hours ago

Table of Contents

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