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talk-selajev-docker-sandboxes-agents

Use when the user asks about Oleg Šelajev's talk "You're absolutely right, it was your home directory!" (ext live / Testkube conference, 2026) — including questions about Docker Sandboxes, running AI agents in microVM isolation, the trifecta of agent risks (sensitive data + external comms + untrusted content), why containers aren't enough for agent isolation, SBX kits, secret injection / sentinel values, prompt injection horror stories, YOLO mode agents, or applying his sandboxing workflow to the user's own agent setup.

62

Quality

74%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

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tessl review fix ./talk-selajev-docker-sandboxes-agents/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

77%Scale 1-3

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

This is a well-crafted skill for a niche but clearly defined use case — helping users engage with a specific conference talk. Its greatest strengths are actionability (concrete steps for each interaction mode) and workflow clarity (explicit sequencing with verification-like safeguards such as verbatim-quote requirements and 'not from talk' markers). The main weaknesses are moderate redundancy across sections and the inability to verify referenced bundle files.

Suggestions

Consolidate the repeated 'read outline.md → find section → read transcript.md' pattern into a single shared preamble or numbered reference (e.g., 'Follow the standard lookup procedure [§Grounding rules]') to reduce token overhead across the five interaction sections.

Provide the referenced bundle files (outline.md, transcript.md, quotes.md) or at minimum a file listing so the progressive disclosure structure can be fully validated.

DimensionReasoningScore

Conciseness

The skill is reasonably efficient for its complexity — it covers multiple interaction patterns (audit, draft, Q&A, teach, proactive surfacing) without excessive padding. However, some sections repeat similar instructions (e.g., 'read outline.md then transcript.md' appears in nearly every section), and the grounding rules partially overlap with the per-section instructions. Could be tightened by consolidating shared steps.

2 / 3

Actionability

Each section provides concrete, step-by-step procedures: the audit section lists six specific dimensions with exact quotes to use, the kit-drafting section specifies the exact YAML structure elements to include, and the factual Q&A section has clear cite-by-line-number instructions. The guidance is specific and directly executable by Claude.

3 / 3

Workflow Clarity

Multi-step processes are clearly sequenced (e.g., 'read outline.md → find section → read transcript.md → quote verbatim → apply framework'). The audit workflow walks all six dimensions in order with explicit instruction not to skip weak areas. The kit-drafting workflow includes a validation-like step: marking additions beyond the talk as '[not from talk]' and asking rather than inventing when coverage gaps exist.

3 / 3

Progressive Disclosure

The skill references supporting files (outline.md, transcript.md, quotes.md) with clear navigation instructions, which is good progressive disclosure design. However, no bundle files were provided, so we cannot verify these references resolve correctly. The SKILL.md itself is moderately long but all inline content is necessary for the different interaction patterns. The structure is well-organized with clear section headers.

2 / 3

Total

10

/

12

Passed

Description

72%Scale 1-3

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 excels at trigger term coverage and distinctiveness, clearly identifying a very specific niche around a particular conference talk. However, it fails to describe what the skill actually does — it only specifies when to use it, not what actions or outputs it provides. Adding a brief 'what' clause would significantly improve it.

Suggestions

Add a 'what' clause at the beginning describing the skill's concrete actions, e.g., 'Answers questions about and summarizes key insights from Oleg Šelajev's talk...' before the 'Use when' clause.

Specify the output format or type of help provided (e.g., 'Provides explanations, code examples, and recommendations for sandboxing AI agents based on...').

DimensionReasoningScore

Specificity

The description names a specific domain (Docker Sandboxes, microVM isolation, agent risks, SBX kits, etc.) and references concrete topics, but it doesn't clearly describe what actions the skill performs — it focuses on what triggers it rather than what it does (e.g., 'answers questions about', 'summarizes', 'explains').

2 / 3

Completeness

The 'when' is explicitly and thoroughly covered with 'Use when the user asks about...' and a rich list of trigger scenarios. However, the 'what does this do' is essentially absent — it never states what the skill actually does (e.g., summarizes the talk, answers questions, provides recommendations). This caps completeness at 2.

2 / 3

Trigger Term Quality

Excellent coverage of natural trigger terms a user might say: 'Docker Sandboxes', 'microVM isolation', 'prompt injection', 'YOLO mode agents', 'secret injection', 'sentinel values', 'SBX kits', the speaker's name, and the talk title. These are highly specific and natural keywords.

3 / 3

Distinctiveness Conflict Risk

Extremely distinctive — it references a specific speaker, a specific talk title, a specific conference and year, and highly niche topics like SBX kits and sentinel values. Very unlikely to conflict with other skills.

3 / 3

Total

10

/

12

Passed

Validation

81%

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

Validation9 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

metadata_field

'metadata' should map string keys to string values

Warning

Total

9

/

11

Passed

Repository
AINativeDev/aidevcon-2026-ldn
Reviewed

Table of Contents

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