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hosted-agents

Build background agents in sandboxed environments. Use for hosted coding agents, sandboxed VMs, Modal sandboxes, and remote coding environments.

Quality

64%

Does it follow best practices?

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tessl review fix ./plugins/AI-Agents-Safe-Coding-Skills/skills/hosted-agents/SKILL.md

The canonical home for this skill is hosted-agents in administrakt0r/AI-Agents-Safe-Coding-Skills

SKILL.md
Quality
Evals
Security

Quality

Content

42%Weight 40%Scale 1-5

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

The body contains substantive and genuinely expert architecture guidance (warm pools, predictive warm-up, parallel file reads, user-attributed commits), but it is padded with redundant boilerplate sections, offers no executable examples, and inlines everything that a well-structured bundle would split into reference files. One referenced internal document does not exist in the bundle.

Suggestions

Remove the redundant sections — "Skill Metadata", the trailing "When to Use" boilerplate, "Core Concepts", and the "Guidelines" section that restates Detailed Topics — to cut a substantial number of tokens without losing information.

Add executable artifacts for the most operational guidance: example Modal sandbox spin-up code, a SQLite per-session state snippet, and a concrete git-config/token setup for user-attributed commits.

Split detailed topics (sandbox infrastructure, client implementations, speed optimizations) into files under references/, and fix or remove the dangling "Infrastructure Patterns" internal reference, which has no corresponding file in the bundle.

DimensionReasoningScore

Conciseness

Several padded or redundant sections are present: "## Skill Metadata" (author/version/dates), the trailing boilerplate "Use this skill when tackling tasks related to its primary domain or functionality as described above", "Core Concepts" restating the intro, and "Guidelines" repeating eight points already made in Detailed Topics (image cadence, warm-up, per-session state, commit attribution). This matches the anchor for noticeably verbose with several unnecessary padded sections, though the underlying material is substantive rather than trivially known, keeping it above a 1.

2 / 5

Actionability

There are genuine concrete specifics — "every 30 minutes works well", "SQLite per session works well", the `tool.execute.before` event name, and the numbered Sandbox-to-API Flow — but the entire body contains no executable code, commands, or configuration snippets. This lands on the anchor for some concrete guidance that is incomplete with key implementation details missing, above the high-level-hints-only level of 2.

3 / 5

Workflow Clarity

Topics are well organized by area and the "Sandbox-to-API Flow" is a clear 4-step numbered sequence, but there is no end-to-end build workflow connecting the sections and no validation checkpoints anywhere. The sequence-present-but-checkpoints-missing anchor at 3 fits; the operations described are architectural rather than destructive/batch, so no lower cap applies.

3 / 5

Progressive Disclosure

Section structure is good and external resources are clearly listed, but ~270 lines of detail that belongs in separate reference files (client implementations, speed optimizations, sandbox infrastructure patterns) are inlined. The "Internal reference: Infrastructure Patterns - Detailed implementation patterns" points to no actual file — no references/ directory exists in the bundle — which weakens navigation and keeps this at 3 rather than 4.

3 / 5

Total

11

/

20

Passed

Description

70%Weight 40%Scale 1-5

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

A solid description that explicitly answers both what the skill does and when to use it, with a good set of natural trigger terms including a specific platform name. Its main weakness is a thin single-action 'what' statement and a trigger list that could include more synonyms.

DimensionReasoningScore

Specificity

"Build background agents in sandboxed environments" names the domain plus one concrete action, matching the anchor for 1-2 concrete actions without comprehensive coverage. It is above a bare domain label ("Processes PDF files") but lists only a single build action, not the several specific actions required for a 4.

3 / 5

Completeness

Both parts are explicitly present: what ("Build background agents in sandboxed environments") and when ("Use for hosted coding agents, sandboxed VMs, Modal sandboxes, and remote coding environments"). It sits just below the 5 anchor because the 'what' is a single thin verb phrase and the 'when' is a domain list rather than concrete user-situation trigger phrases.

4 / 5

Trigger Term Quality

"hosted coding agents, sandboxed VMs, Modal sandboxes, and remote coding environments" provides good natural keyword coverage including a specific product name users would say. It falls short of the 5 anchor because common synonyms like "background agents", "cloud dev environments", or equivalent phrasing variants are absent from the trigger list.

4 / 5

Distinctiveness Conflict Risk

The sandboxed hosted-agent infrastructure niche is mostly distinct, with concrete triggers like "Modal sandboxes" and "sandboxed VMs" that few other skills would claim. Minor overlap risk remains with adjacent agent-orchestration and tooling skills, so it is not a clear 5.

4 / 5

Total

15

/

20

Passed

Validation

93%

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

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository

administrakt0r/AI-Agents-Safe-Coding-Skills

Path

plugins/AI-Agents-Safe-Coding-Skills/skills/hosted-agents/SKILL.md

Reviewed

Table of Contents

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