CtrlK
BlogDocsLog inGet started
Tessl Logo

spawn

Launch N parallel subagents in isolated git worktrees to compete on the session task. Use when the user runs /hub:spawn or asks to start the competing agents for an initialized AgentHub session.

63

Quality

75%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

The risk profile of this skill

Fix and improve this skill with Tessl

tessl review fix ./engineering/agenthub/skills/spawn/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

68%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 skill body is well-structured, concise, and actionable, with concrete code templates and a clear spawn sequence. Its main gap is the absence of a validation/verification checkpoint in a batch workflow, which caps workflow clarity, and the external template reference could be more explicitly linked.

Suggestions

Add an explicit validation checkpoint after spawning (e.g., confirm all N agents launched successfully and session state flipped to 'running' before reporting success) to satisfy the batch-operation feedback-loop requirement.

Surface the external template reference as a clear link in the Templates section rather than burying it in prose, so the dispatch prompt source is unambiguous.

Trim the small justifications in Critical Rules ("for true parallelism", "each agent needs its own filesystem") to lean imperative statements for tighter token efficiency.

DimensionReasoningScore

Conciseness

The body is lean and assumes Claude's competence, avoiding explanations of git worktrees or subagents; minor justifications like "diverse strategies maximize the value of parallel exploration" and "each agent needs its own filesystem" could be trimmed but do not amount to notable verbosity.

4 / 5

Actionability

Provides concrete usage examples, a templates table with patterns, an explicit Agent() call template, and an exact bash command for state updates; the {variable} placeholders are justified flexibility rather than missing detail, leaving it just short of fully copy-paste ready.

4 / 5

Workflow Clarity

A clear four-step sequence is present (load config, write dispatch posts, launch all agents in one message, update state), but this is a batch operation (N parallel agents) with no validation or verification checkpoint that agents launched correctly or config loaded, which caps the score per the rubric's batch-operation guideline.

3 / 5

Progressive Disclosure

Content is organized into clearly labeled sections (Usage, Templates, What It Does, Critical Rules, After Spawn) with a one-level-deep reference to ../agenthub/references/agent-templates.md signaled in the Templates section; the reference is embedded in prose rather than cleanly linked, keeping it below the top anchor.

4 / 5

Total

15

/

20

Passed

Description

82%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.

The description clearly communicates a distinct capability with an explicit what-and-when structure and concrete trigger phrases. Its only weakness is that it describes a single composite action rather than enumerating several specific actions, which leaves specificity slightly below the top anchor.

DimensionReasoningScore

Specificity

Names one concrete, well-specified action ("Launch N parallel subagents in isolated git worktrees to compete on the session task") but does not list several specific actions, fitting the 1-2 concrete actions anchor rather than the multi-action anchors at 4-5.

3 / 5

Completeness

Explicitly states what the skill does (launch parallel subagents in isolated worktrees to compete) and when to use it ("Use when the user runs /hub:spawn or asks to start the competing agents for an initialized AgentHub session") with concrete trigger phrases.

5 / 5

Trigger Term Quality

Includes natural trigger terms users would say ("/hub:spawn", "start the competing agents", "AgentHub session") with good coverage, though it lacks comprehensive synonyms that would push it to 5.

4 / 5

Distinctiveness Conflict Risk

Targets a clear niche (competing parallel agents for an AgentHub session) with distinct triggers tied to a specific slash command and session state, minimizing conflict risk with other skills.

5 / 5

Total

17

/

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.

Validation15 / 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
alirezarezvani/claude-skills
Reviewed

Table of Contents

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.