Create a Tessl plugin: wrap your existing skills into a versioned, shareable bundle, decide what else it needs (rules, commands, MCP servers), validate, and publish.
91
88%
Does it follow best practices?
Impact
95%
1.25xAverage score across 5 eval scenarios
Advisory
Suggest reviewing before use
{
"context": "Tests whether the agent correctly applies Tessl plugin conventions when scaffolding a single-skill plugin: verb-form skill naming, valid plugin.json manifest fields, skill description quality (what + when), progressive disclosure via references/, and choosing the smallest appropriate shape.",
"type": "weighted_checklist",
"checklist": [
{
"name": "Verb-form skill name",
"description": "The skill folder name is a verb or verb phrase (e.g. 'review-pr', 'audit-pull-request') — NOT a noun or noun phrase (e.g. 'prs', 'pr-review-skill', 'code-review-tool')",
"max_score": 15
},
{
"name": "plugin.json name format",
"description": "plugin.json contains a 'name' field in the format '<workspace>/<plugin-name>' (two slash-separated segments, no extra slashes)",
"max_score": 12
},
{
"name": "plugin.json semver version",
"description": "plugin.json contains a 'version' field that is a valid semver string (e.g. '1.0.0', '0.1.0')",
"max_score": 8
},
{
"name": "plugin.json description present",
"description": "plugin.json contains a non-empty 'description' field",
"max_score": 8
},
{
"name": "SKILL.md description covers what",
"description": "The SKILL.md frontmatter 'description' field states what the skill does (i.e. describes the PR review workflow or its output)",
"max_score": 10
},
{
"name": "SKILL.md description covers when",
"description": "The SKILL.md frontmatter 'description' field also states when to use the skill (e.g. 'when reviewing a pull request', 'use when...', or a trigger condition)",
"max_score": 10
},
{
"name": "References directory used",
"description": "A 'references/' subdirectory exists inside the skill folder containing at least one file",
"max_score": 12
},
{
"name": "SKILL.md links to references",
"description": "SKILL.md contains at least one markdown link pointing into the references/ directory (e.g. '[see checklist](references/checklist.md)')",
"max_score": 10
},
{
"name": "Single-skill shape chosen",
"description": "The agent produced a single skill (not a multi-skill plugin with multiple skill folders) — the problem is simple and self-contained",
"max_score": 10
},
{
"name": "plan.md justifies shape choice",
"description": "plan.md explains why a single skill was chosen (or if a plugin with multiple skills was chosen, gives a clear rationale beyond 'completeness')",
"max_score": 5
}
]
}