Create a Tessl plugin: turn agent workflows and guardrails into a versioned bundle of skills, rules, hooks, and MCP servers, then validate and publish it.
93
88%
Does it follow best practices?
Impact
95%
1.31xAverage score across 9 eval scenarios
Low
Low-risk findings worth noting
{
"context": "Tests whether plugin-creator builds a valid cross-agent hook artifact for deterministic, agent-independent PostToolUse behavior. The output must use the generic hooks tier, the supported matcher and command shape, a bundled entrypoint anchored through TESSL_PLUGIN_DIR, and must leave agent-native configuration to Tessl.",
"type": "weighted_checklist",
"checklist": [
{
"name": "Generic PostToolUse hook declared",
"description": "validate-after-edit/.tessl-plugin/plugin.json contains a top-level `hooks` field with a `PostToolUse` hook group",
"max_score": 16
},
{
"name": "Edit and Write matcher",
"description": "The PostToolUse hook group has a matcher that covers both Edit and Write tool calls, such as `Edit|Write`",
"max_score": 10
},
{
"name": "Valid command hook shape",
"description": "The group contains a command hook with `type: command`; if `args` is present the command is an executable and args are separate, otherwise the command is a valid shell command string",
"max_score": 12
},
{
"name": "Plugin path anchored correctly",
"description": "The hook declaration references its bundled entrypoint with the exact braced `${TESSL_PLUGIN_DIR}` token in command or args; it does not rely on a bare relative plugin path",
"max_score": 14
},
{
"name": "Hook entrypoint ships",
"description": "A substantive hook entrypoint exists under validate-after-edit/hooks/ and runs `npm run validate:changed`; the manifest reference resolves to that file",
"max_score": 14
},
{
"name": "Generic tier preferred",
"description": "The manifest does not use `nativeHooks` for this agent-independent requirement",
"max_score": 12
},
{
"name": "No prose-only substitute",
"description": "The output does not substitute a skill or rule that only tells the model to run validation instead of implementing the deterministic hook",
"max_score": 8
},
{
"name": "No direct agent config edits",
"description": "The output does not create or edit agent-native hook configuration such as .claude/settings.json or .cursor/hooks.json",
"max_score": 8
},
{
"name": "Valid plugin metadata",
"description": "validate-after-edit/.tessl-plugin/plugin.json has the requested name plus valid version and description fields",
"max_score": 6
}
]
}