Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/LambdaTest/agent-skillsnpx agentmods add skills/lambdatest/agent-skills/behat-skillWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/lambdatest/agent-skills/behat-skill)<a href="https://agentmods.dev/skills/lambdatest/agent-skills/behat-skill"><img src="https://agentmods.dev/badge/skills/lambdatest/agent-skills/behat-skill.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00076 | $0.01200 |
| Opus 5 | $0.00038 | $0.00600 |
| Sonnet 5 | $0.00015 | $0.00240 |
| Haiku 4.5 | $0.00008 | $0.00120 |
Grade A, and why
behat-skill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Behat BDD Skill
Core Patterns
Feature File (features/login.feature)
Feature: User Login
As a user I want to log in
Scenario: Successful login
Given I am on "/login"
When I fill in "email" with "[email protected]"
And I fill in "password" with "password123"
And I press "Login"
Then I should see "Dashboard"
And I should be on "/dashboard"
Scenario: Invalid credentials
Given I am on "/login"
When I fill in "email" with "[email protected]"
And I fill in "password" with "wrong"
And I press "Login"
Then I should see "Invalid credentials"
Custom Context (features/bootstrap/LoginContext.php)
<?php
use Behat\MinkExtension\Context\MinkContext;
use Behat\Behat\Context\Context;
class LoginContext extends MinkContext implements Context
{
/**
* @When I login as :email with password :password
*/
public function iLoginAs(string $email, string $password): void
{
$this->visit('/login');
$this->fillField('email', $email);
$this->fillField('password', $password);
$this->pressButton('Login');
}
/**
* @Then I should see the dashboard
*/
public function iShouldSeeTheDashboard(): void
{
$this->assertSession()->addressEquals('/dashboard');
$this->assertSession()->pageTextContains('Welcome');
}
/**
* @Then the response time should be under :ms milliseconds
*/
public function responseUnder(int $ms): void
{
// Custom performance assertion
}
}
Built-in MinkContext Steps
# Navigation
Given I am on "/path"
When I go to "/path"
When I reload the page
# Forms
When I fill in "field" with "value"
When I select "option" from "select"
When I check "checkbox"
When I uncheck "checkbox"
When I press "button"
When I attach the file "path" to "field"
# Assertions
Then I should see "text"
Then I should not see "text"
Then I should be on "/path"
Then the response status code should be 200
Then the "field" field should contain "value"
Then I should see an "css-selector" element
Then print current URL
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 180 lines · 76 tokens per session scan A 5c6870df2585
behat-skill is a skill published in the GitHub repository LambdaTest/agent-skills (367 stars, last pushed 1mo ago), licensed MIT. It adds 76 tokens to every session and 1,200 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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