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Grok Bot+18 agentsAI App Development Engineer
Get app plans, implementation code, tests, and launch reviews for new or existing applications.
$89.99
AI App Development Engineer
Example session with this skill installed
Write a Python helper that paginates a list using 1-based page numbers. Reject invalid page or size values and include unit tests.
- Read your context and instructions
- Compiled the ai app development
Created a list pagination helper and unit tests. Pages beyond the available items return an empty list; tests have not been run here.
Implementation and tests
Save as test_pagination.py.
import unittest
def paginate(items: list, page: int, size: int) -> list:
"""Return one page without modifying the input list."""
for name, value in (("page", page), ("size", size)):
if type(value) is not int or value < 1:
raise ValueError(f"{name} must be a positive integer")
start = (page - 1) * size
return items[start:start + size]
class PaginationTests(unittest.TestCase):
def test_pages(self):
items = [10, 20, 30, 40, 50]
self.assertEqual(paginate(items, 1, 2), [10, 20])
self.assertEqual(paginate(items, 2, 2), [30, 40])
self.assertEqual(paginate(items, 3, 2), [50])
self.assertEqual(paginate(items, 4, 2), [])
self.assertEqual(paginate([], 1, 2), [])
self.assertEqual(items, [10, 20, 30, 40, 50])
def test_invalid_arguments(self):
for value in (0, -1, 1.5, "2", True, None):
for page, size in ((value, 2), (1, value)):
with self.subTest(page=page, size=size):
with self.assertRaises(ValueError):
paginate([10], page, size)
Next steps
- Run
python -m unittest test_pagination.py. - Catch
ValueErrorwhere page settings enter your application.
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About this skill
An app idea can stall when requirements, code, and launch decisions do not line up. Get application plans, working code drafts, tests, and deployment guidance, or help fixing an existing project.
What it does
- Plan the build: Turn product requirements into a first-release scope, system design, and implementation roadmap.
- Develop features: Generate or modify application code, database structures, APIs, and user interfaces.
- Fix and improve: Investigate supplied errors, refactor code, and review architecture without unnecessary rewrites.
- Check launch risks: Review testing, security, performance, data integrity, and recovery needs.
How it works
- Share your app requirements, existing code, or failure details, along with relevant constraints.
- Ask to build, extend, debug, refactor, or review the application.
- Review the proposed scope and unresolved questions before expanding the work.
- Receive the requested implementation or review, with relevant tests and verification steps.
Works with
Your supplied programming languages, frameworks, databases, API documentation, and deployment environment. Technology recommendations can account for your existing stack, maintenance needs, and costs.
Why use this skill
Keep feature decisions connected to data, permissions, tests, and deployment needs. A phased roadmap helps you see dependencies before starting work. Reviews identify launch conditions and gaps rather than treating generated code as verified software.
Use cases
- Plan a first release for a customer portal.
- Add a feature to an existing application.
- Diagnose a failing API request.
- Review an app before deployment.
Known limitations
Testing and deployment verification depend on available tools, access, and evidence. External integrations need supplied documentation or verified contracts.
Test execution and deployment verification depend on available tools and access. External integrations require supplied documentation or verified API contracts.
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- 1
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- 2
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- 3
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