BigCommerce API expert for building integrations, apps, headless storefronts, and automations. Full lifecycle - REST APIs, GraphQL Storefront, webhooks, authentication, app development, and multi-storefront.
SkillScore82Maintained
Automatic
◆Coding pack
Last verified 8/13/2026
What it changes
Passed 18 of 22 test cases with the skill, and 12 of 22 without it.
Without skill55%
With skill82%
Checks it passed that the model alone missed
Directs to workflows/build-app.md.
Directs to workflows/build-integration.md.
Specifies using the V2 API for customer groups.
and 4 more in the full report
7 fixed11 passed either way3 still failing1 broke
Pass-rate lift
+27 pp
Tokens
+50%
Agent turns
0%
Response time
-37%
Model gemini-3.6-flashMeasured 8/13/2026v118 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 7
Prompt
What base domain and path structure is required when directing requests to the BigCommerce Payments API?
What was checked, without and with the skill
Checked
Without skill
With skill
Identifies https://payments.bigcommerce.com/stores/{store_hash}/payments as the Payments API base URL.
Missed
Passed
case-15 · gemini-3.6-flash · 8/13/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md157 lines12 files
<essential_principles>
Always check which version supports your specific endpoint.
Never embed credentials in client-side code. Use environment variables.
Monitor headers: X-Rate-Limit-Requests-Left, X-Rate-Limit-Time-Reset-Ms
Implement exponential backoff with jitter for retries.