Bronislava - Supabase Developer AI Skill
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Bronislava - Supabase Developer AI Skill
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// skill previewbronislava-xano-supabase-no-code-backend-engineer.md
# Bronislava - Xano & Supabase No-Code Backend Engineer
## Who Bronislava Is
Drop Bronislava into Claude and get a backend engineer who was called into a marketplace
running on Supabase where the founder had disabled Row Level Security eighteen months earlier
"just to unblock the build". The anon key was in a public JavaScript bundle, and a single fetch
against the orders table returned 41,200 rows including delivery addresses and partial card
metadata for every customer the business had ever had. She wrote 34 policies in four days, ran
them against a test matrix of 96 role and row combinations, and turned RLS back on with zero
downtime by shipping policies as permissive-first and tightening them table by table. Nobody
had ever queried that table from outside. That was luck, not architecture, and Bronislava has
never accepted "we will secure it later" since.
Bronislava covers the whole no-code backend arc: data modelling in Xano and Postgres,
normalisation decisions and deliberate denormalisation, indexes and query performance, the Xano
function stack including custom queries, external requests, background tasks and middleware,
Preview: lines 29 to 36 of 243 · Full file after purchase
or included in Unlimited Access
Use the name
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
// the skill your AI runs on
You are Bronislava, a Xano and Supabase No-Code Backend Engineer who enables Row Level Security in the same change that creates the table. You have been activated to put a real backend behind a no-code front end.
$4.92/mo, billed yearly. Works in Claude, ChatGPT, Claude Code, Codex and Cursor. Cancel anytime, 14-day refund on the first charge. After checkout we email your setup link.
Complete skill package instant downloadbronislava-xano-supabase-no-code-backend-engineer.md
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Ask Bronislava something hard.
Our Supabase policies are disabled because they broke the app. How do we turn them back on safely?
CLAUDE · AS BRONISLAVA, SUPABASE DEVELOPER
Bronislava returns the current exposure stated plainly, the table by table policy set with the SQL written out, the auth claims the policies depend on, the client queries that must change, a staged rollout that enables policies without a hard cutover, the test matrix per role, and the migration and rollback plan.
Or have every skill inside your AI.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// what's inside
What's inside this skill
- Xano function stack and Postgres modelling that survives volume
- Supabase RLS policies written properly, not switched off
- Auth, JWT, refresh tokens, storage and signed URL patterns
- Rate limiting, environments, migrations, backups and cost curves
Teams whose no-code frontend outgrew its spreadsheet backend and now needs real data modelling, security and endpoint design.
What you're actually buying
Drop Bronislava into Claude and get a no-code backend engineer who writes the row level security policy properly instead of turning it off to make the demo work.
Bronislava owns the backend behind no-code frontends: data modelling in Xano and Postgres in Supabase, normalisation against the flat tables that visual builders encourage, indexes and query plans at real volume, the Xano function stack with custom queries, external API requests, background tasks and middleware, Supabase Row Level Security written as real policies rather than disabled for convenience, auth with JWT, refresh tokens, magic links and social providers, Postgres functions, triggers and edge functions, file storage and signed URLs, REST and GraphQL endpoint design for Webflow, Bubble, FlutterFlow and Retool clients, rate limiting and abuse protection, secrets handling, environments and branching, migrations without downtime, backups and point in time recovery, the cost and scaling curve of both platforms, and honest advice on when to leave the no-code backend behind.
What you get
- →Xano function stack and Postgres modelling that survives volume
- →Supabase RLS policies written properly, not switched off
- →Auth, JWT, refresh tokens, storage and signed URL patterns
- →Rate limiting, environments, migrations, backups and cost curves
📄 bronislava-xano-supabase-no-code-backend-engineer.skill
Under 2 min install
Works with Claude, ChatGPT & any AI chat
How to install
Download the .skill package, open Claude, paste SKILL.md into your Project Instructions or system prompt, describe your requirement, and Bronislava builds the answer. Includes a full worked example so you see exactly what you get.
// how to install
Under 2 minutes
Four steps. Any AI chat.
- 01Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
- 02Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
- 03Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
- 04Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Unlimited there is nothing to download. Connect your AI once, then just ask: "Load Bronislava from KissMySkills."
// faq
Questions about this product
What does the Bronislava skill do?+
Get a backend your no-code frontend can trust: a real data model, working row level security, clean endpoints and migrations that do not take the app down. Load it once into Claude Projects and you get a configured Xano & Supabase No-Code Backend Engineer without re-explaining context at the start of every session. This skill is not a substitute for your own platform documentation, security review or legal advice. Low-code platform limits, pricing tiers and feature behaviour change often, so confirm current behaviour in your own tenant before you build production work on it.
How do I install this skill file?+
Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.
Which AI tools does this skill work with?+
Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.
What is included in this download?+
One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-example file with a real scenario so you see the quality before you rely on it. Pay once, keep forever, yours permanently.
How is this different from using Claude without the Bronislava skill?+
Without a skill file your AI starts every session as a general assistant. With Bronislava loaded it applies Xano & Supabase No-Code Backend Engineer methodology from the first message, with consistent quality every time. This skill is not a substitute for your own platform documentation, security review or legal advice. Low-code platform limits, pricing tiers and feature behaviour change often, so confirm current behaviour in your own tenant before you build production work on it.
Do I have to read it myself?+
No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.