Supabase Postgres Best Practices
supabase/agent-skills
Gives the agent Postgres rules to consult before writing or changing tables, queries, indexes, RLS policies or migrations, and when diagnosing slow queries.
Agent skill
Supabase Schema From Requirements
by jeremylongshore in jeremylongshore/tons-of-skills-marketplace
Design Supabase Postgres schema from business requirements with migrations, RLS, and types.
Install Supabase Schema From Requirements
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace supabase-schema-from-requirements --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/supabase-schema-from-requirements .claude/skills/supabase-schema-from-requirements && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "supabase-schema-from-requirements" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/supabase-schema-from-requirements into .claude/skills/supabase-schema-from-requirements/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "supabase-schema-from-requirements", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/supabase-schema-from-requirementsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace supabase-schema-from-requirements --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/.curated/supabase-schema-from-requirements .agents/skills/supabase-schema-from-requirements && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "supabase-schema-from-requirements" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/supabase-schema-from-requirements into .agents/skills/supabase-schema-from-requirements/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "supabase-schema-from-requirements", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace supabase-schema-from-requirements --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/.curated/supabase-schema-from-requirements .cursor/skills/supabase-schema-from-requirements && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "supabase-schema-from-requirements" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/supabase-schema-from-requirements into .cursor/skills/supabase-schema-from-requirements/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "supabase-schema-from-requirements", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jeremylongshore/tons-of-skills-marketplace.git --path skills/.curated/supabase-schema-from-requirements--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace supabase-schema-from-requirements --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/.curated/supabase-schema-from-requirements .gemini/skills/supabase-schema-from-requirements && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "supabase-schema-from-requirements" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/supabase-schema-from-requirements into .gemini/skills/supabase-schema-from-requirements/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "supabase-schema-from-requirements", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jeremylongshore/tons-of-skills-marketplace supabase-schema-from-requirementsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/.curated/supabase-schema-from-requirements .github/skills/supabase-schema-from-requirements && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "supabase-schema-from-requirements" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/supabase-schema-from-requirements into .github/skills/supabase-schema-from-requirements/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "supabase-schema-from-requirements", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace supabase-schema-from-requirements --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/.curated/supabase-schema-from-requirements .opencode/skills/supabase-schema-from-requirements && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "supabase-schema-from-requirements" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/supabase-schema-from-requirements into .opencode/skills/supabase-schema-from-requirements/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "supabase-schema-from-requirements", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
supabase-schema-from-requirements- GitHub stars
- 2.8k
- Token cost
- ~1.8k tokens
- SKILL.md length
- 652 words
- Files
- 4 (incl. references)
- Skills in repo
- 3,342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Design Supabase Postgres schema from business requirements with migrations, RLS, and types.
- Works in 3 steps: Parse Requirements and Create Migration → Add Row Level Security Policies → Apply Migration and Generate Types
- Translating specifications into database tables
- SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 4 more sections
- Calls npx, supabase and npm
What it does
Supabase Schema From Requirements is an agent skill from jeremylongshore/tons-of-skills-marketplace. Design Supabase Postgres schema from business requirements with migrations, RLS, and types. Use when translating specifications into database tables, creating migration files, adding Row Level Security policies, or generating TypeScript types from schema. Trigger with phrases like "supabase schema", "design database supabase", "schema from requirements", "supabase migration", "supabase tables from spec".
Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `references/rls-policies.md`, `references/typescript-client.md` and `references/worked-schema-examples.md`). Compatibility notes: Designed for Claude Code
It sits in Databases, covering PRD writing, Type safety and Translation. It works with Supabase and PostgreSQL. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.
When your agent uses it
- Translating specifications into database tables
- Creating migration files
- Adding Row Level Security policies
- Generating TypeScript types from schema
Example prompts
- “supabase schema”
- “design database supabase”
- “schema from requirements”
- “/supabase-schema-from-requirements”
Requirements
- Node.js
- Compatibility (from SKILL.md): Designed for Claude Code
- Pre-approved tools (allowed-tools): Read, Write, Bash(supabase:*), Bash(npx:*)
Workflow steps
3 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteBash(supabase:*)Bash(npx:*)
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npxsupabasenpm
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
supabase.compostgresql.org
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Designed for Claude Code
From compatibility in the SKILL.md frontmatter.
Context cost
Supabase Schema From Requirements loads about 1.8k tokens when it runs, and up to ~4.3k if it reads all its reference files. Until then it costs about 110 tokens; SKILL.md has 652 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 652 words, ~1,836 tokens.
Download SKILL.mdSave it as
.claude/skills/supabase-schema-from-requirements/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- supabase-schema-from-requirements
- description
- Design Supabase Postgres schema from business requirements with migrations, RLS, and types. Use when translating specifications into database tables, creating migration files, adding Row Level Security policies, or generating TypeScript types from schema. Trigger with phrases like "supabase schema", "design database supabase", "schema from requirements", "supabase migration", "supabase tables from spec".
- allowed-tools
- Read, Write, Bash(supabase:*), Bash(npx:*)
- compatibility
- Designed for Claude Code
- version
- 1.54.0
- license
- MIT
- author
- Jeremy Longshore <jeremy@intentsolutions.io>
- tags
- saas, supabase, database, migration, schema-design, postgres, rls
Supabase Schema from Requirements
Overview
Translate business requirements into a production-ready Postgres schema inside Supabase, covering the full path from specification to applied migration: entity extraction, tables with proper types and constraints, Row Level Security policies, performance indexes, timestamp triggers, and TypeScript type generation. Getting this right early matters because every downstream feature — auth, storage, realtime, edge functions — depends on well-designed tables.
Prerequisites
- Supabase CLI installed (
npm install -g supabase) and project linked (supabase link) @supabase/supabase-jsv2+ installed in the project- Business requirements, PRD, or specification document identifying entities and access rules
- Local Supabase running (
supabase start) or a linked remote project
Instructions
Step 1: Parse Requirements and Create Migration
Read the requirements document and extract entities, attributes, relationships, and access control rules. Map each entity to a Postgres table.
Entity extraction example (project management app):
| Entity | Key Columns | Relationships |
|---|---|---|
| Organization | name, slug, plan | has many Projects, has many Members |
| Project | name, description, status | belongs to Organization, has many Tasks |
| Task | title, priority, status, due_date | belongs to Project, assigned to User |
| Member | role (owner/admin/member) | junction linking User to Organization |
Create the migration file:
npx supabase migration new create_tables
# Creates: supabase/migrations/TIMESTAMP_create_tables.sqlWrite the migration SQL using standard Postgres data types (uuid, text, integer, boolean, timestamptz, jsonb):
Full worked migration (project-management app — tables, FKs, indexes, moddatetime triggers): references/worked-schema-examples.md.
Data type selection guide:
| Use case | Type | Notes |
|---|---|---|
| Primary keys | uuid | Always with uuid_generate_v4() default |
| Names, titles | text | Prefer over varchar in Postgres |
| Counts, ranks | integer | Use bigint for sequences |
| Flags | boolean | Default explicitly to true or false |
| Timestamps | timestamptz | Never use timestamp without timezone |
| Flexible data | jsonb | Queryable JSON; use for settings, metadata |
| Lists | text[] | Postgres arrays for simple tags or labels |
Step 2: Add Row Level Security Policies
Every table exposed to the client must have RLS enabled. Write reusable security definer helper functions first, then write per-table policies that call them. The
skeleton for one table:
alter table public.organizations enable row level security;
create policy "Users read own orgs"
on public.organizations for select
using (public.is_org_member(id));The full worked policy set — the is_org_member / is_org_admin helper functions and
every select/insert/update/delete policy across organizations, members, projects, and
tasks — is in references/rls-policies.md. Name policies
after who and what action ("Admins manage members", "Assignee updates tasks").
Step 3: Apply Migration and Generate Types
# Apply migration locally
npx supabase db reset
# Or push to a linked remote project
npx supabase db push
# Generate TypeScript types from the live schema
npx supabase gen types typescript --local > types/supabase.tsPass the generated Database type as the generic parameter to createClient (see
import type { Database } from './types/supabase') for end-to-end type safety on every
query. Full typed-client walkthrough — typed inserts, foreign-key joins, nested multi-table
joins, and an RLS-enforcement check — is in
references/typescript-client.md.
Show full SKILL.md (260 more words)Show less
Output
- SQL migration file under
supabase/migrations/with all tables, constraints, and indexes - RLS policies matching the access control rules from requirements
- Helper functions (
is_org_member,is_org_admin) for reusable authorization checks moddatetimetriggers for automaticupdated_atmanagement- Generated TypeScript types at
types/supabase.tsfor type-safe client queries - Partial indexes on frequently filtered columns (status, due_date)
Error Handling
| Error | Cause | Solution |
|---|---|---|
42P07: relation already exists | Table name collision in migration | Use create table if not exists or rename the table |
23503: foreign key violation | Insert references a nonexistent parent row | Insert parent rows first, or check the UUID |
42501: insufficient privilege | RLS helper function permissions | Add security definer to the function definition |
42883: function uuid_generate_v4() does not exist | Extension not enabled | Add create extension if not exists "uuid-ossp" |
supabase db push succeeds but tables missing | Migration was already recorded | Check supabase_migrations.schema_migrations and repair |
PGRST204: column not found | TypeScript types out of sync | Re-run npx supabase gen types typescript --local > types/supabase.ts |
new row violates row-level security | RLS policy blocks the operation | Verify auth.uid() matches expected value; check policy using clause |
moddatetime trigger fails | Extension not enabled | Add create extension if not exists "moddatetime" at top of migration |
Examples
E-commerce schema (different domain, same pattern). The complete e-commerce migration SQL — stores, products, orders, order_items with FKs and indexes — is in references/worked-schema-examples.md, and the matching typed client queries are in references/typescript-client.md.
Resources
- Row Level Security Guide
- Database Migrations
- Supabase CLI Reference
- JavaScript Client — Select
- TypeScript Support
- PostgreSQL Data Types
Next Steps
For auth integration, file storage, and realtime subscriptions on top of this schema, proceed to supabase-auth-storage-realtime-core.
© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 3 other files (references) in skills/.curated/supabase-schema-from-requirements of jeremylongshore/tons-of-skills-marketplace.
- SKILL.md
- references/rls-policies.md
- references/typescript-client.md
- references/worked-schema-examples.md
Open the folder on GitHubat commit cfae287
Compare with similar skills
Supabase Schema From Requirements next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Supabase Schema From Requirements this skilljeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.8k | Automated safety check: Pass | MIT | |
| Supabase Postgres Best Practicessupabase/agent-skills | 2.7k | 24 repos | ~808 | Automated safety check: Pass | MIT | |
| Expert DatabaseReJeCtAll/ExpertTeam-Codex | 113 | — | ~692 | Automated safety check: Pass | MIT | |
| Database Domain Specialistmodu-ai/moai-adk | 1.2k | — | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Postgres Patternsaffaan-m/ECC | 276k | — | ~1k | Automated safety check: Pass | MIT | |
| Memstack Security Rls Guardiancwinvestments/memstack | 423 | — | ~3.4k | Automated safety check: Pass | Proprietary |
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Works with
Questions about Supabase Schema From Requirements
What does Supabase Schema From Requirements do?
Design Supabase Postgres schema from business requirements with migrations, RLS, and types. Supabase Schema From Requirements is an agent skill from jeremylongshore/tons-of-skills-marketplace. Design Supabase Postgres schema from business requirements with migrations, RLS, and types.
When should I use Supabase Schema From Requirements?
Supabase Schema From Requirements fits situations like: translating specifications into database tables; creating migration files; adding Row Level Security policies; generating TypeScript types from schema.
How do I install Supabase Schema From Requirements in Claude Code?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a claude-code`. Or copy the skill folder (skills/.curated/supabase-schema-from-requirements in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/supabase-schema-from-requirements in your project. Claude Code loads it when a task matches its description.
How do I install Supabase Schema From Requirements in Codex?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a codex`. Or copy the skill folder (skills/.curated/supabase-schema-from-requirements in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/supabase-schema-from-requirements in your project. Codex loads it when a task matches its description.
Can I use Supabase Schema From Requirements in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill supabase-schema-from-requirements -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/supabase-schema-from-requirements, .gemini/skills/supabase-schema-from-requirements, .github/skills/supabase-schema-from-requirements and .opencode/skills/supabase-schema-from-requirements in your project.
What does Supabase Schema From Requirements need to run?
Going by SKILL.md and its folder, Supabase Schema From Requirements needs the command-line tools its instructions call (npx, supabase and npm). Our summary lists: Node.js. Its frontmatter pre-approves these tools: Read, Write, Bash(supabase:*), Bash(npx:*). Compatibility (from SKILL.md): Designed for Claude Code.
Does Supabase Schema From Requirements access the network?
SKILL.md names 2 domains. As links in the text: supabase.com and postgresql.org. This is read from the text; nothing was executed.
Is Supabase Schema From Requirements safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Supabase Schema From Requirements use?
Supabase Schema From Requirements is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Supabase Schema From Requirements use?
About 1.8k tokens (SKILL.md is roughly 7.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.4k tokens, read only when the agent opens those files.
What are the alternatives to Supabase Schema From Requirements?
Skills that share tags, products or a category with Supabase Schema From Requirements: Supabase Postgres Best Practices (supabase/agent-skills, 2.7k stars), Expert Database (ReJeCtAll/ExpertTeam-Codex, 113 stars), Database Domain Specialist (modu-ai/moai-adk, 1.2k stars) and Postgres Patterns (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Supabase Schema From Requirements?
jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.
Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.