relational-database-web-cloudbase

relational-database-web-cloudbase is a skill for Claude Code, Codex from sutchan/Agent-Skills-Hub. It costs 68 tokens per session (1,060 once invoked), scanned A, a copy of relational-database-web-cloudbase, MIT.

A guide for connecting a browser-based website or web app to CloudBase Relational Database through its JavaScript software library.

In plain words
What is it for?
It is for setting up a shared browser database connection and running table queries in web applications, including migrations from services such as Supabase.
Why use it?
It helps distinguish browser database access from server-side or administrative database work, reducing the risk of using the wrong connection method.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It is for setting up a shared browser database connection and running table queries in web applications, including migrations from services such as Supabase.

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Install with agentmods
npx agentmods add skills/sutchan/agent-skills-hub/relational-database-web-cloudbase
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add sutchan/Agent-Skills-Hub --skill relational-database-web-cloudbase
Clone the repo
git clone --depth 1 https://github.com/sutchan/Agent-Skills-Hub

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for relational-database-web-cloudbase

README.md
[![agentmods](https://agentmods.dev/badge/skills/sutchan/agent-skills-hub/relational-database-web-cloudbase/github.svg)](https://agentmods.dev/skills/sutchan/agent-skills-hub/relational-database-web-cloudbase)
Your own site
<a href="https://agentmods.dev/skills/sutchan/agent-skills-hub/relational-database-web-cloudbase"><img src="https://agentmods.dev/badge/skills/sutchan/agent-skills-hub/relational-database-web-cloudbase/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for relational-database-web-cloudbase

Your own site · 80×15
<a href="https://agentmods.dev/skills/sutchan/agent-skills-hub/relational-database-web-cloudbase"><img src="https://agentmods.dev/badge/skills/sutchan/agent-skills-hub/relational-database-web-cloudbase.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,060 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 98% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00068 $0.01060
Opus 5 $0.00034 $0.00530
Sonnet 5 $0.00014 $0.00212
Haiku 4.5 $0.00007 $0.00106

Measured 8d ago against content hash c6199f52a80d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

relational-database-web-cloudbase 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.

Origin

This is a copy

98% identical to relational-database-web-cloudbase — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/cloudbase/references/relational-database-web-cloudbase/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sibling skills (local only)

Sibling CloudBase skills ship beside this skill. Use local relative paths such as ../auth-tool-cloudbase/SKILL.md.

If a referenced sibling skill file is missing from this environment, ask the user to install the full CloudBase plugin (or the missing skill). Do not HTTP-fetch remote skill or protocol markdown into the agent context.

CloudBase Relational Database Web SDK

Activation Contract

Use this first when

  • A browser or Web app must access CloudBase Relational Database through @cloudbase/js-sdk.
  • The task is specifically about frontend initialization and browser-side query usage.

Read before writing code if

  • You need to distinguish browser SDK usage from MCP database management or backend Node access.
  • The request mentions Supabase migration, shared frontend DB client, or browser-side table queries.

Then also read

  • MySQL SQL management and MCP operations -> ../relational-database-mcp-cloudbase/SKILL.md
  • Web auth/login -> ../auth-web-cloudbase/SKILL.md
  • General Web app setup -> ../web-development/SKILL.md

Do NOT use for

  • MCP-based SQL provisioning, schema changes, or permissions management.
  • Backend/Node service access.
  • Document database operations.

Common mistakes / gotchas

  • Initializing SDKs in an MCP management flow.
  • Treating app itself as the relational database client.
  • Re-initializing CloudBase in every component.
  • Mixing frontend browser access with admin-style schema mutations.

Minimal checklist

  • Confirm the caller is a Web frontend.
  • Keep one shared CloudBase app and one shared relational DB client.
  • Route MySQL provisioning/schema work to relational-database-mcp-cloudbase. If the task says PostgreSQL, CloudBase PG, PG mode, app.rdb(), queryPgDatabase, managePgDatabase, or RLS, route to postgresql-development-cloudbase instead.
  • Handle auth separately before data access.

Overview

This skill standardizes the browser-side initialization pattern for CloudBase Relational Database.

Read the full file on GitHub · 148 lines

Changes

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.

  1. 8d ago First seen · 148 lines · 68 tokens per session scan A c6199f52a80d

Subscribe to this mod's changes

relational-database-web-cloudbase is a skill published in the GitHub repository sutchan/Agent-Skills-Hub (2 stars, last pushed today), licensed MIT. It adds 68 tokens to every session and 1,060 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to relational-database-web-cloudbase, differing in 2 lines, and is treated as a copy.

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