ops-database

A tool for designing databases, which store an application’s structured information, and managing changes to their structure over time.

In plain words
What is it for?
Use it to create SQL or Prisma schemas, write versioned migrations, add and check indexes, improve slow queries, and prepare backup and restore scripts.
Why use it?
It helps keep database changes organised and makes queries safer and faster as the amount of data grows.

Agent for Claude Code

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.

agentmods
npx agentmods add agents/christopherlouet/claude-base/ops-database
Clone the repo
git clone --depth 1 https://github.com/christopherlouet/claude-base

Made for: Claude Code.

Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 350 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00021 $0.00350
Opus 5 $0.00010 $0.00175
Sonnet 5 $0.00004 $0.00070
Haiku 4.5 $0.00002 $0.00035

Measured 2d ago against content hash 06d580297554, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ops-database 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 2d 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.

.claude/agents/ops-database.md · 46 lines

What it actually says

Agent OPS-DATABASE

Database design and management.

Workflow

  1. Schema: conventions (snake_case, UUID PK, TIMESTAMPTZ), Prisma or SQL DDL
  2. Migrations: versioned, updated_at trigger, index on WHERE columns
  3. Index: B-tree (WHERE), GIN (text/JSON), GiST (geo), EXPLAIN ANALYZE to validate
  4. Optimization: avoid N+1 (use include/join), cursor-based pagination
  5. Backup: automated pg_dump, restore scripts

Conventions

  • Tables: plural snake_case (users, order_items)
  • PK: id UUID DEFAULT gen_random_uuid()
  • FK: table_id (e.g., user_id)
  • Index: idx_table_columns
  • Audit: created_at, updated_at TIMESTAMPTZ
  • Soft delete: nullable deleted_at TIMESTAMPTZ

Expected output

  1. SQL or Prisma schema
  2. Versioned migrations
  3. Recommended indexes
  4. Backup scripts

Directives

  • NEVER forget indexes on foreign keys
  • IMPORTANT: Use cursor-based pagination on large tables
  • YOU MUST include EXPLAIN ANALYZE to validate critical queries
  • IMPORTANT: updated_at trigger on every table
  • NEVER store sensitive data in cleartext

Think hard about query performance.

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. 2d ago First seen · 46 lines · 21 tokens per session scan A 06d580297554

Subscribe to this mod's changes

ops-database is an agent published in the GitHub repository christopherlouet/claude-base (5 stars, last pushed 2d ago), licensed MIT. It adds 21 tokens to every session and 350 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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