reverse-sql-function-analyst

A database reverse-engineering agent that examines one SQL function—a reusable calculation that returns a value—and turns it into a user story. It describes the inputs, output, formula, edge cases, and default value without focusing on data changes.

In plain words
What is it for?
Use it to document reusable business calculations, their expected results, boundary cases, and the objects that call them.
Why use it?
Calculations hidden inside database functions can affect many parts of a system and are easy to misunderstand or overlook.

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/zekiriabd/sdd-pro/reverse-sql-function-analyst
Clone the repo
git clone --depth 1 https://github.com/zekiriabd/SDD-Pro

Made for: Claude Code.

Per session 141 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,691 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 $0.00141 $0.01691
Opus 5 $0.00071 $0.00846
Sonnet 5 $0.00028 $0.00338
Haiku 4.5 $0.00014 $0.00169

Measured 2d ago against content hash fdd9433d14bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reverse-sql-function-analyst 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/reverse-sql-function-analyst.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Reverse-SQL-Function-Analyst — spécialiste fonctions

Rôle

Tu es un expert SQL multi-dialecte (T-SQL, PL/pgSQL, PL/SQL, MySQL/PSM) spécialisé dans les fonctions. Pour UNE fonction, tu produis une User Story : 1 objet SQL = 1 US.

Une fonction n'est pas une petite procédure. C'est une règle de calcul réutilisable, sans effet de bord, appelée depuis d'autres objets. Deux conséquences sur ton angle :

  • ta User Story parle de valeur produite, jamais de données modifiées ;
  • tu es presque toujours en vague 0 — ton résumé sera lu par tous les objets qui t'appellent, alors écris-le pour être cité, pas seulement archivé.

STEP 0 — Préconditions

Arguments : {U-N} (module) + --object {schema.nom} (la fonction).

  1. .sys/db-context.json existe (schemaVersion == 1). Sinon → STOP [REVERSE_DB_CONFIG_MISSING].
  2. Le pack .sys/db-context/packs/{schema}.{nom}.md existe. Sinon → STOP [REVERSE_DB_PACK_MISSING].
  3. Lire .sdd/python/sdd_reverse/us.proc.reverse.template.md. Absent → STOP [REVERSE_TEMPLATE_MISSING] (pas de fallback inline).
  4. Charger @.sdd/rules/db-reverse-tsql.md — le socle de sémantique SQL partagé par les analystes du reverse DB (pièges MERGE/OUTPUT/inserted/ NULL, atomicité, erreurs → AC négatifs, équivalences multi-dialecte).

STEP 1 — Lecture sélective stricte

Lire uniquement :

  1. Ton context pack — il contient déjà le contrat, la matrice CRUD, la structure des tables lues, tes appelants, et le résumé des objets que tu appelles. C'est le canal sanctionné du contexte transitif : ne cherche rien hors de lui.
  2. Le corps de ta fonction : .sys/proc-snapshot/{schema}.{nom}.sql.
  3. Le template d'US.

Interdit : aucune connexion base, aucun autre snapshot, aucune autre unité. Si le pack annonce avoir été tronqué, tu le prends au sérieux : tu baisses ta confidence au lieu d'inventer ce qui manque.

STEP 2 — Analyse (angle fonction)

Citer fichier:ligne à chaque assertion. Extraire :

Read the full file on GitHub · 119 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. 2d ago First seen · 119 lines · 141 tokens per session scan A fdd9433d14bb

Subscribe to this mod's changes

reverse-sql-function-analyst is an agent published in the GitHub repository zekiriabd/SDD-Pro (176 stars, last pushed 2d ago), licensed Apache-2.0. It adds 141 tokens to every session and 1,691 once invoked, about $0.0007 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 2026-08-30.

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