sc-sqli

sc-sqli is a skill for Claude Code, Codex from ersinkoc/security-check. It costs 24 tokens per session (2,227 once invoked), scanned A, original, MIT.

A source-code checker for SQL injection. SQL injection occurs when untrusted input changes a database query instead of being treated only as data.

In plain words
What is it for?
Use it to inspect database, model, controller, repository, and query code across several programming languages. It covers error-based, blind, time-based, UNION-based, second-order, and ORM-bypass patterns.
Why use it?
It helps find database queries that attackers might alter to read, change, or delete information. It follows input from web requests through application code to query construction.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it to inspect database, model, controller, repository, and query code across several programming languages. It covers error-based, blind, time-based, UNION-based, second-order, and ORM-bypass patterns.

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Install with agentmods
npx agentmods add skills/ersinkoc/security-check/sc-sqli
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 ersinkoc/security-check --skill sc-sqli
Clone the repo
git clone --depth 1 https://github.com/ersinkoc/security-check

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 sc-sqli

README.md
[![agentmods](https://agentmods.dev/badge/skills/ersinkoc/security-check/sc-sqli/github.svg)](https://agentmods.dev/skills/ersinkoc/security-check/sc-sqli)
Your own site
<a href="https://agentmods.dev/skills/ersinkoc/security-check/sc-sqli"><img src="https://agentmods.dev/badge/skills/ersinkoc/security-check/sc-sqli/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 sc-sqli

Your own site · 80×15
<a href="https://agentmods.dev/skills/ersinkoc/security-check/sc-sqli"><img src="https://agentmods.dev/badge/skills/ersinkoc/security-check/sc-sqli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,227 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 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 5.1 $0.00024 $0.02227
Opus 5 $0.00012 $0.01113
Sonnet 5 $0.00005 $0.00445
Haiku 4.5 $0.00002 $0.00223

Measured 9d ago against content hash 961ac2ee2b9f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

sc-sqli 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 9d 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.

skills/sc-sqli/SKILL.md · 202 lines

How it starts

The opening of the file, as written. The whole thing — 202 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SC: SQL Injection

Purpose

Detects SQL injection vulnerabilities in all forms: classic (error-based), blind (boolean and time-based), UNION-based, second-order, and ORM bypass patterns. Traces user input from HTTP request parameters through application logic to database query construction, identifying points where unsanitized data enters SQL statements.

Activation

Called by sc-orchestrator during Phase 2 (Vulnerability Hunting). Runs against all detected languages.

Phase 1: Discovery

File Patterns to Search

**/*.go, **/*.ts, **/*.js, **/*.py, **/*.php, **/*.java, **/*.kt, **/*.cs,
**/*.rb, **/routes/*, **/controllers/*, **/models/*, **/repositories/*,
**/dal/*, **/dao/*, **/*query*, **/*sql*, **/*database*, **/*db*

Keyword Patterns to Search

# Direct SQL construction
"SELECT.*FROM"           # SQL SELECT statements
"INSERT INTO"            # SQL INSERT
"UPDATE.*SET"            # SQL UPDATE
"DELETE FROM"            # SQL DELETE
"EXEC ", "EXECUTE "      # Stored procedure execution

# String concatenation in queries
"+ .*query"              # String concat with query variable
`${.*}`.*SELECT          # Template literals in SQL
f"SELECT, f"INSERT       # Python f-strings in SQL
"WHERE.*=.*'" + "        # String concat in WHERE clause
".format(.*)".*SELECT    # str.format() in SQL

# Language-specific database calls
"db.Query(", "db.Exec("              # Go database/sql
"sequelize.query(", ".rawQuery("     # Node.js Sequelize
"cursor.execute(", "connection.execute("  # Python DB-API
"$wpdb->query(", "->whereRaw("      # PHP WordPress/Laravel
"createNativeQuery(", "createQuery(" # Java JPA
"FromSqlRaw(", "ExecuteSqlRaw("      # C# Entity Framework

Semantic Patterns

  1. String concatenation — any variable concatenated into a string that is later passed to a database query function
  2. Template literal interpolation — variables embedded in SQL via template literals or f-strings
  3. ORM raw query methods — framework ORM methods that accept raw SQL strings
  4. Stored procedure calls — dynamic stored procedure name or parameter construction
  5. Query builder misuse — using .where() with raw strings instead of parameterized objects

Read the full file on GitHub · 202 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. 9d ago First seen · 202 lines · 24 tokens per session scan A 961ac2ee2b9f

Subscribe to this mod's changes

sc-sqli is a skill published in the GitHub repository ersinkoc/security-check (56 stars, last pushed 2mo ago), licensed MIT. It adds 24 tokens to every session and 2,227 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 2026-08-30.

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