graphql

graphql is a skill for Claude Code, Codex from sanjaysaini1952/BugBounty-Arsenal. It costs 0 tokens per session (330 once invoked), scanned A, original, MIT.

A security-testing guide for GraphQL, an API query system where clients request specific fields. It checks whether the schema, data, and operations are exposed or usable without proper controls.

In plain words
What is it for?
Use it to test GraphQL introspection, field suggestions, batched requests, queries for other users' data, unauthenticated mutations, and query-depth limits.
Why use it?
It helps find excessive schema visibility, missing authentication, weak access checks, batching that bypasses limits, and deeply nested queries that may overload a server.

Skill for Claude CodeCodex

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

Good fit Use it to test GraphQL introspection, field suggestions, batched requests, queries for other users' data, unauthenticated mutations, and query-depth limits.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sanjaysaini1952/bugbounty-arsenal/graphql
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 sanjaysaini1952/BugBounty-Arsenal --skill graphql
Clone the repo
git clone --depth 1 https://github.com/sanjaysaini1952/BugBounty-Arsenal

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 graphql

README.md
[![agentmods](https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/graphql/github.svg)](https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/graphql)
Your own site
<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/graphql"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/graphql/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 graphql

Your own site · 80×15
<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/graphql"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/graphql.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 330 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 $0.00000 $0.00330
Opus 5 $0.00000 $0.00165
Sonnet 5 $0.00000 $0.00066
Haiku 4.5 $0.00000 $0.00033

Measured 11d ago against content hash 813cd262303a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

graphql 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 11d 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/hunting/graphql/SKILL.md · 39 lines

What it actually says

GraphQL Security Testing Skill — 6 Test Cases

Load when: GraphQL, introspection, GraphQL injection, batching.

202. Introspection query (easy)

Send {__schema{types{name,fields{name,args{name}}}}}. Report full schema disclosure.

203. GraphQL batching attack (medium)

Send [{query1}, {query2}, ...] in single request. Report if batching bypasses rate limiting.

204. GraphQL field suggestion (easy)

Send {user(name:"admin"){id}}. If response suggests correct field names, report information disclosure.

205. GraphQL IDOR (medium)

Query other users' data by changing id parameter: user(id: 2){email,name}. Report unauthorized access.

206. GraphQL mutation without auth (medium)

Send mutation (create user, change password) without authentication. Report missing auth checks.

207. GraphQL query depth attack (hard)

Send deeply nested query: {user{friends{friends{friends{...}}}}}. Report if no depth limiting causes DoS.


GraphQL Testing Queries

# Introspection
{__schema{types{name,fields{name,args{name,type{name}}}}}}

# Field Suggestion
{user(name:"admin"){id,email}}

# Batching
[{query:"{user(id:1){name}}"},{query:"{user(id:2){name}}"}]

# Mutation
mutation{createUser(input:{name:"test",email:"[email protected]"}){id}}
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. 11d ago First seen · 39 lines · 0 tokens per session scan A 813cd262303a

Subscribe to this mod's changes

graphql is a skill published in the GitHub repository sanjaysaini1952/BugBounty-Arsenal (2 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 330 tokens. 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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