graphql-test

graphql-test is a skill for Claude Code, Codex from jinyimeng01/mastermind-bug-bounty. It costs 58 tokens per session (2,095 once invoked), scanned A, original, no licence file.

A security testing tool for GraphQL APIs, which are web interfaces that let clients request selected data fields in a single query.

In plain words
What is it for?
It tests schema discovery, field guessing, aliases, batched queries, deeply nested or cyclic queries, saved queries, field suggestions, and subscription access.
Why use it?
It helps uncover weaknesses in GraphQL features that can expose hidden fields, bypass limits, access other users’ data, or overload a server.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

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 skills/jinyimeng01/mastermind-bug-bounty/graphql_test
Any agent
npx skills add jinyimeng01/mastermind-bug-bounty --skill graphql_test
Clone the repo
git clone --depth 1 https://github.com/jinyimeng01/mastermind-bug-bounty

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-test

README.md
[![agentmods](https://agentmods.dev/badge/skills/jinyimeng01/mastermind-bug-bounty/graphql_test.svg)](https://agentmods.dev/skills/jinyimeng01/mastermind-bug-bounty/graphql_test)
Your own site
<a href="https://agentmods.dev/skills/jinyimeng01/mastermind-bug-bounty/graphql_test"><img src="https://agentmods.dev/badge/skills/jinyimeng01/mastermind-bug-bounty/graphql_test.svg" alt="Measured on agentmods" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,095 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. Scan, not verified.
Origin unknown 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 $0.00058 $0.02095
Opus 5 $0.00029 $0.01047
Sonnet 5 $0.00012 $0.00419
Haiku 4.5 $0.00006 $0.00210

Measured 6d ago against content hash c1de8ce0588c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

graphql-test scanned grade A with 2 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 6d 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.

Sends data to an external URLlowData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

resp = requests.post( "https://{target}/graphql",

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl POST https://{target}/graphql \
skills/graphql_test/SKILL.md · 305 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 6d ago First seen · 305 lines · 58 tokens per session scan A c1de8ce0588c

Subscribe to this mod's changes

graphql-test is a skill published in the GitHub repository jinyimeng01/mastermind-bug-bounty (57 stars, last pushed 2mo ago), with no licence file. It adds 58 tokens to every session and 2,095 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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