competition-graphql-rpc-drift

competition-graphql-rpc-drift is a skill for Codex from Saprophytic-seattle561/reverse-skill. It costs 114 tokens per session (639 once invoked), scanned A, a copy of competition-graphql-rpc-drift, MIT.

A specialized security-analysis guide for capture-the-flag exercises involving GraphQL and other remote procedure call interfaces. It compares declared API contracts with the code that handles requests.

In plain words
What is it for?
Use it to inspect GraphQL schemas, persisted queries, RPC manifests, OpenAPI descriptions, generated clients, request shapes, and contract-to-handler mismatches in an authorized sandbox.
Why use it?
It helps reveal hidden, outdated, or privileged operations caused by differences between schemas, generated clients, manifests, and live handlers.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit Use it to inspect GraphQL schemas, persisted queries, RPC manifests, OpenAPI descriptions, generated clients, request shapes, and contract-to-handler mismatches in an authorized sandbox.

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Install with agentmods
npx agentmods add skills/saprophytic-seattle561/reverse-skill/competition-graphql-rpc-drift
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 Saprophytic-seattle561/reverse-skill --skill competition-graphql-rpc-drift
Clone the repo
git clone --depth 1 https://github.com/Saprophytic-seattle561/reverse-skill

Made for: 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 competition-graphql-rpc-drift

README.md
[![agentmods](https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-graphql-rpc-drift/github.svg)](https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-graphql-rpc-drift)
Your own site
<a href="https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-graphql-rpc-drift"><img src="https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-graphql-rpc-drift/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 competition-graphql-rpc-drift

Your own site · 80×15
<a href="https://agentmods.dev/skills/saprophytic-seattle561/reverse-skill/competition-graphql-rpc-drift"><img src="https://agentmods.dev/badge/skills/saprophytic-seattle561/reverse-skill/competition-graphql-rpc-drift.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 114 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 639 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 100% copy Near-identical to another mod 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 $0.00114 $0.00639
Opus 5 $0.00057 $0.00319
Sonnet 5 $0.00023 $0.00128
Haiku 4.5 $0.00011 $0.00064

Measured 10d ago against content hash a6e8e2d54d79, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

competition-graphql-rpc-drift 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 10d 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.

Origin

This is a copy

100% identical to competition-graphql-rpc-drift — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CTF-Sandbox-Orchestrator/competition-graphql-rpc-drift/SKILL.md · 51 lines

How it starts

The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Competition Graphql Rpc Drift

Use this skill only as a downstream specialization after $ctf-sandbox-orchestrator is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to $ctf-sandbox-orchestrator first.

Use this skill when the hard part is matching declared contracts with live handlers to find hidden, stale, or privileged operations.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Collect the declared contract surface first: schema, manifest, generated client, persisted query map, or OpenAPI spec.
  2. Record actual request shapes, operation names, variables, method, path, and auth context before mutating anything.
  3. Compare declared contract, generated client behavior, and live handler behavior side by side.
  4. Preserve one accepted operation and one drifted or hidden operation with the smallest delta.
  5. Reproduce the smallest contract-to-handler mismatch that proves the decisive branch.

Workflow

1. Map The Declared Contract Surface

  • Record GraphQL schema, introspection output, persisted query ids, RPC manifests, generated clients, or OpenAPI documents that define the intended surface.
  • Note versioned endpoints, client-only guards, hidden enums, optional fields, and operation naming conventions.
  • Keep document source and generation path tied to the observed requests.

2. Prove Live Handler Behavior

  • Capture the real request and response pairs, including operation name, variables, headers, cookies, and status.
  • Compare client-side validation, schema expectations, and live handler normalization or fallback behavior.
  • Record hidden operations, stale fields, undocumented methods, or handler-only branches that still execute.

3. Reduce To The Decisive Drift Path

  • Compress the result to the smallest sequence: declared contract -> actual request -> handler branch -> resulting capability.
  • State clearly whether the decisive drift lives in generated client assumptions, persisted query mapping, schema version skew, RPC manifest mismatch, or handler-side hidden logic.
  • If the task shifts into generic JWT, OAuth, or queue behavior after acceptance, hand off to the tighter specialized skill.

Read the full file on GitHub · 51 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 10d ago First seen · 51 lines · 114 tokens per session scan A a6e8e2d54d79

Subscribe to this mod's changes

competition-graphql-rpc-drift is a skill published in the GitHub repository Saprophytic-seattle561/reverse-skill (1 stars, last pushed today), licensed MIT. It adds 114 tokens to every session and 639 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to competition-graphql-rpc-drift, differing in 0 lines, and is treated as a copy.

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