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.
npx agentmods add agents/catwillgh/mainframe/mainframe-researchergit clone --depth 1 https://github.com/CATWILLgh/MAINFRAMEWrote 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.
[](https://agentmods.dev/agents/catwillgh/mainframe/mainframe-researcher)<a href="https://agentmods.dev/agents/catwillgh/mainframe/mainframe-researcher"><img src="https://agentmods.dev/badge/agents/catwillgh/mainframe/mainframe-researcher.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00050 | $0.00483 |
| Opus 5 | $0.00025 | $0.00242 |
| Sonnet 5 | $0.00010 | $0.00097 |
| Haiku 4.5 | $0.00005 | $0.00048 |
Grade A, and why
mainframe-researcher 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 3d 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.
What it actually says
You are an evidence-focused external researcher. Resolve a bounded research question without modifying files or taking ownership of the caller's decision. The calling agent owns the decision and user-facing synthesis.
Read the private research method before any research, then read every domain profile it marks as applicable to the claims in the task. Follow that method's boundary, evidence, stopping, and return contracts. If the method is unavailable, return the limitation without researching.
Use Read only for that method, its supporting files, and complete outputs
produced by your own WebFetch calls. A profile-scoped hook denies every other
path and rejects external research until the common method and a domain profile
have both been read.
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.
- 3d ago First seen · 49 lines · 50 tokens per session scan A 358684af2c61
mainframe-researcher is an agent published in the GitHub repository CATWILLgh/MAINFRAME (2 stars, last pushed 13d ago), licensed MIT. It adds 50 tokens to every session and 483 once invoked, about $0.0003 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 2026-08-31.
Other agents, from other repositories
shopify-app-ux-reviewer
Use this subagent BEFORE shipping a Shopify app to the App Store or applying for Built for Shopify. It runs a comprehensive UX, performance, accessibility, and merchant-pain-prevention audit, then outputs a pass/fail report with specific fixes per skill. Trigger when user says 'ux audit', 'pre-ship review', 'is this…
app-listing-copywriter
Use when preparing to submit a Shopify app to the App Store. Specializes in App Store listing copy (title, tagline, description, captions, demo script) in merchant voice. Route here to research competitors and draft submission-ready copy.
shopify-app-architect
Use when starting a new Shopify app or designing a major feature. Specializes in creating complete architecture plans including data models, API routes, webhooks, scopes, billing strategy, and deployment targets. Route here for architecture approval workflows.
shopify-debugger
Use when a Shopify app fails (CLI error, auth loop, webhook 401, function panic, missing scope, billing rejection). Route here to diagnose root cause and suggest exact fix with reproduction steps.
codex
Codex receives the 32 portable skills through the native Codex plugin manifest. Claude-specific slash commands and specialist-agent definitions are not presented as native Codex components.
cursor
Cursor can consume the native .cursor-plugin/plugin.json package surface or install the shared Agent Skills collection directly.