CLAUDE.mdB

CLAUDE.md from darkworldcoder/market-mirror is a CLAUDE.md file: the standing instructions Claude Code reads in that repo.

Install it, pinned
mdr add darkworldcoder/market-mirror/CLAUDE.md@git:20261031.89ede0a

Pins git:20261031.89ede0a in mdr.lock. Pin the fingerprint instead.

Audit grade
B, 13 of 14 checks passed
Kind
CLAUDE.md file
Repository
darkworldcoder/market-mirror
Path
CLAUDE.md
Versions recorded
11
Latest version
git:20261031.89ede0a, committed Oct 31, 2026
First version recorded
Oct 18, 2026
Size
25,705 bytes
Repository stars
10
License
AGPL-3.0

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# MarketMirror (MiroFish engine) — operating guide for Claude

MarketMirror is a marketing and sales simulation and prediction tool. You give it a brief, ads, messages, prices, a launch plan or a pitch; it builds diverse simulated buyers (interview-grounded personas with communities), lets them scroll realistic feeds, post and argue on simulated social platforms, answers a buyer survey, rehearses a sales pitch, and writes a plain-language report with a go / iterate / no-go decision. The installable skill is `plugin/skills/market-mirror/SKILL.md`; the MCP server is `plugin/skills/market-mirror/scripts/mcp_server.py`.

Under the hood it is the MiroFish engine (knowledge graph -> LLM agents -> OASIS social simulation) running headless on Claude. Drive the Flask backend (port 5001) with `backend/claude_cli/mirofish.py` and show the user the self-contained HTML dashboard it exports.

## 0. Fastest path

```bash
backend/claude_cli/start_server.sh
python backend/claude_cli/mirofish.py quickstart            # asks 9 plain questions, also sets up .env / the API key
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add darkworldcoder/market-mirror/CLAUDE.md@sha256:d348f7b05a545126

The line at the top of this page pins the label git:20261031.89ede0a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_qvybxvw4fcymzse3.svg)](https://markdownregistry.com/a/art_qvybxvw4fcymzse3)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 11 versions of this file, between Oct 18, 2026 and Oct 31, 2026, about one every day.

versioncommittedcommitsizeaudit
git:20261031.89ede0a latest2026-10-31 89ede0a 25,705 BB view · diff
git:20261031.3dd9c7d2026-10-31 3dd9c7d 25,071 BB view · diff
git:20261031.caf28282026-10-31 caf2828 24,503 BB view · diff
git:20261031.62d93bb2026-10-31 62d93bb 23,832 BB view · diff
git:20261031.a8d20bd2026-10-31 a8d20bd 22,605 BB view · diff
git:20261029.76698632026-10-29 7669863 19,097 BB view · diff
git:20261018.f9042b52026-10-18 f9042b5 18,484 BB view · diff
git:20261018.f4209542026-10-18 f420954 17,958 BB view · diff
git:20261018.ca964fc2026-10-18 ca964fc 17,469 BB view · diff
git:20261018.69949d42026-10-18 69949d4 16,882 BB view · diff
git:20261018.49ee3532026-10-18 49ee353 16,081 BB view

Audit of the latest version

B  13 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: No link to a raw IP address (matched: http://127.0.0.1:5055)
  • pass: Size between 200 bytes and 200 KB (25705 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No script tag

Starting a new one? Use a template for CLAUDE.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

darkworldcoder/market-mirror · 10 stars · license AGPL-3.0 · pushed 2026-11-01 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qvybxvw4fcymzse3
GET https://markdownregistry.com/api/v1/resolve?ref=darkworldcoder/market-mirror/CLAUDE.md
GET https://markdownregistry.com/api/v1/blob/d348f7b05a545126cac59197ad691150df4072cbafe94e5a3203edcd0cf3da55

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: what a CLAUDE.md file is · keeping AGENTS.md and CLAUDE.md in sync · which agent file does what.

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darkworldcoder/market-mirror · plugin/skills/planning/SKILL.md · Build a campaign plan with audiences, positioning, channels, funnel goals, budget assumptions and executable test specs.
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