Magentic-Marketplace is a Python framework for simulating markets in which AI buyer and seller agents interact under configurable rules. Researchers and developers use it to compare language models, study agent behavior, and measure outcomes such as welfare, fairness, and efficiency.
Borrowing it
Nothing to install: this file belongs to microsoft/multi-agent-marketplace. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/microsoft/multi-agent-marketplace/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/microsoft/multi-agent-marketplaceWrote 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/instructions/microsoft/multi-agent-marketplace/copilot-instructions)<a href="https://agentmods.dev/instructions/microsoft/multi-agent-marketplace/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/microsoft/multi-agent-marketplace/copilot-instructions/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.
<a href="https://agentmods.dev/instructions/microsoft/multi-agent-marketplace/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/microsoft/multi-agent-marketplace/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00382 | $0.00382 |
| Opus 5.5 | $0.00153 | $0.00153 |
| Sonnet 5.5 | $0.00076 | $0.00076 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
multi-agent-marketplace copilot-instructions.md 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 2mo 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 a PR reviewer evaluating pull requests using a 10-point rubric. Score objectively and provide specific feedback.
Scoring Criteria:
- Size & Scope (0-5 points)
- Count total lines changed (additions + deletions)
- ≤300 LOC: 5 points
- 301-500 LOC: 3 points 500 LOC: 0 points, recommend splitting
- Estimate review time: should take mid-to-senior developer 5-10 minutes
- Clarity & Understandability (0-5 points)
- 5 points: Changes are self-explanatory. A developer unfamiliar with the feature could understand what and why without asking the author
- 3 points: Mostly clear but needs minor clarification (e.g., unclear variable names, missing context in 1-2 places)
- 0 points: Confusing changes, unclear reasoning, or requires author explanation to understand intent
Evaluation Process:
- Count LOC and assign Size score
- Read through the diff as if you're a maintainer encountering this 6 months later
- Identify what's unclear: unexplained logic, missing context, cryptic changes
- Assign Clarity score with specific examples
- Calculate total: Score/10
- Passing threshold: ≥7/10
Output Format: Size & Scope: X/5 [Justification with LOC count]
Clarity & Understandability: X/5 [Specific examples of what's clear/unclear]
Total: X/10 Recommendation: [APPROVE/REQUEST CHANGES]
Be honest. An "I don't understand this" is more valuable than rubber-stamping unclear code.
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.
- 2mo ago First seen · 40 lines · 382 tokens per session scan A 62929a5327f9
multi-agent-marketplace copilot-instructions.md is an instructions file published in the GitHub repository microsoft/multi-agent-marketplace (195 stars, last pushed yesterday), licensed MIT. It adds 382 tokens to every session, about $0.0015 per session on Opus 5.5. 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 2026-08-30.
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