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 skills add madguyevans-creator/resale-agent-skill-hub --skill broker-cardgit clone --depth 1 https://github.com/madguyevans-creator/resale-agent-skill-hubWrote 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/skills/madguyevans-creator/resale-agent-skill-hub/broker-card)<a href="https://agentmods.dev/skills/madguyevans-creator/resale-agent-skill-hub/broker-card"><img src="https://agentmods.dev/badge/skills/madguyevans-creator/resale-agent-skill-hub/broker-card/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/skills/madguyevans-creator/resale-agent-skill-hub/broker-card"><img src="https://agentmods.dev/badge/skills/madguyevans-creator/resale-agent-skill-hub/broker-card.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 | $0.00078 | $0.00610 |
| Opus 5 | $0.00039 | $0.00305 |
| Sonnet 5 | $0.00016 | $0.00122 |
| Haiku 4.5 | $0.00008 | $0.00061 |
Grade A, and why
broker-card 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 11d 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
broker-card: Generate, Review, and Publish Listings
Generates platform-specific listing cards, collects schedule+fuse settings, and auto-publishes on user confirmation.
Workflow
Phase 1: Card Generation
For each target platform, generate a formatted listing card:
┌─────────────────────────────────────┐
│ 🛍️ 闲鱼 Xianyu 上架卡片 │
├─────────────────────────────────────┤
│ 📝 标题: [platform-optimized] │
│ 📂 分类: [platform category path] │
│ 💰 价格: ¥XXX │
│ 📋 描述: [platform-tone adapted] │
│ 🏷️ 标签: #tag1 #tag2 #tag3 │
│ ⚠️ 成色: Grade X — [detail] │
└─────────────────────────────────────┘
Phase 2: Schedule + Shield (MANDATORY before publishing)
- Price shield: Unbreachable floor price. This MUST be set via
broker-fusebefore publishing. The publish script validates: if no floor is set, publishing is blocked. - Repricing interval: How often to re-check prices (default 7 days)
Explain the trade-off: higher floor = more profit per sale but slower; lower floor = faster liquidity.
Phase 3: Publish (floor-gated)
- Floor validation: script checks
listing.fuse_price > 0andlisting.current_price >= listing.fuse_price. Blocked otherwise. - User says "发布" or "confirm"
- Script auto-publishes to each platform using stored session
- Each publish event is logged to the audit trail (
audit_logger.log_publish) - Each listing URL is saved to state manager
- System scheduler is registered for repricing checks
Platform Adaptations
| Platform | Tone | Title Limit |
|---|---|---|
| 闲鱼 Xianyu | Casual, authentic, community | 30 chars |
| 转转 Zhuanzhuan | Semi-formal, inspection-report | 40 chars |
| eBay | Professional, keyword-dense | 80 chars |
| Depop | Lifestyle, aesthetic | 60 chars |
Script
python3 scripts/publish.py --item-id <id> --action generate # Generate cards
python3 scripts/publish.py --item-id <id> --action publish # Publish all
What ships with it
1 file 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.
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.
- 11d ago First seen · 57 lines · 0 tokens per session scan A bb3e28b435a0
broker-card is a skill published in the GitHub repository madguyevans-creator/resale-agent-skill-hub (94 stars, last pushed 3mo ago), licensed MIT. It adds 78 tokens to every session and 610 once invoked, about $0.0004 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 2026-08-30.
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