Borrowing it
Nothing to install: this file belongs to jbwashington/ebay-mcp. 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/jbwashington/ebay-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/jbwashington/ebay-mcpWrote 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/jbwashington/ebay-mcp/claude-md)<a href="https://agentmods.dev/instructions/jbwashington/ebay-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/jbwashington/ebay-mcp/claude-md.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 5.1 | $0.03746 | $0.03746 |
| Opus 5 | $0.01873 | $0.01873 |
| Sonnet 5 | $0.00749 | $0.00749 |
| Haiku 4.5 | $0.00375 | $0.00375 |
Grade A, and why
ebay-mcp CLAUDE.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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 521 lines — stays where its author put it; the contents beside it link to each section on GitHub.
eBay Listing Automation Plugin - Memory & Context
This document provides context for Claude Code when working with this project.
Project Identity
Name: eBay Listing Automation Plugin Type: Claude Code Plugin Purpose: Automate eBay listing creation, pricing research, fraud detection, and order fulfillment Primary Use Case: Listing clothing, sneakers, and accessories on eBay
Tech Stack
- Runtime: Bun (TypeScript)
- Integration: Model Context Protocol (MCP)
- APIs: eBay Developer API (Inventory, Browse, Fulfillment, Feedback)
- Authentication: OAuth 2.0 with Tailscale Funnel for HTTPS
- Deployment: Claude Code Plugin (local)
Project Structure
ebay-listing-automation/
├── .claude-plugin/plugin.json # Plugin manifest
├── agents/ # 5 specialized AI agents
├── commands/ # 10 slash commands
├── hooks/ # 4 automation hooks
├── scripts/ # Hook scripts
└── src/ # MCP server & libs
├── mcp-server/ # Main MCP server
├── lib/ # API clients & utilities
├── scripts/ # OAuth authentication
└── types/ # TypeScript definitions
Core Components
1. MCP Server (21 Tools)
Located in src/mcp-server/index.ts
Inventory Management:
ebay_create_inventory_item- Create/update inventoryebay_create_offer- Create draft listingebay_publish_offer- Publish to eBay
Search & Research:
ebay_search_by_image- Visual similarity searchebay_search_by_keyword- Text-based search
Order Fulfillment:
ebay_get_orders- Fetch order listebay_get_order- Get order detailsebay_create_shipping_fulfillment- Add tracking
Best Offer Management (Trading API):
ebay_get_best_offers- Get buyer offers on a listing (filter by status)ebay_respond_to_best_offer- Accept, decline, or counter a buyer Best Offer
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.
- 7d ago First seen · 521 lines · 3,746 tokens per session scan A 0bc17752d271
ebay-mcp CLAUDE.md is an instructions file published in the GitHub repository jbwashington/ebay-mcp (13 stars, last pushed 6mo ago), licensed MIT. It adds 3,746 tokens to every session, about $0.0187 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.
Other instructions, from other repositories
vibetags com-example-service-OrderService.instructions.md
Instructions for PIsberg/vibetags, covering copilot instructions for orderservice, rules for method calculatetax, rules for method processpayment, rules for method validateorder and context & focus.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).