A command-line tool for managing eBay listings and seller activity through eBay's APIs. It supports listings, messages, offers, category lookups, and selected selling operations.

Use it to list or revise items, read seller messages and offers, look up categories and item details, and work with eBay selling data.

It lets scripts and agents handle common eBay work without manually navigating seller tools or constructing API requests. It can also target a sandbox for testing.

social-ebay — Skill for Claude Code by isaacrowntree

Install

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.

Any agent

npx skills add isaacrowntree/claude-social-skills --skill social-ebay

Clone the repo

git clone --depth 1 https://github.com/isaacrowntree/claude-social-skills

Made for: Claude Code.

Or install social, the plugin that ships this one along with the rest of its 10 skills.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/isaacrowntree/claude-social-skills/social-ebay/github.svg)](https://agentmods.dev/skills/isaacrowntree/claude-social-skills/social-ebay)

Your own site

<a href="https://agentmods.dev/skills/isaacrowntree/claude-social-skills/social-ebay"><img src="https://agentmods.dev/badge/skills/isaacrowntree/claude-social-skills/social-ebay/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/isaacrowntree/claude-social-skills/social-ebay"><img src="https://agentmods.dev/badge/skills/isaacrowntree/claude-social-skills/social-ebay.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,155 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00072	$0.01155
Opus 5.5	$0.00029	$0.00462
Sonnet 5.5	$0.00014	$0.00231
Haiku 4.5	$0.00007	$0.00115

Measured 1mo ago against content hash 4477bc9149e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

social-ebay 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 1mo 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.

skills/social-ebay/SKILL.md · 132 lines

How it starts

The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.

eBay: list, revise, messages, offers, categories (Trading, Auth'n'Auth) and any Sell REST API (OAuth).

Run: social ebay <command> (installed via bun link in this repo, or bun run /path/to/claude-social-skills/src/cli.ts ebay …). Add --dry-run before any command to print the request instead of sending it.

Credentials

EBAY_AUTH_TOKEN

Auth'n'Auth user token for the Trading API (listing, messages, offers). EBAY_CLIENT_ID + EBAY_CLIENT_SECRET add category/specifics lookups (app-only token, no sign-in). Add EBAY_RUNAME and run social auth login ebay only for the user-scoped Sell REST APIs. EBAY_MARKETPLACE (default EBAY_AU), EBAY_SANDBOX=1 optional.

Check what is present with social auth status ebay; store a value with social auth set ebay <KEY> <value> (OS keyring, else ~/.config/social/.env); run the interactive flow with social auth login ebay. Docs: https://developer.ebay.com/develop/apis

API description this wrapper is built from

openapi: https://developer.ebay.com/api-docs/master/sell/inventory/openapi/3/sell_inventory_v1_oas3.json (vendored: the host blocks non-browser fetches). Refresh with bun run gen; CI fails if upstream changes.

Commands

Every command accepts --json (raw JSON) and --jq <expr> (filter the JSON with jq).

`social ebay api <callName>`

call any Trading API operation with the XML body (Auth'n'Auth)

  --body <xml>               XML body inside the <CallName>Request element (default "")
  --input <file>             read the XML body from a file or - for stdin
  --site <id>                eBay site id (default from EBAY_MARKETPLACE)

`social ebay me`

the authenticated seller (GetUser)

`social ebay selling`

your active listings (GetMyeBaySelling)

  -n, --max <n>              per page (default "50")

`social ebay item <itemId>`

one listing in full (GetItem)

`social ebay messages`

recent buyer messages (GetMyMessages)

  --days <n>                 look back (default "7")

Read the full file on GitHub · 132 lines

Changes

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.

1mo ago First seen · 132 lines · 0 tokens per session scan A 4477bc9149e1

Subscribe to this mod's changes

social-ebay is a skill published in the GitHub repository isaacrowntree/claude-social-skills (4 stars, last pushed 1mo ago), licensed MIT. It adds 72 tokens to every session and 1,155 once invoked, about $0.0003 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 2026-09-19.

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