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 apideck-libraries/api-skills --skill ebaygit clone --depth 1 https://github.com/apideck-libraries/api-skillsWrote 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/apideck-libraries/api-skills/ebay)<a href="https://agentmods.dev/skills/apideck-libraries/api-skills/ebay"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/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.
<a href="https://agentmods.dev/skills/apideck-libraries/api-skills/ebay"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/ebay.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 | $0.00067 | $0.02004 |
| Opus 5.5 | $0.00027 | $0.00802 |
| Sonnet 5.5 | $0.00013 | $0.00401 |
| Haiku 4.5 | $0.00007 | $0.00200 |
Grade A, and why
ebay scanned grade A with 1 finding 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 15d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl 'https://unify.apideck.com/connector/connectors/ebay' \ This is a copy
81% identical to bigcommerce — 131 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
eBay (via Apideck)
Access eBay through Apideck's Ecommerce unified API — one of 17 Ecommerce connectors that share the same method surface. Code you write here ports to Shopify, BigCommerce, Shopify (Public App) and 13 other Ecommerce connectors by changing a single serviceId string. Apideck handles auth, pagination, rate limiting, and retries so you don't write per-tenant eBay plumbing.
Beta connector. eBay is currently in beta on Apideck. Expect partial resource coverage and occasional mapping gaps. Always verify coverage (see below) and fall back to the Proxy API for unsupported operations.
Quick facts
- Apideck serviceId:
ebay - Unified API: Ecommerce
- Auth type: oauth2
- Status: beta
- Gotchas: page
- eBay docs: https://developer.ebay.com
- Homepage: https://www.ebay.com/
At a glance
- Implementation difficulty: moderate — Self-Service OAuth Keyset + Production Activation Requirement
- Vendor partnership required: no (eBay Developers Program) — Joining the eBay Developers Program gives you sandbox and production keysets for the Sell APIs this connector calls.
- Apideck-managed credentials: not available — You register your own eBay keyset.
- Account type required: An eBay seller account holding the listings and orders to sync.
- Consumer access level: The account owner signs in to eBay and grants read access to their selling data.
- Sandbox: available (signup) — It returns no orders and none can be created through the API, so eBay advises testing on production with a seller account that has test listings.
- Costs: eBay publishes no API access fee. The Stores resource needs an active eBay store subscription on the seller's account.
- Rate limits: Default daily quotas: 100,000 calls on the Fulfillment API order resource, 5,000 on the Trading API; higher after eBay's Application Growth Check.
- Authentication: Authorization Code flow; eBay uses a RuName in place of a redirect URL.
- Webhooks: No webhooks - orders, listings and the store are read on request.
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.
- 15d ago Changed · +22 lines c55b5d07f6a3
- 1mo ago First seen · 132 lines · 67 tokens per session scan A 996dcae69485
ebay is a skill published in the GitHub repository apideck-libraries/api-skills (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 67 tokens to every session and 2,004 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). It is 81% identical to bigcommerce, differing in 131 lines, and is treated as a copy.
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