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 sei-newbear/xp-harness --skill e2e-api-wiremockgit clone --depth 1 https://github.com/sei-newbear/xp-harnessWrote 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/sei-newbear/xp-harness/e2e-api-wiremock)<a href="https://agentmods.dev/skills/sei-newbear/xp-harness/e2e-api-wiremock"><img src="https://agentmods.dev/badge/skills/sei-newbear/xp-harness/e2e-api-wiremock/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/sei-newbear/xp-harness/e2e-api-wiremock"><img src="https://agentmods.dev/badge/skills/sei-newbear/xp-harness/e2e-api-wiremock.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 | $0.00085 | $0.00512 |
| Opus 5.5 | $0.00034 | $0.00205 |
| Sonnet 5.5 | $0.00017 | $0.00102 |
| Haiku 4.5 | $0.00009 | $0.00051 |
Grade A, and why
e2e-api-wiremock 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
API E2E の流儀 (WireMock)
api/test 配下の E2E は、API を実際に動かし、外部依存を WireMock でモックして、エンドポイントの振る舞いを仕様書として検証する。
外部 API モックは「全パラメータ」を検証する
外部 API をモックするとき、モックのリクエストマッチ（または記録リクエストの検証）は、その外部 API の仕様書 (api/docs/) に載っている全パラメータを対象にする。URL や一部の識別子といった主要パラメータだけでマッチさせて済ませない。
理由: 一部のパラメータしか見ないと、API が誤った内容（項目の欠落・値の誤り）を外部へ送ってもテストが通ってしまい、「外部 API に意図どおりのリクエストを送れているか」を検証できない。仕様書の全項目が正しく送られることまで verify して初めて、E2E として意味を持つ。
モックの対象は仕様書を出典にする
マッチ・検証するパラメータは思いつきで決めず、対応する外部 API の仕様書 (api/docs/<api>.md) を参照して全項目を洗い出す。
モック定義とテストの置き場
- spec は
api/test/<シナリオ名>.e2e.test.ts - WireMock の mappings は
api/wiremock/mappings/配下
テスト独立性
- 各テストは単独で完結させる。前提となる状態はテスト内で自分で用意する
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 · 27 lines · 85 tokens per session scan A 145392477170
e2e-api-wiremock is a skill published in the GitHub repository sei-newbear/xp-harness (9 stars, last pushed 1mo ago), licensed MIT. It adds 85 tokens to every session and 512 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 2026-08-31.
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