implement-e2e-tests

implement-e2e-tests is a skill for Claude Code from adobe/spacecat-api-service. It costs 38 tokens per session (1,593 once invoked), scanned A, original, Apache-2.0.

Guidance for writing end-to-end tests for API endpoints. End-to-end tests check a feature through the full running system, including its real database and service connections.

In plain words
What is it for?
Use it when adding or extending end-to-end coverage for spacecat-api-service endpoints, after checking existing unit, integration, and end-to-end tests.
Why use it?
It prevents slow, duplicate, or flaky tests by keeping only scenarios that lower-level unit or integration tests cannot prove.

Skill for Claude Code ✓ vendor

Written for Claude Code: installed under .claude/.

Good fit Use it when adding or extending end-to-end coverage for spacecat-api-service endpoints, after checking existing unit, integration, and end-to-end tests.

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Install with agentmods
npx agentmods add skills/adobe/spacecat-api-service/implement-e2e-tests
About the project

SpaceCat API Service is an HTTP API for working with SpaceCat data, including a server-side proxy for the Semrush AIO API and a PostgreSQL-backed data service. Developers and operators use it to access and run the Edge Delivery services data system.

adobe/spacecat-api-service · 10 stars · on GitHub

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 adobe/spacecat-api-service --skill implement-e2e-tests
Clone the repo
git clone --depth 1 https://github.com/adobe/spacecat-api-service

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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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.

agentmods 80×15 button for implement-e2e-tests

Your own site · 80×15
<a href="https://agentmods.dev/skills/adobe/spacecat-api-service/implement-e2e-tests"><img src="https://agentmods.dev/badge/skills/adobe/spacecat-api-service/implement-e2e-tests.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,593 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.01593
Opus 5.5 $0.00015 $0.00637
Sonnet 5.5 $0.00008 $0.00319
Haiku 4.5 $0.00004 $0.00159

Measured 1mo ago against content hash 6e2759ef1ea0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

implement-e2e-tests 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.

.claude/skills/implement-e2e-tests/SKILL.md · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implement E2E Tests

An e2e test earns its place only if it proves something no lower layer can. test/controllers/ mocks everything and can assert any branch cheaply; test/it/ runs the real DB/PostgREST stack with seeded, controllable personas. Both are cheaper and faster than e2e. If a scenario is provable at either layer, it belongs there, not here — repeating it in e2e just builds an ice-cream cone (top-heavy on the slow, flaky layer) instead of a pyramid.

Step 1: Map the feature and its existing coverage

Identify the endpoint set from the OpenAPI paths, src/routes/index.js, and the controller file(s) touched. Then locate what already tests them:

  • test/controllers/<feature>.test.js — unit, mocked
  • test/it/shared/tests/<feature>.js — integration, real Postgres/PostgREST
  • test/e2e/<feature>.e2e.js — e2e, if this is an enhancement to an existing feature. Read it in full before writing anything — supplement it, don't fork a parallel file.

Completion: you can point at the covering file (or "none exists yet") for every candidate scenario before triaging.

Step 2: Triage — keep only what only e2e can prove

Keep Why unit/IT can't prove it
This route's own auth wiring: one request without a session token, asserting the real deployed middleware rejects it Unit mocks auth; IT pre-mints valid tokens (test/it/shared/auth.js) and never calls a route unauthenticated
Real infra wiring: entitlement/product-access from live config, facsWrapper routing, CDN/Fastly behavior, cold start Mocked, or stood in for by the IT harness, everywhere else
One assembled consumer workflow per primary intent: the call sequence a UI feature or an AI agent would actually issue, asserting the end state a user cares about Neither layer chains calls the way a real consumer does
Discard Where it already lives
Per-field/branch 400s (missing param, wrong type, bad UUID, cap/limit boundaries) unit — cheap to enumerate exhaustively
Authorization matrix across roles/orgs (403 variants) IT — has multiple seeded personas; a live dev site usually gives you only one credential
Version-bump / optimistic-lock / set-difference arithmetic IT — proven against a real DB
Anything a sinon stub or esmock'd dependency already proves unit

Read the full file on GitHub · 110 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.

  1. 1mo ago First seen · 110 lines · 38 tokens per session scan A 6e2759ef1ea0

Subscribe to this mod's changes

implement-e2e-tests is a skill published in the GitHub repository adobe/spacecat-api-service (10 stars, last pushed 25d ago), licensed Apache-2.0. It adds 38 tokens to every session and 1,593 once invoked, about $0.0002 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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