assess-testing

A procedure for choosing which tests a feature needs, from fast unit tests to integration, external-service, and end-to-end tests. It uses tiers so testing matches the feature's risk and dependencies.

In plain words
What is it for?
Use it to plan tests for user-visible changes, data storage, migrations, background jobs, APIs, third-party services, and critical user journeys.
Why use it?
It prevents teams from either skipping important tests or spending time on tests that add little value.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/leifericf/agentic-sdk/assess-testing
Any agent
npx skills add leifericf/agentic-sdk --skill assess-testing
Clone the repo
git clone --depth 1 https://github.com/leifericf/agentic-sdk

Made for: Claude Code, Codex.

Per session 11 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 389 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00011 $0.00389
Opus 5 $0.00005 $0.00195
Sonnet 5 $0.00002 $0.00078
Haiku 4.5 $0.00001 $0.00039

Measured 2d ago against content hash 669507bcacb1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

assess-testing 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 2d 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/assess-testing/SKILL.md · 41 lines

What it actually says

assess-testing

Define the testing strategy (Tier 0/1/2). Declarative (what to test, not which framework); fast feedback first; right-sized, not maximal.

Procedure

  1. Read the dispatched inputs: the Gherkin spec, feature scope, and technical context (architecture, integrations, data flows).
  2. Tier 0 (required for all user-visible changes): unit tests for core logic, deterministic fakes or mocks for dependencies, contract tests at API boundaries; fast and isolated, seconds.
  3. Tier 1 (when applicable): required when the feature touches persistence, migrations, background jobs, or integration boundaries; containerized or local deterministic integration tests with real or test-container dependencies; minutes.
  4. Tier 2 (only when needed): required only when correctness depends on third-party behavior you cannot simulate; sandbox or external-dependency tests; allow retry and quarantine; on-demand before major releases.
  5. Define an E2E strategy only when the product has user-visible flows and a journey suite exists or is being introduced; focus on critical journeys.
  6. Set testing targets: local and CI loop under about five minutes; Tier 0 every commit; Tier 1 when integration-affecting chunks land; Tier 2 on-demand before releases.

Boundaries

Owns the test-tier strategy. assess-observability owns signals; plan-feature owns folding the result into the plan. Reached by plan-feature's fan-out.

Return

One EDN map: {:tier-0 {...} :tier-1 {:required ... :reason ...} :tier-2 {...} :e2e <str|nil> :goals {...}}.

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. 2d ago First seen · 41 lines · 11 tokens per session scan A 669507bcacb1

Subscribe to this mod's changes

assess-testing is a skill published in the GitHub repository leifericf/agentic-sdk (5 stars, last pushed 14d ago), licensed MIT. It adds 11 tokens to every session and 389 once invoked, about $0.0001 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 2026-08-31.

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