Borrowing it
Nothing to install: this file belongs to phase-rs/phase. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/phase-rs/phase/main/.claude/skills/card-test/SKILL.mdgit clone --depth 1 https://github.com/phase-rs/phaseWrote 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/phase-rs/phase/card-test)<a href="https://agentmods.dev/skills/phase-rs/phase/card-test"><img src="https://agentmods.dev/badge/skills/phase-rs/phase/card-test/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/phase-rs/phase/card-test"><img src="https://agentmods.dev/badge/skills/phase-rs/phase/card-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00047 | $0.03108 |
| Opus 5.5 | $0.00019 | $0.01243 |
| Sonnet 5.5 | $0.00009 | $0.00622 |
| Haiku 4.5 | $0.00005 | $0.00311 |
Grade A, and why
card-test 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.
card-test — production-pipeline test recipes
Choose the production entry point that creates the behavior under test. The
builders in crates/engine/src/game/scenario.rs handle casting and activation
bookkeeping; assertions must still prove the intended branch and completion.
Reference ports that demonstrate the pattern:
crates/engine/tests/integration/chord_of_calling.rs— X-spell, convoke,final_waiting_for()boundary.crates/engine/src/game/casting_tests.rs—exsanguinate_*(life deltas, 2- and 3-player),vicious_rivalry_*(X-cost filter + zones),kozileks_command_modes_*(modal + X + multi-target).
Choose the production entry point
| Behavior claimed | Entry point and local example |
|---|---|
| Spell resolution | runner.cast(spell).resolve(); the cast recipe below |
| Activated ability | runner.activate(source, ability_index).resolve(); tests/integration/goblin_charbelcher.rs::activate_and_finish |
| ETB trigger | Cast the permanent so entry emits the event and queues the trigger; tests/integration/wedding_ring_etb_token_copy.rs::wedding_ring_etb_token_copy_is_opponent_controlled |
| Phase trigger | Set up before the phase, then advance through it with the runner; tests/integration/dark_confidant_upkeep.rs::dark_confidant_upkeep_loses_life_equal_to_revealed_card_mana_value |
| Choice / replacement / continuation | Enter the prompt through its producer, assert it, then submit the response with runner.act(GameAction::...); tests/integration/goblin_charbelcher.rs::nested_ordering_pauses_arrange_each_pile_separately and tests/integration/optional_replacement_decline_keeps_resident_drain.rs::alms_collector_tail_reaches_the_drawer_after_a_declined_nested_granted_dredge |
Example paths in this table are relative to crates/engine/. They illustrate
entry points, not every assertion a new test needs. For other events, use the
action that emits the event (combat declaration, zone change, etc.). Setting up
a battlefield is legitimate fixture setup; manually enqueueing the trigger or
pre-populating its remembered result does not test event delivery or binding.
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.
- 9d ago Changed · +41 lines · -54 tokens per session 224e0abb4ab5
- 11d ago Changed · +9 lines 28ebdd99e154
- 2mo ago First seen · 169 lines · 101 tokens per session scan A 83f3bab672e4
card-test is a skill published in the GitHub repository phase-rs/phase (312 stars, last pushed today), licensed Apache-2.0. It adds 47 tokens to every session and 3,108 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 2026-08-30.
Other skills, from other repositories
testing-rules
Testing standards — frameworks, the testable-logic trigger, golden/snapshot rules, mocking rules, and the test-author → testing-reviewer pipeline. Load for /add-tests and any change that touches testable logic.
author-contract
Shared write-side contract every domain AUTHOR imports — smallest-diff implementation, ground-first, validation gates, tests-are-blocking, and never-approve-your-own-work. The write-side mirror of token-efficiency. Load at the start of any implementation task.
coding-standards
General repo rules enforced by ESLint/TypeScript/CI — PRs-only, never bypass lint, import ordering, type imports, path privacy, commit format. Load for any code change.
anarlog
Query Anarlog meetings, notes, summaries, transcripts, participants, action items, and recurring history, or import a local recording. Use when a user asks about their Anarlog meeting data or needs meeting context for another task.
graphify-windows
Turn any folder of files into a navigable knowledge graph with community detection, an honest audit trail, and three outputs: interactive HTML, GraphRAG-ready JSON, and a plain-language GRAPHREPORT.md.
lessons
How to propose and query distilled lessons (the experiential memory). Only project-steward persists; every other agent proposes/queries. Use when you discover a durable lesson or need prior experience for the current task.