Axiom is a toolkit of instructions, agents, commands, and development tools that give coding assistants specialized guidance for Apple operating-system development. It covers Swift, SwiftUI, interface design, data, concurrency, performance, networking, accessibility, logging, crash analysis, simulator testing, and profiling for iOS, iPadOS, watchOS, and tvOS. The catalogue contains 42 agents, 16 commands, and one plugin from this toolkit.
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.
git clone --depth 1 https://github.com/CharlesWiltgen/AxiomWrote 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/commands/charleswiltgen/axiom/axiom-ui)<a href="https://agentmods.dev/commands/charleswiltgen/axiom/axiom-ui"><img src="https://agentmods.dev/badge/commands/charleswiltgen/axiom/axiom-ui/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/commands/charleswiltgen/axiom/axiom-ui"><img src="https://agentmods.dev/badge/commands/charleswiltgen/axiom/axiom-ui.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 | $0.00018 | $0.00360 |
| Opus 5 | $0.00009 | $0.00180 |
| Sonnet 5 | $0.00004 | $0.00072 |
| Haiku 4.5 | $0.00002 | $0.00036 |
Grade A, and why
axiom-ui 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 4d 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
Drive and Validate Simulator UI
xcui is not bundled with the Cursor plugin and has no Axiom MCP wrapper.
- Before UI automation, check
command -v xcui. If present, runxcui doctorand follow its external installation's documented workflow. - If
xcuiis absent, AXe may be used only for compatible pass-through verbs:tap,slider,type,swipe,drag,touch,gesture,button,key,key-sequence,key-combo, andscreenshot. Checkcommand -v axebefore using one of those verbs, use that verb's documented AXe arguments, and handleDEVELOPER_DIRexplicitly if AXe reports a SimulatorKit loading error; wrapper-only device auto-resolution is unavailable. - The
wait,assert,a11y,dialog,voiceover, andresizecapabilities require externalxcui. Ifxcuiis unavailable for one of these capabilities, stop that UI step and report that externalxcuiis required; do not substitute AXe or timing guesses. - If neither tool is available, stop UI automation and give the user setup guidance for an external xcui or AXe installation. Do not claim the Cursor plugin installed either tool.
- When UI automation is unavailable, continue with non-UI simulator and log checks that still answer the request, and label that result as degraded coverage.
- Treat simulator erase, delete, shutdown, and boot operations as state-changing actions and preserve the user's authorization boundary.
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.
- 4d ago First seen · 16 lines · 18 tokens per session scan A 4b524a67ca5d
axiom-ui is a command published in the GitHub repository CharlesWiltgen/Axiom (1,151 stars, last pushed yesterday), licensed MIT. It adds 18 tokens to every session and 360 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 2026-09-06.
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feature-build
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feature-test
Create all tests for an implemented feature - unit tests (ViewModel, UseCase, Repository), Compose UI tests, and E2E user flow tests.
xcuitest
Generate and run end-to-end tests with XCUITest. Creates test journeys using Page Object Model, runs tests, captures screenshots/videos, and manages flaky tests.