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 sherifkozman/uicontract --skill skillgit clone --depth 1 https://github.com/sherifkozman/uicontractWrote 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/sherifkozman/uicontract/skill)<a href="https://agentmods.dev/skills/sherifkozman/uicontract/skill"><img src="https://agentmods.dev/badge/skills/sherifkozman/uicontract/skill.svg" alt="Measured on agentmods" 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 | $0.00048 | $0.01781 |
| Opus 5 | $0.00024 | $0.00890 |
| Sonnet 5 | $0.00010 | $0.00356 |
| Haiku 4.5 | $0.00005 | $0.00178 |
Grade A, and why
uic 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 6d 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 — 233 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI Contracts for Agent Automation
UI Contracts makes web app UIs machine-readable with stable hierarchical IDs, so agents can find, target, and interact with any interactive element by name instead of fragile selectors.
Quick Start
npx uicontract scan ./src -o manifest.json
npx uicontract name manifest.json -o manifest.json
npx uicontract find "login" --json
npx uicontract describe <agent-id> --json
npx uicontract list --type button --json
npx uicontract diff old.json new.json --json
Core Workflow
1. Discover
Check for an existing manifest.json in the project root. If none exists, generate one:
npx uicontract scan ./src -o manifest.json
npx uicontract name manifest.json -o manifest.json
2. Find
Search for elements by description. Fuzzy matching is enabled by default:
npx uicontract find "pause subscription" --json
npx uicontract find "pase subscribtion" --json # fuzzy match still finds it
npx uicontract find "billing" --type button --json
3. Target
Use the agentId from the find result to target the element in the browser.
agent-browser:
# Scoped snapshot to find the element ref:
agent-browser snapshot -s '[data-agent-id="settings.billing.pause-subscription.button"]'
# Returns: - button "Pause subscription" [ref=e1]
# Interact using the ref:
agent-browser click @e1
CSS selector (any tool):
[data-agent-id="settings.billing.pause-subscription.button"]
Playwright MCP: Launch with --test-id-attribute=data-agent-id, then use ref values from the accessibility snapshot.
See references/browser-tool-bridge.md for all supported tools.
4. Verify
Compare the current manifest against a baseline to detect breaking changes:
npx uicontract diff baseline.json current.json --json
Exit code 1 means breaking changes were found.
Commands
Discovery
scan -- Discover interactive elements in source code.
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 6d ago First seen · 233 lines · 48 tokens per session scan A 919543019781
uic is a skill published in the GitHub repository sherifkozman/uicontract (4 stars, last pushed 3mo ago), licensed MIT. It adds 48 tokens to every session and 1,781 once invoked, about $0.0002 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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