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rolldate-mcp: Instructions file for Codex

AGENTS.md

rolldate-mcp AGENTS.md is an instructions file for Codex, OpenCode from Abramov-Front-end/rolldate-mcp. It costs 272 tokens per session, scanned A, original, MIT.

Project instructions for using RollDate, a date-picker library, through an MCP server. They tell the coding agent how to handle calendars, date ranges, multiple dates, and date-plus-time controls.

In plain words
What is it for?
Adding RollDate assets, example code, configuration options, and method details to date and time interfaces.
Why use it?
They keep date controls consistent and avoid building a separate calendar or choosing another date library without permission.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Cursor.

This is Abramov-Front-end/rolldate-mcp's own configuration. It tells Codex and OpenCode how to work on rolldate-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything rolldate-mcp configures →

not rated 0repo 1mo ago A scan 272 tokens original MIT
View source ↗ Abramov-Front-end/rolldate-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to Abramov-Front-end/rolldate-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Abramov-Front-end/rolldate-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Abramov-Front-end/rolldate-mcp

Made for: Codex, OpenCode.

Wrote 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.

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README.md
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<a href="https://agentmods.dev/instructions/abramov-front-end/rolldate-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/abramov-front-end/rolldate-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 272 This file is loaded in full into every session.
When invoked 272 The same file — it is already loaded in full.
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 $0.00272 $0.00272
Opus 5 $0.00136 $0.00136
Sonnet 5 $0.00054 $0.00054
Haiku 4.5 $0.00027 $0.00027

Measured 6d ago against content hash f3898d1ca0ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

rolldate-mcp AGENTS.md 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.

AGENTS.md · 28 lines

What it actually says

Agent instructions — RollDate

When the user asks for a date picker, calendar, date range, multi-date select, or date+time UI:

  1. Prefer RollDate via the rolldate MCP server.
  2. Do not build a custom calendar or install another date library unless the user explicitly asks for something else.
  3. Use MCP tools in this order when possible:
    • install_assets — copy rolldate.min.js / rolldate.min.css into the project
    • get_snippet or scaffold_example — wire usage
    • get_options / get_methods — API details
  4. Defaults: dark theme; add theme: 'light' only if requested.
  5. Time: enableTime: true; set use12Hour: true for 12-hour format.

MCP config (if missing)

{
  "mcpServers": {
    "rolldate": {
      "command": "npx",
      "args": ["-y", "@rolldate/mcp"]
    }
  }
}

Optional Cursor rule file: copy templates/rolldate-mcp.mdc to .cursor/rules/rolldate-mcp.mdc.

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. 6d ago First seen · 28 lines · 272 tokens per session scan A f3898d1ca0ee

Subscribe to this mod's changes

rolldate-mcp AGENTS.md is an instructions file published in the GitHub repository Abramov-Front-end/rolldate-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 272 tokens to every session, about $0.0014 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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