manifest-yaml-cursorrules-prompt-file

manifest-yaml-cursorrules-prompt-file is a cursor rule for Cursor from PatrickJS/awesome-cursorrules. It costs 697 tokens per session, scanned A, original, CC0-1.0.

A set of instructions for building small demo backends with Manifest, using a YAML file to describe the app's data. It also defines package scripts, schema settings, and limits for entities and properties.

In plain words
What is it for?
Use it when creating demo applications with Manifest, YAML-based backend definitions, and seed or watch commands.
Why use it?
It gives the coding agent a clear structure for creating a valid, lightweight Manifest backend without adding unnecessary data models.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc). Also seen: mentions Cursor.

Good fit Use it when creating demo applications with Manifest, YAML-based backend definitions, and seed or watch commands.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/patrickjs/awesome-cursorrules/manifest-yaml-cursorrules-prompt-file
About the project

PatrickJS/awesome-cursorrules is a collection of Markdown rule files that give Cursor AI editor project-specific instructions about code, frameworks, workflows, and standards. Developers use it to find reusable guidance for shaping Cursor’s behavior in different kinds of software projects.

PatrickJS/awesome-cursorrules · 40,737 stars · on GitHub

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.

Clone the repo
git clone --depth 1 https://github.com/PatrickJS/awesome-cursorrules

Made for: Cursor.

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.

agentmods badge for manifest-yaml-cursorrules-prompt-file

README.md
[![agentmods](https://agentmods.dev/badge/rules/patrickjs/awesome-cursorrules/manifest-yaml-cursorrules-prompt-file.svg)](https://agentmods.dev/rules/patrickjs/awesome-cursorrules/manifest-yaml-cursorrules-prompt-file)
Your own site
<a href="https://agentmods.dev/rules/patrickjs/awesome-cursorrules/manifest-yaml-cursorrules-prompt-file"><img src="https://agentmods.dev/badge/rules/patrickjs/awesome-cursorrules/manifest-yaml-cursorrules-prompt-file.svg" alt="Measured on agentmods" height="20"></a>
Per session 697 This file is loaded in full into every session.
When invoked 697 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 $0.00697 $0.00697
Opus 5 $0.00349 $0.00349
Sonnet 5 $0.00139 $0.00139
Haiku 4.5 $0.00070 $0.00070

Measured 4d ago against content hash cd723d84c27e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

manifest-yaml-cursorrules-prompt-file 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.

rules/manifest-yaml-cursorrules-prompt-file.mdc · 69 lines

What it actually says

Prompt for Expert Manifest Developer

You are an assistant for app creation. You are going to use the backend Manifest. The apps you generate are light and for demo purposes: you not aim to provide all the data structure but instead showcase a variety of property types.

Code structure When asked to create a backend, execute the following actions:

  1. Install the manifest npm package
  2. Add the following scripts to pacakge.json: "manifest": "node node_modules/manifest/scripts/watch/watch.js" and "manifest:seed": "node node_modules/manifest/dist/manifest/src/seed/scripts/seed.js"
  3. Create the manifest/backend.yml file and add the manifest code to it.
  4. Add the redhat.vscode-yaml as recommendation in .vscode/extensions.json
  5. Configure yaml.schemas only with a schema URL or local schema file verified for the Manifest backend version used by the project.

Backend file On the manifest/backend.yml, follow those rules:

  • Strictly follow the Manifest JSON Schema shipped with the project or verified from the current Manifest backend documentation.
  • Start by addind a quick name to the app
  • Limit to 2 or 3 entities maximum
  • Limit to 4 properties maximum per entity
  • Try to showcase different property types
  • Only use validation properties once or twice
  • No entity should be called admin
  • Do not use authenticable entities
  • Add an emoji after each entity name, but do not use the emoji it on relationships references
  • Add a linebreak before each entity object
  • Each entity only appears once. Relationships goes just below the properties, do not repeat the entity name.
  • Do not use special characters. . Do not use middlewares, endpoints or hooks.
  • Use YAML abbreviated form for objects, with spaces. Example: { name: issueDate, type: date }
  • Do not add relationships to single entities
  • For relationships, use the short form. Ex: ' belongsTo: - Author'
  • Add policies. Most projects only have "read" public policies. Some projects have "create" public policies when anyone can post (contact forms submissions, comments, etc.)
  • If using the "choice" property type, use "options.values" property to list choices. Example: { name: type, type: choice, options: { values: ["Fire", "Water", "Grass"] } }
  • Do not add "seedCount" and "mainProp" to entities

Documentation Refer to the Manifest backend documentation that matches the project's installed version.

Example This is an example of the content of a backend.yml file: name: My pet app 🐾 entities: Owner: properties: - name - { name: birthdate, type: date }

Cat: properties: - name - { name: age, type: number } - { name: birthdate, type: date } belongsTo: - Owner

Homepage: nameSingular: Home content single: true properties: - title - { name: description, type: richText } - { name: cover, type: image }

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. 4d ago First seen · 69 lines · 697 tokens per session scan A cd723d84c27e

Subscribe to this mod's changes

manifest-yaml-cursorrules-prompt-file is a cursor rule published in the GitHub repository PatrickJS/awesome-cursorrules (40,737 stars, last pushed 3mo ago), licensed CC0-1.0. It adds 697 tokens to every session, about $0.0035 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 2026-09-03.