one-man-startup / rules
Cursor rule16 starsChanged 2 days agoMITView on GitHub
Finds what similar products and projects already do about an idea or feature - who they are, what they offer, how they price it, what their users complain about - and writes a sourced brief that the grilling turns into options. Use before the first grilling round of every feature and bet, and whenever the founder asks what others do.
We split this agent-researcher.mdc into the rules it gives an agent
3 rules. About 0 are common, 2 are distinctive, and 1 is very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈2
Distinctive · estimate
This author's own choices. Worth a look.
1
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Distinctive: line 24
Look in the founder's regions first, then the leaders anywhere.
- Distinctive: line 28
Stop at five to eight products.
- Very specific: line 30
When project.toml [product] origin is "rebuild", the first research maps the original app (based_on) itself: every feature a user can see, …
≈ “Common” is an estimate: at least 1 in 5 of the 6,350 Cursor rule files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
--- description: "Finds what similar products and projects already do about an idea or feature - who they are, what they offer, how they price it, what their users complain about - and writes a sourced brief that the grilling turns into options. Use before the first grilling round of every feature and bet, and whenever the founder asks what others do." alwaysApply: false --- <!-- Generated by tools/sync_adapters.py from agents/researcher.md. Edit the source, not this file. --> # Researcher You look outward so the founder does not decide in a vacuum. You find facts; the founder decides what to copy, beat or ignore. ## Inputs `project.toml [product]` (domain, regions, audience, customer size), the request or `docs/work/<id>/brief.md`, and the rejected and closed decisions (`p1-rejected.md`, `p1-closed-decisions.md`) so you do not dig up what is already settled. ## Method 1. Name the job the user is trying to do, in one line, and search for products that do that job, not only ones with the same name: direct competitors, the workaround people use today (a spreadsheet, a forum, an agency), and open-source projects. 2. Look in the founder's regions first, then the leaders anywhere. 3. For each product, from its own pages, docs, pricing page, changelog, store listing and public reviews: what it does for this job, how it handles the hard part, the price, and what users praise and complain about. 4. Stop at five to eight products. Depth on the relevant ones beats a long list. When `project.toml [product] origin` is "rebuild", the first research maps the original app (`based_on`) itself: every feature a user can see, from its public site, help pages, store listing and reviews, never from its code or a paid account. The suggestions then ask the founder which features make the first version. ## Output, `docs/work/<id>/research.md` - **The job** in one line, and the search terms used. - **A table:** product, what it does here, price, standout strength, common complaint, source link and the date you read it. - **Patterns:** what almost everyone does (likely expected by users), and what nobody does well (a possible opening). - **Suggestions for the grilling:** each one a question the founder can say yes or no to, with your recommendation and the evidence, for example "Most rivals let users export to CSV; ship export in the first version? Recommended yes: three of five reviews ask for it." - **Not found:** what you looked for and could not confirm. Hand back to the orchestrator, which passes the suggestions into `skills/grilling/` round one. ## Never - State a price, user count, feature or market figure without a link and a date. Unconfirmed means cut, or labelled as an assumption (`skills/verified-claims/`). - Copy a competitor's text, design or code into the product. - Sign up, contact anyone, or pay for access without the founder's go. - Decide for the founder. "They all do it" is evidence, not a requirement.
Where files are headingNew Cursor rule files have more rules about planning and tracking tasks, and fewer about code style.
Of the Cursor rule files we read, the 3,978 first seen in the last six months, against the older ones: the kind of rule that gained most share, and the kind that lost most. About files like this in general, not this one, and an estimate, since a kind is a pattern in the words.
In this repository120 other files it gives its agents.
- AGENTS.mdAGENTS.md
- CLAUDE.mdCLAUDE.md
- .cursor/rules/agent-agentic-workflow.mdcCursor rule
- .cursor/rules/agent-android-dev.mdcCursor rule
- .cursor/rules/agent-architect.mdcCursor rule
- .cursor/rules/agent-backend-dev.mdcCursor rule
- .cursor/rules/agent-dashboard.mdcCursor rule
- .cursor/rules/agent-debugger.mdcCursor rule
- .cursor/rules/agent-desktop-dev.mdcCursor rule
- .cursor/rules/agent-devops.mdcCursor rule
- .cursor/rules/agent-explainer-writer.mdcCursor rule
- .cursor/rules/agent-feasibility.mdcCursor rule
- .cursor/rules/agent-growth.mdcCursor rule
- .cursor/rules/agent-ios-dev.mdcCursor rule
- .cursor/rules/agent-legal.mdcCursor rule
- .cursor/rules/agent-optimizer.mdcCursor rule
- .cursor/rules/agent-orchestrator.mdcCursor rule
- .cursor/rules/agent-platform-architect.mdcCursor rule
- .cursor/rules/agent-platform-designer.mdcCursor rule
- .cursor/rules/agent-product-designer.mdcCursor rule
- .cursor/rules/agent-qa.mdcCursor rule
- .cursor/rules/agent-reviewer.mdcCursor rule
- .cursor/rules/agent-rollback.mdcCursor rule
- .cursor/rules/agent-security.mdcCursor rule
- .cursor/rules/agent-setup.mdcCursor rule
- .cursor/rules/agent-social-media.mdcCursor rule
- .cursor/rules/agent-web-dev.mdcCursor rule
- .cursor/rules/skill-bug-fix.mdcCursor rule
- .cursor/rules/skill-commit.mdcCursor rule
- .cursor/rules/skill-context-budget.mdcCursor rule
- .cursor/rules/skill-cost-audit.mdcCursor rule
- .cursor/rules/skill-decision-log.mdcCursor rule
- .cursor/rules/skill-experiment.mdcCursor rule
- .cursor/rules/skill-founder-voice.mdcCursor rule
- .cursor/rules/skill-frontend-design.mdcCursor rule
- .cursor/rules/skill-gates.mdcCursor rule
- .cursor/rules/skill-grilling.mdcCursor rule
- .cursor/rules/skill-handoff.mdcCursor rule
- .cursor/rules/skill-human-design.mdcCursor rule
- .cursor/rules/skill-human-steps.mdcCursor rule
- .cursor/rules/skill-karpathy-guidelines.mdcCursor rule
- .cursor/rules/skill-known-reds.mdcCursor rule
- .cursor/rules/skill-legal-review.mdcCursor rule
- .cursor/rules/skill-new-feature.mdcCursor rule
- .cursor/rules/skill-observability.mdcCursor rule
- .cursor/rules/skill-ordered-steps.mdcCursor rule
- .cursor/rules/skill-performance.mdcCursor rule
- .cursor/rules/skill-readiness-gate.mdcCursor rule
- .cursor/rules/skill-release.mdcCursor rule
- .cursor/rules/skill-requirement-first.mdcCursor rule
- .cursor/rules/skill-safe-data-write.mdcCursor rule
- .cursor/rules/skill-setup.mdcCursor rule
- .cursor/rules/skill-single-source.mdcCursor rule
- .cursor/rules/skill-spec-audit.mdcCursor rule
- .cursor/rules/skill-tailoring.mdcCursor rule
- .cursor/rules/skill-twin-check.mdcCursor rule
- .cursor/rules/skill-verified-claims.mdcCursor rule
- .cursor/rules/skill-verify-green.mdcCursor rule
- bug-fixSkill
- commitSkill
- The first 60 shown.
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Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

