# AGENTS.md — Build guide for Umso ## Project scope Create a small startup landing page from a product brief, edit sections, publish a static version and collect leads through a separate endpoint. Catalogue verdict: yes. The core loop is small enough for a capable coding agent to produce a useful local version in one sitting. For Umso, create and publish a clean startup landing page with a form and simple analytics. The hard boundary is template system, hosting, domains, and very low maintenance, plus editor polish, hosting, templates, and ecosystem. Use the implementation prompt below to define the deliverable. Complete each phase's acceptance checks before extending the scope. ## Working agreement - Inspect the repository and its existing instructions before choosing paths, dependencies or commands. Keep one coherent stack and explain changes to the proposed architecture. - Plan a vertical slice that accepts a real input and produces the useful output described below. Persist only the state the prompt calls for; respect memory-only and upstream-managed workflows. Use fixtures only when they are clearly labelled. - After scaffolding, document the actual install, development, check and build commands in README and keep them synchronized with the package or project manifest. Do not report commands as successful unless they ran. - Work in small steps. At handoff, list implemented flows, checks actually performed, remaining blockers, and any credentials or provider setup the owner must supply. - Do not publish, spend money, contact customers, delete source data or run irreversible migrations without the project owner's authorization. ## Prerequisites - Runtime and tools: TypeScript, React, a Node build process and versioned JSON content with static HTML/CSS output. - Before starting: Licensed assets, a user-owned static hosting target and sample desktop/mobile content; forms need a separately authenticated server endpoint. ## Stack and architecture - TypeScript, React, a Node build process and versioned JSON content with static HTML/CSS output - Data design: Store ProductFact, Section, CTA, PublishedRevision and Lead; generated copy references supplied facts and public builds cannot contain private lead records. - Setup: Licensed assets, a user-owned static hosting target and sample desktop/mobile content; forms need a separately authenticated server endpoint ## Security and data integrity - Keep drafts separate from the published manifest. Escape content, allowlist components and URLs, and publish a complete revision atomically with rollback to the preceding revision. - Start with a few coherent templates and accessible forms. Analytics and email are optional disclosed integrations, not automatic evidence of growth or conversion. - Keep secrets outside client bundles and exported projects; document what leaves the device and make retention/deletion controls visible. ## Agent implementation rules - Project rule — domain: Store ProductFact, Section, CTA, PublishedRevision and Lead; generated copy references supplied facts and public builds cannot contain private lead records. - Project rule — scope and recovery: Start with a few coherent templates and accessible forms. Analytics and email are optional disclosed integrations, not automatic evidence of growth or conversion. - Project rule — acceptance: Supply a brief without customer proof, generate a page and submit twice after a timeout; no testimonials are invented and only one lead is accepted. - Project rule — delivery: document real setup commands and permissions; do not claim a build, accuracy level, performance result or security certification that has not been demonstrated. ## Optional agent skills and references - Recommended skill: [frontend-design](https://github.com/anthropics/skills/blob/main/skills/frontend-design/SKILL.md) — compose the proposed responsive site sections with deliberate typography, spacing and honest content. Follow the maintainer's installation instructions and match its requirements to the chosen runtime. - Recommended skill: [seo-audit](https://github.com/coreyhaines31/marketingskills/blob/main/skills/seo-audit/SKILL.md) — review crawlability, metadata and evidence-based on-page findings without promising search rankings. Follow the maintainer's installation instructions and match its requirements to the chosen runtime. Read the linked SKILL.md and its dependencies before adding a skill. Select only the skills matching this project's runtime and task; their documentation does not supply API access, credentials or approval to perform external actions. Pin the reviewed revision where the tool supports it. Follow the chosen agent's documented project-level installation mechanism. ## Distribution ideas These are optional planning notes. Obtain the owner's approval before publishing or contacting anyone. - Demonstrate this working slice using synthetic or explicitly authorized non-sensitive examples: Create a small startup landing page from a product brief, edit sections, publish a static version and collect leads through a separate endpoint. - Share a synthetic example export and the acceptance walkthrough; keep real customer, health, financial and source data private: Supply a brief without customer proof, generate a page and submit twice after a timeout; no testimonials are invented and only one lead is accepted. - State the limits before asking someone to replace their existing tool: Start with a few coherent templates and accessible forms. Analytics and email are optional disclosed integrations, not automatic evidence of growth or conversion. ## Engineering roadmap 1. Phase 1 — Pin the working slice and create its example input: Create a small startup landing page from a product brief, edit sections, publish a static version and collect leads through a separate endpoint. Confirm setup: Licensed assets, a user-owned static hosting target and sample desktop/mobile content; forms need a separately authenticated server endpoint. 2. Phase 2 — Implement persistence and write-time invariants before decorating the UI: Store ProductFact, Section, CTA, PublishedRevision and Lead; generated copy references supplied facts and public builds cannot contain private lead records. 3. Phase 3 — Connect the working view to real saved state. Keep drafts separate from the published manifest. Escape content, allowlist components and URLs, and publish a complete revision atomically with rollback to the preceding revision. 4. Phase 4 — Expose the app-specific limits and recovery path in context: Start with a few coherent templates and accessible forms. Analytics and email are optional disclosed integrations, not automatic evidence of growth or conversion. 5. Phase 5 — Walk through this concrete acceptance case and preserve its exported evidence: Supply a brief without customer proof, generate a page and submit twice after a timeout; no testimonials are invented and only one lead is accepted. Finish the README and backup/restore instructions; report unfinished capabilities explicitly. ## Paid-product capabilities outside this build - template system, hosting, domains, and very low maintenance - large template marketplace - managed hosting and CDN - advanced CMS - commerce and agency workflows ## Implementation prompt Build the following focused alternative to Umso. Implement the focused workflow below first; the verdict is not evidence of a completed or production-certified build. WORKING SLICE Create a small startup landing page from a product brief, edit sections, publish a static version and collect leads through a separate endpoint. SETUP AND ARCHITECTURE Use TypeScript, React, a Node build process and versioned JSON content with static HTML/CSS output. Prerequisites: Licensed assets, a user-owned static hosting target and sample desktop/mobile content; forms need a separately authenticated server endpoint. Before integrating anything, record actual versions and permissions, plus model files or provider limits only where used, in the README; make unavailable dependencies visible rather than simulating success. DOMAIN MODEL AND INVARIANTS Store ProductFact, Section, CTA, PublishedRevision and Lead; generated copy references supplied facts and public builds cannot contain private lead records. IMPLEMENTATION CONTRACT Keep drafts separate from the published manifest. Escape content, allowlist components and URLs, and publish a complete revision atomically with rollback to the preceding revision. Provide an input/setup view, the main work view, and a review/export view appropriate to this workflow. Preserve the last saved state if a job or save fails. Include empty, loading, permission-denied, partial and retryable-error states. Log identifiers and error categories without secret values or unnecessary private content. APP-SPECIFIC BOUNDARY AND RECOVERY Start with a few coherent templates and accessible forms. Analytics and email are optional disclosed integrations, not automatic evidence of growth or conversion. ACCEPTANCE SCENARIO Supply a brief without customer proof, generate a page and submit twice after a timeout; no testimonials are invented and only one lead is accepted. Also reopen the app after an interrupted operation, confirm the saved record/export remains inspectable, and document the recovery action. These are implementation acceptance requirements, not a claim that this guide has been tested. DELIVERY Deliver a runnable repository with migrations or project-format versioning, a non-sensitive example, environment/permission setup, the exact manual acceptance steps, and a backup/export-and-restore walkthrough. Implement the working slice before optional integrations; list any deferred paid-product capabilities honestly. Do not add capabilities outside the working slice just to resemble the original product. PROJECT RULES FOR AGENTS.md Keep the domain invariants above executable at the write boundary. Propose scope changes before adding providers or permissions. Never fabricate source evidence, publish results, identity matches or successful delivery. Preserve user originals and require an explicit confirmation for destructive changes or external publication. ## Completion evidence Demonstrate the prompt's acceptance scenarios against the scoped workflow. Include setup from a clean checkout and failure recovery. Check persistence across restart and export/restore only for the state the prompt says to store; for memory-only tools, confirm that temporary content is discarded as specified. Record actual results and remaining limitations. A detailed plan alone does not establish a working replacement.