Discover why Lovable AI misunderstands complex features and learn how to structure requests clearly with best practices in Lovable.

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The model misunderstands complex feature requests because the requests are often ambiguous, underspecified, or depend on hidden runtime context (secrets, external APIs, existing state), and because Lovable’s chat-first environment can’t run a terminal to confirm runtime behavior — so the AI must guess missing details and makes pragmatic assumptions that sometimes diverge from what you meant.
Ambiguity and missing constraints — the AI fills gaps when you don’t specify edge cases, inputs, outputs, or success criteria.
Paste any of these prompts into Lovable chat to make the project add clarification tooling and runtime guards so future complex requests are less likely to be misinterpreted.
// Create files and tests that implement a clarifier and wire it to the API endpoint.
// File: src/ai/clarifier.ts
export function analyzeFeatureRequest(text, projectFiles) {
// // Return array of clarifying questions if we detect missing items.
const questions = [];
// // Simple heuristic examples:
if (!/auth|login|session/i.test(text)) {
questions.push('Should this feature require user authentication?');
}
if (!/error|failure|edge case/i.test(text)) {
questions.push('What should happen on failures or edge cases?');
}
// // Add more heuristics based on projectFiles (routes, db models).
return questions;
}
// File: src/routes/api/feature-request.ts
import { analyzeFeatureRequest } from '../../ai/clarifier';
// // When a request comes in, return clarifying questions if any.
export async function postFeatureRequest(req, res) {
const text = req.body.text;
const projectFiles = {}; // // Lovable will provide file context automatically in chat edits.
const questions = analyzeFeatureRequest(text, projectFiles);
if (questions.length) {
return res.json({ clarify: true, questions });
}
// // Otherwise continue with normal implementation flow.
return res.json({ clarify: false });
}
// File: tests/clarifier.test.ts
// // Add unit tests that assert that missing auth or failure cases produce questions.
// Create a schema and code that validates incoming feature specs against required fields.
// File: .lovable/feature-schema.json
{
// // Schema lists required info types that the clarifier checks for.
"requiredFields": ["acceptanceCriteria", "auth", "externalApis", "migrations"]
}
// File: src/tools/featureValidator.ts
import fs from 'fs';
const schema = JSON.parse(fs.readFileSync('.lovable/feature-schema.json', 'utf8'));
export function validateFeatureSpec(spec) {
const missing = [];
for (const f of schema.requiredFields) {
if (!spec[f]) missing.push(f);
}
return missing;
}
// File: src/routes/api/feature-request.ts
// // Integrate validateFeatureSpec: if missing, return list and prompt clarifier.
// Create utils that surface missing Secrets and instruct using Lovable Secrets UI.
// File: src/utils/requireSecrets.ts
export function requireSecrets(envKeys) {
const missing = envKeys.filter(k => !process.env[k]);
if (missing.length) {
throw new Error(
// // This message is safe to show in Preview and tells the developer to use Lovable Secrets UI.
`Missing environment secrets: ${missing.join(', ')}. Set them with the Lovable Secrets UI before publishing.`
);
}
return true;
}
// Update server entrypoint (e.g., src/server.ts) to call requireSecrets(['DATABASE_URL']) at startup.
Notes and constraints
This prompt helps an AI assistant understand your setup and guide you through the fix step by step, without assuming technical knowledge.
Create a small, repeatable structure: add a repository issue template for feature requests, a short docs page that explains the exact fields you expect (motivation, user story, acceptance criteria, risks, mockups), and a set of copyable request prompts (one-liners and detailed templates) saved in the repo so teammates can paste them into Lovable. Keep each template consistent and short — title, one-sentence summary, why it matters, example user story, and concrete acceptance criteria — so Lovable (and reviewers) can act without back-and-forth.
Paste this prompt into Lovable to create files that enforce a clear feature-request structure and short guidance for teammates.
// Create .github/ISSUE_TEMPLATE/feature_request.md
// Create docs/feature-requests.md
// Update README.md to link to docs/feature-requests.md
Please create the following files and contents exactly.
Create file: .github/ISSUE_TEMPLATE/feature_request.md
Content:
// Feature request template for GitHub Issues
---
name: Feature request
about: Use this template to propose a new feature or improvement.
---
**Title**
_A short, imperative title_
**Summary**
_A one-sentence description of the feature._
**Why**
_Why does this matter? business or user impact._
**User story**
_As a <type of user>, I want <capability>, so that <benefit>._
**Acceptance criteria**
- _Concrete, testable outcomes (short bullet list)._
**Design / Mock**
_Link or attach mockups or a quick ASCII sketch._
**Notes / Risks**
_Points about performance, privacy, or migration._
Create file: docs/feature-requests.md
Content:
// Guidance for writing feature requests in this repo
How to write a useful feature request
Quick request templates (copy into a new issue)
Add a short README link to docs/feature-requests.md:
Update README.md: add a single line under contribution links: "See docs/feature-requests.md for our feature request template and examples."
<h3>Provide copyable Lovable prompts teammates can paste (keeps requests consistent)</h3>
<p>Paste this prompt into Lovable to add a file with ready-to-paste request text examples and short instructions for teammates.</p>
// Create docs/feature-request-templates.md
// This file holds copyable templates teammates can paste into Lovable's chat or GitHub issue body
Create file: docs/feature-request-templates.md
Content:
// Copyable templates
One-line (fast triage)
Title: [short]
Summary: [one sentence]
Why: [business/user impact]
Acceptance: [one measurable outcome]
Full (copy into a new issue or Lovable chat)
Title: [short]
Summary: [one sentence]
Why: [impact + metric]
User story: As a [user], I want [capability], so that [benefit].
Acceptance criteria:
```
If you want in-app submissions to create GitHub issues, ask Lovable to add a simple API endpoint and frontend form, and set a GitHub token via the Lovable Secrets UI. Add the token as GITHUB_ISSUE_TOKEN and repository owner/name as GITHUB\_REPO. If your app framework differs, tell Lovable your stack so it creates the correct serverless file.
After you paste any of the above prompts into Lovable, use Preview to review file diffs, then Publish or sync to GitHub. That gives you a lightweight, consistent feature-request structure that avoids vague asks and reduces back-and-forth.
Keep feature requests small, explicit, and break them into implementable phases: provide a clear user story, acceptance criteria, exact file-level changes, required secrets/integrations, and a concrete test/preview plan — then paste the prompts below into Lovable to get an actionable plan or automatic code edits.
Give Lovable a compact user story, precise acceptance criteria, the data flow (client → server → third party), the exact files to change or create, any required Secrets (use Lovable Secrets UI), and a clear Preview test plan. Ask Lovable to implement in small phases (phase 1 = minimal viable flow; phase 2 = enhancements) so changes are reviewable in Chat Mode and Preview.
// Paste this into Lovable to create a well-structured feature request
// Replace bracketed text with specifics for your feature.
Title: [Short feature title]
User story:
// As a [user role], I want to [capability] so that [benefit].
Acceptance criteria:
// - [Action] results in [observable outcome]
// - [Form submission] writes to [src/db/models/... or endpoint] with these fields: [...]
// - UI shows [success state / error messages] in these locations: [file/path:line context]
Files to change/create:
// - update src/pages/[Page].tsx in the form handler and UI
// - create src/api/[feature]/handler.ts for server logic
// - update src/components/[Widget].tsx to include new button in the <header> block
Data flow:
// Client: src/pages/[Page].tsx -> POST /api/[feature]
// Server: src/api/[feature]/handler.ts -> calls third-party [service]
// Persistence: update src/db/[model].ts or call Supabase at supabase/functions/[name]
Secrets (use Lovable Secrets UI):
// - SAVE secret name: [SERVICE_API_KEY] with description: [used for ...]
// Do not include keys in code; use process.env.[SERVICE_API_KEY]
Preview test plan:
// - Use test account: [email]
// - Steps: 1) go to /[path] 2) fill fields with [data] 3) click [button]
// - Expected: [200 response], UI shows [message], DB row created with [field values]
Phase plan:
// Phase A: minimal flow (UI + server stub + env secret + Preview)
// Phase B: validations, retries, monitoring
Branch name: feature/[short-title]
PR description: Implement [short-title] – includes UI, API handler, and tests.
// Paste this into Lovable when you want Lovable to implement changes directly.
// Be explicit about file edits; Lovable will create diffs/patches in Chat Mode.
Task: Implement Phase A of [short feature title]
Make these changes:
// 1) Create src/api/[feature]/handler.ts
// // POST handler receives {fieldA, fieldB}, validates, calls third-party, returns 201 with {id}
// 2) Update src/pages/[Page].tsx
// // Add form in the <main> block and submission that POSTs to /api/[feature]
// 3) Update src/components/Toast.tsx to show success and error messages in the top-right
// 4) Add unit test file tests/api/[feature].test.ts with requests asserting 201 and error paths
Secrets:
// - Use Lovable Secrets UI to add [SERVICE_API_KEY]. Do not hardcode keys.
// - After secrets are set, run Preview.
Preview instructions:
// - Open Preview, sign in as [test user], go to /[path], perform the flow with [sample data].
// - Capture any validation errors and return them in the Preview logs.
Acceptance criteria to verify in Preview:
// - Form submits successfully and returns a 201 with JSON {id}.
// - A toast appears saying "Created" and a new DB row (or Supabase record) exists with the submitted data.
If a CLI or DB migration is required:
// - Prepare a Git branch and PR with a clear commit message and note "outside Lovable: run migrations".
// - Label tasks that require terminal as: outside Lovable (terminal required)
// Paste this when you need Lovable to prepare a Git export and note terminal-only steps.
// Lovable will create the branch and files; you or CI must run these steps outside Lovable.
Task: Prepare Git branch for [feature] and include migration notes
Actions:
// - Create branch feature/[short-title] and commit all changes.
// - Open a PR with title and body containing migration + deploy steps.
Outside Lovable (terminal required) steps to list in PR:
// - Run DB migrations: [command, e.g., pnpm prisma migrate deploy] // outside Lovable
// - Build backend functions if needed: [command] // outside Lovable
// - Run local tests: [command] // outside Lovable
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