Using Cursor for Salesforce Development: Workflows That Work

Cursor as Your Salesforce IDE

Cursor brings AI into the same workspace where Salesforce developers already edit Apex, LWC, and metadata XML. With Salesforce Extension Pack installed, you retain org authorization, deploy-on-save options, Apex replay debugger, and LWC local preview — while gaining inline completion and agentic multi-file edits. Ranburg teams report 20–40% faster iteration on well-scoped stories when Cursor rules enforce platform conventions.

Project Setup: SFDX in Cursor

Clone or create an SFDX project: sf project generate --name myProject. Open the folder in Cursor. Authorize orgs via terminal: sf org login web --alias dev --set-default. Ensure sfdx-project.json and .forceignore are correct. Add .cursorignore to exclude node_modules, .sfdx, and large static resources from AI indexing — this improves response quality and protects irrelevant files from context windows.

AI Completions for Apex

When typing a new service class, let Tab-complete suggest method signatures, then use Cmd/Ctrl+K to instruct 'implement bulkified update for related Opportunities.' Cursor sees surrounding classes and tests. Always run: sf apex run test --code-coverage --result-format human. AI-generated tests may miss edge cases for trigger recursion or mixed DML scenarios.

Building LWC with Cursor Composer

Composer mode can create HTML, JS, and CSS files together — describe a datatable with inline edit wired to Apex. Mention lightning-datatable columns, @wire getRecord, and toast events. Preview with sf lightning dev component (where supported) or deploy to scratch org. Cursor respects module boundaries better when you @-mention existing components as style references.

Metadata and XML Edits

Profiles, permission sets, and custom objects involve verbose XML. Cursor helps regenerate package.xml manifests, fix merge conflicts in metadata, and draft Custom Metadata Type records. Validate with sf project deploy start --dry-run before production promotions.

Agent Mode for Refactors

Cursor agents can execute terminal commands — use cautiously on Salesforce projects. Good agent tasks: rename a utility class across files, add error logging to all @AuraEnabled methods, update API versions in meta.xml files. Bad agent tasks: deploy to production without review, delete metadata, or run destructive changes without backups. Require human approval on every git commit.

Team .cursorrules for Salesforce

Ranburg standard rules include: enforce with sharing on Apex classes unless documented exception; prefer Queueable over @future; use Selector pattern for SOQL; LWC must use SLDS tokens; no hardcoded IDs; all Integration Procedures must log correlation IDs. Store rules in the repo so every consultant's Cursor behaves consistently across engagements.

Debugging with AI Assistance

Paste anonymized debug log excerpts into chat with @logFile reference. Ask why CPU time exceeded limits. Cursor can suggest moving enrichment to asynchronous processing. Combine with Salesforce's Apex Profiler and Event Monitoring for production-grade diagnosis — AI suggestions are hypotheses, not gospel.

CI/CD Integration

Cursor edits still flow through Git, pull requests, and Copado/Gearset/standard sf deploy pipelines. Do not bypass code review because AI wrote the diff. Ranburg PR templates ask authors to confirm governor limit testing, security review for new @AuraEnabled endpoints, and updated documentation.

Pair Cursor with Ranburg's Apex Test Class Generator and Governor Limits Calculator tools for faster validation cycles.