AI agent that builds full features from written specifications

Built with Fine.dev?
Let's make sure it's production-ready.

Fine.dev is an AI developer agent that builds complete features from specifications. It interprets written specs, generates full implementations with tests across your codebase, and creates pull requests for review. We help non-technical founders identify and fix the issues AI tools leave behind.

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Common issues we find in Fine.dev code

These are real problems we see in Fine.dev projects during our audits — not hypotheticals.

highBugs

Spec interpretation may differ significantly from intent

Fine.dev builds exactly what the specification says, not what you meant. Ambiguous specs lead to technically correct implementations that miss the actual product requirement.

highSecurity

Cross-file changes may miss security implications

When Fine.dev generates features spanning multiple files, security-sensitive changes — new endpoints, auth checks, data access patterns — are spread across the PR without a consolidated security review surface.

mediumTesting

Generated tests may not cover real-world edge cases

Fine.dev writes tests for the happy path and obvious failure cases from the spec. Edge cases not explicitly mentioned — concurrent requests, null inputs, rate limits — are frequently untested.

mediumBugs

Cross-file changes introduce inconsistencies

Large implementations touching many files accumulate subtle inconsistencies — type assumptions that don't hold across modules, different error handling patterns in different files.

mediumPerformance

Performance not factored into spec-driven implementations

Fine.dev implements features to meet functional specs without considering production query patterns, data volumes, or latency requirements that aren't part of the specification.

mediumDeployment

No deployment configuration generated for new features

Features that require new environment variables, database migrations, or infrastructure changes don't include the deployment artifacts needed to ship them safely.

mediumCode Quality

Spec-driven code may not follow established project patterns

Fine.dev generates code that meets the spec but may use different architectural patterns, naming conventions, or service abstractions than what your team has established.

lowCode Quality

Dependency additions not coordinated with existing tech choices

When a spec requires functionality that could be served by an existing library in the project, Fine.dev may add a new dependency rather than reusing what's already there.

Start with a self-serve audit

Get a professional review of your Fine.dev project at a fixed price. Results reviewed by experienced engineers.

Security Scan

Black-box review of your public-facing app. No code access needed.

$19
  • OWASP Top 10 checks
  • SSL/TLS analysis
  • Security headers
  • Expert review within 24h
Get Started

Code Audit

In-depth review of your source code for security, quality, and best practices.

$19
  • Security vulnerabilities
  • Code quality review
  • Dependency audit
  • AI pattern analysis
Get Started
Best Value

Complete Bundle

Both scans in one package with cross-referenced findings.

$29$38
  • Everything in both products
  • Cross-referenced findings
  • Unified action plan
Get Started

100% credited toward any paid service. Start with an audit, then let us fix what we find.

How it works

1

Tell us about your app

Share your project details and what you need help with.

2

Get a clear plan

We respond in 24 hours with scope, timeline, and cost.

3

Launch with confidence

We fix what needs fixing and stick around to help.

Frequently asked questions

How do I write specs that produce good Fine.dev implementations?

Be explicit about edge cases, performance requirements, and error handling expectations. Include examples of the desired behavior. Vague specs produce working-but-wrong implementations. We can help you write effective spec templates.

Can SpringCode review Fine.dev pull requests before merge?

Yes. We review Fine.dev PRs for spec interpretation accuracy, security implications of cross-file changes, edge case coverage in tests, and fit with your project's architectural patterns.

What happens if Fine.dev misinterprets my specification?

You get a PR that passes review but doesn't solve the right problem. Our reviews catch misinterpretations early by verifying the implementation against the original intent, not just the spec text.

Can Fine.dev handle database migrations and deployment changes?

Fine.dev focuses on application code. Database migrations, environment variable documentation, and infrastructure changes need to be created separately. We fill this gap.

Is Fine.dev appropriate for security-sensitive features?

With additional review, yes. Security features need explicit spec coverage of threat models and access control requirements, plus careful human review of the generated auth and data access code before merging.

Get your Fine.dev app production-ready

Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.

Tell Us About Your App