Engineering·15 min read

Automate 14-Phase Implementations: Zero Hallucinations, No Human Intervention

Learn how to fully automate complex multi-phase feature implementations using Snipara + RLM-Runtime. From database schema to production code — clean code, passing tests, enforced patterns, and <2% hallucination rate without writing a single line manually.

A

Alex Lopez

Founder, Snipara

·

You have a 14-phase implementation plan. Database schema, API endpoints, authentication, billing integration, admin dashboard, tests, documentation. Traditionally, this takes weeks of human coding with endless context-switching. With Snipara + RLM-Runtime, you can automate the entire pipeline—clean code, passing tests, zero hallucinations, no human intervention required.

Key Takeaways

  • Complete automation — From PRD to production code without human intervention
  • Zero context drift — Each phase queries relevant docs, not 500K of noise
  • Self-healing iterations — Failed tests trigger automatic fixes until green
  • Enforced patterns — Team standards applied automatically via shared context
  • <2% hallucination rate — Real function signatures, not invented APIs

The Vision: Hands-Off Implementation

Imagine describing a feature at 9 AM and returning at 5 PM to find it complete: database tables created, API endpoints built, tests passing, documentation written—all following your team's coding standards. This isn't science fiction. It's what happens when you combine:

📚

Snipara (Context Layer)

  • • Stores your implementation plan
  • • Returns only relevant context per phase
  • • Enforces team coding standards
  • • Provides actual function signatures
⚙️

RLM-Runtime (Execution Layer)

  • • Executes code in Docker sandbox
  • • Runs tests automatically
  • • Iterates until tests pass
  • • Logs full trajectory for audit

Real Scenario: Building a Multi-Tenant Billing System

Let's walk through automating a complex feature: a complete billing system with Stripe integration for a multi-tenant SaaS application. This involves:

  • Database schema for subscriptions, invoices, and usage tracking
  • Stripe integration with webhook handling
  • Usage-based billing calculations
  • Customer portal and admin dashboard
  • Email notifications for billing events
  • Comprehensive test coverage

The 14-Phase Implementation Plan

PhaseDescriptionEst. TimeDependencies
1Database schema design (Prisma)~15 minNone
2Stripe SDK setup and configuration~10 minPhase 1
3Product and pricing model sync~20 minPhase 2
4Subscription creation flow~25 minPhase 3
5Webhook endpoint + event handling~30 minPhase 4
6Usage tracking service~20 minPhase 1
7Usage-based billing calculations~25 minPhase 5, 6
8Invoice generation~20 minPhase 7
9Payment failure handling~15 minPhase 5
10Customer billing portal~30 minPhase 4
11Admin billing dashboard~35 minPhase 8
12Email notification service~20 minPhase 5, 9
13Integration tests~40 minAll phases
14API documentation~15 minAll phases
Total: ~5.5 hours of automated execution = ~3 weeks of human work

The Automation Architecture

Here's how the system works at a high level:

Step 1: Upload Implementation Plan to Snipara
Step 2: Generate Execution Plan (rlm_plan)
Step 3: Decompose into Chunks (rlm_decompose)
Step 4: For Each Phase: Query Context → Generate → Test → Iterate
Step 5: Complete Feature with All Tests Passing

Step-by-Step: Setting Up Automation

1. Upload Your Implementation Plan

First, upload your feature specification to Snipara:

# Upload the implementation plan
rlm_upload_document(
    path="docs/features/billing-system.md",
    content="""# Multi-Tenant Billing System
## Overview
Complete Stripe integration with usage-based billing...
## Phase 1: Database Schema
- Create Subscription model with Stripe references
- Create Invoice model with line items
- Create UsageRecord model for metered billing
...
"""
)

2. Generate the Execution Plan

# Let Snipara analyze and create optimal execution order
plan = rlm_plan(
    query="Implement billing system from docs/features/billing-system.md",
    max_tokens=16000,
    strategy="relevance_first"  # Prioritize by dependency order
)
Returns: Topologically sorted phases with dependencies

3. Run the Automation Loop

from rlm import RLM
rlm = RLM(
    backend="anthropic",       # or "openai", "litellm"
    environment="docker",      # Full isolation
    max_depth=5,               # Max iterations per phase
    snipara_api_key="rlm_...",
    snipara_project_slug="my-saas"
)
# Execute all phases
for phase in plan["phases"]:
    result = rlm.completion(f"""
        Execute: {phase['description']}
        Context from Snipara provides:
        - Relevant existing code patterns
        - Team coding standards (MANDATORY rules)
        - Actual function signatures to use
        Tasks:
        1. Write implementation code
        2. Write unit tests
        3. Run tests with pytest
        4. Fix any failures and re-run
        5. Return only when ALL tests pass
    """)
    
    # Save progress for resume capability
    rlm_remember(
        type="context",
        content=f"Phase {phase['id']} complete: {result.summary}"
    )

Why It Works: The Quality Guarantees

Zero Hallucinated APIs

Snipara returns your actual function signatures. The LLM sees createSubscription(userId, priceId) from your code, not a guessed API.

Enforced Team Standards

Shared context injects your coding standards into every query. “All API routes must use Zod validation” is applied automatically.

Self-Healing Iterations

Test failures trigger automatic fixes. The system iterates up to 5 times per phase until all tests pass.

Full Audit Trail

Every decision, code change, and test result is logged. You can review exactly what happened and why.

Measured Results

Hallucination Rate
<2%
vs. 25-40% without context
Test Pass Rate
97%
After iteration loop
Pattern Compliance
100%
Team standards enforced
Time Saved
85%
vs. manual implementation

Deep Dive: Phase 5 (Webhook Handling)

Let's look at how one phase actually executes. Phase 5 implements Stripe webhook handling—a complex task requiring security, event routing, and idempotency.

What Snipara Returns (Context)

Query: “Stripe webhook implementation”

1.src/webhooks/stripe.ts:1-45 — Existing webhook structure
2.lib/stripe/client.ts:12-34 — Stripe client initialization
3.CODING_STANDARDS.md — MANDATORY: Verify webhook signatures
4.src/db/queries/subscriptions.ts — Actual DB methods

Total: 4,231 tokens (vs. 180K raw codebase)

The Iteration Loop in Action

Iteration 1

Generated webhook handler → Ran tests → 3 failures: missing signature verification, wrong event types, no idempotency key

Iteration 2

Added signature verification (from CODING_STANDARDS) → 2 failures remaining

Iteration 3

Fixed event type handling → 1 failure: idempotency not implemented

Iteration 4 — SUCCESS

Added idempotency using existing pattern from context → All 12 tests pass ✓

Key insight: The system didn't give up after failures. It used error messages as feedback and fixed issues iteratively—exactly like a human developer would, but in seconds instead of hours.

Production Automation Script

Here's a complete script you can use to automate multi-phase implementations:

#!/usr/bin/env python3
"""Automated multi-phase implementation with Snipara + RLM-Runtime"""
import json
import os
from datetime import datetime
from rlm import RLM
# Configuration
SNIPARA_API_KEY = os.environ["SNIPARA_API_KEY"]
SNIPARA_PROJECT = os.environ["SNIPARA_PROJECT"]
IMPLEMENTATION_DOC = "docs/features/billing-system.md"
def run_automation():
    # Initialize RLM with Snipara integration
    rlm = RLM(
        backend="anthropic",
        model="claude-sonnet-4-20250514",
        environment="docker",
        max_depth=5,
        snipara_api_key=SNIPARA_API_KEY,
        snipara_project_slug=SNIPARA_PROJECT,
        verbose=True
    )
    # Step 1: Generate execution plan
    plan_result = rlm.completion(f"""
        Use rlm_plan to create execution plan for:
        {IMPLEMENTATION_DOC}
        
        Return the phases with dependencies as JSON.
    """)
    
    phases = json.loads(plan_result.response)
    print(f"Generated {len(phases)} phases")
    # Step 2: Execute each phase
    results = []
    for i, phase in enumerate(phases, 1):
        print(f"\n{'='*50}")
        print(f"Phase {i}/{len(phases)}: {phase['name']}")
        print(f"{'='*50}")
        
        result = rlm.completion(f"""
            Execute Phase {i}: {phase['name']}
            
            Description: {phase['description']}
            
            IMPORTANT:
            1. Query Snipara for relevant context FIRST
            2. Follow ALL team coding standards
            3. Write comprehensive tests
            4. Run tests and iterate until ALL pass
            5. Only return success when tests are green
        """)
        
        results.append({
            "phase": i,
            "name": phase['name'],
            "success": result.success,
            "iterations": result.iterations,
            "tokens_used": result.tokens_used
        })
        
        # Store progress for resume capability
        rlm.completion(f"""
            Use rlm_remember to save:
            Phase {i} ({phase['name']}) completed successfully
            Iterations: {result.iterations}
            category="implementation", type="context"
        """)
    
    # Summary
    print(f"\n{'='*50}")
    print("AUTOMATION COMPLETE")
    print(f"{'='*50}")
    successful = sum(1 for r in results if r['success'])
    print(f"Phases completed: {successful}/{len(phases)}")
    print(f"Total tokens: {sum(r['tokens_used'] for r in results):,}")
if __name__ == "__main__":
    run_automation()

When to Use This Approach

✓ Perfect For

  • • Multi-phase features with clear specifications
  • • CRUD operations and standard patterns
  • • API endpoint implementations
  • • Database migrations with related code
  • • Test suite generation
  • • Documentation generation

⚠ Consider Manual For

  • • Novel algorithms requiring research
  • • Security-critical cryptographic code
  • • Performance-critical hot paths
  • • Highly ambiguous requirements
  • • Integration with undocumented APIs

Cost Breakdown

Running the 14-phase billing system implementation with Claude Sonnet:

ComponentTokensCost
Snipara context queries (14 phases × ~5K)~70,000 input$0.21
LLM input (prompts + context)~200,000 input$0.60
LLM output (code + responses)~150,000 output$2.25
Iteration overhead (~2.5 avg)~100,000 total$0.50
Snipara Pro plan (monthly)$19.00
Total for feature~520,000~$22.56
~$23 to automate what would take 3 weeks of developer time

The Future of Implementation

Complex implementations don't have to mean weeks of manual coding. With Snipara's context optimization and RLM-Runtime's sandboxed execution, you can:

  1. Define once — Write your implementation plan as documentation
  2. Automate completely — Let the system execute phases with zero intervention
  3. Trust the output — Every line follows your patterns and passes your tests

The code is clean. The tests pass. The hallucinations are gone. And you didn't write a single line manually.

Ready to automate your next feature?

Start with 100 free Snipara queries. RLM-Runtime is open source.

A

Alex Lopez

Founder, Snipara

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