best-prd-template

📗 TECHNICAL REQUIREMENTS DOCUMENT (TRD) TEMPLATE

Developer-Friendly | Architecture-Driven | Agent-Executable

1. Document Control

Project Name:
Version:
Author(s):
Technical Lead:
Status:
Created Date:
Last Updated:

2. Technical Scope

System boundaries
Interfaces covered
Environment assumptions

3. System Architecture

3.1 Architecture Diagram

(Attach or link)

3.2 Deployment Model

Cloud / On-prem / Hybrid
Containers / Serverless

4. Component Breakdown

Component Responsibility Interfaces Technology ———– —————- ———— ————

5. API Specifications

For each endpoint:

Endpoint:
Method:
Auth:
Request Schema:
Response Schema:
Error Codes:
Rate Limits:

6. Data Model

Entities
Relationships
Constraints
Indexing Strategy
Migration Plan

7. Event & Messaging Contracts

Topic Names
Producers
Consumers
Retry Strategy
DLQ Handling
Idempotency Rules

8. Technical Functional Requirements

For each feature:

Inputs
Outputs
Validation Rules
Error Handling
State Transitions
Side Effects

9. Non-Functional Technical Requirements

Category Requirement Measurement ————— ————- ————- Performance
Availability
Observability
Security
Scalability

10. Security Architecture

Authentication
Authorization
Encryption
Secrets Management
Audit Logging

11. Testing Plan

11.1 Unit Tests

Coverage requirements.

11.2 Integration Tests

Service interaction validation.

11.3 Performance Tests

Load testing criteria.

11.4 Security Tests

Penetration & vulnerability scans.

12. DevOps & Deployment

CI/CD Pipeline
Environments (Dev, QA, Prod)
Rollback Strategy
Monitoring & Alerts

13. Observability

Required Logs
Metrics
Tracing
Alert Thresholds

14. Agent Clarification Prompts

Are APIs fully specified?
Are schemas versioned?
Is backward compatibility required?
Are rate limits defined?
Is monitoring coverage adequate?

15. Revision History

Version Date Author Notes ——— —— ——– ——-