What is Endprompt?
Endprompt is a platform for creating, managing, and deploying LLM-powered API endpoints. Instead of wrestling with prompt engineering, versioning, and infrastructure, you focus on building great products.Create Endpoints
Define stable API paths with typed input and output schemas
Write Prompts
Use Liquid templating to create dynamic, reusable prompts
Test & Iterate
Test prompts instantly with auto-generated forms or bulk CSV uploads
Deploy with Confidence
Version prompts, promote to live, and rollback safely
Why Endprompt?
Most teams building with LLMs face the same challenges:- No versioning discipline — Prompts change without history or rollback capability
- Inconsistent schemas — Input/output formats drift over time
- No observability — Hard to debug why a response was wrong
- Painful iteration — Testing changes requires code deployments
Stable API Endpoints
Stable API Endpoints
Your integration code never changes. Swap prompts, models, and configurations behind a stable URL like
https://yourcompany.api.endprompt.ai/api/v1/summarize.Strong Schema Enforcement
Strong Schema Enforcement
Define exactly what inputs your endpoint accepts and what outputs it returns. Validation happens automatically—malformed requests are rejected before hitting the LLM.
Safe Iteration Workflow
Safe Iteration Workflow
Draft prompts, test them, promote to live. Keep multiple versions and rollback instantly if something goes wrong.
Built-in Observability
Built-in Observability
Every execution is logged with inputs, outputs, latency, token usage, and cost. Replay any request to debug issues.
How It Works
Create an Endpoint
Define your API path (e.g.,
/api/v1/summarize) and specify the input fields your endpoint accepts.Write a Prompt
Create a prompt using Liquid templating. Reference your input fields with
{{ inputs.fieldName }}.Test Your Prompt
Use the built-in test runner to send requests and see real LLM responses instantly.