Agentsmith
Open Source Prompt CMS • develop AI agents with peace of f*cking mind!
FreeAI Agents2,536 impressions#5 of its week
Agentsmith is an open-source Prompt CMS for authoring, testing, versioning and syncing AI prompts.
- for
- Prompt engineers, developers building AI agents, and teams needing centralized prompt management.
- pricing
- freemium
- license
- Apache-2.0
- sdk-v0.0.8SDK Release 0.0.8a year ago
- sdk-v0.0.8-staging.1SDK Release 0.0.8-staging.1a year ago
- sdk-v0.0.7SDK Release 0.0.7a year ago
Key features
- Jinja-based authoring — Write prompts with Jinja syntax and compose reusable instructions.
- Variable extraction — Editor auto-detects variables and lets you mark them required or optional.
- Model testing — Test prompts against any OpenRouter-supported LLM directly in the Studio.
- GitHub sync — Push and pull prompt templates and config as files via pull requests.
- Generated types — Compile-time type generation prevents silent usage errors.
- Metrics & analytics — Built-in logging, usage metrics and retention controls per plan.
Use cases
- Version-controlled prompt libraries for a team of AI developers.
- Rapid prototyping of prompts across multiple LLM providers.
- Integrating prompt updates into CI/CD pipelines via GitHub.
- Monitoring prompt usage and performance in production.
Agentsmith vs alternatives
 Agentsmith |  Fine |  SuperAGI Cloud |  Calljmp |  Inferable | |
|---|---|---|---|---|---|
| Best for | Centralized prompt authoring and Git sync | AI-driven software creation | Running autonomous agents | Managed AI agent backend | Fast LLM automation development |
| Pricing | Freemium | Free | Free | Free | Subscription |
| DevHunt upvotes | 2 | 75 | 43 | 35 | 26 |
| Launched | Aug 2025 | Jan 2023 | Jan 2023 | Feb 2026 | Nov 2024 |
- Agentsmith vs Fine: Fine focuses on building software with AI agents rather than prompt management.
- Agentsmith vs SuperAGI Cloud: SuperAGI Cloud provides cloud execution of autonomous agents, not a prompt CMS.
- Agentsmith vs Calljmp: Calljmp offers managed backend for AI agents as code, lacking built-in prompt versioning.
- Agentsmith vs Inferable: Inferable emphasizes developer experience for LLM-based automations, not centralized prompt storage.
Agentsmith FAQ
What is a Prompt CMS?+
A Prompt CMS centralizes creation, versioning, and deployment of AI prompts for teams.
How does Agentsmith improve my AI agent development process?+
It provides a unified UI for authoring, testing, and syncing prompts, reducing manual errors and speeding iteration.
Is Agentsmith suitable if I'm not an expert developer?+
Yes, the interface supports non-technical users with auto-detected variables and optional required flags.
Can I use different AI models or switch providers with Agentsmith?+
Agentsmith is built on OpenRouter, allowing you to test or switch between any supported LLM.
What are the available plans and how can I get access?+
Free, Hobby, Pro, and Enterprise plans are listed; sign-up from the website or contact sales for Enterprise.
What are the benefits of Agentsmith being open source?+
You can self-host, audit the code, and contribute improvements while still using the hosted service.
Summarized by DevHunt from agentsmith.dev · Sep 28, 2026. Details may change; check the official site.
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