PromptRails
01 / SOLUTIONS · AI ENGINEERS

Build agents,
not plumbing.

One SDK across 14 LLM providers, versioned prompts, and full execution traces. Ship the agent the same way you ship code — with semver, tests, and rollbacks.

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What you get.

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Version control for prompts

Treat prompts like code. Semantic versioning, branching, and one-click rollback to stable versions.

  • +Semantic versioning for prompt templates
  • +One-click rollback to stable versions
  • +Branch testing before production

Full execution tracing

Debug AI workflows with complete visibility into every step, token, and decision.

  • +Step-by-step execution traces
  • +Token usage and cost breakdown
  • +Latency and performance analytics

Multi-model routing

Switch between LLM providers without code changes. Compare performance and optimize costs instantly.

  • +Support for 14+ LLM providers
  • +Automatic failover routing
  • +Cost optimization across models
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Type-safe SDKs & CLI

Python, JavaScript, and Go SDKs with full type safety. Plus a CLI and MCP server integration.

  • +Python, JS + Go SDKs with autocomplete
  • +CLI for automation
  • +MCP server and A2A protocol support

I/O schema validation

Define schemas for your prompts and agents. Enforce structure on inputs and outputs automatically.

  • +JSON schema validation on inputs
  • +Structured output enforcement
  • +Jinja2 template engine for prompts

Agent orchestration patterns

Build simple agents, chains, multi-agent pipelines, or complex workflows with visual builders.

  • +5 agent types: simple, chain, multi-agent, workflow, composite
  • +Visual workflow builder
  • +Memory and context management

Ship a traced agent in 5 min.

Start free →Read the docs