# fsm

> fsm — koraytaylan-fsm. Use this tool when you need to manage complex state transitions with precision and transparency, solving problems like workflow automation and audit logging. The fsm engine takes in state definitions and inputs, producing a tamper-evident journal as output, and can be used as a library, CLI, or server. It is particularly useful in contexts requiring exact decimal arithmetic and zero dependencies, such as LLM-driven workflows and version-controlled systems like git.

Canonical page: https://skillsregistry.net/skills/koraytaylan-fsm  
JSON: https://api.skillsregistry.net/v1/skills/koraytaylan-fsm

## Description

Deterministic hierarchical statechart engine with a tamper-evident journal and exact decimal arithmetic. Zero dependencies. Usable as a Rust library, a CLI, or an MCP server for LLM-driven workflows.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** Apache-2.0
- **Updated:** 2026-09-21

## Source

- **Source listing:** [GitHub](https://github.com/koraytaylan/fsm)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "koraytaylan-fsm"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/koraytaylan-fsm` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/koraytaylan-fsm/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt