A deterministic hierarchical statechart engine for LLM-driven workflows, available as a Rust library, CLI, and MCP server. It provides auditable transitions, tamper-evident journals, exact decimal arithmetic, and idempotent execution.
Prices and medians update for the tier you select. Caution: thin market — treat statistics as indicative.
Compare at
fsm · Pro
No Pro plan
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Pro-MCP server median
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insufficient comparable pricing
vs Pro MCP servers
No comparison
fsm doesn't sell Pro
ⓘ Comparisons are same provider type (MCP server) and same buyer tier (Pro). Never across tiers.
Market density
9th pctile
5 competing vendors
Comparable listings · 30d
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Price spectrum · Pro plans · 1 of 1 providers priced · log scale · $150 → $150/mo
Agents◻ shaded = middle 50% · line = median (all types)fsm has no comparable Pro price — not plotted
Products in this market
Ranked by how closely each one matches fsm's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.