GRAPH.md Validator — Free Workflow Graph Validation | Cromus
The free GRAPH.md validator checks YAML syntax, required graph fields, node and edge IDs, supported kinds, duplicate identifiers, dangling references, bounded loops, state keys, and entry-to-exit reachability.
Validation is deterministic and runs locally in the browser. It requires no account, makes no LLM call, and does not upload or store the graph document.