Relaystation Three-Way Text Merge

Choose this endpoint when you need programmatic three-way text merging — specifically when two parties have independently edited a shared base document and you want to reconcile their changes with explicit conflict markers for overlapping regions. It's ideal for document collaboration workflows, version control–style merging outside of git, or any agent pipeline that needs to unify concurrent edits. Prefer it over simple two-way diff tools when you have a known common ancestor and need conflict detection rather than just line-by-line diffing.

• Missing one or more of the three required text inputs (base, version A, version B)
• Input text too large for the per-MB pricing tier, leading to unexpected cost or truncation
• Malformed request body causing a 400 error
• Entire document is a conflict (both versions differ from base everywhere), resulting in a heavily marker-laden output
• x402 payment not sent or insufficient credits, causing a 402 Payment Required response