Why Veyyon

This section explains why Veyyon exists and what it gives you. Veyyon is a coding agent that runs in your terminal, edits real code, and lets you bring your own model keys. The pages here are the value proposition: what changes, why it is faster and cheaper, and how the design behind it keeps the agent honest.

• What Veyyon gives you introduces the problem Veyyon solves and the concrete benefits you get from a harness built around each model’s strengths.

• What makes Veyyon different is the short design map behind those benefits: hashline-first editing, per-model harnesses, tiered tool approval, and stop-when-green control flow.

• Performance shows how fewer retries, an edit format that open models emit reliably, and a lightweight harness add up to faster turns and lower cost.

• Edits that land the first time explains how Veyyon repairs malformed tool calls and normalizes diffs so a change does not bounce back for a retry.

• Lower token cost and faster turns details how bounded tools, compaction, and early verification keep the context focused on what still matters.

• Model choice without lock-in covers the provider-agnostic engine and per-model profiles that let you point Veyyon at any supported model or API.

• Safety and honesty you can see describes the visible sandbox, loud failures, and honest telemetry that make the agent safe to use in real repositories.

Where to go next: install Veyyon with Install, then read the Core concepts section to learn how sessions, context, and the harness fit together.