Morph Fast Apply Use Cases: Builders, Editors, IDEs & Large Files

Give us code or files. We apply LLM edits and return clean, merged output. No chat UI, no fragile patches.

1 min readBy Morph Engineering Team
10,500+
Tokens/sec
OpenAI
API Compatible
Modal + vLLM
Inference Stack

What Morph Apply Does

Morph Apply is a deterministic merge step. It takes the LLM’s intent and merges it into the source with structure awareness. The result is a clean, usable file — not a best‑effort patch.

Semantic Merge

Keeps imports, types, and structure intact while applying changes across complex files.

Fast by Design

Built for high‑throughput agents and pipelines. Apply edits at 10,500+ tokens/sec.

Developer‑First

No chat UI. Just APIs and predictable merges for developer tools and workflows.

The Input Contract

Morph Apply expects three things: the instruction, the current code (or file), and an update snippet. The response is the fully merged output, ready to write back to disk.

Minimal Apply Payload

<instruction>Update the error message to mention API limits</instruction>
export function handleError() {
  return 'Unknown error';
}
Update:
export function handleError() {
  return 'Unknown error (check API limits)';
}

Use Cases

Morph Apply shines when edits are real code, real structure, and real risk. Pick the workflow closest to yours.

Integration Patterns

Most teams deploy Morph Apply in one of these three patterns. Pick the one that matches your UX.

Inline Apply

User asks, LLM drafts, Morph Apply merges, editor updates. Great for direct edit surfaces.

Batch Apply

Queue multiple edits, apply once, then show a unified preview. Ideal for large changes.

Agent Pipeline

Agent plans, writes updates, Morph Apply merges, CI validates. Works for autonomous workflows.

Ready to Ship Reliable LLM Edits?

Hook Morph Apply into your workflow and stop babysitting fragile patches.