# HTTP: builtin-instructions

Arc agent documentation

All 4 builtin-instructions endpoints, with request fields and access notes.

[HTTP directory](/arc/docs/reference/http) · [Transport guide](/arc/docs/guides/http)

Request fields and access notes below are partial. Additional constraints and permissions may apply. Prefer the corresponding MCP tool and schema where available.

## GET /v1/builtin-instructions

List builtin instructions.

This directory does not provide a request schema for this endpoint. Use the corresponding supported tool or client where available.

## GET /v1/builtin-instructions/{id}

Get builtin instruction.

Path parameters: `id`.

This directory does not provide a request schema for this endpoint. Use the corresponding supported tool or client where available.

## PATCH /v1/builtin-instructions/{id}

Patch builtin instruction.

Path parameters: `id`.

Access: LAN writes require an active session token. Local loopback requests are exempt from this requirement by default; other permissions still apply.

Additional body field names (types and requiredness not specified here): `body`.

## POST /v1/builtin-instructions/{id}/reset

Reset builtin instruction.

Path parameters: `id`.

Access: LAN writes require an active session token. Local loopback requests are exempt from this requirement by default; other permissions still apply.

This directory does not provide a request schema for this endpoint. Use the corresponding supported tool or client where available.