---
title: "Add External Skill Root Handler"
method: POST
path: "/api/skills/external-roots"
tags: ["runtime_mutations", "skills"]
---

# Add External Skill Root Handler

`POST /api/skills/external-roots`

Register a folder as a live, read-only external skill source.

## Request body

- ExternalRootRequest
  - `path` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-18** `abf76937a751` — 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status

[Change history](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/changes/api/skills/external-roots/post.md)

---

[API](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api.md) · [All operations](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/llms.txt) · [OpenAPI document](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/revisions/397ad3a1d858?raw)