builder-io

name

builder-io

description

Builder.io is a visual development platform that provides headless CMS, drag-and-drop page building, and content APIs, allowing developers and marketers to create, manage, and optimize digital experiences across websites and applications with integration into modern frontend frameworks. Read and write Builder.io data through One: contententries, image, htmlcontent, testconnection and more, 5 actions with real parameter documentation. Use whenever the user asks to look something up in Builder.io, create or update a record there, or build code against the Builder.io API.

Builder.io through One

Builder.io is a visual development platform that provides headless CMS, drag-and-drop page building, and content APIs, allowing developers and marketers to create, manage, and optimize digital experiences across websites and applications with integration into modern frontend frameworks.

One exposes Builder.io through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform builder-io if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm Builder.io is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real Builder.io account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

ContentEntries

Action	Method	Path	Action id
Get Content Entries	GET	/api/v3/content/{{modelName}}	conn_mod_def::GLdo9jSCS8I::gHNouFppSzW3-r_IkitMHw
Get Content Entry by ID	GET	/api/v3/content/{{model}}/{{entryId}}	conn_mod_def::GLdo9j-X8wI::TPXlGVJJSAC-9sUq-8FymA

Image

Action	Method	Path	Action id
Get Optimized Image	GET	/api/v1/image/{{filename}}	conn_mod_def::GLdo9f1V4WU::XLc5gpA_T_u6f655QqgdTw

HtmlContent

Action	Method	Path	Action id
Get Server-Rendered HTML	GET	/api/v3/html/{{modelName}}	conn_mod_def::GLdo9gSlZ1w::sRUOzmk8SzSzlCqGrybKqQ

TestConnection

Action	Method	Path	Action id
Test Connection	GET	/api/v3/content/page	conn_mod_def::GLdrfVJSHOw::Q8KcH9jwTP-guLM1RYpS2g

When a call fails

The error comes from Builder.io, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.

Full catalog: https://www.withone.ai/knowledge/builder-io

Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.