Scratchattach MCP

social_connect_session

path_to_env, scratch_username, scratch_password, scratch_session_id, browser_name, remember

social_list_sessions

List held sessions and which is active.

social_set_active_session

username

social_verify_session

Ask Scratch whether a stored session is still valid.

social_forget_session

username, logout

social_set_bio

Set "About me".

social_set_whatimworkingon

Set "What I'm working on".

social_set_pfp

Set the profile picture from a PNG/JPEG/GIF.

social_get_user_info

username, recent_comments

social_get_project_info

id, recent_comments

social_search_projects

query, sort, limit, offset, language

social_check_inbox

limit, offset

social_get_comments

source, *source_id, limit, offset, page, include_replies

social_get_comment_replies

source, *source_id, *comment_id, limit, offset

social_post_comment

source, *source_id, *content, parent_id, commentee_id

social_reply_to_comment

source, *source_id, *parent_id, *content, commentee_id

social_follow_user

username, action

social_like_project

id, action

social_add_project_to_studio

project_id, *studio_id

social_become_scratcher

Accept a pending "become a Scratcher" invitation.

project_new

path, published_project_id, git

project_open

path, published_project_id

project_download

path, project_id, sb3_path, overwrite, verify

project_list

List known projects.

project_select

Choose the active project.

project_info

Sprites, publish target and compatibility.

project_close

Forget a project.

project_list_assets

sprite, path

project_add_costume

sprite, file, svg, name, path

project_add_sound

sprite, *file, name, path

project_remove_asset

sprite, *kind, *name, path

project_build

Compile to.sb3.

project_summary

What the build actually produced: per-sprite block and script counts, costumes, sounds, variables, layer order, asset sizes, and warnings for unused or…

project_save_to_cloud

path, title, visibility, build, thumbnail

project_set_thumbnail

file, path

project_editing_guide

Read before creating or editing a project: Scratch's hard limits and a goboscript primer.

project_goboscript_docs_help

The goboscript docs.

project_check_toolchain

Whether goboscript and sb2gs are installed and runnable.