Standard protocol, any client
MCP (Model Context Protocol) is the agent-facing API for tool-calling between LLM clients and servers. Wikilayer speaks the standard MCP wire format, so any client connects without a bespoke SDK. The tree's read and write operations are exposed as MCP tools.
Wire format and authentication
Wikilayer follows the MCP wire format without proprietary extensions. Clients discover tools via tools/list and call them with tools/call.
Cloud installs require OAuth 2.1 + PKCE for client registration; self-hosted single-user installs skip auth entirely and treat every request as the bootstrapped user. The endpoint is <host>/mcp (https://wikilayer.org/mcp on the cloud).
Tools
Full input and output schemas arrive in the client's tools/list response, so a client never needs this page to call anything; what a tool is for is the part worth writing down.
Reading
get_outline: tree skeleton of a wiki, page, or block subtree.get_page_markdown: a whole page, or a wiki home, as one stitched document.get_node: one node's title + body.search_nodes: substring search over titles and bodies inside one wiki, by tag, or both.search_node_history: substring search over a wiki's change log; reaches deleted or overwritten text.list_translations: the language twins linked to a node.list_tags: a wiki's tags, each with how many nodes carry it.get_page_settings: what a page is set to beyond its text, its share link and its SEO overrides.list_wikis: wikis the caller can read.search_public_wikis: full-text search across every public wiki on the instance.
Writing
create_wiki: new wiki rooted under the caller's owner.update_wiki: wiki-level fields (title, visibility, primary language).add_language,remove_language: give a wiki a home in another language, or take one away.create_nodes: batch-create pages and blocks under a parent.update_node: replace a node's title and body.patch_node: ordered literal-string replacements on a body.move_node: reparent a node and its subtree.split_node: cut an oversized body into child blocks server-side, without shipping it through the read cap.delete_nodes: remove nodes with their subtrees (history preserved).migrate: move a subtree to another wiki, rewriting the links that pointed into it.link_translation,unlink_translation: bind a node to its twin in another language, or separate them.tag_nodes,update_tag,delete_tag: group nodes that don't share a parent.
Assets, sharing, SEO
request_upload: signed URL for uploading an image to attach into a markdown body. Only on deploys with object storage configured.share_page: a read-only link to one page of a private wiki, and the way to withdraw it.set_page_seo: hand-authored OG / Twitter overrides for a public page.