Module mcp

MCP server so AI agents (Claude Code etc.) can co-edit live: Streamable HTTP transport (JSON-RPC 2.0 over HTTP POST /mcp on 127.0.0.1:, no external crates — a tiny HTTP/1.1 parser on std TcpListener), toggled in Settings. The server thread handles initialize, ping, tools/list, tools/call, resources/list, resources/read (project json, style summary, notes) and answers JSON (no SSE stream needed for request/response). Tool calls are forwarded to the UI thread as ToolCalls (the App executes them on the next frame against the live project, with undo, and replies through the oneshot sender); ctx.request_repaint() wakes the UI. Tool definitions (names, descriptions, JSON schemas) live in tools.rs — the App matches on the same names.

Connect from Claude Code: claude mcp add --transport http simple-editor http://127.0.0.1:7337/mcp

Modules

tools

The MCP tool catalogue — the single source of truth for tool names/arguments. mcp/mod.rs serves it (tools/list with JSON schemas built from ARGS); ui/app.rs executes calls by name with exactly these arguments (unknown tool → error “unknown tool”). Keep both in sync with this table.

Structs

Server

ToolCall

One tool invocation forwarded to the UI thread; reply with Ok(result json) or Err(message).

Constants

CRC_TABLE 🔒

MAX_BODY 🔒

MAX_CONNS 🔒

READ_TIMEOUT 🔒

Functions

adler32 🔒

call_tool 🔒

Forward one tool call to the UI thread and wait for the reply.

claude_code_command

The claude mcp add command line shown in the settings UI.

crc32 🔒

dispatch 🔒

One JSON-RPC request → response (None for notifications).

handle_connection 🔒

handle_post 🔒

Handle a POST body (single request or batch). None = nothing to send back (notifications only) → 202.

origin_ok 🔒

png_encode

Encode an RGBA frame as PNG (store-only zlib) for the render.frame tool.

rpc_err 🔒

session_id 🔒

write_chunk 🔒

write_response 🔒