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io.mcpcentral/jsoncanvas

Registre officiel Recherche et web

Create, validate, edit, export (markdown/svg/png/mermaid), and search JSON Canvas files.

Code source Site web Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http jsoncanvas 'https://jsoncanvas.mcpcentral.io/mcp' --header 'Authorization: <Bearer token from the MCPCentral gateway (Microsoft Entra OAuth at login.mcpcentral.io). Canvases are stored per authenticated user.>'
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "jsoncanvas": {
            "type": "http",
            "url": "https://jsoncanvas.mcpcentral.io/mcp",
            "headers": {
                "Authorization": "<Bearer token from the MCPCentral gateway (Microsoft Entra OAuth at login.mcpcentral.io). Canvases are stored per authenticated user.>"
            }
        }
    }
}

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. JSON Canvas MCP Server
  2. Authentication
  3. Client configuration
  4. Tools
  5. Resources
  6. Security
  7. License

JSON Canvas MCP Server

A remote Model Context Protocol server for working with JSON Canvas files — the open infinite-canvas format used by Obsidian. Create, validate, read, edit, export, and search .canvas files, with an inline interactive canvas viewer.

Hosted by MCPCentral at https://jsoncanvas.mcpcentral.io/mcp (Streamable HTTP). This repository is the public listing for the MCP Registry; the server itself is closed-source.

mcp-name: io.mcpcentral/jsoncanvas

Authentication

The endpoint requires Microsoft Entra OAuth via the MCPCentral gateway (login.mcpcentral.io). MCP clients perform the standard OAuth flow automatically: an unauthenticated request returns 401 with a WWW-Authenticate pointing at the RFC 9728 metadata at /.well-known/oauth-protected-resource, and the client takes you through sign-in. Canvases are stored privately per authenticated user.

Client configuration

Claude Code

claude mcp add jsoncanvas --transport http https://jsoncanvas.mcpcentral.io/mcp

Claude Desktop / other clients via mcp-remote

{
  "mcpServers": {
    "jsoncanvas": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://jsoncanvas.mcpcentral.io/mcp"]
    }
  }
}

Any MCP client that supports remote Streamable HTTP servers with OAuth (Claude, Goose, OpenAI connectors, MCP Inspector) can connect.

Tools

ToolDescription
create_canvasCreate a canvas from nodes (+ optional edges); stored under a date-prefixed .canvas name.
validate_canvasValidate canvas data against the JSON Canvas 1.0 spec.
read_canvasRead a stored canvas and return its nodes and edges.
list_canvasesList your stored canvases.
edit_canvasAtomic batch add/update/remove of nodes and edges (removing a node cascades its edges).
export_canvasExport to markdown, svg, mermaid, or png (full-fidelity raster via Browser Rendering).
search_canvasesCase-insensitive field-level search across your canvases.

create_canvas, read_canvas, and edit_canvas carry MCP Apps UI metadata so supporting hosts render the result inline in an interactive pan/zoom viewer.

Resources

  • canvas://schema — JSON Schema for canvas files.
  • canvas://examples/basic — a simple two-node example canvas.
  • ui://canvas/viewer.html — the interactive read-only viewer (MCP Apps UI).

Security

  • Per-user isolation — every canvas is scoped to the authenticated user; no cross-user reads.
  • Auth required — all tool calls require a valid Entra-issued bearer token.
  • Hardened — strict input/size caps, bounded search, accurate tool annotations, and an SSRF-blocked PNG renderer (the headless browser cannot be coerced into outbound requests).
  • Report vulnerabilities per SECURITY.md. Please do not open public issues for security reports.

License

MIT.

Questions fréquentes

Qu'est-ce que io.mcpcentral/jsoncanvas ?

Create, validate, edit, export (markdown/svg/png/mermaid), and search JSON Canvas files.

Comment installer io.mcpcentral/jsoncanvas ?

Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http jsoncanvas 'https://jsoncanvas.mcpcentral.io/mcp' --header 'Authorization: <Bearer token from the MCPCentral gateway (Microsoft Entra OAuth at login.mcpcentral.io). Canvases are stored per authenticated user.>'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour io.mcpcentral/jsoncanvas ?

Oui. Il attend Authorization, à renseigner dans sa configuration.

io.mcpcentral/jsoncanvas est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient io.mcpcentral/jsoncanvas ?

Il est publié par mcpcentral-io. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.