Context7
by upstash
Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.
Computer or cloud★ 64,224MITUpdated 3 days ago
Install
Jsoncanvas
Overview
Description from the maker (original English)
Create, validate, edit, export (markdown/svg/png/mermaid), and search JSON Canvas files.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs in the cloud
- Transport: Streamable HTTP
- Category: Search & AI memory
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- You fill in yourself:
Authorization
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Run this in your terminal
claude mcp add --transport http jsoncanvas https://jsoncanvas.mcpcentral.io/mcp --header 'Authorization: your-value'Fill in the empty values before running it.
Or copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"jsoncanvas": {
"url": "https://jsoncanvas.mcpcentral.io/mcp",
"headers": {
"Authorization": "your-value"
}
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"jsoncanvas": {
"type": "http",
"url": "https://jsoncanvas.mcpcentral.io/mcp",
"headers": {
"Authorization": "your-value"
}
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Your choice stays on this device in a cookie; no account needed.
Values you fill in
AuthorizationHTTP headerBearer token from the MCPCentral gateway (Microsoft Entra OAuth at login.mcpcentral.io). Canvases are stored per authenticated user.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified against the domain mcpcentral.io (the registry checks domain ownership)
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- … Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Search & AI memoryi
- More stars than 0% of the other 7234 servers in this category
- Published to the registry more recently than 13% of the other 7234 servers in this category
- Basic checks equal to or better than 100% of the other 7234 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Jsoncanvas safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 6 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Context7, Codebase Memory, Exa
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Codebase Memory
by DeusData
Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.
Runs on your computer★ 48,148MITUpdated 20 days ago
Install
Exa
by exa-labs
Connect AI agents to Exa for web search, content fetching, and multi-step research.
Runs in the cloud★ 5,213MITUpdated 44 days ago
Install
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
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/mcpClaude 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
| Tool | Description |
|---|---|
create_canvas | Create a canvas from nodes (+ optional edges); stored under a date-prefixed .canvas name. |
validate_canvas | Validate canvas data against the JSON Canvas 1.0 spec. |
read_canvas | Read a stored canvas and return its nodes and edges. |
list_canvases | List your stored canvases. |
edit_canvas | Atomic batch add/update/remove of nodes and edges (removing a node cascades its edges). |
export_canvas | Export to markdown, svg, mermaid, or png (full-fidelity raster via Browser Rendering). |
search_canvases | Case-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.