MCP server

GrayMatter

io.github.ValkyrLabs/graymatter

Checked 26 Oct 2026, 08:29 UTC · It answered and asked for a sign-in

Secure durable memory and bounded context for AI agents, with hosted OAuth and local Lite support.

Website Source

At a glance

Type

MCP server

Publisher

valkyrlabs.com (verified by the MCP Registry)

Status

Signs in with your account

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http graymatter https://api-0.valkyrlabs.com/graymatter/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.graymatter]
url = "https://api-0.valkyrlabs.com/graymatter/mcp"

Gemini CLI

{"mcpServers":{"graymatter":{"httpUrl":"https://api-0.valkyrlabs.com/graymatter/mcp"}}}

Cursor

{"mcpServers":{"graymatter":{"url":"https://api-0.valkyrlabs.com/graymatter/mcp"}}}

VS Code

{"servers":{"graymatter":{"type":"http","url":"https://api-0.valkyrlabs.com/graymatter/mcp"}}}

Antigravity

agy mcp add graymatter https://api-0.valkyrlabs.com/graymatter/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"graymatter","server_url":"https://api-0.valkyrlabs.com/graymatter/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"graymatter","server_url":"https://api-0.valkyrlabs.com/graymatter/mcp"}

Signs in with your account: your agent app opens a sign-in page the first time you use it.

Browse

• GitHub tools
• GitHub and code hosting

Related MCP servers

• WhiteMagic — governed local memory for agent continuity
  Governed local-first memory and continuity for AI agents — signed receipts, optional hosted lane.
• Noxgild
  Secure AI access to Windows, macOS, Linux computers and a hosted Cloud Browser.
• Configure Memory
  Bring your saved preferences, project decisions, and useful context into your next AI conversation.
• MemoryRouter
  Persistent AI memory shared across Claude, ChatGPT, coding agents, and compatible MCP clients.
• Aura
  Email address, webhook, durable memory and zero-token waiting for agents. Paid in USDC via x402.
• Studocu
  Find Studocu study documents, courses and institutions, and manage study projects and quizzes.
• Wingmanprotocol Gateway
  Durable self for AI agents: one-call resume, memory, a real browser, research, free chat.
• Dayze — Life Context
  Life context for agents: get_context_pack + public notable packs. x402 + OAuth.

Badge for your README

[![AptLynx](https://aptlynx.net/badge/io.github.ValkyrLabs/graymatter.svg)](https://aptlynx.net/servers/io.github.ValkyrLabs/graymatter)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents