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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

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

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

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

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "graymatter": {
      "type": "remote",
      "url": "https://api-0.valkyrlabs.com/graymatter/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "graymatter": {
      "type": "http",
      "url": "https://api-0.valkyrlabs.com/graymatter/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=graymatter&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLTAudmFsa3lybGFicy5jb20vZ3JheW1hdHRlci9tY3AifQ%3D%3D"
}

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

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

extensions:
  "graymatter":
    enabled: true
    name: "graymatter"
    type: streamable_http
    uri: "https://api-0.valkyrlabs.com/graymatter/mcp"
    timeout: 300

Quality 83 / 100good

protocoln/a · weight 25

n/a
protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)

authorization83 · weight 15

pass
auth.prmProtected Resource Metadata (RFC 9728) published
pass
auth.as_metadataauthorization server metadata reachable
warn
auth.cimdonly Dynamic Client Registration, deprecated in 2026-07-28 in favour of CIMD
n/a
auth.secret_in_urlno templated URL

tool hygienen/a · weight 30

n/a
tools.descriptions, tools.description_length, tools.schemas, tools.annotations, tools.directory_hints, tools.token_cost, tools.api_dumptool list unknown (behind auth, not probed, or empty)

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool list unknown

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

Tool list unknown · checked 2026-10-20 02:01 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 97 / 100

provenance90

liveness99

freshness100

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-98% +updated-14d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://api-0.valkyrlabs.com/graymatter/mcp` streamable-http	oauth2 AS: https://api-0.valkyrlabs.com	yes	98%	351 ms	–	2026-10-19

Tools (0)

No tools observed. Tools appear once a credential-free probe can list them.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.ValkyrLabs/graymatter",
  "_meta": {
    "io.modelcontextprotocol.registry/publisher-provided": {
      "localLite": {
        "installation": "Separate source or GrayMatter extension setup; this listing installs the hosted connection.",
        "documentationUrl": "https://github.com/ValkyrLabs/GrayMatter/blob/main/docs/graymatter-light.md",
        "hostedAccountRequired": false,
        "registryPackagePublished": false
      },
      "publisher": {
        "url": "https://github.com/ValkyrLabs",
        "name": "Valkyr Labs"
      },
      "supportUrl": "https://github.com/ValkyrLabs/GrayMatter/issues",
      "authentication": {
        "type": "oauth2",
        "hostedAccountRequired": true,
        "protectedResourceMetadataUrl": "https://api-0.valkyrlabs.com/.well-known/oauth-protected-resource",
        "authorizationServerMetadataUrl": "https://api-0.valkyrlabs.com/.well-known/oauth-authorization-server"
      },
      "installationDocumentationUrl": "https://github.com/ValkyrLabs/GrayMatter/blob/main/docs/mcp-registry.md"
    }
  },
  "title": "GrayMatter",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://api-0.valkyrlabs.com/graymatter/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.3.3",
  "repository": {
    "url": "https://github.com/ValkyrLabs/GrayMatter",
    "source": "github"
  },
  "websiteUrl": "https://github.com/ValkyrLabs/GrayMatter",
  "description": "Secure durable memory and bounded context for AI agents, with hosted OAuth and local Lite support."
}