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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "onto": {
      "type": "http",
      "url": "https://api.buildonto.dev/mcp"
    }
  }
}

claude mcp add --transport http onto https://api.buildonto.dev/mcp

[mcp_servers.onto]
url = "https://api.buildonto.dev/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "onto": {
      "type": "remote",
      "url": "https://api.buildonto.dev/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "onto": {
      "type": "http",
      "url": "https://api.buildonto.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=onto&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLmJ1aWxkb250by5kZXYvbWNwIn0%3D"
}

{
  "servers": {
    "onto": {
      "type": "http",
      "url": "https://api.buildonto.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "onto": {
      "httpUrl": "https://api.buildonto.dev/mcp"
    }
  }
}

extensions:
  "onto":
    enabled: true
    name: "onto"
    type: streamable_http
    uri: "https://api.buildonto.dev/mcp"
    timeout: 300

Quality 75 / 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

dependencies67 · weight 15

pass
deps.known_vulnsno known advisory in 98 resolved packages
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.30.1 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
pass
deps.resolvable@ontosdk/[email protected] resolved: 98 packages

Tool list unknown · checked 2026-10-19 11:27 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 94 / 100

provenance90

liveness100

freshness85

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% ~updated-45d-ago

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

Dependencies

@ontosdk/[email protected] npm97 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.31.0`

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://api.buildonto.dev/mcp` streamable-http	oauth2 AS: https://api.buildonto.dev	yes	100%	354 ms	–	2026-10-19

package	registry	version	runtime	secrets
`@ontosdk/mcp`	npm	1.5.2	–	`ONTO_API_KEY`

Tools (0)

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

Schemas: list_tools.

Official server.json

{
  "name": "io.github.ravixalgorithm/onto",
  "title": "Onto",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://api.buildonto.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.5.2",
  "packages": [
    {
      "version": "1.5.2",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@ontosdk/mcp",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "ONTO_API_KEY",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Your Onto API key (get one at https://app.buildonto.dev/read/keys — free tier includes 1,000 credits/month)."
        },
        {
          "name": "ONTO_API_BASE",
          "format": "string",
          "description": "Optional override for the Onto API base URL. Defaults to https://api.buildonto.dev."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/ravixalgorithm/onto-mcp",
    "source": "github"
  },
  "websiteUrl": "https://buildonto.dev",
  "description": "Clean Markdown and AI-readability scoring for any URL. Built for AI agents."
}