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Yo

R0· no sign-in

Let agents send content-free push notifications to a paired phone via MCP.

v1.0.1 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality79good
Trust94of 100
Uptime, 30 days100%
Latency p50325 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "yo": {
      "type": "http",
      "url": "https://getyo.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${YO_API_KEY}"
      }
    }
  }
}
claude mcp add --transport http yo https://getyo.dev/mcp --header "Authorization: Bearer ${YO_API_KEY}"
[mcp_servers.yo]
url = "https://getyo.dev/mcp"
bearer_token_env_var = "YO_API_KEY"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "yo": {
      "type": "remote",
      "url": "https://getyo.dev/mcp",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:YO_API_KEY}"
      }
    }
  }
}
{
  "mcpServers": {
    "yo": {
      "type": "http",
      "url": "https://getyo.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${YO_API_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=yo&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZ2V0eW8uZGV2L21jcCIsImhlYWRlcnMiOnsiQXV0aG9yaXphdGlvbiI6IkJlYXJlciAke1lPX0FQSV9LRVl9In19"
}
{
  "servers": {
    "yo": {
      "type": "http",
      "url": "https://getyo.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${YO_API_KEY}"
      }
    }
  }
}
{
  "mcpServers": {
    "yo": {
      "httpUrl": "https://getyo.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${YO_API_KEY}"
      }
    }
  }
}
extensions:
  "yo":
    enabled: true
    name: "yo"
    type: streamable_http
    uri: "https://getyo.dev/mcp"
    headers:
      "Authorization": "Bearer ${YO_API_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${YO_API_KEY}. The registry never accepts secret values.

Quality 79 / 100good

protocol88 · weight 25
  • pass
    protocol.modernsupports 2026-07-28 (server/discover)
  • pass
    protocol.statelessanswers without a session
  • pass
    protocol.transportstreamable HTTP
  • warn
    protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene86 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations5 of 5 tools declare readOnlyHint or destructiveHint
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: check_registration (destructiveHint, idempotentHint); cancel_registration (destructiveHint, idempotentHint); revoke_self (destructiveHint, idempotentHint); …
  • pass
    tools.token_costabout 941 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability50 · weight 15
  • pass
    stability.changes1 tool changes in 30 days
  • fail
    stability.rug_pull1 tools kept their name but changed most of their description in 30 days; review before trusting them
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

5 tools, about 941 tokens to load them all · tool set 4d50377010ff · tools last changed 2026-10-17 · checked 2026-10-20 02:33 UTC

Tool changes

  • yochangeddescription, input schemameaning changed
    before

    Send a Yo — a content-free push notification — to your owner. Requires an agent API key as the Bearer token. Optionally include a context_url the notification tap-through will open.

    after · 45% of words in common

    Send a Yo push notification to your owner. Recommended: include a short subject explaining what the notification is about, and a context_url when there is a useful link to open. The subject appears on the lock screen and in the app; avoid secrets. Requires an agent API key as the Bearer token.

Full history: list_changes · trend: quality JSON.

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-72d-ago

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

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://getyo.dev/mcp streamable-httpnoneyes100%325 ms2026-07-282026-10-20

Tools (5)

cancel_registrationAbort a pairing you started with register_agent. Works while pending and after approval: an already-approved connection is revoked (the API key stops working) so a pairing approved by the wrong account can be undone. Available until the pairing expires, and for 15 minutes after you pick up the API key; later than that, use revoke_self. Then call register_agent again.
check_registrationCheck the status of a pairing code from register_agent. On the first poll after the user approves, the response includes the api_key exactly once — store it immediately in your secret mechanism — plus paired_with, the account the agent is now connected to, which you MUST show the user.
register_agentRegister this agent with Yo (unauthenticated). Returns a pairing URL and code to show the user, who approves the connection in the Yo app. Then poll check_registration to obtain the API key.
revoke_selfPermanently revoke THIS agent using its API key as the Bearer token. Use when you discover (at any time) that paired_with is not your owner’s account and cancel_registration no longer works. The key stops working immediately; call register_agent to start over.
yoSend a Yo push notification to your owner. Recommended: include a short subject explaining what the notification is about, and a context_url when there is a useful link to open. The subject appears on the lock screen and in the app; avoid secrets. Requires an agent API key as the Bearer token.

Schemas: list_tools.

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More from io.github.alfongj-com

Official server.json
{
  "name": "io.github.alfongj-com/yo",
  "title": "Yo",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://getyo.dev/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "value": "Bearer {YO_API_KEY}",
          "variables": {
            "YO_API_KEY": {
              "isSecret": true,
              "isRequired": true,
              "description": "Create or manage your Yo API key at https://getyo.dev/agents"
            }
          }
        }
      ]
    }
  ],
  "version": "1.0.1",
  "repository": {
    "url": "https://github.com/alfongj-com/yo-plugin",
    "source": "github"
  },
  "websiteUrl": "https://getyo.dev",
  "description": "Let agents send content-free push notifications to a paired phone via MCP."
}