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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "once": {
      "type": "http",
      "url": "https://once.aiagenthuddle.com/mcp",
      "headers": {
        "Authorization": "Bearer ${api_key}",
        "Once-GitHub-Token": "${ONCE_GITHUB_TOKEN}",
        "Once-Stripe-Test-Key": "${ONCE_STRIPE_TEST_KEY}"
      }
    }
  }
}

claude mcp add --transport http once https://once.aiagenthuddle.com/mcp --header "Authorization: Bearer ${api_key}" --header "Once-GitHub-Token: ${ONCE_GITHUB_TOKEN}" --header "Once-Stripe-Test-Key: ${ONCE_STRIPE_TEST_KEY}"

[mcp_servers.once]
url = "https://once.aiagenthuddle.com/mcp"
bearer_token_env_var = "api_key"
env_http_headers = { "Once-GitHub-Token" = "ONCE_GITHUB_TOKEN", "Once-Stripe-Test-Key" = "ONCE_STRIPE_TEST_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "once": {
      "type": "remote",
      "url": "https://once.aiagenthuddle.com/mcp",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:api_key}",
        "Once-GitHub-Token": "{env:ONCE_GITHUB_TOKEN}",
        "Once-Stripe-Test-Key": "{env:ONCE_STRIPE_TEST_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "once": {
      "type": "http",
      "url": "https://once.aiagenthuddle.com/mcp",
      "headers": {
        "Authorization": "Bearer ${api_key}",
        "Once-GitHub-Token": "${ONCE_GITHUB_TOKEN}",
        "Once-Stripe-Test-Key": "${ONCE_STRIPE_TEST_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=once&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vb25jZS5haWFnZW50aHVkZGxlLmNvbS9tY3AiLCJoZWFkZXJzIjp7IkF1dGhvcml6YXRpb24iOiJCZWFyZXIgJHthcGlfa2V5fSIsIk9uY2UtR2l0SHViLVRva2VuIjoiJHtPTkNFX0dJVEhVQl9UT0tFTn0iLCJPbmNlLVN0cmlwZS1UZXN0LUtleSI6IiR7T05DRV9TVFJJUEVfVEVTVF9LRVl9In19"
}

{
  "servers": {
    "once": {
      "type": "http",
      "url": "https://once.aiagenthuddle.com/mcp",
      "headers": {
        "Authorization": "Bearer ${api_key}",
        "Once-GitHub-Token": "${ONCE_GITHUB_TOKEN}",
        "Once-Stripe-Test-Key": "${ONCE_STRIPE_TEST_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "once": {
      "httpUrl": "https://once.aiagenthuddle.com/mcp",
      "headers": {
        "Authorization": "Bearer ${api_key}",
        "Once-GitHub-Token": "${ONCE_GITHUB_TOKEN}",
        "Once-Stripe-Test-Key": "${ONCE_STRIPE_TEST_KEY}"
      }
    }
  }
}

extensions:
  "once":
    enabled: true
    name: "once"
    type: streamable_http
    uri: "https://once.aiagenthuddle.com/mcp"
    headers:
      "Authorization": "Bearer ${api_key}"
      "Once-GitHub-Token": "${ONCE_GITHUB_TOKEN}"
      "Once-Stripe-Test-Key": "${ONCE_STRIPE_TEST_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${api_key}, ${ONCE_GITHUB_TOKEN}, ${ONCE_STRIPE_TEST_KEY}. The registry never accepts secret values.

Quality – / 100not scored

Not scored: fewer than three checks apply, usually because no remote answered a credential-free probe or the server is a local package.

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)

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 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 10:35 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 80 / 100

no-repository

provenance45

liveness100

freshness100

hygiene80

+website +reachable +uptime-100% +updated-10d-ago -no-repository

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://once.aiagenthuddle.com/mcp` streamable-http	api_key `${ONCE_GITHUB_TOKEN}`	yes	100%	338 ms	–	2026-10-20

Tools (0)

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

Schemas: list_tools.

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Official server.json

{
  "name": "io.github.londoncoding/once",
  "title": "ONCE — AI Agent Huddle",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://once.aiagenthuddle.com/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "value": "Bearer {api_key}",
          "variables": {
            "api_key": {
              "isSecret": true,
              "isRequired": true,
              "description": "ONCE project API key; keep server-side."
            }
          },
          "description": "Your ONCE project API key from https://once.aiagenthuddle.com/. Signup and email confirmation required."
        },
        {
          "name": "Once-GitHub-Token",
          "isSecret": true,
          "description": "Optional repository-restricted GitHub token with Issues read/write. Required for GitHub create/retry/reconcile; never a tool argument."
        },
        {
          "name": "Once-GitHub-Repository",
          "description": "Optional owner/repository matching the token. Required with Once-GitHub-Token."
        },
        {
          "name": "Once-Stripe-Test-Key",
          "isSecret": true,
          "description": "Optional Stripe test secret key for test PaymentIntents only. Live Stripe execution is rejected."
        }
      ]
    }
  ],
  "version": "0.1.0",
  "websiteUrl": "https://once.aiagenthuddle.com/docs.html",
  "description": "Track GitHub issue and Stripe test-payment outcomes; recover uncertain supported actions."
}