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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "arbiter": {
      "command": "npx",
      "args": [
        "-y",
        "@arbiterlabs/[email protected]"
      ],
      "env": {
        "ARBITER_URL": "https://arbiter-hs23.onrender.com",
        "ARBITER_PRIVATE_KEY": "${ARBITER_PRIVATE_KEY}",
        "ARBITER_MAX_SPEND_USD": "25",
        "ARBITER_MAX_PRICE_PER_CALL": "1"
      }
    }
  }
}

claude mcp add arbiter -e "ARBITER_URL=https://arbiter-hs23.onrender.com" -e "ARBITER_PRIVATE_KEY=${ARBITER_PRIVATE_KEY}" -e "ARBITER_MAX_SPEND_USD=25" -e "ARBITER_MAX_PRICE_PER_CALL=1" -- npx -y @arbiterlabs/[email protected]

[mcp_servers.arbiter]
command = "npx"
args = ["-y", "@arbiterlabs/[email protected]"]
env = { "ARBITER_URL" = "https://arbiter-hs23.onrender.com", "ARBITER_PRIVATE_KEY" = "${ARBITER_PRIVATE_KEY}", "ARBITER_MAX_SPEND_USD" = "25", "ARBITER_MAX_PRICE_PER_CALL" = "1" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "arbiter": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@arbiterlabs/[email protected]"
      ],
      "enabled": true,
      "environment": {
        "ARBITER_URL": "https://arbiter-hs23.onrender.com",
        "ARBITER_PRIVATE_KEY": "{env:ARBITER_PRIVATE_KEY}",
        "ARBITER_MAX_SPEND_USD": "25",
        "ARBITER_MAX_PRICE_PER_CALL": "1"
      }
    }
  }
}

{
  "mcpServers": {
    "arbiter": {
      "command": "npx",
      "args": [
        "-y",
        "@arbiterlabs/[email protected]"
      ],
      "env": {
        "ARBITER_URL": "https://arbiter-hs23.onrender.com",
        "ARBITER_PRIVATE_KEY": "${ARBITER_PRIVATE_KEY}",
        "ARBITER_MAX_SPEND_USD": "25",
        "ARBITER_MAX_PRICE_PER_CALL": "1"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=arbiter&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBhcmJpdGVybGFicy9tY3BAMC4xLjEiXSwiZW52Ijp7IkFSQklURVJfVVJMIjoiaHR0cHM6Ly9hcmJpdGVyLWhzMjMub25yZW5kZXIuY29tIiwiQVJCSVRFUl9QUklWQVRFX0tFWSI6IiR7QVJCSVRFUl9QUklWQVRFX0tFWX0iLCJBUkJJVEVSX01BWF9TUEVORF9VU0QiOiIyNSIsIkFSQklURVJfTUFYX1BSSUNFX1BFUl9DQUxMIjoiMSJ9fQ%3D%3D"
}

{
  "servers": {
    "arbiter": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@arbiterlabs/[email protected]"
      ],
      "env": {
        "ARBITER_URL": "https://arbiter-hs23.onrender.com",
        "ARBITER_PRIVATE_KEY": "${ARBITER_PRIVATE_KEY}",
        "ARBITER_MAX_SPEND_USD": "25",
        "ARBITER_MAX_PRICE_PER_CALL": "1"
      }
    }
  }
}

{
  "mcpServers": {
    "arbiter": {
      "command": "npx",
      "args": [
        "-y",
        "@arbiterlabs/[email protected]"
      ],
      "env": {
        "ARBITER_URL": "https://arbiter-hs23.onrender.com",
        "ARBITER_PRIVATE_KEY": "${ARBITER_PRIVATE_KEY}",
        "ARBITER_MAX_SPEND_USD": "25",
        "ARBITER_MAX_PRICE_PER_CALL": "1"
      }
    }
  }
}

extensions:
  "arbiter":
    enabled: true
    name: "arbiter"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "@arbiterlabs/[email protected]"
    envs:
      "ARBITER_URL": "https://arbiter-hs23.onrender.com"
      "ARBITER_PRIVATE_KEY": "${ARBITER_PRIVATE_KEY}"
      "ARBITER_MAX_SPEND_USD": "25"
      "ARBITER_MAX_PRICE_PER_CALL": "1"
    timeout: 300

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

This is a local package: the command runs on your machine.

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

dependencies67 · weight 15

pass
deps.known_vulnsno known advisory in 121 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@arbiterlabs/[email protected] resolved: 121 packages

Tool list unknown · checked 2026-10-19 21:10 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 91 / 100

provenance90

livenessn/a

freshness85

hygiene100

+repository +namespace-matches-repo +website ~liveness-unmeasured ~updated-75d-ago

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

Dependencies

@arbiterlabs/[email protected] npm120 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

package	registry	version	runtime	secrets
`@arbiterlabs/mcp`	npm	0.1.1	–	`ARBITER_PRIVATE_KEY`

Tools (0)

No tools observed. Local packages are never executed by the registry.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.godwin105/arbiter",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.1.1",
  "packages": [
    {
      "version": "0.1.1",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@arbiterlabs/mcp",
      "registryType": "npm",
      "environmentVariables": [
        {
          "name": "ARBITER_URL",
          "format": "string",
          "default": "https://arbiter-hs23.onrender.com",
          "description": "Arbiter deployment to call. Defaults to the hosted service."
        },
        {
          "name": "ARBITER_PRIVATE_KEY",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Base64-encoded 64-byte Algorand private key used to pay for calls. The account needs USDC and must be opted in to the USDC asset. Without it every request stops at the paywall."
        },
        {
          "name": "ARBITER_MAX_SPEND_USD",
          "format": "number",
          "default": "25",
          "description": "Lifetime spending cap for this process, in USD. Enforced before anything is signed."
        },
        {
          "name": "ARBITER_MAX_PRICE_PER_CALL",
          "format": "number",
          "default": "1",
          "description": "Refuse any single call priced above this, in USD."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/godwin105/arbiter_AI",
    "source": "github"
  },
  "websiteUrl": "https://arbiter-hs23.onrender.com",
  "description": "Is this transaction safe to sign? Decodes what it really does and answers allow, warn or block."
}