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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "warrant": {
      "command": "uvx",
      "args": [
        "warrant-verify==0.9.0"
      ],
      "env": {
        "WARRANT_KEY": "${WARRANT_KEY}"
      }
    }
  }
}

claude mcp add warrant -e "WARRANT_KEY=${WARRANT_KEY}" -- uvx warrant-verify==0.9.0

[mcp_servers.warrant]
command = "uvx"
args = ["warrant-verify==0.9.0"]
env = { "WARRANT_KEY" = "${WARRANT_KEY}" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "warrant": {
      "type": "local",
      "command": [
        "uvx",
        "warrant-verify==0.9.0"
      ],
      "enabled": true,
      "environment": {
        "WARRANT_KEY": "{env:WARRANT_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "warrant": {
      "command": "uvx",
      "args": [
        "warrant-verify==0.9.0"
      ],
      "env": {
        "WARRANT_KEY": "${WARRANT_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=warrant&config=eyJjb21tYW5kIjoidXZ4IiwiYXJncyI6WyJ3YXJyYW50LXZlcmlmeT09MC45LjAiXSwiZW52Ijp7IldBUlJBTlRfS0VZIjoiJHtXQVJSQU5UX0tFWX0ifX0%3D"
}

{
  "servers": {
    "warrant": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "warrant-verify==0.9.0"
      ],
      "env": {
        "WARRANT_KEY": "${WARRANT_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "warrant": {
      "command": "uvx",
      "args": [
        "warrant-verify==0.9.0"
      ],
      "env": {
        "WARRANT_KEY": "${WARRANT_KEY}"
      }
    }
  }
}

extensions:
  "warrant":
    enabled: true
    name: "warrant"
    type: stdio
    cmd: "uvx"
    args:
      - "warrant-verify==0.9.0"
    envs:
      "WARRANT_KEY": "${WARRANT_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${WARRANT_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

dependencies100 · weight 15

pass
deps.known_vulnsno known advisory in 4 resolved packages
n/a
deps.mcp_sdk_versionthe official MCP SDK is not in the dependency graph
pass
deps.resolvable[email protected] resolved: 4 packages

Tool list unknown · checked 2026-10-19 10:20 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-79d-ago

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

Dependencies

[email protected] PyPI3 dependencies, resolved · advisories checked 2026-10-19

No known advisory affects this dependency graph.

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
`warrant-verify`	pypi	0.9.0	–	`WARRANT_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.s0fractal/warrant",
  "title": "Warrant",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.9.0",
  "packages": [
    {
      "version": "0.9.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "warrant-verify",
      "registryType": "pypi",
      "registryBaseUrl": "https://pypi.org",
      "environmentVariables": [
        {
          "name": "WARRANT_STORE",
          "description": "Absolute path to the warrant store this server files into and verifies. Defaults to .warrants relative to the server process's working directory, which an MCP host does not guarantee."
        },
        {
          "name": "WARRANT_KEY",
          "isSecret": true,
          "description": "Ed25519 signing key. If unset, one is generated next to the store on the first filing and the result says so; any process that can read it can sign as this actor."
        },
        {
          "name": "WARRANT_ACTOR",
          "description": "Actor id written into filed warrants. Defaults to mcp-client@<hostname>."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/s0fractal/warrant",
    "source": "github",
    "subfolder": "integrations/mcp-server"
  },
  "websiteUrl": "https://github.com/s0fractal/warrant/tree/master/integrations/mcp-server",
  "description": "Record an agent's decisions with reasons anyone can re-execute offline — verify recomputes them."
}