mcp-opa-authz MCP

An MCP server that provides LLM agents with definitive authorization answers by evaluating Rego policy code in-process via OPA or querying an external OpenID AuthZEN 1.0 Policy Decision Point (PDP). It distinguishes between explicit denials and undefined policies, offering tools for evaluation, batch checking, and policy discovery.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by kanywst

Vendor documentation

What you can do with it

Evaluate Rego policy in-process to determine if an action is allowed
Query an AuthZEN PDP for real-time authorization decisions
Batch evaluate permissions for multiple subjects and resources
Discover available endpoints on a connected PDP

Source and maintenance

Community listingRegistry 0.6.2

mcp-registry: io.github.kanywst/mcp-opa-authz@0.6.2 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

ghcr.io/kanywst/mcp-opa-authz:0.6.2

oci

ghcr.io/kanywst/mcp-opa-authz:0.6.2 package definition

{
  "transport": "stdio",
  "identifier": "ghcr.io/kanywst/mcp-opa-authz:0.6.2",
  "registryType": "oci",
  "environmentVariables": [
    {
      "name": "AUTHZEN_PDP_URL",
      "format": "string",
      "description": "Default AuthZEN Access Evaluation endpoint, e.g. https://pdp.example.com/access/v1/evaluation. Only evaluate_policy works without it."
    },
    {
      "name": "AUTHZEN_PDP_TOKEN",
      "format": "string",
      "description": "Authorization header value for the PDP. A value with no scheme is sent as \"Bearer <token>\"."
    },
    {
      "name": "AUTHZEN_PDP_TIMEOUT",
      "format": "string",
      "description": "Per-request timeout for PDP calls, as a Go duration. Default 10s."
    },
    {
      "name": "MCP_OPA_EVAL_TIMEOUT",
      "format": "string",
      "description": "Wall-clock limit on a single Rego evaluation, as a Go duration. Default 5s."
    },
    {
      "name": "MCP_OPA_ALLOW_NETWORK_BUILTINS",
      "format": "boolean",
      "description": "Re-enable http.send, net.lookup_ip_addr and opa.runtime inside evaluated policies. Off by default: policy source evaluated here comes from a model and runs inside the server process."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "mcp-opa-authz-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "AUTHZEN_PDP_URL=<YOUR_AUTHZEN_PDP_URL>",
        "-e",
        "AUTHZEN_PDP_TOKEN=<YOUR_AUTHZEN_PDP_TOKEN>",
        "-e",
        "AUTHZEN_PDP_TIMEOUT=<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "-e",
        "MCP_OPA_EVAL_TIMEOUT=<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "-e",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS=<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>",
        "ghcr.io/kanywst/mcp-opa-authz:0.6.2"
      ],
      "env": {
        "AUTHZEN_PDP_URL": "<YOUR_AUTHZEN_PDP_URL>",
        "AUTHZEN_PDP_TOKEN": "<YOUR_AUTHZEN_PDP_TOKEN>",
        "AUTHZEN_PDP_TIMEOUT": "<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "MCP_OPA_EVAL_TIMEOUT": "<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS": "<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "mcp-opa-authz-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "AUTHZEN_PDP_URL=<YOUR_AUTHZEN_PDP_URL>",
        "-e",
        "AUTHZEN_PDP_TOKEN=<YOUR_AUTHZEN_PDP_TOKEN>",
        "-e",
        "AUTHZEN_PDP_TIMEOUT=<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "-e",
        "MCP_OPA_EVAL_TIMEOUT=<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "-e",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS=<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>",
        "ghcr.io/kanywst/mcp-opa-authz:0.6.2"
      ],
      "env": {
        "AUTHZEN_PDP_URL": "<YOUR_AUTHZEN_PDP_URL>",
        "AUTHZEN_PDP_TOKEN": "<YOUR_AUTHZEN_PDP_TOKEN>",
        "AUTHZEN_PDP_TIMEOUT": "<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "MCP_OPA_EVAL_TIMEOUT": "<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS": "<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "mcp-opa-authz-mcp": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "AUTHZEN_PDP_URL=<YOUR_AUTHZEN_PDP_URL>",
        "-e",
        "AUTHZEN_PDP_TOKEN=<YOUR_AUTHZEN_PDP_TOKEN>",
        "-e",
        "AUTHZEN_PDP_TIMEOUT=<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "-e",
        "MCP_OPA_EVAL_TIMEOUT=<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "-e",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS=<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>",
        "ghcr.io/kanywst/mcp-opa-authz:0.6.2"
      ],
      "env": {
        "AUTHZEN_PDP_URL": "<YOUR_AUTHZEN_PDP_URL>",
        "AUTHZEN_PDP_TOKEN": "<YOUR_AUTHZEN_PDP_TOKEN>",
        "AUTHZEN_PDP_TIMEOUT": "<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "MCP_OPA_EVAL_TIMEOUT": "<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS": "<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "mcp-opa-authz-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "AUTHZEN_PDP_URL=<YOUR_AUTHZEN_PDP_URL>",
        "-e",
        "AUTHZEN_PDP_TOKEN=<YOUR_AUTHZEN_PDP_TOKEN>",
        "-e",
        "AUTHZEN_PDP_TIMEOUT=<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "-e",
        "MCP_OPA_EVAL_TIMEOUT=<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "-e",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS=<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>",
        "ghcr.io/kanywst/mcp-opa-authz:0.6.2"
      ],
      "env": {
        "AUTHZEN_PDP_URL": "<YOUR_AUTHZEN_PDP_URL>",
        "AUTHZEN_PDP_TOKEN": "<YOUR_AUTHZEN_PDP_TOKEN>",
        "AUTHZEN_PDP_TIMEOUT": "<YOUR_AUTHZEN_PDP_TIMEOUT>",
        "MCP_OPA_EVAL_TIMEOUT": "<YOUR_MCP_OPA_EVAL_TIMEOUT>",
        "MCP_OPA_ALLOW_NETWORK_BUILTINS": "<YOUR_MCP_OPA_ALLOW_NETWORK_BUILTINS>"
      }
    }
  }
}

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