OPA MCP

Author, validate, debug, and explain OPA Rego policies through any MCP-compatible client.

What does this entry provide?

OPA MCP is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 78/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding OPA MCP to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.

Snapshot facts

Source: Official MCP Registry
Quality: 78/100
Install method: npm
Repo: OrygnsCode/opa-mcp-server
Repo updated: Oct 23, 2026

Install command

npx -y @orygn/opa-mcp@0.9.1

Install method: npm

Review the upstream source before running this command.

GitHub project Homepage

Quality

Repo stars

Repo updated

Oct 23, 2026

How is this score calculated?

Weighted across six dimensions, scored 0-100.
Provenance (25): listed in an official or curated registry.
Installability (25): a runnable install command beats a declared transport, which beats a source checkout.
Maintenance (20): recency of the last push; archived entries score zero here.
Adoption (20): repository stars on a log curve.
Documentation (10) and description quality (10): parsed manifest or SKILL.md frontmatter, and a real description rather than a placeholder.

MCP manifest

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-10-23T22:24:00.457871Z",
      "publishedAt": "2026-10-23T22:24:00.457871Z",
      "statusChangedAt": "2026-10-23T22:24:00.457871Z"
    }
  },
  "server": {
    "name": "io.github.OrygnsCode/opa-mcp",
    "_meta": {
      "io.modelcontextprotocol.registry/publisher-provided": {
        "tool": "manual",
        "version": "0.9.1"
      }
    },
    "title": "OPA MCP",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "version": "0.9.1",
    "packages": [
      {
        "version": "0.9.1",
        "transport": {
          "type": "stdio"
        },
        "identifier": "@orygn/opa-mcp",
        "runtimeHint": "npx",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "OPA_URL",
            "default": "http://localhost:8181",
            "description": "Base URL of a running OPA server. Required only for opa_* runtime tools, not for rego_* language tools."
          },
          {
            "name": "OPA_TOKEN",
            "isSecret": true,
            "description": "Bearer token for OPA running with --authentication=token."
          },
          {
            "name": "OPA_BINARY",
            "default": "opa",
            "description": "Path to the opa binary. Defaults to 'opa' on PATH."
          },
          {
            "name": "REGAL_BINARY",
            "default": "regal",
            "description": "Path to the regal binary (optional; used by rego_lint, rego_security_audit and rego_fix). Defaults to 'regal' on PATH."
          },
          {
            "name": "CONFTEST_BINARY",
            "default": "conftest",
            "description": "Path to the conftest binary (optional, used by conftest_* tools). Defaults to 'conftest' on PATH."
          },
          {
            "name": "OPA_MCP_ALLOWED_PATHS",
            "description": "Comma-separated list of root directories tools may read/write. When unset, file-based tools refuse to access the disk."
          },
          {
            "name": "GITHUB_TOKEN",
            "isSecret": true,
            "description": "GitHub personal access token with the \"gist\" scope. Required only for rego_playground_share."
          }
        ]
      },
      {
        "transport": {
          "type": "stdio"
        },
        "identifier": "docker.io/orygn/opa-mcp:0.9.1",
        "registryType": "oci",
        "environmentVariables": [
          {
            "name": "OPA_URL",
            "default": "http://localhost:8181",
            "description": "Base URL of a running OPA server."
          },
          {
            "name": "OPA_TOKEN",
            "isSecret": true,
            "description": "Bearer token for OPA authentication."
          },
          {
            "name": "GITHUB_TOKEN",
            "isSecret": true,
            "description": "GitHub personal access token with the \"gist\" scope. Required only for rego_playground_share."
          }
        ]
      }
    ],
    "repository": {
      "url": "https://github.com/OrygnsCode/opa-mcp-server",
      "source": "github"
    },
    "websiteUrl": "https://orygn.tech",
    "description": "Author, validate, debug, and explain OPA Rego policies through any MCP-compatible client."
  }
}

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