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OPA MCP

OCI · DOCKER.IO/ORYGN/OPA-MCP:0.2.1 · 2 COMPONENTS · SCANNED AUG 4

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

−2 this week 44 Trust /100
Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security0
  • Malware scan not yet available for this package.Unverified
  • CVE data not yet available for this package.Unverified
  • Install-script risk not yet assessed.Unverified
  • Dependency-health data not yet available.Unverified
Provenance & Transparency45
Schema Quality & AI Usability79
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 10903 tokens (~198/item across 55 items; 52 tools + 3 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management30
  • Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Unverified: 1 category

A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

oci · docker.io/orygn/opa-mcp:0.2.1

# add to Claude Code
claude mcp add orygnscode-opa-mcp -- docker run --rm -i docker.io/orygn/opa-mcp:0.2.1
# add to Codex CLI
codex mcp add orygnscode-opa-mcp -- docker run --rm -i docker.io/orygn/opa-mcp:0.2.1
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "orygnscode-opa-mcp": {
      "type": "local",
      "command": [
        "docker",
        "run",
        "--rm",
        "-i",
        "docker.io/orygn/opa-mcp:0.2.1"
      ],
      "enabled": true
    }
  }
}
# ~/.hermes/config.yaml
mcp_servers:
  orygnscode-opa-mcp:
    command: "docker"
    args: ["run", "--rm", "-i", "docker.io/orygn/opa-mcp:0.2.1"]
// mcp.json
{
  "mcpServers": {
    "orygnscode-opa-mcp": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "docker.io/orygn/opa-mcp:0.2.1"
      ]
    }
  }
}
Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 3 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

  • 2 Aug 26 +3
    • Stability: unverified → 0.23 functional
  • 31 Jul 26 −6
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 27 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 26 Jul 26 46

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 4 Aug 2026 · Analysed oci/docker.io/orygn/opa-mcp:0.2.1

Provenance none

Ecosystem: oci · Outcome: none

Reason: no_attestation

MCP tools — 52 exposed · ~10,397 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens
rego_test_multiroot ~561

Run `opa test` once per root and aggregate results. Solves the package-conflict problem that occurs when `opa test .` is run on a repo with multiple independent package namespaces (OPA issue #4724). Two modes: `explicit` (supply root list with optional per-root `include` paths for shared libraries) and `scan` (auto-discover leaf test roots using the leaf rule -- a directory is a root only if it directly contains `*_test.rego` files and none of its eligible subdirectories do, preventing OPA's automatic recursion from double-running tests). Use `sharedPaths` in scan mode to add shared library directories to every root's invocation without including them in discovery. Coverage and threshold work per-root; `overallCoveragePct` is the mean across roots that have coverage data.

NameTypeReqDescription
coveragebooleanInclude per-line coverage data per root. Switches output to coverage-report mode: test record counts are not available, but `coverage`, `coveragePct`, and `overallCoveragePct` fields are populated.
ignorePatternsarrayAdditional directory name patterns to skip during scan (e.g., ["vendor", "*.generated"]). Supports `*` wildcards. Only used with `scanDir`.
maxDepthintegerMaximum directory depth to scan. Default: 10. Only used with `scanDir`.
maxRootsintegerMaximum number of test roots allowed. Returns INVALID_INPUT if scan finds more. Default: 50. Only used with `scanDir`.
rootsarrayExplicit list of test root directories. Use when roots are known upfront or when scan mode cannot determine the correct roots. Mutually exclusive with `scanDir`.
runPatternstringRun only tests whose names match this regular expression (passed as `--run` to each root).
scanDirstringTop-level directory to scan for test roots. Uses the leaf rule: a directory is a root only if it directly contains `*_test.rego` files and none of its eligible subdirectories do. Mutually exclusive w…
sharedPathsarrayPaths added to every root's `opa test` invocation and excluded from auto-discovery. Use for shared library directories that all roots import from.
thresholdnumberMinimum coverage percentage required per root (0-100). Roots below threshold have `thresholdMet: false` in their result. Implicitly enables coverage-report output mode.
varValuesbooleanInclude local variable bindings in trace output (`--var-values`). Only useful with `verbose: true`.
verbosebooleanEmit per-test pass/fail details for each root.

No output schema declared.

No examples provided.

rego_verify ~239

Formally verify a property about a Rego rule using SMT solving (Microsoft Z3). Unlike testing, this checks ALL possible inputs and either proves the property holds or returns a concrete counterexample input that falsifies it. Supports equality, comparison, startswith, endswith, contains, and simple regex.match patterns (prefix: ^lit.*, suffix: .*lit$, exact: ^lit$, contains: .*lit.*, wildcard: .*). Complex regex patterns (character classes, quantifiers, alternation) return INCONCLUSIVE. Also reports INCONCLUSIVE for negation-as-failure (not), comprehensions, and other unsupported constructs.

NameTypeReqDescription
kindstringyesProperty to prove: always_true - rule is true for every possible input (finds inputs that violate this) never_true - rule is never true for any input (finds inputs that trigger it) satisfiab…
rulestringyesName of the rule to verify (e.g. "allow", "deny").
sourcestringyesRego source to verify.

No output schema declared.

No examples provided.