mcp-armor

OCI · GHCR.IO/STUDIOMEYER-IO/MCP-ARMOR:0.7.0 · SCANNED AUG 3

Security sidecar for MCP servers: prompt-injection scan, Ed25519 verify, tools/list drift. 10 tools.

Available components

oci · ghcr.io/studiomeyer-io/mcp-armor:0.7.0 34

+23 this week 34 34 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

Source repository is publicly reachable at the declared URL. View diagnostics → Pass
Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
Clear OSI-approved license (MIT).Pass
Actively maintained (last published 65 days ago).Pass
Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail

Schema Quality & AI Usability49

AI-judged instruction clarity (fair).Partial
Tool/resource definitions use about 544 tokens (~54/item across 10 items; 10 tools + 0 resources), lean.Pass
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management23

Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial

Tool Coverage71

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
13% of tool parameters carry a description.Partial

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 · ghcr.io/studiomeyer-io/mcp-armor:0.7.0

Claude Codex opencode Hermes Other

# add to Claude Code

claude mcp add io-studiomeyer-armor -- docker run --rm -i ghcr.io/studiomeyer-io/mcp-armor:0.7.0

# add to Codex CLI

codex mcp add io-studiomeyer-armor -- docker run --rm -i ghcr.io/studiomeyer-io/mcp-armor:0.7.0

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-studiomeyer-armor": {
      "type": "local",
      "command": [
        "docker",
        "run",
        "--rm",
        "-i",
        "ghcr.io/studiomeyer-io/mcp-armor:0.7.0"
      ],
      "enabled": true
    }
  }
}

# ~/.hermes/config.yaml

mcp_servers:
  io-studiomeyer-armor:
    command: "docker"
    args: ["run", "--rm", "-i", "ghcr.io/studiomeyer-io/mcp-armor:0.7.0"]

// mcp.json

{
  "mcpServers": {
    "io-studiomeyer-armor": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "ghcr.io/studiomeyer-io/mcp-armor:0.7.0"
      ]
    }
  }
}

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 +3
- Stability: unverified → 0.23 ▲ functional
1 Aug 26 −3
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
28 Jul 26 +23
- Tool coverage: unverified → 100 ▲ functional
- First check of Schema quality: fair functional
- First check of Schema quality: pass functional
- First check of Tool coverage: 13 functional
- First check of Schema quality: fail functional
26 Jul 26 11

First indexed and scored.

Show 3 earlier entries Hide earlier entries

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 3 Aug 2026 · Analysed oci/ghcr.io/studiomeyer-io/mcp-armor:0.7.0

Provenance none

Ecosystem: oci · Outcome: none

Reason: no_attestation

MCP tools — 10 exposed · ~544 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

armor_check_cve ~42

Look up a server name in the curated CVE feed and return affected entries.

Input Output Examples

Name	Type	Req	Description
server_name	string	yes	—
server_version	string	—	—

No output schema declared.

No examples provided.

armor_get_drift_history ~119

v0.5 Layer 7 — Inspect the tools-list schema-drift baselines persisted by `mcp-armor wrap`. Read-only. Optional `program` arg narrows the report to one upstream; omit it to list every pinned baseline. Closes the Rug-Pull / Silent-Redefinition threat class (Invariant Labs, CyberArk Full-Schema Poisoning).

Input Output Examples

Name	Type	Req	Description
program	string	—	When set, return the full per-tool fingerprint detail for one program. When omitted, return a summary list of every pinned baseline.

No output schema declared.

No examples provided.

armor_get_keystore ~63

v0.2 — List pinned TOFU maintainer public keys (server_name + fingerprint + pinned_at_iso). Read-only inspection of the keystore configured at sidecar startup (no caller-supplied path — operator-only via `--keystore` flag).

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

armor_get_policy ~27

Return the active policy: file path, rules, fail mode, scan flags, version.

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

armor_list_blocked ~37

Read recent blocked tool calls from the in-memory ring buffer.

Input Output Examples

Name	Type	Req	Description
limit	integer	—	—
since_iso	string	—	—

No output schema declared.

No examples provided.

armor_rekor_lookup ~78

v0.2 — Query the Sigstore Rekor transparency log for inclusion of a manifest's artifact hash. Requires --features sigstore-bridge at build time. Network call.

Input Output Examples

Name	Type	Req	Description
rekor_url	string	—	Override Rekor endpoint; defaults to https://rekor.sigstore.dev
tools_list_response	object	yes	—

No output schema declared.

No examples provided.

armor_scan_payload ~33

Scan an arbitrary payload for prompt-injection patterns.

Input Output Examples

Name	Type	Req	Description
direction	string	yes	—
payload	string	yes	—

No output schema declared.

No examples provided.

armor_simulate_attack ~39

Run the static simulate_payload for a CVE through the scanner. Never spawns the upstream binary.

Input Output Examples

Name	Type	Req	Description
cve_id	string	yes	—

No output schema declared.

No examples provided.

armor_verify_bundle ~44

v0.2 — Parse a cosign sigstore.json bundle and structurally verify the Rekor SignedEntryTimestamp shape. Offline.

Input Output Examples

Name	Type	Req	Description
bundle_json	string	yes	—

No output schema declared.

No examples provided.

armor_verify_manifest ~62

Verify Ed25519 signature over canonical-JSON form of a tools/list response.

Input Output Examples

Name	Type	Req	Description
public_key_b64	string	yes	—
signature_b64	string	yes	—
signed_at_iso	string	—	—
tools_list_response	object	yes	—

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

26 Jul 3 Aug