# Agent Card Health Check (remote · agent-card-health-check.kadopi.workers.dev)

Free no-storage MCP that checks A2A Agent Card connection readiness for authorized targets.

- Trust score: 56/100 (low)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `agent-card-health-check.kadopi.workers.dev`: 56/100 (this document), [markdown](https://verifymcp.io/servers/kadopi-agent-card-health-check/agent-card-health-check.md), [page](https://verifymcp.io/servers/kadopi-agent-card-health-check/agent-card-health-check)

## Channel facts

- Endpoint: `https://agent-card-health-check.kadopi.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 51/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 71 tokens (~71/item across 1 items; 1 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 1 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 1 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Agent Card Health Check MCP server?

Agent Card Health Check is a hosted endpoint at https://agent-card-health-check.kadopi.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http kadopi-agent-card-health-check 'https://agent-card-health-check.kadopi.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "kadopi-agent-card-health-check": {
      "url": "https://agent-card-health-check.kadopi.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "kadopi-agent-card-health-check": {
      "type": "http",
      "url": "https://agent-card-health-check.kadopi.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.kadopi-agent-card-health-check]
url = "https://agent-card-health-check.kadopi.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "kadopi-agent-card-health-check": {
      "type": "remote",
      "url": "https://agent-card-health-check.kadopi.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add kadopi-agent-card-health-check --url 'https://agent-card-health-check.kadopi.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  kadopi-agent-card-health-check:
    url: "https://agent-card-health-check.kadopi.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "kadopi-agent-card-health-check": {
      "Transport": "http",
      "Url": "https://agent-card-health-check.kadopi.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add kadopi-agent-card-health-check -t streamable-http -u 'https://agent-card-health-check.kadopi.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "kadopi-agent-card-health-check": {
      "type": "http",
      "url": "https://agent-card-health-check.kadopi.workers.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-19 (score 56, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 55, +1)

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 54, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 53, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-13 (score 53)

First indexed and scored.

## MCP tools (1)

### `diagnose_agent_card` (~71 tokens)

所有または接続を明示許可されたA2Aエージェントについて、Agent Card宣言と非更新の実接続結果を照合します。

Input parameters:

- `agentCard` (object, required)
- `authorization` (object)
- `authorizedTargetUrl` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/kadopi-agent-card-health-check/agent-card-health-check#diagnostics

## Score history

- 2026-09-20: 56
- 2026-09-19: 56
- 2026-09-18: 55
- 2026-09-17: 55
- 2026-09-16: 54
- 2026-09-15: 54
- 2026-09-14: 53
- 2026-09-13: 53

## Common questions

### What is the Agent Card Health Check MCP server?

Agent Card Health Check is an MCP server listed in the public MCP registry as io.github.kadopi/agent-card-health-check. Free no-storage MCP that checks A2A Agent Card connection readiness for authorized targets. This page covers its hosted endpoint (https://agent-card-health-check.kadopi.workers.dev/mcp).

### Is the Agent Card Health Check MCP server safe to use?

Agent Card Health Check scores 56 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Agent Card Health Check MCP server expose?

Agent Card Health Check exposes 1 tool: diagnose_agent_card. Their descriptions and schemas cost roughly 71 tokens of context every time the server is loaded.

### Does the Agent Card Health Check MCP server require authentication?

No. We connected to Agent Card Health Check without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Agent Card Health Check MCP server still maintained?

Agent Card Health Check is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://agent-card-health-check.kadopi.workers.dev/mcp
- Repository: https://github.com/kadopi/my-projects
- Changelog RSS feed: https://verifymcp.io/servers/kadopi-agent-card-health-check/agent-card-health-check.xml
- Changelog JSON feed: https://verifymcp.io/servers/kadopi-agent-card-health-check/agent-card-health-check.json
- HTML version of this page: https://verifymcp.io/servers/kadopi-agent-card-health-check/agent-card-health-check