# Plato's Kallipolis (remote · platoskallipolis.com)

Read-only MCP tools for AI agent discovery, structured resources, and NIULAI information.

- Trust score: 80/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `platoskallipolis.com`: 80/100 (this document), [markdown](https://verifymcp.io/servers/handongzhen101-jpg-platos-kallipolis/api-mcp.md), [page](https://verifymcp.io/servers/handongzhen101-jpg-platos-kallipolis/api-mcp)

## Channel facts

- Endpoint: `https://platoskallipolis.com/api/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**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - 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**: 78/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 549 tokens (~49/item across 11 items; 6 tools + 5 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 87/100
  - Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 76/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 14% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Plato's Kallipolis MCP server?

Plato's Kallipolis is a hosted endpoint at https://platoskallipolis.com/api/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 handongzhen101-jpg-platos-kallipolis 'https://platoskallipolis.com/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "handongzhen101-jpg-platos-kallipolis": {
      "url": "https://platoskallipolis.com/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "handongzhen101-jpg-platos-kallipolis": {
      "type": "http",
      "url": "https://platoskallipolis.com/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.handongzhen101-jpg-platos-kallipolis]
url = "https://platoskallipolis.com/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "handongzhen101-jpg-platos-kallipolis": {
      "type": "remote",
      "url": "https://platoskallipolis.com/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add handongzhen101-jpg-platos-kallipolis --url 'https://platoskallipolis.com/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  handongzhen101-jpg-platos-kallipolis:
    url: "https://platoskallipolis.com/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "handongzhen101-jpg-platos-kallipolis": {
      "Transport": "http",
      "Url": "https://platoskallipolis.com/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add handongzhen101-jpg-platos-kallipolis -t streamable-http -u 'https://platoskallipolis.com/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "handongzhen101-jpg-platos-kallipolis": {
      "type": "http",
      "url": "https://platoskallipolis.com/api/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 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-09 (score 75, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional regression] Schema quality: 33 → 49
- [functional] New tool “get_resource”
- [functional] New tool “search_resources”

### 2026-09-07 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-05 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (6)

### `search_agents` (~40 tokens)

Search Kallipolis Agents

Search the public agent registry by capability and protocol. Preview data only.

Input parameters:

- `capability` (string): Capability identifier or substring
- `protocol` (string)

Output parameters:

- `data` (array)
- `provenance` (object)
- `schema` (string)

### `search_resources` (~188 tokens)

Search Kallipolis Resources

Search 350 prepared structured resource profiles by category, keyword or declared source hostname without contacting external providers.

Input parameters:

- `category` (string)
- `cursor` (integer)
- `limit` (integer)
- `q` (string): Up to 8 whitespace-separated terms within 100 UTF-16 code units including outer whitespace; all terms must match literal case-insensitive substrings across public fields, declared publisher names or…

Output parameters:

- `boundaries` (object)
- `data` (array)
- `page` (object)
- `provenance` (object)
- `schema` (string)

### `get_resource` (~38 tokens)

Get a Kallipolis Resource

Retrieve one complete prepared resource profile, including evidence-backed facts and primary-source provenance, by its stable resource ID.

Input parameters:

- `resourceId` (string, required)

Output parameters:

- `boundaries` (object)
- `citation` (object)
- `data` (object)
- `provenance` (object)
- `schema` (string)

### `get_niulai_info` (~40 tokens)

Get NIULAI Community Asset Information

Return publisher-declared Base network, contract, claim, community-role, custody, and risk-boundary information for 牛来 (NIULAI).

Output parameters:

- `contracts` (object)
- `exclusions` (array)
- `network` (object)
- `provenance` (object)
- `roles` (array)
- `schema` (string)
- `symbol` (string)

### `get_growth_metrics` (~27 tokens)

Get Growth Measurement State

Return enabled, partial, contract-only, and unavailable growth metrics with privacy and interpretation boundaries.

Output parameters:

- `interpretation` (object)
- `metrics` (object)
- `privacy` (object)
- `schema` (string)

### `compile_query_plan` (~87 tokens)

Compile a Public Query Plan

Normalize a public-data query into a typed evidence, freshness, latency, result, and cost plan. Compilation does not execute retrieval or contact providers.

Input parameters:

- `evidence` (object)
- `freshness` (object)
- `intent` (string, required)
- `limits` (object)
- `output` (object)
- `policy` (object)
- `sources` (array)

Output parameters:

- `executionAvailable` (boolean)
- `plan` (object)
- `planId` (string)
- `provenance` (object)
- `schema` (string)
- `state` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/handongzhen101-jpg-platos-kallipolis/api-mcp#diagnostics

## Score history

- 2026-09-20: 80
- 2026-09-19: 80
- 2026-09-18: 79
- 2026-09-17: 79
- 2026-09-16: 78
- 2026-09-15: 78
- 2026-09-14: 78
- 2026-09-13: 77
- 2026-09-12: 77
- 2026-09-11: 76
- 2026-09-10: 76
- 2026-09-09: 75
- 2026-09-08: 74
- 2026-09-07: 74
- 2026-09-06: 73
- 2026-09-05: 73
- 2026-09-04: 72
- 2026-09-03: 72
- 2026-09-02: 72
- 2026-09-01: 71
- 2026-08-31: 71
- 2026-08-30: 70
- 2026-08-29: 70
- 2026-08-28: 69
- 2026-08-27: 69
- 2026-08-26: 69
- 2026-08-25: 67

## Common questions

### What is the Plato's Kallipolis MCP server?

Plato's Kallipolis is an MCP server listed in the public MCP registry as io.github.handongzhen101-jpg/platos-kallipolis. Read-only MCP tools for AI agent discovery, structured resources, and NIULAI information. This page covers its hosted endpoint (https://platoskallipolis.com/api/mcp).

### Is the Plato's Kallipolis MCP server safe to use?

Plato's Kallipolis scores 80 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 Plato's Kallipolis MCP server expose?

Plato's Kallipolis exposes 6 tools: search_agents, search_resources, get_resource, get_niulai_info, get_growth_metrics, compile_query_plan. Their descriptions and schemas cost roughly 420 tokens of context every time the server is loaded.

### Does the Plato's Kallipolis MCP server require authentication?

No. We connected to Plato's Kallipolis without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Plato's Kallipolis MCP server still maintained?

Plato's Kallipolis 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://platoskallipolis.com/api/mcp
- Repository: https://github.com/handongzhen101-jpg/platos-kallipolis
- Website: https://platoskallipolis.com/en/about
- Changelog RSS feed: https://verifymcp.io/servers/handongzhen101-jpg-platos-kallipolis/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/handongzhen101-jpg-platos-kallipolis/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/handongzhen101-jpg-platos-kallipolis/api-mcp