# PlyMove (remote · mcp.plymove.com)

Pedagogical chess intelligence for AI agents: explain positions and games for a target Elo.

- Trust score: 78/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-24

## Components

- remote · `mcp.plymove.com`: 78/100 (this document), [markdown](https://verifymcp.io/servers/com-plymove-mcp/mcp.md), [page](https://verifymcp.io/servers/com-plymove-mcp/mcp)

## Channel facts

- Endpoint: `https://mcp.plymove.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-09-24.

- **Endpoint Security**: 63/100
  - 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 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**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 622 tokens (~103/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 97/100
  - Stability observed for 29 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 98/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 93% 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 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 40/100
  - Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28.

## Install

### How do I install the PlyMove MCP server?

PlyMove is a hosted endpoint at https://mcp.plymove.com/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 com-plymove-mcp 'https://mcp.plymove.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-plymove-mcp": {
      "url": "https://mcp.plymove.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-plymove-mcp": {
      "type": "http",
      "url": "https://mcp.plymove.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-plymove-mcp]
url = "https://mcp.plymove.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-plymove-mcp": {
      "type": "remote",
      "url": "https://mcp.plymove.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-plymove-mcp --url 'https://mcp.plymove.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-plymove-mcp:
    url: "https://mcp.plymove.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-plymove-mcp": {
      "Transport": "http",
      "Url": "https://mcp.plymove.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-plymove-mcp -t streamable-http -u 'https://mcp.plymove.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-plymove-mcp": {
      "type": "http",
      "url": "https://mcp.plymove.com/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.

### 2026-09-23 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-21 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 74, +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.

### 2026-09-13 (score 73, +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 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-08 (score 71, +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.

## MCP tools (6)

### `build_game_storyboard` (~170 tokens)

Build a verified Elo-aware game storyboard: opening, story arc, ranked moments, branches, and main lesson. Read-only analysis — does not modify user files or external systems.

Input parameters:

- `engine_depth` (integer): Stockfish depth for deep analysis
- `include_rendered_story` (boolean): Include accessible recap prose
- `language` (string): Output language (e.g. en)
- `max_moments` (integer): Maximum storyboard chapters
- `output_format` (string): Return annotated PGN, JSON storyboard, or both (default both).
- `pgn` (string, required): Full game PGN
- `shallow_depth` (integer): Stockfish depth for selective shallow scan (defaults to min(engine_depth, 10))
- `target_elo` (integer, required): Learner Elo rating

Output parameters:

- `analysis_id` (string)
- `annotated_pgn` (string): Legal annotated PGN when output_format includes annotated_pgn or both.
- `build` (object)
- `diagnostics` (object)
- `engine` (object)
- `game` (object)
- `human_model` (object)
- `human_model_available` (boolean)
- `kind` (string)
- `main_lesson` (string)
- `moments` (array)
- `opening` (object)
- `rendered_story` (string)
- `story_arc` (object)
- `target_elo` (integer)
- `verification` (object)

### `explain_game` (~78 tokens)

Legacy alias for build_game_storyboard — Elo-aware game storyboard (read-only analysis; does not write files).

Input parameters:

- `pgn` (string, required): Full game PGN
- `target_elo` (integer, required): Learner Elo rating
- `verbosity` (string): Storyboard chapter count: minimal (~3), standard (~5), detailed (~8).

Output parameters:

- `analysis_id` (string)
- `annotated_pgn` (string): Legal annotated PGN when output_format includes annotated_pgn or both.
- `build` (object)
- `diagnostics` (object)
- `engine` (object)
- `game` (object)
- `human_model` (object)
- `human_model_available` (boolean)
- `kind` (string)
- `main_lesson` (string)
- `moments` (array)
- `opening` (object)
- `rendered_story` (string)
- `story_arc` (object)
- `target_elo` (integer)
- `verification` (object)

### `find_teaching_moments` (~80 tokens)

Legacy alias for build_game_storyboard — ranked storyboard chapters from a PGN (read-only analysis).

Input parameters:

- `pgn` (string, required): Full game PGN
- `target_elo` (integer, required): Learner Elo rating
- `verbosity` (string): Storyboard chapter count: minimal (~3), standard (~5), detailed (~8).

Output parameters:

- `analysis_id` (string)
- `annotated_pgn` (string): Legal annotated PGN when output_format includes annotated_pgn or both.
- `build` (object)
- `diagnostics` (object)
- `engine` (object)
- `game` (object)
- `human_model` (object)
- `human_model_available` (boolean)
- `kind` (string)
- `main_lesson` (string)
- `moments` (array)
- `opening` (object)
- `rendered_story` (string)
- `story_arc` (object)
- `target_elo` (integer)
- `verification` (object)

### `explain_position` (~45 tokens)

Explain a single position for a target learner Elo (read-only analysis).

Input parameters:

- `fen` (string, required): Position FEN
- `target_elo` (integer, required): Learner Elo rating

Output parameters:

- `diagnostics` (object)
- `evidence` (object)
- `explanation` (string)
- `fen` (string)
- `schema` (string)
- `target_elo` (integer)
- `task` (object)
- `teaching_reason` (string)

### `compare_moves` (~56 tokens)

Compare candidate moves at a position for a learner (read-only analysis).

Input parameters:

- `fen` (string, required): Position FEN
- `moves` (array, required): Candidate moves in SAN
- `target_elo` (integer, required): Learner Elo rating

Output parameters:

- `comparisons` (array)
- `diagnostics` (object)
- `fen` (string)
- `schema` (string)
- `target_elo` (integer)

### `analyze_what_if` (~193 tokens)

Analyze a user-requested alternative at a mainline decision point: legal SAN validation, Stockfish continuation, Maia naturalness, teaching point, and annotated RAV PGN (read-only).

Input parameters:

- `alternative_move_san` (string, required): Requested alternative in SAN — never auto-substituted
- `analysis_id` (string): Stored analysis id when PGN is omitted
- `analysis_profile` (string): Time/depth budget profile
- `anchor_ply` (integer): Mainline ply of the played move (decision point)
- `engine_depth` (integer)
- `max_branch_plies` (integer): Max continuation plies
- `move_label` (string): Human move label e.g. 17...Be6 or 24.Rxd4
- `pgn` (string): Full game PGN (or use analysis_id from a prior storyboard)
- `target_elo` (integer, required)

Output parameters:

- `alternative_move` (string)
- `anchor_ply` (integer)
- `branch_semantically_attached` (boolean)
- `branches_legal` (boolean)
- `continuation_sans` (array)
- `diagnostics` (object)
- `evaluation_delta_cp` (integer)
- `fen_before` (string)
- `kind` (string)
- `maia_probability` (number)
- `mainline_preserved` (boolean)
- `move_label` (string)
- `played_move` (string)
- `rav_pgn` (string)
- `schema` (string)
- `target_elo` (integer)
- `teaching_point` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-plymove-mcp/mcp#diagnostics

## Score history

- 2026-09-24: 78
- 2026-09-23: 78
- 2026-09-22: 77
- 2026-09-21: 77
- 2026-09-20: 76
- 2026-09-19: 76
- 2026-09-18: 75
- 2026-09-17: 75
- 2026-09-16: 74
- 2026-09-15: 74
- 2026-09-14: 73
- 2026-09-13: 73
- 2026-09-12: 72
- 2026-09-11: 72
- 2026-09-10: 72
- 2026-09-09: 71
- 2026-09-08: 71
- 2026-09-07: 70
- 2026-09-06: 70
- 2026-09-05: 69
- 2026-09-04: 69
- 2026-09-03: 68
- 2026-09-02: 68
- 2026-09-01: 67
- 2026-08-31: 67
- 2026-08-30: 67
- 2026-08-29: 58
- 2026-08-28: 57
- 2026-08-27: 57
- 2026-08-26: 56

## Common questions

### What is the PlyMove MCP server?

PlyMove is an MCP server listed in the public MCP registry as com.plymove/mcp. Pedagogical chess intelligence for AI agents: explain positions and games for a target Elo. This page covers its hosted endpoint (https://mcp.plymove.com/mcp).

### Is the PlyMove MCP server safe to use?

PlyMove scores 78 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 PlyMove MCP server expose?

PlyMove exposes 6 tools: build_game_storyboard, explain_game, find_teaching_moments, explain_position, compare_moves, analyze_what_if. Their descriptions and schemas cost roughly 622 tokens of context every time the server is loaded.

### Does the PlyMove MCP server require authentication?

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

### Is the PlyMove MCP server still maintained?

PlyMove is still listed as active in the MCP registry. We last reached this channel on 24 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://mcp.plymove.com/mcp
- Website: https://plymove.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-plymove-mcp/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-plymove-mcp/mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-plymove-mcp/mcp