# spine_analyze_json

Read-only Spine JSON inspection tool. Use this to list skeleton metadata, bones, slots, skins, attachments, animations, and inferred common roles such as body, head, tail, eyes, paws, and logo before generating animation keyframes. Do not use it to modify files, call Spine CLI, export, import, or automate the Spine UI.

Agent View of the PolicyLayer registry record for `spine_analyze_json`. HTML page: https://policylayer.com/tools/1425sd-spine-mcp/spine-analyze-json

## Facts

- Tool: `spine_analyze_json`
- Server: Spine (`1425sd/spine-mcp`) — https://policylayer.com/tools/1425sd-spine-mcp.md
- Homepage: https://github.com/1425sd/spine-MCP
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "spine_analyze_json",
    "arguments": {}
  }
}
```

## Why spine_analyze_json is rated Low

This is a read-only inspection utility that retrieves and queries data from Spine JSON files. It performs no modifications, deletions, executions, or financial operations. The explicit read-only designation and prohibition against modifications confirm it belongs in the Read category with low severity since it only returns data to the user.

From the tool's own definition: "Tool description states 'Read-only Spine JSON inspection tool' and 'Do not use it to modify files, call Spine CLI, export, import, or automate the Spine UI.' The tool is explicitly designed to 'list skeleton metadata, bones, slots, skins, attachments,…"

## Use case

AI agents call spine_analyze_json to retrieve information from Spine without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Spine:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "spine_analyze_json": {}
  }
}
```

## Other tools on Spine (15)

- `spine_build_animation_from_json` — Execute — https://policylayer.com/tools/1425sd-spine-mcp/spine-build-animation-from-json.md
- `spine_clean` — Execute — https://policylayer.com/tools/1425sd-spine-mcp/spine-clean.md
- `spine_learn_from_corpus` — Execute — https://policylayer.com/tools/1425sd-spine-mcp/spine-learn-from-corpus.md
- `spine_open_project` — Execute — https://policylayer.com/tools/1425sd-spine-mcp/spine-open-project.md
- `spine_get_generation_guide` — Read — https://policylayer.com/tools/1425sd-spine-mcp/spine-get-generation-guide.md
- `spine_info` — Read — https://policylayer.com/tools/1425sd-spine-mcp/spine-info.md
- `spine_recommend_animation_params` — Read — https://policylayer.com/tools/1425sd-spine-mcp/spine-recommend-animation-params.md
- `spine_scan_corpus` — Read — https://policylayer.com/tools/1425sd-spine-mcp/spine-scan-corpus.md
- `spine_add_simple_animation` — Write — https://policylayer.com/tools/1425sd-spine-mcp/spine-add-simple-animation.md
- `spine_build_animation_from_existing_project` — Write — https://policylayer.com/tools/1425sd-spine-mcp/spine-build-animation-from-existing-project.md
- `spine_control_bones` — Write — https://policylayer.com/tools/1425sd-spine-mcp/spine-control-bones.md
- `spine_create_loading_animation_preset` — Write — https://policylayer.com/tools/1425sd-spine-mcp/spine-create-loading-animation-preset.md
- `spine_export` — Write — https://policylayer.com/tools/1425sd-spine-mcp/spine-export.md
- `spine_generate_animation_json` — Write — https://policylayer.com/tools/1425sd-spine-mcp/spine-generate-animation-json.md
- `spine_import_json` — Write — https://policylayer.com/tools/1425sd-spine-mcp/spine-import-json.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=1425sd-spine-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/1425sd-spine-mcp