# fetch_datasources

A read tool on the Storyblok MCP Server MCP server.

Agent View of the PolicyLayer registry record for `fetch_datasources`. HTML page: https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-datasources

## Facts

- Tool: `fetch_datasources`
- Server: Storyblok MCP Server (`arjuncodess/storyblok-mcp`) — https://policylayer.com/tools/arjuncodess-storyblok-mcp.md
- Homepage: https://github.com/ArjunCodess/storyblok-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": "fetch_datasources",
    "arguments": {}
  }
}
```

## Why fetch_datasources is rated Low

The 'fetch' prefix strongly suggests a read-only operation that retrieves datasource configuration or metadata from Storyblok without modifying it. No language in the server description or tool name indicates content creation, deletion, or execution of external operations. The low severity reflects that unauthorized datasource reads would have minimal blast radius in a typical CMS context.

From the tool's own definition: "Tool name 'fetch_datasources' uses 'fetch' verb which indicates data retrieval with no side effects. The tool is part of a CMS content management server where datasources are typically reference data structures (e.g., dropdown options, content sets) that are…"

## Use case

AI agents call fetch_datasources to retrieve information from Storyblok MCP Server 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 Storyblok MCP Server:

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

## Other tools on Storyblok MCP Server (114)

- `delete_access_token` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-access-token.md
- `delete_asset` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-asset.md
- `delete_asset_folder` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-asset-folder.md
- `delete_branch` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-branch.md
- `delete_component` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-component.md
- `delete_component_folder` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-component-folder.md
- `delete_datasource` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-datasource.md
- `delete_datasource_entry` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-datasource-entry.md
- `delete_preset` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-preset.md
- `delete_release` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-release.md
- `delete_space` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-space.md
- `delete_space_role` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-space-role.md
- `delete_story` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-story.md
- `delete_story_scheduling` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-story-scheduling.md
- `delete_tag` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-tag.md
- `delete_webhook` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-webhook.md
- `delete_workflow` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-workflow.md
- `delete_workflow_stage` — Destructive — https://policylayer.com/tools/arjuncodess-storyblok-mcp/delete-workflow-stage.md
- `create_branch_deployment` — Execute — https://policylayer.com/tools/arjuncodess-storyblok-mcp/create-branch-deployment.md
- `deploy_branch` — Execute — https://policylayer.com/tools/arjuncodess-storyblok-mcp/deploy-branch.md
- `backup_space` — Other — https://policylayer.com/tools/arjuncodess-storyblok-mcp/backup-space.md
- `ping` — Other — https://policylayer.com/tools/arjuncodess-storyblok-mcp/ping.md
- `compare_branches` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/compare-branches.md
- `fetch_access_tokens` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-access-tokens.md
- `fetch_asset_folders` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-asset-folders.md
- `fetch_assets` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-assets.md
- `fetch_branch_deployments` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-branch-deployments.md
- `fetch_branches` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-branches.md
- `fetch_component_folders` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-component-folders.md
- `fetch_components` — Read — https://policylayer.com/tools/arjuncodess-storyblok-mcp/fetch-components.md
- …and 84 more: https://policylayer.com/tools/arjuncodess-storyblok-mcp.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=arjuncodess-storyblok-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/arjuncodess-storyblok-mcp