# update_access_token

A write tool on the Storyblok MCP Server MCP server.

Agent View of the PolicyLayer registry record for `update_access_token`. HTML page: https://policylayer.com/tools/arjuncodess-storyblok-mcp/update-access-token

## Facts

- Tool: `update_access_token`
- Server: Storyblok MCP Server (`arjuncodess/storyblok-mcp`) — https://policylayer.com/tools/arjuncodess-storyblok-mcp.md
- Homepage: https://github.com/ArjunCodess/storyblok-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why update_access_token is rated Medium

Updating access tokens modifies authentication credentials reversibly but with high blast radius. This is a Write operation (modification) rather than Read (it actively changes tokens, not just retrieves them), not Execute (doesn't run arbitrary code), and not Destructive (tokens can be regenerated). However, compromised token management could grant unauthorized access to the entire CMS, making this high severity.

From the tool's own definition: "Tool name 'update_access_token' indicates modification of authentication credentials. Storyblok context shows this is a CMS access control mechanism."

## Use case

AI agents use update_access_token to create or update resources in Storyblok MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Storyblok MCP Server environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Storyblok MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_access_token": {
      "limits": [
        {
          "counter": "update_access_token_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## 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