# update_collection

Update an existing collection. Full collection replacement with maximum size of 20 MB.

Agent View of the PolicyLayer registry record for `update_collection`. HTML page: https://policylayer.com/tools/delano-postman-mcp-server/update-collection

## Facts

- Tool: `update_collection`
- Server: Postman (`delano/postman-mcp-server`) — https://policylayer.com/tools/delano-postman-mcp-server.md
- Homepage: https://github.com/delano/postman-mcp-server
- 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_collection",
    "arguments": {}
  }
}
```

## Why update_collection is rated Medium

This tool modifies data reversibly by updating an existing collection. While it involves full replacement, the operation is not irreversible—the previous collection state can theoretically be restored via version control or backups. This qualifies as Write rather than Destructive.

From the tool's own definition: "Tool description explicitly states 'Update an existing collection' and 'Full collection replacement', indicating modification of existing data structures."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Postman (97)

- `delete_api` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-api.md
- `delete_api_comment` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-api-comment.md
- `delete_api_version` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-api-version.md
- `delete_collection` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-collection.md
- `delete_collection_access_key` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-collection-access-key.md
- `delete_collection_folder` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-collection-folder.md
- `delete_collection_request` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-collection-request.md
- `delete_collection_response` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-collection-response.md
- `delete_environment` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-environment.md
- `delete_mock` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-mock.md
- `delete_monitor` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-monitor.md
- `delete_schema_file` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-schema-file.md
- `delete_server_response` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/delete-server-response.md
- `remove_pan_element` — Destructive — https://policylayer.com/tools/delano-postman-mcp-server/remove-pan-element.md
- `create_webhook` — Execute — https://policylayer.com/tools/delano-postman-mcp-server/create-webhook.md
- `get_accounts` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-accounts.md
- `get_api` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api.md
- `get_api_collection` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api-collection.md
- `get_api_comments` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api-comments.md
- `get_api_schema` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api-schema.md
- `get_api_schema_files` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api-schema-files.md
- `get_api_tags` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api-tags.md
- `get_api_version` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api-version.md
- `get_api_versions` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-api-versions.md
- `get_authenticated_user` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-authenticated-user.md
- `get_collection` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-collection.md
- `get_collection_folder` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-collection-folder.md
- `get_collection_forks` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-collection-forks.md
- `get_collection_request` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-collection-request.md
- `get_collection_response` — Read — https://policylayer.com/tools/delano-postman-mcp-server/get-collection-response.md
- …and 67 more: https://policylayer.com/tools/delano-postman-mcp-server.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`

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