# create_api_schema

Create a schema for an API

Agent View of the PolicyLayer registry record for `create_api_schema`. HTML page: https://policylayer.com/tools/delano-postman-mcp-server/create-api-schema

## Facts

- Tool: `create_api_schema`
- 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": "create_api_schema",
    "arguments": {}
  }
}
```

## Why create_api_schema is rated Medium

This tool creates (writes) a new API schema in Postman, which is a reversible operation. It does not execute external code, delete data, or transfer funds. While schema creation could influence API testing workflows, the immediate action is data creation without side effects beyond the schema resource itself.

From the tool's own definition: "Tool name 'create_api_schema' and description 'Create a schema for an API' indicate data creation. The verb 'create' modifies Postman's data model by adding a new schema resource."

## Use case

AI agents use create_api_schema 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": {
    "create_api_schema": {
      "limits": [
        {
          "counter": "create_api_schema_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