# postmark_get_message_stream

A read tool on the Integrations MCP MCP server.

Agent View of the PolicyLayer registry record for `postmark_get_message_stream`. HTML page: https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/postmark-get-message-stream

## Facts

- Tool: `postmark_get_message_stream`
- Server: Integrations MCP (`shriram-vasudevan/integrations-mcp`) — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp.md
- Homepage: https://github.com/Shriram-Vasudevan/integrations-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": "postmark_get_message_stream",
    "arguments": {}
  }
}
```

## Why postmark_get_message_stream is rated Low

The 'get' prefix strongly indicates a read-only data retrieval operation. Even with an empty description, the naming convention and context of Postmark (transactional email service) suggest this fetches message stream metadata or logs. This poses minimal risk as it only accesses existing data without side effects. Confidence is moderate due to the empty description, but the verb semantics are clear.

From the tool's own definition: "Tool name 'postmark_get_message_stream' uses 'get' verb, indicating a retrieval operation. Postmark is an email delivery service; 'get_message_stream' retrieves message stream data without modifying it."

## Use case

AI agents call postmark_get_message_stream to retrieve information from Integrations MCP 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 Integrations MCP:

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

## Other tools on Integrations MCP (419)

- `airtable_delete_record` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/airtable-delete-record.md
- `calendly_cancel_event` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/calendly-cancel-event.md
- `calendly_remove_invitee` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/calendly-remove-invitee.md
- `cloudflare_delete_dns_record` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/cloudflare-delete-dns-record.md
- `cloudflare_purge_cache` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/cloudflare-purge-cache.md
- `gcal_delete_event` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/gcal-delete-event.md
- `okta_deactivate_user` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/okta-deactivate-user.md
- `s3_delete_object` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/s3-delete-object.md
- `salesforce_delete_record` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/salesforce-delete-record.md
- `supabase_delete_user` — Destructive — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/supabase-delete-user.md
- `amplitude_run_segmentation` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/amplitude-run-segmentation.md
- `parse_natural_timezone` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/parse-natural-timezone.md
- `postmark_send_batch` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/postmark-send-batch.md
- `query_database` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/query-database.md
- `resend_verify_domain` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/resend-verify-domain.md
- `salesforce_query` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/salesforce-query.md
- `sendgrid_send_email` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/sendgrid-send-email.md
- `snowflake_execute_query` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/snowflake-execute-query.md
- `supabase_execute_sql` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/supabase-execute-sql.md
- `twilio_make_call` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/twilio-make-call.md
- `twilio_send_sms` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/twilio-send-sms.md
- `vercel_create_deployment` — Execute — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/vercel-create-deployment.md
- `stripe_create_payment_intent` — Financial — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/stripe-create-payment-intent.md
- `author` — Other — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/author.md
- `generate_password` — Other — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/generate-password.md
- `generate_users` — Other — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/generate-users.md
- `airtable_get_record` — Read — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/airtable-get-record.md
- `airtable_list_bases` — Read — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/airtable-list-bases.md
- `airtable_list_records` — Read — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/airtable-list-records.md
- `airtable_list_tables` — Read — https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/airtable-list-tables.md
- …and 389 more: https://policylayer.com/tools/shriram-vasudevan-integrations-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=shriram-vasudevan-integrations-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/shriram-vasudevan-integrations-mcp