# postmark_list_bounces A read tool on the Integrations MCP MCP server. Agent View of the PolicyLayer registry record for `postmark_list_bounces`. HTML page: https://policylayer.com/tools/shriram-vasudevan-integrations-mcp/postmark-list-bounces ## Facts - Tool: `postmark_list_bounces` - 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_list_bounces", "arguments": {} } } ``` ## Why postmark_list_bounces is rated Low This tool retrieves or queries bounce data from an email service with no modification capability or side effects. It falls squarely into the Read category. The blast radius is minimal since listing bounces cannot cause damage—it merely exposes bounce event information. Severity is low. From the tool's own definition: "Tool name 'postmark_list_bounces' indicates a list operation that retrieves bounce records from Postmark email service. The 'list' prefix and 'bounces' noun identify this as a query/retrieval function. No description provided, but naming convention is clear." ## Use case AI agents call postmark_list_bounces 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_list_bounces": {} } } ``` ## 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