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Relin
io.github.earonesty/relin in the official MCP registry.
Endpoint https://relin.app/mcp. Source: github.com/earonesty/relin.
The registry describes it as: Send and receive webhooks, manage customer endpoints, and inspect and retry deliveries.
We read its 53 tools on 2026-10-26. Nothing in them matched our tool-poisoning rules.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
describe_relin list_supported_webhook_shapes get_setup_guide list_api_keys create_api_key revoke_api_key list_sources create_source rotate_source_token archive_source list_destinations create_destination list_apps create_app get_app list_recipients upsert_recipient list_endpoints create_endpoint get_endpoint update_endpoint delete_endpoint rotate_endpoint_secret list_messages send_message get_message list_message_attempts replay_message list_event_types upsert_event_type delete_event_type create_portal_session get_portal_settings save_portal_settings list_portal_hosts create_portal_host check_portal_host get_webhook_setup_status ensure_webhook_setup list_recent_events get_event_detail list_open_issues list_delivery_attempts list_retry_jobs get_metrics_summary list_alert_channels create_alert_channel get_slack_connect_url replay_event replay_events retry_failed_deliveries cancel_queued_retries resolve_anomalies
Run this server? Show the check in your README
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[](https://lazaretto.dev/mcp-registry/io-github-earonesty-relin)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.