# relin.app — IT services and cybersecurity — 2 of 5

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> Probe-verified (tier 2 of 3). Last checked 2026-09-26. 2 of 5 capability checks passed. 2 unknown.

- host: relin.app
- url: https://relin.app/
- category: IT services and cybersecurity
- type: business
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-09-26 against rubric v1.2. 2 of 5 checks passed. 2 unknown.

- UNKNOWN — Markdown negotiation (`Accept: text/markdown`)
- UNKNOWN — Markdown twin at a predictable URL (`/page.md`)
- FAIL — llms.txt (`/llms.txt`)
- PASS — API catalog (`RFC 9727`)
- PASS — MCP server card answers (`/.well-known/mcp/server-card.json → tools/list`)

MCP tools (from tools/list on 2026-09-26): 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, 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

## Summary

Relin provides webhook reliability infrastructure, receiving, delivering, and monitoring webhooks from Stripe, Shopify, and GitHub, with alerting for missing events.

## Context

238 sites in this index share the category "IT services and cybersecurity"; 44 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark

How we found this site: probe discovery. This site didn't declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. [How we choose what to check, and how to opt out](https://knowngood.sh/bot)

## Where this sits

- business: https://knowngood.sh/type/business
- IT services and cybersecurity: https://knowngood.sh/category/it-services-cybersecurity
- Browse: https://knowngood.sh/browse
- Rubric: https://knowngood.sh/benchmark