# Let's Do This

> Let's Do This is an endurance-events marketplace where participants discover and
> register for mass-participation sport — marathons, road races, trail runs,
> triathlons, obstacle races and cycling events — across the United Kingdom and the
> United States. The platform handles event discovery, entry purchase and entry
> management, teams, memberships, referral credits and discount codes, and works with
> event organisers and charity partners who list and sell places through it. The
> company is backed by EQT Ventures.

## Status

Let's Do This does **not** publish a public API program. As of 2026-07-19 there is no
developer portal, no API documentation, no API reference, no OpenAPI or GraphQL schema,
no SDKs, no CLI, no webhook catalogue, no status page and no /.well-known/ discovery
documents. Organiser and charity-partner integrations are handled through private
commercial relationships, not a self-serve developer surface.

A live GraphQL endpoint (https://graphql.letsdothis.com/graphql) backs the consumer
marketplace, but it is undocumented, has introspection disabled, and is not offered as
a third-party API.

## Site

- [Let's Do This](https://www.letsdothis.com/): Event discovery and registration marketplace.
- [Help Center](https://help.letsdothis.com/): Participant support — accounts, entries, teams, memberships, purchases, discounts and event/charity partner topics.

## Artifacts in this profile

- [Domain security](security/lets-do-this-domain-security.yml): Probed TLS, DNSSEC, CAA, SPF and DMARC posture.
- [Well-known probe](well-known/lets-do-this-well-known.yml): Recorded /.well-known/ discovery results (none published).
- [GraphQL endpoint probe](graphql/lets-do-this-graphql-endpoint.yml): Evidence for the undocumented GraphQL endpoint.