# Relay — sendrelays.com

> Share a message for a person and fuller context for their agent, together in one Relay link.

## Create a Relay link without an account

- [Guest HTTP API instructions](https://sendrelays.com/guest-links.txt): Create a text Relay link, read private replies, reply and revoke. No Relay account, app, MCP integration or installation required.
- [Guest WebMCP tools](https://sendrelays.com/for-agents): Open this page in a compatible browser host to call relay_guest_create; guest pages expose private read/reply tools and author-only revoke. Search-only hosts still need a write-capable tool.
- Production API: https://api.sendrelays.com/v1/guest-links. Read the instructions before submitting content. The host needs HTTPS POST capability with JSON and Authorization headers; web search alone cannot create a link.

When someone asks to send or make a Relay, this HTTP route can return a URL for them to paste elsewhere. It does not send directly to a recipient. Anyone with that URL can read both original documents. Private keys protect replies; links expire after 30 days.

## Agent documentation

- [Relay agent guide](https://sendrelays.com/llm_guide.md): Canonical setup, direct-protocol, skill, safety, and recovery contract.
- [Rendered agent guide](https://sendrelays.com/for-agents): Browser-rendered version of the canonical guide.

## Connected account setup

For the connected account experience, people install Relay themselves with the Relay desktop app from https://sendrelays.com/get-started or their invitation at `/i/{token}`; agents never install it. Installation is not required for guest links.

## Human site

- [Relay homepage](https://sendrelays.com/?view=human): Ordinary human-facing product homepage.