Relay

Name: Relay
Author: yesrelay

by yesrelayversion 1.0.0i★ –iRuns in the cloud

Registry nameio.github.yesrelay/relay

Install

Overview

Description from the maker (original English)

Business phone and SMS for teams: calls, texts, transcripts, contacts and call flows.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Chat & email
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http relay https://api.yesrelay.com/api/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "relay": {
      "url": "https://api.yesrelay.com/api/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "relay": {
      "type": "http",
      "url": "https://api.yesrelay.com/api/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret required HTTP header
Relay API key as a Bearer token (Bearer rk_live_...). Create it in the app under Administration, Integrations & API.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account yesrelay, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Chat & emaili

More stars than 0% of the other 1772 servers in this category
Published to the registry more recently than 38% of the other 1772 servers in this category
Basic checks equal to or better than 100% of the other 1772 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Relay safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 43 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Vexa

by Vexa-ai

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago

Install

emailmd

by anypost

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

Computer or cloud★ 1,385MITUpdated 31 days ago

Install

MCP WhatsApp Cloud

by codespar

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Relay MCP server

Remote Model Context Protocol server for Relay, a business phone and SMS app for teams, built in Montreal.

It lets Claude, or any MCP client, work with your team's phone: list calls and texts, read call transcripts, search and update contacts, send an SMS from the team number, and draft call-routing flows.


Endpoint	`https://api.yesrelay.com/api/mcp`
Transport	Streamable HTTP (spec 2025-06-18), stateless
Authentication	`Authorization: Bearer`
Tools	16
Plans	Every plan, free included
Documentation	https://yesrelay.com/en/api-docs

This repository holds no server code: the server is hosted by Relay. Nothing to install on the server side.

Get an API key

Create a free account at https://app.yesrelay.com.
In the app, open Administration, then Integrations & API, and create a key.
The key starts with rk_live_ and is shown once. Keep it in a secrets manager.

Revoking the key in the app cuts MCP and REST access at the same instant.

Connect a client

Claude Code

claude mcp add --transport http relay https://api.yesrelay.com/api/mcp \

--header "Authorization: Bearer rk_live_..."

Claude Desktop

claude_desktop_config.json, through mcp-remote:

"mcpServers": { "relay": { "command": "npx", "args": ["mcp-remote", "https://api.yesrelay.com/api/mcp", "--header", "Authorization:${AUTH}"], "env": { "AUTH": "Bearer rk_live_..." } } } }

Any other client

Point it at https://api.yesrelay.com/api/mcp with the Authorization header above.

Tools

Calls and messages

Tool	What it does
`relay_list_numbers`	Lists the organization's teams and their phone numbers
`relay_list_calls`	Recent calls of a team, newest first
`relay_get_transcript`	Transcript of a call, with the AI summary and action items
`relay_list_messages`	Recent texts of a team, newest first, filterable by contact
`relay_send_sms`	Sends a text from the team number. Real, billed and irreversible

Contacts and team

Tool	What it does
`relay_search_contacts`	Searches a team's address book by first name, last name or company
`relay_create_contact`	Adds a contact to the team's address book
`relay_update_contact`	Replaces the fields of an existing contact
`relay_list_members`	People in the organization and their identifiers

Flow (call routing, Business and Scale plans)

Tool	What it does
`relay_list_flows`	Lists the organization's call flows
`relay_get_flow`	Reads the live graph and the draft of a flow
`relay_flow_schema`	Block types, expected fields and routing-engine rules
`relay_create_flow`	Creates a number's flow from a template
`relay_save_flow_draft`	Replaces the draft. Changes nothing callers hear
`relay_check_flow`	Tests a graph without writing anything
`relay_discard_flow_draft`	Throws away the draft and returns to what is live

No tool publishes a flow. An agent can draft and check a call path; a person puts it live from the app.

Safeguards

A text sent through MCP goes through the same checks as a text sent from the app:

Refusal code	When
`recipient_opted_out`	The recipient replied STOP (or ARRET, UNSUBSCRIBE) to this team
`daily_limit_reached`	The team's daily cap is reached (the customer's own limit, or the automatic one)
`workspace_budget_reached`	The team's spending cap is reached
`sending_suspended`	Outbound sending is paused by the circuit breaker; receiving continues

What you can do also follows your plan: sending texts needs a paid plan, and the Flow tools need Business or Scale.

Limits

Plan	Requests per minute per key	Keys
Free	30	2
Paid	120	5

Each message in a JSON-RPC batch counts as one request.

Troubleshooting

The client shows a read error, or curl fails with error 56 ("chunk hex-length"). Some antivirus software that inspects HTTPS traffic corrupts MCP responses; we have seen it with Avast. The server answered correctly. Exclude api.yesrelay.com from your antivirus HTTPS scanning, then try again.

401 Invalid API key. The key is missing, revoked or expired. Create a new one in the app.

Also available

REST API: https://api.yesrelay.com/api/v1, reference at https://api.yesrelay.com/docs
Signed webhooks (HMAC SHA-256) for call and SMS events

Support

hello@yesrelay.com

Relay

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Chat & emaili

Common questions

Alternatives

Vexa

emailmd

MCP WhatsApp Cloud

README from the maker

Relay MCP server

Get an API key

Connect a client

Claude Code

Claude Desktop

Any other client

Tools

Calls and messages

Contacts and team

Flow (call routing, Business and Scale plans)

Safeguards

Limits

Troubleshooting

Also available

Support