Wavix MCP Server

A Model Context Protocol server that gives LLMs and AI agents direct access to the Wavix telecom platform — SMS/MMS, voice calls, 2FA, SIP trunking, phone-number management, 10DLC registration, call recordings, speech analytics, and billing.

Wavix is a global communications platform for sending SMS, placing voice calls, and running 2FA flows over a single API. A free trial is available; paid usage follows the Wavix pricing plan attached to your account.

The fastest way to use this MCP server is the hosted endpoint at https://mcp.wavix.com/mcp — point any MCP-compatible client at it and connect by signing in with your Wavix account or with a Wavix API key. If you need to self-host (custom Wavix deployment, behind a firewall, dedicated instance), see Run your own.

Table of contents

• Endpoint

• Install — sign in with an account, API key, one-click, Claude Code, Claude Desktop / Web, Cursor, VS Code, Codex CLI, Windsurf

• Run your own (self-host)

• Examples

• Tools → full catalogue in TOOLS.md

• Resources

• Authentication (best practices, if a token is compromised)

• Troubleshooting

• Compatibility & limits

• Support, Contributing, Security, License

Related MCP server: Sinch MCP Server

Endpoint

Get a Wavix API key from the Wavix Console → Administration → API keys → Create new.

Install

Two ways to connect — pick whichever your client supports; neither is required over the other.

Sign in with a Wavix account

If your MCP client supports OAuth (Claude Desktop / Web, and other OAuth-capable clients), connect without an API key: add the connector for https://mcp.wavix.com/mcp and, when the client prompts, sign in with your Wavix account and approve access. The client runs the OAuth 2.1 flow and stores the token itself — nothing to paste. The tools you get are scoped to what you approve and your account role permits (see Troubleshooting).

Connect with an API key

Before you start: grab your Wavix API key.

1. Sign in at https://wavix.com.

2. Open Administration → API keys.

3. Click Create new (or copy an existing key). Keep it handy — you'll paste it in place of YOUR_API_KEY below.

One-click install

⚠️ The buttons below seed your editor's MCP config with a placeholder token YOUR_API_KEY. After the editor finishes installing, open the generated config and replace the placeholder with your real API key before sending any request — otherwise every call will return 401 Unauthorized.

To remove later: open the same config file (~/.cursor/mcp.json, .vscode/mcp.json, or the equivalent for your editor) and delete the wavix entry, or remove the connector through your editor's MCP / Connectors UI.

Claude Code

claude mcp add --transport http wavix https://mcp.wavix.com/mcp \
  --header "Authorization: Bearer YOUR_API_KEY"

Use claude mcp list to verify and /mcp inside a session for status.

Claude Desktop / Claude Web

Settings → Connectors → Add custom connector:

• Name: Wavix

• URL: https://mcp.wavix.com/mcp

• Transport: Streamable HTTP

• Authentication header: Authorization: Bearer <api_key>

To connect by signing in instead, add the connector without an authentication header and sign in with your Wavix account when the client prompts.

Cursor (manual)

Add to ~/.cursor/mcp.json (or project-level .cursor/mcp.json):

{
  "mcpServers": {
    "wavix": {
      "url": "https://mcp.wavix.com/mcp",
      "headers": {
        "Authorization": "Bearer <api_key>"
      }
    }
  }
}

Cursor 2.4+ exposes the full catalogue; earlier versions cap at 40.

VS Code (manual, GitHub Copilot Chat)

Create .vscode/mcp.json in your workspace (or add the same servers object under the "mcp" key in user settings.json):

{
  "servers": {
    "wavix": {
      "type": "http",
      "url": "https://mcp.wavix.com/mcp",
      "headers": {
        "Authorization": "Bearer <api_key>"
      }
    }
  }
}

See the VS Code MCP servers guide for the up-to-date schema.

Codex CLI

Codex CLI supports MCP over stdio. Bridge to the hosted server via mcp-remote. Edit ~/.codex/config.toml:

[mcp_servers.wavix]
command = "npx"
args = [
  "-y",
  "mcp-remote",
  "https://mcp.wavix.com/mcp",
  "--header",
  "Authorization:Bearer ${WAVIX_API_KEY}"
]

[mcp_servers.wavix.env]
WAVIX_API_KEY = "YOUR_API_KEY"

Windsurf / other clients

Any MCP client that supports Streamable HTTP transport with custom headers will work. Use:

• URL: https://mcp.wavix.com/mcp

• Header: Authorization: Bearer <api_key>

Setting up via an AI agent? Point your agent at llms-install.md — it's a machine-readable install guide that gives the model the URL, header, and per-client configuration in a deterministic format so it doesn't improvise endpoint values.

Run your own

The hosted server works out of the box for most users. Self-host if you need to point at a non-public Wavix deployment, run behind a firewall, or operate inside your own infrastructure.

Docker

docker build -t wavix-mcp-server .
docker run --rm -p 8000:8000 wavix-mcp-server

The server listens on port 8000 and exposes the MCP endpoint at /mcp. Point your client at http://<host>:8000/mcp.

From source

git clone https://github.com/Wavix/wavix-mcp-server.git
cd wavix-mcp-server
pip install -e .
wavix-mcp

Requires Python 3.10+.

Configuration

No Wavix credentials are required to run the server — they are forwarded per-request from the MCP client's Authorization: Bearer <api_key> header. Self-hosters are responsible for terminating TLS in front of the server (nginx, Caddy, cloud load balancer) before exposing it publicly.

OAuth 2.1 (optional)

Set OAUTH_ISSUER and OAUTH_RESOURCE together to turn the server into an OAuth 2.1 protected resource. It then publishes RFC 9728 metadata at /.well-known/oauth-protected-resource<MCP_PATH>, validates incoming access tokens as JWTs against the issuer's JWKS, and answers unauthenticated requests with a WWW-Authenticate challenge pointing at that metadata. MCP clients that support OAuth use this to run the authorization flow themselves, so users no longer paste an API key into their client config.

The audience each token must carry is OAUTH_RESOURCE + MCP_PATH, which is also the resource value published in the metadata. Authorization servers implementing RFC 8707 compare the client's resource parameter against that string exactly, so the two must be configured to match — including the path.

Enabling OAuth does not cut off clients that authenticate with a Wavix API key. A bearer token that is not a valid OAuth JWT is forwarded upstream unverified, exactly as before, leaving the Wavix API the sole authority on it — so an existing deployment can turn OAuth on for new clients without breaking the ones already connected. A request carrying no token at all still gets the WWW-Authenticate challenge, which is what lets an OAuth-capable client discover the authorization server. Only OAuth-authenticated connections are scope-filtered; an API-key connection sees the full tool surface.

Set OAUTH_API_KEY_PASSTHROUGH=false to drop that fallback and require a valid JWT — the strict mode to switch to once API-key access is retired.

Leaving either of OAUTH_ISSUER / OAUTH_RESOURCE unset keeps the previous behaviour: no metadata is published and whatever bearer token the client sends is forwarded upstream unverified.

Examples

Concrete prompts you can drop into any connected client.

Phone numbers below (+1 310 555 0100, +44 7700 900123) are in reserved test ranges (NANP 555 and Ofcom 070 09xx) — safe to copy verbatim, no real subscribers are reachable through them.

Send a transactional SMS

Prompt: "Send an SMS from +13105550100 to +447700900123 saying 'Your verification code is 4821'."

The agent calls sms_and_mms_messages_send with from, to, and text. Returns the message ID and delivery status.

Run a 2FA verification

Prompt: "Send a 2FA verification code to +13105550100 via SMS. When I give you the code I receive, check whether it's correct."

The agent calls two_fa_verification_create, waits for you to share the code that arrives via SMS, then calls two_fa_verification_check. Useful for prototyping passwordless flows without writing integration code.

Find and buy a phone number

Prompt: "Find an available US toll-free number with SMS capability, add it to my cart, and check out."

The agent chains buy_numbers_list (filtering by country and feature), cart_add, and cart_checkout. Confirm with the user before checkout — it charges the account.

Search call transcripts

Prompt: "Show me all inbound calls from yesterday longer than two minutes where the caller mentioned 'refund'."

The agent uses cdrs_search against transcriptions, then enriches each result via cdrs_get for full call metadata.

Pull a recording and transcribe it

Prompt: "Get the recording for call abc-123, ask Wavix to transcribe it, and return the transcription."

The agent calls call_recording_get_by_call (returns a pre-signed download URL), cdrs_retranscribe, then polls cdrs_transcription_get.

Audit billing

Prompt: "How much did we spend on SMS last month, and what invoices were issued?"

The agent calls billing_transactions_list filtered by type and date, then billing_invoices_list. Downloading the invoice PDF itself is not exposed over MCP — fetch it from the Wavix API or dashboard.

Tools

116 tools, generated from the Wavix OpenAPI spec. Arguments mirror request parameters and body fields.

See TOOLS.md for the complete tool list with one-line descriptions. The authoritative source is the Wavix OpenAPI spec — your client always sees the current live catalogue.

Resources

In addition to tools, the server exposes Wavix documentation as MCP Resources, so the model can pull authoritative context on demand instead of guessing from prior knowledge.

Both sources — docs.wavix.com and the Wavix OpenAPI spec — are publicly available and can be browsed directly without authentication.

Resources are fetched lazily on resources/read and cached server-side with a 1-hour TTL. The upstream Bearer token is never forwarded to documentation hosts — only to api.wavix.com.

Authentication

The hosted server accepts two connection methods — neither is preferred:

• Sign in with a Wavix account (OAuth 2.1). For OAuth-capable clients. The client runs the authorization flow and the user signs in; no API key is stored. Access is scope-limited to what the user approves and their account role permits. See Sign in with a Wavix account.

• Wavix API key (Bearer). For any Streamable-HTTP client. Every request must include:

Authorization: Bearer <api_key>

The server forwards this header to api.wavix.com per-request. The token:

• is never logged,

• is never forwarded on cross-host redirects (e.g. pre-signed S3 download URLs),

• is never sent to documentation hosts.

If your client follows a pre-signed download URL returned by call_recording_get_by_call, speech_analytics_file_get, or ten_dlc_brand_evidence_get, fetch it directly without the Authorization header.

Best practices

• Use a dedicated API key for MCP. Create a separate API key at https://wavix.com → Administration → API keys (or via the api_keys_create tool itself, from another session). This lets you revoke MCP access without disrupting other integrations.

• Rotate periodically. Treat the API key like any production secret: rotate on schedule and on any suspicion of leakage.

• Keep API keys out of git. MCP client configs are easy to commit by accident, taking the token with them into history and CI logs. Most clients support ${env:VAR} substitution in the header value — store the API key in an env var or your OS keychain and reference it from the config. As a safety net, add the common client-config paths to your project's .gitignore:

  .cursor/mcp.json
  .vscode/mcp.json
  claude_desktop_config.json
  .claude/mcp.json
  .codex/config.toml

If a credential is compromised

If you connected with an API key:

1. In the Wavix Console, deactivate or delete that key immediately (or call api_keys_delete).

2. Create a replacement via api_keys_create or the Console.

3. Update the client's config and reconnect.

If you connected by signing in with your Wavix account:

1. Revoke the connection from the Wavix portal's grant-management page, which lists the connections you authorized and revokes the one you choose — this invalidates that connection's tokens. No API key is involved.

2. Reconnect and sign in again.

In either case, review billing_transactions_list and cdrs_list for unexpected activity.

Troubleshooting

Compatibility & limits

• Compatible with any MCP client supporting Streamable HTTP transport (Claude Desktop / Web / Code, Cursor 2.4+, VS Code, Windsurf, custom MCP SDKs) and any agent framework with an MCP client adapter.

• Older clients may enforce a per-server tool cap; upgrade to a recent version to access the full catalogue.

• Rate limits and usage charges follow your Wavix account plan. See Wavix pricing.

Changelog

The hosted server is updated continuously as the Wavix OpenAPI spec evolves; new tools appear automatically and existing tool arguments may gain optional fields. Documentation changes for this repository are tracked under Releases. For substantial behavior changes affecting tool inputs or auth, we will publish a notice both there and in the Wavix release notes.

Support

• Product docs: https://docs.wavix.com

• API reference: https://docs.wavix.com/api-reference

• Questions / feedback: support@wavix.com

Contributing

This repository is source-available but not open to external contributions. Pull requests are auto-closed, and Issues / Discussions are disabled. Send bug reports, feature requests, and feedback to support@wavix.com. See CONTRIBUTING.md for details.

If you find a bug in the underlying FastMCP framework, please report it upstream there.

Security

To report a security vulnerability, please email support@wavix.com with the subject Security: <short summary> rather than opening a public issue. See SECURITY.md for details.

License

MIT © Wavix