Send SMS/MMS, place and manage voice calls, search and manage phone numbers, and read account details via Plivo.
Plivo ships in the w6w first-party pack. It declares 21 actions, 2 health checks, and the host runs its code in a sandbox that never sees the credential.
io.w6w.plivoPlivo is a CPaaS (communications platform as a service) for SMS, MMS and voice. This app lets a workflow send text and picture messages, look up what happened to them afterwards, place outbound phone calls and hang them up, and manage the phone numbers and applications on a Plivo account.
Messaging covers sending (SMS or MMS, from a number you own or a Powerpack), fetching one message record, listing message records with filters, and listing the media attached to an MMS. Voice covers placing a call, fetching and listing call detail records, listing live calls, hanging up one call, cancelling a queued call request, and reading recording metadata. Numbers covers searching Plivo’s inventory, renting a number, and listing, reading and updating the numbers already on the account. Applications (the Answer/Hangup/Message URL bundles that a number is pointed at) can be listed, read and created, and the account’s own details and credit balance can be read.
A fit for appointment reminders, one-time codes, alerting by text or call, delivery-status reconciliation, and provisioning a number for a new customer as part of an onboarding workflow.
Three routes to the same 21 actions. The Workflow tab is generated from Plivo's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.
cancel-call-request Cancel a pending outbound call using the request UUID that Make Call returned.
get-message Retrieve the detail record (state, error code, units, charges) of one message.
list-applications List the applications (Answer/Hangup/Message URL bundles) on the account.
list-recordings List call recording metadata (id, duration, format, URL) with optional filters.
search-phone-numbers Search Plivo's inventory for numbers that can be rented.
update-number Point a number at an application, or change its alias, subaccount or CNAM.
A workflow step names the app and the action, and the editor fills in the
connection when you pick one. This is the Step shape from the
workflow spec, carrying Plivo's real ids.
{
"manifestVersion": "2",
"name": "plivo-example",
"steps": [
{
"id": "buy-phone-number",
"uses": {
"app": "io.w6w.plivo",
"action": "buy-phone-number",
"connection": "conn_YOUR_CONNECTION_ID"
},
"with": {
"number": "<number>"
}
}
]
}buy-phone-number create-application get-account get-application get-call +16 more actions available
Every app-specific value here is a blank you have to fill in. An
app action is reached through the connection that authenticates it, so the
address is a connection id, not the app id — and connections belong to your account,
so a public page cannot know yours. Create one for Plivo, then fill in
the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the
parameters that action declares. The call itself is real — the shape is transcribed
from the studio's own snippet builder, which prints the same kind of blanks — but
nothing in it is specific to Plivo. The Workflow tab is where this app's
real ids are.
npm install @w6w/sdkyarn add @w6w/sdkpnpm add @w6w/sdkdeno add npm:@w6w/sdkimport { W6wClient, isActionRun } from "@w6w/sdk";
// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();
const envelope = await client.run({
urn: "conn_YOUR_CONNECTION_ID",
action: "buy-phone-number",
payload: {
number: "<value>",
// appId: "<value>",
// cnamLookup: "<value>",
// complianceApplicationId: "<value>",
// subaccount: "<value>",
},
});
if (isActionRun(envelope)) console.log(envelope.value); npm install -g @w6w/cli w6w run conn_YOUR_CONNECTION_ID --action buy-phone-number --payload '{"number":"<value>"}' Give an AI agent Plivo — without giving it Plivo's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.
One tool call{
"name": "w6w_invoke",
"arguments": {
"ref": "app:io.w6w.plivo#buy-phone-number",
"input": {
"number": "<number>"
}
}
}
Every tool names its target with a single ref. The
app: form above doesn't name a connection at all — the
host resolves which of the caller's Plivo connections to sign
with, and refuses rather than guesses when the answer is ambiguous.
The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.
Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.
Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.
Plivo's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.
The MCP surface is part of the hosted platform. Plivo itself is MIT, and the runtime that executes it is source-available (FSL).
Plivo declares its own checks, so its health is a property of the app rather than something the host guesses at.
Atlassian Statuspage rollup for status.plivo.com, with per-component detail. Unauthenticated and unsigned.