8x8 Connect SMS API

Name: 8x8 Connect SMS API API
Brand: 8x8 Connect SMS API
Availability: InStock

★ Only Publicly Available SpecCommunicationsSms MessagingapiKey3 EndpointsREST

For Agents

Send single or bulk SMS messages worldwide and check delivery status using an API key. Supports GSM 7-bit and Unicode encoding plus delivery callbacks.

Quickstart

Get started with 8x8 Connect SMS API in minutes using your preferred integration method.

# Add to your MCP client config (Claude Desktop, Cursor, Windsurf)
{
  "jentic": {
    "url": "https://api.jentic.com/mcp",
    "auth": "oauth"
  }
}

# Then ask your agent:
"send an SMS message"

# → Jentic returns the GET /events tool with parameter schema, agent executes.

Capabilities

What an agent can do with 8x8 Connect SMS API API.

Send a single SMS to a destination MSISDN with a chosen sender ID

Send a bulk SMS batch to many recipients in one request

Look up the delivery status of a sent message by its UMID

Handle Unicode content (emoji, non-Latin scripts) via UCS-2 encoding

Receive delivery receipts via the configured callback URL

GET STARTED

Start building with 8x8 Connect SMS API API

Explore with Jentic

View OpenAPI Spec

Jentic publishes the only available OpenAPI specification for 8x8 Connect SMS API, keeping it validated and agent-ready.

Jentic publishes the only available OpenAPI specification for 8x8 Connect SMS API, keeping it validated and agent-ready. The 8x8 Connect SMS API is a CPaaS interface for sending one-off and bulk SMS worldwide and tracking delivery for each message. It supports GSM 7-bit and Unicode encodings, several sender ID types (alphanumeric, short code, long code), and delivery status callbacks. The surface is small (three endpoints) and focused: one for single sends, one for batch sends, and one for status lookup by message UMID.

Use Cases

Patterns agents use 8x8 Connect SMS API API for, with concrete tasks.

★ Transactional SMS Notifications

Operations teams use SMS to confirm orders, deliver one-time passcodes, and alert users about account events. The 8x8 Connect SMS API exposes POST /{subAccountId}/messages for single sends with a configurable sender ID and encoding, plus GET /{subAccountId}/messages/{umid} to check the result. Pair the two for a reliable send-and-confirm pattern that completes in under a second per message.

Send a single SMS to +447700900123 with body 'Your code is 482910' and then poll the status endpoint until it reports DELIVERED

Bulk Marketing or Alert Campaigns

Marketing and alerting workloads need to fan a message out to thousands of recipients with a single call. POST /{subAccountId}/batch accepts a list of destinations with the shared body, sender, and encoding, so the campaign runs as one job rather than thousands of point requests. Combine with delivery callbacks to reconcile per-recipient outcomes.

Send a batch SMS to 1,000 opted-in numbers with body 'Sale ends Friday — visit example.com' from sender ID SHOP

Delivery Reconciliation

Compliance and analytics workflows rely on accurate delivery state. GET /{subAccountId}/messages/{umid} returns the current status (delivered, failed, expired) along with the failure reason where applicable. Agents can use this to retry only on transient failures and surface permanent failures to the user.

Look up message UMID abc123 and return whether the SMS was delivered or the failure reason

Agent-Driven SMS Sending via Jentic

AI agents handle SMS as a tool call, not a custom integration. Through Jentic, an agent searches by intent, loads the schema for POST /{subAccountId}/messages, and executes the send with the API key held in the Jentic vault. The same flow covers batch sends and status checks, so an agent can run end-to-end SMS workflows without ever seeing the raw key.

Search Jentic for 'send an SMS', load the 8x8 schema, and execute the call with the customer's number and message body

Key Endpoints

3 endpoints — jentic publishes the only available openapi specification for 8x8 connect sms api, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

POST

/{subAccountId}/messages

Send a single SMS

POST

/{subAccountId}/batch

Send bulk SMS messages

GET

/{subAccountId}/messages/{umid}

Get SMS delivery status

POST

/{subAccountId}/messages

Send a single SMS

POST

/{subAccountId}/batch

Send bulk SMS messages

GET

/{subAccountId}/messages/{umid}

Get SMS delivery status

Why though Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

8x8 API keys are stored encrypted in the Jentic vault. Agents call operations by ID and Jentic injects the apiKey header at execution time, so the raw key never enters the agent's context.

Intent-based discovery

Agents search by intent (e.g., 'send an SMS') and Jentic returns POST /{subAccountId}/messages with its input schema, so the agent can call the right endpoint without browsing the 8x8 docs.

Time to first call

Direct integration: 0.5-1 day to wire up auth, build the request, and add delivery-status polling. Through Jentic: minutes — search, load schema, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Alternative

Twilio Messaging

Twilio's messaging service for SMS, MMS, and WhatsApp with country-aware routing.

Choose Twilio when the use case needs MMS, WhatsApp, or Twilio's deeper compliance tooling rather than 8x8's lean SMS-only surface.

Alternative

MessageBird SMS

MessageBird's SMS API with strong European coverage and a similar single/batch model.

Pick MessageBird if European deliverability is the primary concern or if you already use other Bird channels.

Alternative

Plivo

Plivo's CPaaS platform covering SMS, voice, and Zentrunk SIP.

Pick Plivo when SMS is paired with voice in the same workflow.

Complementary

Sinch

Sinch CPaaS APIs for SMS, voice, verification, and conversations.

Use Sinch as a fallback or A/B route alongside 8x8 for global redundancy.

FAQs

Specific to using 8x8 Connect SMS API API through Jentic.

Why is there no official OpenAPI spec for 8x8 Connect SMS API?

8x8 does not publish an OpenAPI specification for the Connect SMS endpoints. Jentic generates and maintains this spec so that AI agents and developers can call 8x8 Connect SMS API via structured tooling. It is validated against the live API and kept up to date. Get started at https://app.jentic.com/sign-up.

What authentication does the 8x8 Connect SMS API use?

The API uses an API key passed in the request headers (apiKey scheme). Through Jentic, the key is stored encrypted in the Jentic vault and added to the request at execution time, so the agent never sees the raw key in its context.

Can I send bulk SMS with the 8x8 Connect SMS API?

Yes. POST /{subAccountId}/batch accepts a list of destinations with a shared body, sender ID, and encoding, so a single request fans out to many recipients. Pair it with the delivery callback URL on your sub-account to reconcile per-recipient outcomes.

How do I check whether an SMS was delivered through Jentic?

Search Jentic for 'check SMS delivery status' to load GET /{subAccountId}/messages/{umid}, then execute the call with the UMID returned by your send. The response contains the current delivery state and any failure reason for retry logic.

What are the rate limits for the 8x8 Connect SMS API?

The OpenAPI spec does not document hard rate limits. 8x8's documented best practice is to respect per-route carrier throughput and use the batch endpoint for any send larger than a few hundred messages. Confirm sub-account limits in the 8x8 Connect portal before high-volume campaigns.

Does 8x8 Connect SMS support Unicode and emoji?

Yes. Set the encoding field on the message to UCS-2 (Unicode) when sending non-Latin scripts or emoji; use GSM7bit otherwise. The encoding choice affects per-segment character counts and pricing, which 8x8 calculates from the body.