Your number, your relationships
Texts go out from the number your clients already saved — not an unknown short code. Every message lands in your phone's thread, so you can jump in any time.
AI agents, meet SMS
Your agents.
Your number.
Every text handled.
AgenText links your Android phone to your AI agents, so they can send, answer, and follow up on text messages from the number your customers already know — while you stay in control.
- No new number
- Linked in minutes by QR
- MCP, REST & webhooks
Your agent
tool · send_sms
to: "+1 (415) 555-0142" body: "Hi Sarah — yes, 412 Maple…"
S
Sarah Chen
Lead · Zillow inquiry
Text message
API Bridge · Connected
Why AgenText
Texting is where business happens.
It's also where it piles up.
Leads text at 10pm. Clients want confirmations, reminders, and quick answers. AgenText lets your AI agents carry that load — through the phone and number you already use.
Automate the busywork
Instant lead replies, appointment reminders, confirmations, follow-ups, and review requests — handled around the clock, in seconds, without you touching your phone.
Built for agents
Plug in with a single MCP config block, or use the REST API and signed webhooks. If your agent can call a tool or make an HTTP request, it can text.
You hold the switch
The bridge is off until you turn it on. One toggle pauses everything; unlink the phone or revoke an agent's key whenever you want.
How it works
From phone to agent-powered
in three steps.
-
01
Install AgenText Messenger
A full-featured SMS app for Android. Set it as your default messaging app — it works just like the one you have today.
-
02
Scan to link
Sign in at app.agentext.app, click Link a phone, and scan the QR code. Your phone shows Connected in seconds.
-
03
Hand your agent a key
Create an API key and paste the ready-made MCP config into your agent. It can now send, read, and reply to texts.
Use cases
Made for people who live in their texts.
If your business runs on quick replies and follow-ups, an agent with your number is the teammate you've been missing.
Answer every lead while it's hot.
Buyers text the agent who replies first. Yours replies in seconds — at dinner, at a showing, or at 2am.
SSarah Chen
For developers & agent builders
One config block.
Your agent can text.
AgenText speaks the protocols agents already use. Connect over MCP for zero-code tool access, or build on the REST API and signed webhooks.
send_smsSend a text from your linked phonelist_conversationsSee who's been texting, most recent firstlist_messagesRead a thread, filter by number or directionget_messageTrack status: queued → sent → deliveredlist_devicesCheck which phones are online
// Add to any MCP client that supports Streamable HTTP
{
"mcpServers": {
"agentext": {
"type": "http",
"url": "https://api.agentext.app/mcp",
"headers": {
"Authorization": "Bearer mbk_your_key"
}
}
}
}# Send a text through your linked phone
curl -X POST https://api.agentext.app/v1/messages \
-H "Authorization: Bearer $AGENTEXT_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: lead-8812-reply" \
-d '{"to":"+14155550142","body":"Hi Sarah — yes, it is still available!"}'
# → 202 Accepted
{ "id": "msg_…", "status": "queued" }# POST to your endpoint when someone texts you
MB-Event-Type: message.received
MB-Signature: t=1760342400,v1=5f2c… # HMAC-SHA256
{
"id": "evt_…",
"type": "message.received",
"data": {
"message": {
"direction": "inbound",
"phone_number": "+14155550142",
"body": "Thu 5:30 works!"
}
}
}Offline queueing
Phone out of signal? Messages wait and send the moment it reconnects.
Delivery receipts
Follow every text from queued to sent to delivered — or a clear failure reason.
No double-sends
Idempotency keys mean a retrying agent never texts a client twice.
Signed webhooks
HMAC-signed events, retried with backoff for a full day if your endpoint is down.
Multiple phones
Link several devices and SIMs to one workspace and route each message.
Always reconnecting
Survives reboots, network switches, and a screen that's been off for hours.
Security & control
Your phone. Your rules.
Giving an agent your number is a big deal. AgenText is designed so you never lose sight — or control — of what it's doing.
Off by default
Until you flip the API Bridge switch, AgenText Messenger is just a messaging app and never contacts the cloud.
No open ports
Your phone opens an encrypted connection outward. Nothing on the internet can reach into your device.
Every text in plain sight
Agent-sent messages appear in your normal threads. Read along, or take over the conversation yourself.
Blocked stays blocked
Numbers and messages your block rules filter out are never forwarded to your agents.
Revoke anything, instantly
Pause the bridge, unlink the phone, or revoke a single agent's key — effective immediately.
Open-source foundation
The Android app is built on the open-source Fossify Messages project, so its code is open to inspection.
The difference
Not another SMS API.
Traditional SMS platforms are great for high-volume broadcasts. AgenText is built for something more personal: conversations from a number people trust.
| AgenText | Traditional SMS API | |
|---|---|---|
| Sending number | The number you already have | A new number you rent |
| What recipients see | You — a saved contact | An unfamiliar number |
| Setup | Install the app, scan a QR code | Buy a number; often register it with carriers |
| When a human steps in | Reply from your phone, same thread | Separate dashboard or inbox |
| Agent integration | MCP tools built in | Usually build your own wrapper |
| Best for | Conversations and follow-ups | High-volume broadcasts |
FAQ
Questions, answered.
Do I need a new phone number?
No. That's the point. Your agents text from the number already in your phone, so your clients see a name they know and replies come straight back to you.
Does it work on iPhone?
AgenText Messenger runs on Android, because it needs to be the phone's default SMS app. Many people use a spare Android phone that stays plugged in at the office as a dedicated line for their agents.
Which AI agents can use it?
Any agent or framework that supports the Model Context Protocol (MCP) over HTTP can use AgenText's tools directly. Anything that can make an HTTP request can use the REST API and receive webhooks — including automation platforms and your own code.
Can I still use my phone normally?
Yes. AgenText Messenger is a complete SMS app. You text as usual, and everything your agents send shows up in the same conversations, so you can read along or reply yourself.
What happens if my phone loses signal or turns off?
Outgoing messages wait in a queue and are sent automatically when the phone reconnects. Texts that arrive while it's offline are uploaded in order once it's back. The bridge also restarts on its own after a reboot.
What does it cost to send a text?
Messages go out over your phone's own mobile plan, so your carrier's normal rates apply — for most plans, that means unlimited texting.
Can I use it for mass marketing blasts?
AgenText is built for conversations, reminders, and follow-ups with people who expect to hear from you — not bulk promotions. Carriers monitor personal lines for spam-like volume, so always text people who've opted in and honor requests to stop.
How do I turn it off?
Flip the API Bridge switch in the app to pause instantly, or tap Unlink to disconnect for good. From the web portal you can remove a phone or revoke any agent's API key at any time.
Put your texting on autopilot.
Keep your hands on the wheel.
Link your phone in minutes and let your agents handle the conversations you don't have time for.