# AgentMessage

> The SMS API built for AI agents. New signups are currently paused and a waitlist is open. Numbers receive texts the moment they are provisioned; outbound sending unlocks once your 10DLC campaign clears carrier review. Pay-as-you-go pricing with carrier and registry fees passed through at cost, and compliance tooling built in.

AgentMessage is a developer-facing SMS platform designed specifically for AI agents that need to send and receive text messages. It is built for what we call AI2P (AI-to-person) traffic: one-to-one, conversational, consent-aware messaging, rather than bulk campaign blasts. AgentMessage operates as a registered Campaign Service Provider (CSP) with a direct partnership with Bandwidth, a Tier 1 carrier network.

New signups are paused. https://agentmessage.io/signup now serves a waitlist form rather than self-serve account creation, and there is no published reopen date. Existing accounts are unaffected and can sign in normally at https://agentmessage.io/signin. The pricing below describes the offering as it stands for existing accounts and as it will apply when signups reopen.

## Receive first

- Phone numbers can receive SMS the moment they are provisioned. No campaign approval is required for inbound traffic.
- That means you can provision a number, text it from your own phone, and watch the message arrive on your webhook in seconds, before any registration paperwork is filed.
- Outbound A2P sending unlocks once your 10DLC campaign clears carrier review. Most campaigns clear carrier review in days, but timelines are set by The Campaign Registry (TCR) and the carriers and are not guaranteed.

## Product

- [Home](https://agentmessage.io): SMS API built for AI agents
- [Waitlist](https://agentmessage.io/signup): Waitlist signup while new account creation is paused
- [Pricing](https://agentmessage.io/pricing): Pay-as-you-go rates, interactive calculator, full carrier and registry fee tables
- [Features](https://agentmessage.io/features): Receive-first numbers, registration tooling, agent-focused infrastructure
- [Resources](https://agentmessage.io/resources): 10DLC help center for builders
- [Docs](https://agentmessage.io/docs): Developer documentation and API reference
- [Report abuse](https://agentmessage.io/complain): Public complaint form for recipients of unwanted messages

## Pricing (pay as you go)

- Free to sign up. $5 starting credit on every new account. No monthly platform fee, no minimum commitment.
- Phone numbers: $0.94 per number per month.
- SMS: $0.0078 per message segment, inbound and outbound. A segment is 160 GSM-7 characters or 70 UCS-2 characters; you pay per segment, not per API call.
- MMS: $0.02 per message.
- iMessage add-on: $150 per line per month with no per-message cost. Each line supports up to 4,000 messages per day and can only message contacts who have messaged you first. Automatic SMS fallback when iMessage is unavailable for the recipient.
- Carrier surcharges: set by the recipient's carrier, passed through at cost with no markup (typically $0.002 to $0.004 per segment). All rates are published on the pricing page.
- 10DLC registry fees: passed through at cost with no markup. Brand registration is a one-time TCR fee (about $4 to $4.50 for most businesses); optional identity vetting is $41.50 standard or $101.50 enhanced; campaigns carry a recurring TCR fee ($10/month for most standard use cases, lower for low-volume, sole-proprietor, and charity campaigns).
- Enterprise: custom volume pricing from $0.0060 per segment for teams sending 1M+ segments per month, with dedicated carrier capacity and custom SLA. Contact: https://agentmessage.io/contact
- Prepaid wallet with spend controls: sending stops when the balance hits zero. Per-number daily caps, per-account monthly caps, and alert thresholds are configurable.

## Key differentiators

- Receive-first: numbers accept inbound SMS immediately on provisioning, so teams can build and test real inbound flows while their campaign is in carrier review.
- AI2P-first (our framing): built for agents that hold real conversations. There is no bulk-send endpoint, no list upload, and no blast scheduler. Every API call sends one message.
- Compliance tooling built in: guardrails are on by default. Consent, opt-out, and quiet-hours enforcement are part of the send path; you stay in control, and every override is logged.
- 10DLC registration tooling built in: a guided brand and campaign wizard, plus an AI review assistant that flags likely rejection causes before you submit. The AI review is an assistant, not an approval or a guarantee; carrier review outcomes are decided by TCR and the carriers.
- Direct CSP: AgentMessage is registered with The Campaign Registry and connected to a Tier 1 carrier network (Bandwidth).
- Transparent pricing: per-segment rates plus carrier and registry fees at cost, all published on one public page. No sales call required.
- One unified API for SMS, MMS, and iMessage, with the same request and response shapes.
- HMAC-signed webhooks with automatic retries for inbound messages and delivery events.
- Consent API with automatic opt-out detection (STOP, UNSUBSCRIBE, CANCEL, END, QUIT) and a queryable consent history.

## Use cases

- AI customer support agents handling order status, shipping questions, and returns
- Appointment reminders and confirmations from scheduling agents
- Transactional notifications (shipping, delivery, verification codes)
- AI-driven lead qualification and sales follow-up with logged consent
- Healthcare reminders and check-ins
- Internal alerting from operational agents

## Technical

- Base URL: https://api.agentmsg.io
- Auth: Bearer token with API keys (am_live_... prefix)
- Send endpoint: POST /v1/messages (one message per call; no batch endpoint by design)
- Consent endpoint: /v1/consent
- Webhooks: HMAC-signed with per-endpoint secrets and automatic retries
- Sandbox environment for testing alongside production

## Compliance posture

AgentMessage provides compliance tooling and enforces platform-level guardrails; it does not warrant regulatory outcomes, and customers remain responsible for their message content, recipient relationships, consent records, and use-case fit.

- Two-gate outbound model: a message may be sent only when the recipient has texted the number first (inbound conversational consent) or explicit consent has been logged through the consent API.
- Opt-out keywords (STOP, UNSUBSCRIBE, CANCEL, END, QUIT) are detected automatically and change send behavior immediately.
- Quiet-hours enforcement is on by default; overrides are logged.
- Rate limits mirror conversational pacing, with ratio enforcement to prevent one-sided blasting.
- No bulk-send endpoint exists at any tier.
- 10DLC brand and campaign registration runs through built-in tooling; registration data accuracy and consent validity remain the customer's responsibility.

## Company

- Product name: AgentMessage (a product of Y3 Labs LLC)
- Category: SMS API / CPaaS / AI agent infrastructure
- Primary domain: agentmessage.io
- Alternate domain: agentmsg.io (301 redirects to agentmessage.io)
- API domain: api.agentmsg.io

## Status

- Signup: open and self-serve at https://agentmessage.io/signup
- Every new account starts with a $5 credit

## FAQ

Q: What is AgentMessage?
A: AgentMessage is an SMS API built specifically for AI agents. Sign up, provision a phone number, and your agent can receive texts immediately; outbound sending unlocks once your 10DLC campaign clears carrier review.

Q: Can my agent receive texts before campaign approval?
A: Yes. Inbound SMS requires no campaign approval. A number can receive texts the moment it is provisioned, so you can wire up webhooks and test conversation flows while your campaign is in carrier review.

Q: How much does AgentMessage cost?
A: Pay as you go: $0.94 per phone number per month and $0.0078 per message segment, inbound and outbound, with carrier and registry fees passed through at cost. Every new account starts with a $5 credit. There is no monthly platform fee. Enterprise volume pricing starts at $0.0060 per segment.

Q: How long does 10DLC verification take?
A: Receiving requires no verification. For outbound, most campaigns clear carrier review in days, but timelines are set by TCR and the carriers and are not guaranteed. The built-in registration wizard and AI review assistant are designed to help you pass review the first time.

Q: Does AgentMessage support iMessage?
A: Yes. iMessage is available as an add-on at $150 per line per month with no per-message cost, up to 4,000 messages per line per day. Lines can only message contacts who have messaged you first, and the unified API falls back to SMS when iMessage is unavailable.

Q: Does AgentMessage handle compliance for me?
A: No platform can make you compliant. AgentMessage builds compliance tooling into the product: consent, opt-out, and quiet-hours enforcement are on by default, registration tooling guides your 10DLC filing, and an AI review flags likely rejection causes before you submit. You remain responsible for your content, consent records, and use-case fit.

Q: Can I test without committing?
A: Not at the moment. New signups are paused, so the first step today is joining the waitlist at https://agentmessage.io/signup. When signups reopen, registration is free with a $5 starting credit, there is no minimum commitment, and a sandbox environment is available for testing.

Q: Can I switch from another provider?
A: Yes. The API follows familiar REST patterns, so migration typically means updating the base URL, API key, and webhook handling. Phone number port-ins are supported.