Chirp is a lightweight, self-hosted messaging platform for WhatsApp. Pair a number, broadcast to thousands, manage replies in a clean inbox, and ship verification codes — all from your own server.
Queue thousands of messages with jittered pacing so sends look natural. Track per-recipient status and retry failures.
Every reply from every chat in one place. Read, reply, react, delete — with proper sender labels and quoted-message context.
Deliver verification codes and transactional notifications through a channel your users already open instead of missed SMS.
Self-hosted SQLite, no third-party routing, no per-message fees. Pair a number, run on your hardware, own every byte.
Order updates, appointment reminders, promo announcements — reach the 98% of inboxes WhatsApp actually opens.
Push critical alerts to on-call rotations, field teams, and ops staff where they'll actually see them within a minute.
Run a creator newsletter, run-club digest, or community announcement list with open rates that put email to shame.
Login codes, payment confirmations, delivery updates — faster and cheaper than SMS on most carriers.
Node + SQLite. Runs on a $5 VPS or your home mini-PC. No Kafka, no Redis, no container circus.
Pair a number by scanning a QR. No marketplace approval, no 24-hour reply window puzzles.
Clean HTTP API for every action — bulk send, inbox, reply, delete. Drop in from any stack. Read the docs →
Messages never leave your server. You decide retention, backups, and access.
By using Chirp ("the Service") you agree not to:
Compliance with the recipient's local law — GDPR, TRAI TCCCPR, CAN-SPAM, PECR, CCPA, and equivalents — is your responsibility, not Chirp's.
Chirp is not affiliated with, endorsed by, or sponsored by WhatsApp LLC or Meta Platforms, Inc. WhatsApp is a trademark of its respective owner. Because Chirp integrates with WhatsApp through an unofficial protocol, Meta may at its sole discretion terminate, suspend, or otherwise restrict any account or phone number connected to the Service, at any time and without advance notice. Chirp cannot prevent, predict, or reverse any such action. You accept this risk as a condition of using the Service.
The Service is provided "AS IS" and "AS AVAILABLE" without warranty of any kind, whether express, implied, or statutory, including but not limited to warranties of merchantability, fitness for a particular purpose, accuracy, non-infringement, availability, or uninterrupted operation. We do not warrant that any message will be delivered, delivered on time, or delivered to the intended recipient.
To the maximum extent permitted by applicable law, in no event shall Chirp, its operators, contributors, or licensors be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, revenue, goodwill, data, business opportunity, or other intangible losses, arising out of or in connection with your use of or inability to use the Service — whether based in contract, tort (including negligence), strict liability, or any other legal theory, and whether or not Chirp has been advised of the possibility of such damages. Where liability cannot be excluded by law, aggregate liability is capped at the greater of (a) the fees you have actually paid to use the Service in the three months preceding the claim, or (b) USD 50.
You agree to defend, indemnify, and hold harmless Chirp and its operators from and against any and all claims, damages, obligations, losses, liabilities, costs, and expenses (including reasonable attorneys' fees) arising from: (i) your use of the Service; (ii) your violation of these Terms; (iii) your violation of any third-party right, including any intellectual-property, privacy, or consumer-protection right; or (iv) any content you transmit through the Service.
We may suspend, rate-limit, or terminate your access to the Service at any time, for any reason or no reason, without notice or liability. You may stop using the Service at any time; termination does not entitle you to a refund.
We may modify, add, or remove features at any time, and we may revise these Terms at any time by posting an updated version. Continued use of the Service after changes are posted constitutes acceptance of the revised Terms.
All rights in the Chirp name, logo, design, code, and content are reserved. Nothing on this site grants you any license to any Chirp trademark or proprietary content. Third-party trademarks referenced here are the property of their respective owners.
These Terms are governed by the laws of the operator's principal place of business, without regard to conflict-of-laws rules. Any dispute arising out of or relating to the Service or these Terms shall be resolved exclusively in the courts or arbitration forums of that jurisdiction, and you consent to the personal jurisdiction of those forums. Where permitted by law, you waive any right to participate in a class, collective, or representative action.
For questions or legal notices, contact the operator using the contact details provided at the time of account creation.
These terms are offered as a starting point and are not a substitute for legal advice. Consult qualified counsel before relying on them.