# Verify for developers Confirm access. Keep it simple. Verify control of a phone number or email address. [Get started](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Fverify) [Contact Sales](/demo?product=verify) [Read customer stories](/customers) [Explore Enterprise](/enterprise) - [Airwallex](/customers/airwallex) - [Glovo](/customers/glovo) - [Zillow](/customers/zillow) - Uber - [Binance](/customers/binance) - Adobe - Meta - PayPal - Pinterest - Square - [Al Jazeera](/customers/aljazeera) - [Aramex](/customers/aramex) - [Bazaar Technologies](/customers/bazaar) - [ComparaOnline](/customers/compara) - [Emma](/customers/emma) ## From a code to confirmed. Send a code and check the recipient’s answer. Build with your agent, terminal or preferred SDK. **MCP**: `Bird MCP` ```json https://mcp.bird.com ``` ## A code received. A recipient confirmed. Bring the verification into your sign-in flow. Collect the code, check the answer, and help the customer continue. Harbor Secure account access ### Confirm your number We sent a six-digit code to +1 555 123 4567 MESSAGES now Bird Verify Your verification code is 123456 . 1 2 3 4 5 6 Code confirmed Recipient confirmed `success: true` Your application decides whether to grant access. Correct codeWrong codeExpired [Explore recipient verification](/docs/guides/verify/sending-verifications#check-the-code) Illustrative product records. These controls change the example only; no request or purchase is made. ## Another channel. The same verification. Keep signup moving when the first code does not arrive. Use the next eligible channel in the recipient’s plan. Delivery failedNo code received Verification delivery `vrf_…1048` A +1 555 123 4567 One recipient · Two eligible channels - WhatsApp Delivery failed Failed - SMS Next eligible channel Code sent Harbor Your verification code is 123456. Delivered Continue on SMS The recipient can now enter the code. Same verification Same expiry `pending` [User-requested fallback](/docs/guides/verify/sending-verifications#send-the-code-on-another-channel) [Explore channel configuration](/verify-api/features/orchestration) Illustrative product records. These controls change the example only; no request or purchase is made. ## Follow every attempt. Keep the final answer. See delivery, checks and the final answer together. Give every signup a traceable result. Verifications `Production / Signup 1048` A Recipient +1 555 123 4567 Verified Verification vrf_…1048 Channel SMS Created 10:42:00 UTC Activity - Verification created Code generated and delivery requested 10:42:00 - Code delivered Recipient check still pending 10:42:02 - Correct code checked The recipient supplied a matching code 10:42:18Check response `200 OK` `{ "success": true }`verified VerifiedExpiredAttempts exhausted Store this definitive result in your application. [Verification settings](/docs/guides/verify/sending-verifications#verification-settings) [Explore verification events](/docs/guides/verify/sending-verifications#track-verifications-in-the-dashboard) Illustrative product records. These controls change the example only; no request or purchase is made. ## Explore Verify. From requesting a code to checking the result. Make every step clear. [Verify API Send a passcode. Check whether the answer is correct.](#integrate)[SMS verification Deliver a verification code by text message.](/verify-api/features/sms)[Email verification Confirm control of an email address.](/verify-api/features/email)[WhatsApp verification Deliver a managed passcode through WhatsApp.](/verify-api/features/whatsapp)[Fallback delivery Give an undelivered code another configured route.](/verify-api/features/orchestration)[Country controls Choose where and how verification delivery is attempted.](/docs/guides/verify/countries)[Sender branding Choose the identity customers see with the code.](/docs/guides/verify/senders)[Code controls Set code lifetimes, attempt limits and resend cooldowns.](/docs/guides/verify/sending-verifications#options)[Verification logs Inspect the state and timing of a verification attempt.](/docs/guides/verify/sending-verifications#track-verifications-in-the-dashboard)[Webhooks React to verification lifecycle events.](/docs/guides/verify/events) ## Scale without losing control. Organize teams in workspaces, control API access, and trace changes through audit logs. Harbor Organization Workspaces Production Sandbox ### Delivery agent API key · Customer operations team Active Permissions Access Email Read & write SMS Read & write WhatsApp Read Read & write AL Alex Lee Admin Permissions updated ### Audit log Production API key updated Alex Lee · 09:42:18 UTC Workspace Production Resource Delivery agent WhatsApp Read Read & write Succeeded [Workspaces](/docs/guides/workspaces)[Team roles](/docs/guides/users-teams-roles)[API authentication](/docs/guides/authentication) [Explore Enterprise](/enterprise) Examples: [MCP](/de-de/verify-api.mcp.md) · [CLI](/de-de/verify-api.cli.md) · [TypeScript](/de-de/verify-api.ts.md) · [Python](/de-de/verify-api.py.md) · [Go](/de-de/verify-api.go.md) · [PHP](/de-de/verify-api.php.md) · [cURL](/de-de/verify-api.curl.md) ## Start with Verify. Build across channels with Bird. [Get started](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Fverify) · [Contact Sales](/demo?product=verify) [Email](/email-api) · [SMS](/sms-api) · [WhatsApp](/whatsapp-api) · [Apple Messages](/apple-messages-api) · [Voice](/voice-api) ## Related resources - [Verify phone numbers at signup](/learn/series/verify-phone-numbers-at-signup) (video) - [Verify your first customer](/docs/get-started/verify-your-first-customer) (docs) - [What does OTP mean? One-time passwords explained](/explained/verify/what-does-otp-mean) (answer) - [Build your first integration](/learn/paths/integration) (course) [Get an implementation brief](/learn/workspace?topic=verify)