Zernio
Zernio
API Reference

WhatsApp

Templates

List templatesGETCreate templatePOSTGet templateGETUpdate templatePATCHDelete templateDELETEGet template by idGETUpdate template by idPATCHDelete template by idDELETELook up a library templateGET

Business Profile

Get business profileGETUpdate business profilePOSTUpload profile picturePOSTGet display name statusGETRequest display name changePOSTGet business usernameGETGet username suggestionsGETSet business usernamePOSTDelete business usernameDELETE

Groups

List active groupsGETCreate groupPOSTGet group infoGETUpdate group settingsPOSTDelete groupDELETEAdd participantsPOSTRemove participantsDELETECreate invite linkPOSTList join requestsGETApprove join requestsPOSTReject join requestsDELETE

Blocking

Check if a user is blockedGETList blocked usersGETBlock usersPOSTUnblock usersDELETE

Media

Download WhatsApp mediaGET

Conversions

Get CTWA conversions datasetGETProvision CTWA datasetPOSTList conversion eventsGETSend WhatsApp conversion eventPOST

Account Events

List account notificationsGET

Phone Numbers

Get number statusGETRegister a connected WhatsApp number on the Cloud APIPOSTMove a number to another profilePATCHRequest a Meta re-verification code for a BYO WhatsApp numberPOSTVerify the Meta re-verification code for a BYO WhatsApp numberPOST

Calling

Get calling config for an accountGETEnable calling on a numberPOSTUpdate calling configPATCHDisable calling on a numberDELETECheck call permissionGETList call history for an accountGETInitiate outbound callPOSTGet a single callGETEstimate per-minute costGETGet calling config for a numberGETGet a call recordingGETStart caller-ID verification for a customer-brought numberPOSTConfirm the caller-ID verification codePOST

Flows

List flowsGETCreate flowPOSTGet flowGETUpdate flowPATCHDelete flowDELETEGet flow JSON assetGETUpload flow JSONPUTGet flow preview URLGETList flow versionsGETPublish flowPOSTDeprecate flowPOSTSend flow messagePOSTList flow responsesGETGet Flows encryption key statusGETRegister a Flows encryption keyPOST

Sandbox

List your sandbox sessionsGETStart a sandbox activationPOSTRevoke a sandbox sessionDELETE

Other

Get a number's commerce settingsGETLink a catalog to a WhatsApp numberPOSTList the catalogs linked to a WhatsApp numberGETUnlink a catalog from a WhatsApp numberDELETEUpdate a number's commerce settingsPUT
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WhatsApp

Get template

Retrieve one message template variant by name.

Meta stores one template per name + language, so a name identifies a family of variants, each with its own Meta id. Pass language to address one variant. Without it, a name with a single variant resolves to that variant; a name with several returns 409 ambiguous_template with details.languages. A bare language (es) matches a single regional variant (es_ES); if the family has several regional variants for it, that is also a 409. A full code (es_ES) must match exactly. Variants in PENDING_DELETION are not part of the family.

GET
/v1/whatsapp/templates/{templateName}

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication: send your Zernio API key in the Authorization header, prefixed with Bearer.

In: header

Path Parameters

templateName*string

Template name (the family).

Query Parameters

accountId*string

WhatsApp account ID

language?string

Language code of the variant (e.g. en_US, es, pt_BR). Required when the family has several languages.

Response Body

application/json

application/json

application/json

application/json

{  "success": true,  "template": {    "id": "string",    "name": "string",    "status": "string",    "category": "string",    "language": "string",    "components": [      {}    ],    "message_send_ttl_seconds": 0,    "rejected_reason": "string",    "quality_score": {}  }}
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Create template

Create a new message template. Supports two modes: Custom template: Provide components with your own content. Submitted to Meta for review (can take up to 24h). Library template: Provide library_template_name instead of components to use a pre-built template from Meta's template library. Library templates are pre-approved (no review wait). You can optionally customize parameters and buttons via library_template_body_inputs and library_template_button_inputs. Browse available library templates at: https://business.facebook.com/wa/manage/message-templates/

Update template

Update one variant's components and/or its message_send_ttl_seconds. Name, language and category cannot change after creation. Meta stores one template per **name + language**, so a name identifies a family of variants, each with its own Meta id. Pass `language` to address one variant. Without it, a name with a single variant resolves to that variant; a name with several returns `409 ambiguous_template` with `details.languages`. A bare language (`es`) matches a single regional variant (`es_ES`); if the family has several regional variants for it, that is also a 409. A full code (`es_ES`) must match exactly. Variants in `PENDING_DELETION` are not part of the family. Meta only allows editing templates in `APPROVED`, `REJECTED` or `PAUSED` state; an approved template can be edited once per 24 hours and up to 10 times per 30 days. A component update sends the variant back to Meta for review, so the `status` returned here is normally `PENDING`; a TTL-only update keeps an APPROVED variant approved. The final outcome arrives on the `whatsapp.template.status_updated` webhook (which carries the variant's `templateId` and `language`). A variant already in `PENDING` cannot be edited again until Meta finishes reviewing it.