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Douyin advertising runs through the Ocean Engine advertising platform and its Open Platform APIs. The official SDK calls its API surface Marketing API and lists advertiser, campaign, event-management, and conversion-signal operations. See Ocean Engine Open Platform and the official Java SDK.

Use ad-conversion-hub for the canonical event envelope, consent gate, identity rules, retry policy, and adapter contract. Pair it with ad-experiments for one-audience tests, seed sizing, PII-export authorization, and payment-provider truth.

Account and access

Ocean Engine offers self-serve advertiser account opening. Its official help page directs advertisers to register, open an account, and enter the ad delivery backend through the self-service route.

The public Marketing API is permissioned. The official SDK requires developer registration and API access permission before use. See the SDK's usage conditions.

The SDK lists these OAuth operations:

• POST /open_api/oauth2/access_token/ exchanges app_id, auth_code, and secret in the generated request model. See the access-token API and request model.
• POST /open_api/oauth2/refresh_token/ uses refresh_token and secret, with optional app_id. See the refresh API and refresh model.
• GET /open_api/oauth2/advertiser/get/ accepts access_token as a query parameter and returns authorized management or business accounts. See the advertiser API.

For ordinary SDK calls, the official setup uses https://api.oceanengine.com and an Access-Token header. See the SDK's client setup.

Ocean Engine defines no environment-variable names in these sources. Choose deployment names through the hub adapter configuration. Keep app secrets, tokens, and advertiser IDs on the server.

Client-side tag or pixel

Do not install a standalone Douyin browser pixel from this skill. The fetched official SDK publishes server API operations and does not publish a browser tag installation contract in its API index.

For web measurement, DataFinder is a separate Volcengine product. Its official documentation describes a Web/JS SDK and campaign monitoring links. See the DataFinder Web/JS SDK.

Use DataFinder only when the campaign owns that product configuration. Do not rename DataFinder fields as Ocean Engine Ads fields. Send canonical first-party events through the hub's event contract.

Rule setup and event mapping

Create an event asset in Event Management when the advertiser workflow needs one. The official visual debugger shows POST https://api.oceanengine.com/open_api/2/event_manager/assets/create/ with advertiser_id and asset_type fields. See create event asset.

The official SDK lists event-management operations for available events, event configuration, event creation, and monitoring-link creation, reading, and update. See the event API index.

Use the available-event response and the account's asset configuration. Do not translate hub names into platform names from memory.

The public request model documents the signal names used in this mapping. See the model's event_name field.

The public request model documents these signal names: launch_app, active, purchase, game_addiction, register, and log_in. See the request model.

Server-side conversions API

Ocean Engine exposes a public, permissioned conversion-signal operation. The official Java SDK names it AdConvertSignalV2Api and labels it a global incremental-effect API. See the official API class and SDK index.

The verified route is:

POST https://api.oceanengine.com/open_api/2/ad_convert/signal/
Access-Token: <server-token>
Content-Type: application/json

The SDK declares JSON input and a 200 OK response for this operation. The response body itself carries code, message, data, and request_id fields. See the signal API class and response model.

An HTTP 200 proves the request reached Ocean Engine. It does not prove the signal was accepted — read the response body's code on every call and treat a non-success code as a failed dispatch under the hub's retry policy, the same way the response's HTTP status alone would be insufficient. The reviewed sources do not publish the exact success value for code; confirm it against the current response model or a live response before implementing the success/failure check, and fail closed (treat the dispatch as failed) if code is absent or unrecognized. Record the redacted code, message, and request_id in the dispatch log.

The request model exposes these fields, among others:

{
  "account_ids": [1234567890],
  "event_name": "purchase",
  "event_time": 1767225600,
  "user_unique_id": "<advertiser-user-id>",
  "params": "<single-level-event-properties-as-json>"
}

The public model describes event_time as a seconds timestamp and params as a single-level JSON map serialized as a string. Send event_time as the numeric epoch-seconds value shown above, not a quoted string. See the request model.

The generated model marks every request property nullable. See the generated request model. Do not infer account-specific required fields from that generator output. Use only fields that the approved account and current product flow support.

Do not treat this specialized route as a generic website CAPI. The reviewed official sources publish no generic website conversion contract, and this endpoint applies only to accounts whose documented Event Management return method is AdConvertSignal — confirm that return method in the console before sending signup or purchase here. When the account's documented return method is Event Management with DataFinder monitoring links instead, use that route rather than AdConvertSignal. See Event Management and API return and the SDK API index.

Identity and consent

The public conversion model exposes user_unique_id, android_id, idfa, idfv, oaid, odid, ipid, ipv4, and ipv6. See the verified request fields.

The same public model exposes no email or phone field and defines no hashing rule. See the generated request model. Do not hash or upload email, phone, IP, or external IDs for this adapter unless a current Ocean Engine contract names the field and transformation.

Apply the hub consent gate before first-party measurement or vendor dispatch. Require the hub's measurement consent for ad events and its ad_user_data consent before sending identity. See the hub's consent gate.

Click ID and first-party cookie

The public conversion request model contains no Douyin click-ID or cookie field. Do not invent ttclid, douyin_click_id, or another parameter. See the complete request model.

DataFinder uses monitoring links for campaign measurement. Its documentation describes utm_campaign, utm_source, utm_medium, utm_term, and utm_content as event or user attributes. See DataFinder attribution attributes.

For web campaigns, DataFinder says its Web SDK stores campaign attributes in a cookie and sends them with later events. These are DataFinder attributes, not verified Ocean Engine Ads click IDs. See the DataFinder web attribution guide.

Capture only approved monitoring-link values in the hub's click_ids map. Keep first-touch and latest values when the measurement design needs both. Follow the hub's click-ID rules.

Never require a click ID before recording a confirmed purchase. Organic, direct, email, and SEO events still need first-party measurement through the hub.

Deduplication

The public conversion request model exposes no event_id, eventId, or conversion deduplication field. Do not send one as a guessed parameter. See the request model.

Keep the hub event_id in the local dispatch record. Add it to a vendor request only when a current Ocean Engine contract documents that field.

Use the hub's bounded retry and dead-letter policy. Do not replay an uncertain request unless the vendor contract documents idempotency or deduplication. See the hub's adapter contract.

Campaign and Event Management settings that override code

Event Management controls the asset, event, return method, and monitoring-link configuration. The official setup guide places these choices in the advertiser console. See Event Management setup.

The same guide describes optional debugging and later association with an optimization goal. Treat the console state as authoritative. See the debugging workflow.

Do not assume an API-created asset is ready for optimization. Confirm the asset, event, API return method, monitoring links, and account objective in the console before launch.

Verification

Use three proofs:

1. Request proof: record a redacted response from OAuth, asset creation, or AdConvertSignal dispatch, including the signal response's code and message. The SDK declares 200 OK for the signal call, but only a success code in the body proves Ocean Engine accepted the record. See the signal API class.
2. Platform proof: use Event Management debugging and reporting to confirm the configured event and its received data. The official guide describes that debugging flow. See DataFinder and Ocean Engine setup.
3. Business proof: reconcile purchase, refund, and subscription events with payment-provider truth through the hub.

A successful HTTP response proves request handling only. It does not prove attribution or optimization delivery.

Common pitfalls and security

• Do not use a TikTok Ads endpoint for Ocean Engine. Use the Ocean Engine API index.
• Do not install a guessed browser pixel or tag ID. The official campaign guide documents the monitoring-link route instead.
• Do not invent an event name, click ID, hash rule, or deduplication field. See the signal model.
• Do not treat event-asset creation as conversion receipt. Verify it through device debugging.
• Do not treat a monitoring link as a server conversion postback. See the campaign guide.
• Do not treat a configured event as attributed revenue. Reconcile through the hub.
• Keep app secrets, tokens, device IDs, and advertiser data server-side. See the hub adapter contract.
• Redact tokens, identifiers, and event properties from logs and screenshots. See the hub security rules.
• Return skipped only when a required secret, account configuration, or contract detail is absent before dispatch is attempted. Treat a permission-denied response from the API (for example an expired token or a revoked OAuth grant) as failed, not skipped — the hub's adapter contract reserves skipped for known absent configuration and failed for a rejected request, so an integration that loses permission stays visible instead of going silently missing. See hub adapter contract.
• Keep ad dispatch failures separate from payment webhook success.

The last two behaviors follow the hub's failure-isolation rules. See the hub adapter behavior.

Official sources checked (2026-08-29)

• Ocean Engine self-serve advertising
• Ocean Engine account-opening requirements
• Ocean Engine Open Platform
• Official Java SDK
• SDK API index
• OAuth access-token API
• OAuth refresh-token API
• OAuth advertiser API
• OAuth request models · refresh model
• AdConvertSignal API
• AdConvertSignal request model
• Event asset visual debugger
• Event Management and API return
• DataFinder Web/JS SDK
• DataFinder attribution attributes