Callbacks
Variants seen in the corpus:
Callbackscallbacks
A resource tag, not a market
No company describes its business as “Callbacks”. It names something an API does — and 39 providers reach it through a specification or operation tag. The APIs below are the answer to this tag; the companies are not.
Providers using this tag (0)
No company classifies itself here — see the resource-tag note above, and the APIs below.
APIs with this tag (39)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 7 Complete, well-documented, and agent-ready
HubSpot Automation Actions v4 APIHubSpot Automation Actions v4 — 18 operation(s) from HubSpot's published OpenAPI.Klarna Push NotificationsOutbound HTTP POST callbacks Klarna issues to merchant-hosted URLs for Payments authorization, HPP status u...Adobe Suite Callbacks APIA callback is a message that Platform sends to a URL host whenever a new audit event is generated.Kinde Callbacks APIThe Callbacks API from Kinde — 2 operation(s) for callbacks.Adobe Launch Callbacks APIManage webhook callbacks triggered by audit events.Bolt Financial Callbacks APIImplement Callback endpoints on your servers to power Bolt experiences. Different Bolt packages require dif...Vibes Platform Callbacks APIRegister and manage callback endpoints for opt-in and delivery notifications.
Strong 4 Solid coverage with minor gaps
NexGen Cloud Callbacks APIWebhook callback registrations on virtual machines and volumes for state-change notifications.Verizon Callbacks APICallback subscription managementMastercard Callbacks APIThis API is to be used by the payment provider to notify payment status to relevant Mastercard Applications...Webex Callbacks APIAPIs for scheduling and managing callbacks for customers.
Developing 8 Usable, with meaningful gaps to close
Livepeer Webhooks APIWebhook management endpoints plus outbound event notifications for stream lifecycle events (stream.started,...Zai Callbacks APIThe Callbacks API from Zai — 4 operation(s) for callbacks.Telia Bulk Messaging SMS Callback APIThe webhook half of Telia's Bulk Messaging REST surface. Customers must implement a Receive SMS (mobile ori...NHS England Callbacks APIThe Callbacks API from NHS England — 3 operation(s) for callbacks.R2 callbacks APIThe callbacks API from R2 — 2 operation(s) for callbacks.Fazz Callbacks (Webhooks)HTTP POST webhook callbacks that notify your endpoint of payment and disbursement status changes in JSON, v...Kinde Callbacks APIThe Callbacks API from Kinde — 2 operation(s) for callbacks.PDFfiller Callbacks APIManage webhook callbacks for document events
Thin 13 Limited public surface area
Docsumo Webhooks APIAccount-configured webhook callbacks that POST a JSON payload to your endpoint when a document changes proc...Accurate WebhooksWebhook event notifications configured in the Accurate developer portal deliver order and report status upd...POKKT Gratification APIServer-to-server rewarded-video confirmation callback. When a user completes a rewarded video, POKKT issues...Scrive Callbacks APIThe Callbacks API from Scrive — 1 operation(s) for callbacks.Telnyx Callbacks APICallbacksDropbox Sign Events and Callbacks APIOutbound event / callback surface for Dropbox Sign. The platform POSTs JSON event payloads (wrapped in a `m...Madeiramadeira Callbacks APIThe Callbacks API from Madeiramadeira — 2 operation(s) for callbacks.PhonePe S2S Callback / WebhookServer-to-server callback that PhonePe POSTs to a merchant-configured URL on terminal payment events. Paylo...FreshBooks Webhooks (Callbacks API)Event delivery surface for the FreshBooks Callbacks API. Subscribers register an HTTPS endpoint, complete a...Paytm Status Notification WebhookServer-to-server notification posted to a merchant-configured URL when a transaction reaches a terminal sta...AU10TIX Webhooks APIPushes verification decisions to a customer-registered callback URL the moment a workflow reaches a termina...Shyft Callbacks APIThe Callbacks API from Shyft — 3 operation(s) for callbacks.Jumio Callback / WebhookServer-to-server callback delivering verification results. Jumio POSTs the final decision and metadata to a...
Emerging 7 Early or largely undocumented
Tripo WebhookServer-to-server webhook delivery of task lifecycle events. Customers register a callback URL and receive n...Reggora Webhook Events APISubscribe to server-to-server webhook callbacks that notify an integration when an order is created or upda...HireVue WebhooksServer-to-server event delivery covering interview lifecycle, assessment completion, scheduling events, and...LiqPay Webhooks (Callbacks)Server-to-server callback notifications sent by LiqPay to the merchant server_url on payment events includi...Buildium WebhooksOutbound webhook events emitted by Buildium for changes to entities such as leases, tenants, work orders, a...AstroPay WebhooksPlatform-wide webhook callback system for AstroPay. Webhooks are signed and delivered for asynchronous paym...NuPay for Business - Event WebhooksSigned webhook callbacks delivering payment-status and refund-status updates to merchant-configured endpoin...
Companies reaching this through an API (39)
These companies publish an API, specification or operation carrying “Callbacks” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Accurate Background
Adobe Launch
Adobe Suite
AstroPay
AU10TIX
Bolt Financial
Buildium
Docsumo
Dropbox Sign
Fazz
FreshBooks
HireVue
HubSpot
Jumio
Kinde
Kinde
Klarna
LiqPay
Livepeer
Madeiramadeira
Mastercard
NexGen Cloud
NHS England
Nu (Nubank)
Paytm
PDFfiller
PhonePe
Pokkt
R2
Reggora
Scrive
Shyft
Telia Company
Telnyx
Tripo AI
Verizon
Vibes Platform
Webex
Zai
Score breakdown
Frequency
49.3
log-scaled weighted occurrences
Breadth
0.0
spread across providers
Quality lift
24.9
mean composite of providers using it
Cohesion
3.3
strength of nearest seed neighbor
Related tags
Properties 6 co-occurrences
Reconciliation 5 co-occurrences
Checkout 8 co-occurrences
Payouts 5 co-occurrences
Refunds 5 co-occurrences
SMS 6 co-occurrences
Cards 5 co-occurrences
Identity Verification 5 co-occurrences
Where this tag comes from
Api tag38
Openapi tag17
Openapi op tag69
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.