APIs - H
APIs starting with H.
HAProxy Data Plane API
The HAProxy Data Plane API is a REST API for managing HAProxy configuration dynamically. It allows runtime configuration of frontends, backends, servers, ACLs, and other HAProxy objects without req...
HAProxy Data Plane API
HAProxy's Data Plane API is a modern REST API for dynamically configuring the HAProxy load balancer without restarting. Enables runtime management of backends, servers, frontends, and ACLs in high-...
HCP Packer Artifact Registry API
REST API for managing Packer artifacts in the HashiCorp Cloud Platform Packer Artifact Registry, including buckets, versions, builds, channels, packages, SBOMs, vulnerabilities, and registry config...
HCP Terraform API
The HCP Terraform API provides programmatic access to all HCP Terraform features including workspace management, runs, state versions, policies, teams, organizations, VCS integrations, and the priv...
HCP Vagrant Box Registry API
The HCP Vagrant Box Registry API provides REST endpoints for managing Vagrant box registries and boxes on the HashiCorp Cloud Platform. The API uses HCP service principal credentials for authentica...
HDFS REST API (WebHDFS)
RESTful API for Hadoop Distributed File System operations including file operations, directory operations, and file status queries.
HERE APIs
RESTful web services that serve different purposes - from search, to geocoding, to routing. Whether you're providing truck routing for fleets or navigating users through the city with different tra...
HL7 FHIR R4 Healthcare API
HL7 FHIR R4 (v4.0.1) is a widely adopted normative FHIR standard for healthcare data exchange. FHIR R4 REST APIs are the most commonly implemented version across US healthcare systems, supporting p...
HMDA Data Browser API
The HMDA Data Browser API exposes Home Mortgage Disclosure Act submission data with both nationwide and filtered (LEI, state, county, MSA/MD) aggregation reports as JSON, plus raw CSV streams and a...
HMDA Institutions API
Returns the financial institutions registered to file HMDA data with the CFPB, keyed by year and Legal Entity Identifier (LEI). Used by filers and researchers to confirm filer identifiers, registra...
HMRC VAT (Making Tax Digital) API
The HMRC VAT (Making Tax Digital) API enables software to submit VAT returns, retrieve VAT obligations, liabilities, payments, penalties, and customer details in compliance with UK Making Tax Digit...
HP PrintOS Device API
The HP PrintOS Device API enables device manufacturers and print shop IT developers to attach their devices to the PrintOS Cloud Platform. Once provisioned, devices can make secure REST calls to in...
HP Workforce Solutions Analytics API
The HP Workforce Solutions Analytics API (formerly TechPulse Analytics API) provides insightful analytics on planning, cost optimization, and service management capabilities for devices enrolled in...
HTTPie
HTTPie is a user-friendly command-line and web-based HTTP client designed for interacting with APIs. It provides an intuitive interface for crafting HTTP requests, inspecting responses, and managin...
Hacker News API
The Hacker News API provides access to items (stories, comments, jobs, Ask HNs, polls), users, and live data via Firebase endpoints. It is a public, read-only REST API that exposes the full dataset...
Handwrite IO API
The Handwrite API allows you to send handwritten notes in an automated manner using REST endpoints. Integrate personalized handwritten correspondence into your workflows and applications.
Harbor API
The Harbor API enables programmatic access to the Harbor community platform, allowing brands to manage their superfan community, rewards programs, and engagement features.
Harbor Compliance API
The Harbor Compliance API enables partners to integrate compliance management capabilities into their platforms, streamlining workflows for business licensing, registered agent services, and compli...
Harness Cloud Cost Management API
The Harness CCM API provides programmatic access to cloud cost data, perspectives, budgets, anomaly detection, AI-driven recommendations, cost categories (chargeback / showback), and cloud connecto...
HashiCorp Nomad
HashiCorp Nomad is a flexible workload orchestrator that deploys and manages containers, legacy applications, microservices, and batch jobs. It supports Docker, Java, VMs, and executables with a si...
HashiCorp Nomad HTTP API
The HashiCorp Nomad HTTP API provides programmatic access to all Nomad functionality including job scheduling, allocation management, node operations, deployments, services, evaluations, namespaces...
HashiCorp Vault
Secure, store, and tightly control access to tokens, passwords, certificates, encryption keys for protecting secrets, and other sensitive data using a UI, CLI, or HTTP API.
HashiCorp Vault HTTP API
The Vault HTTP API provides full access to Vault via HTTP. Every aspect of Vault can be controlled via this API. The Vault CLI uses the HTTP API to access Vault functionality.
HashiCorp Vault KV Secrets Engine API
The KV v2 secrets engine provides key-value secret storage with versioning, metadata management, soft delete, and permanent destruction of secret versions. Essential for storing static secrets like...
HashiCorp Vault System Backend API
The Vault system backend provides management operations for authentication methods, secrets engine mounts, ACL policies, token lifecycle, and lease management. All sys/ endpoints control the core o...
Hatchet API
Hatchet is a distributed task queue and workflow engine for building resilient backend applications with durable execution. The REST API exposes operations for tasks, workflow runs, events, filters...
Hazelcast REST API
Hazelcast provides a REST API for interacting with the distributed data grid, supporting operations for maps, queues, cluster management, configuration reload, and health checks over HTTP.
Hearthstone Game Data API
Provides access to Hearthstone card data including card search, card back collections, deck building, and metadata such as card sets, classes, card types, rarities, and keywords. Requires OAuth 2.0...
Helicone
Helicone is an open-source LLM observability platform and AI gateway. The worlds fastest-growing AI companies rely on Helicone to route, debug, and analyze their applications. With one line of code...
Helicone AI Gateway API
The Helicone AI Gateway API provides OpenAI-compatible endpoints for routing requests to 100+ AI models across providers including OpenAI, Anthropic, Google, Groq, and more. It offers a unified API...
Helicone Dashboard API
The Helicone Dashboard API provides endpoints for querying dashboard scores and analytics data. It supports programmatic access to the aggregated metrics and scoring data available in the Helicone ...
Helicone Evals API
The Helicone Evals API provides endpoints for creating evaluations, querying evaluation results, retrieving scores, and analyzing score distributions. It enables developers to systematically assess...
Helicone Experiment API
The Helicone Experiment API enables developers to create experiment datasets, run evaluators, update experiment metadata, and manage experiment workflows. It supports systematic prompt experimentat...
Helicone Model Registry API
The Helicone Model Registry API provides a public endpoint for retrieving the complete catalog of AI models and provider endpoints that the Helicone AI Gateway can route to. This allows developers ...
Helicone Prompt API
The Helicone Prompt API provides endpoints for creating, querying, updating, and deleting prompts and prompt versions. It supports prompt environments, tagging, versioning, and production deploymen...
Helicone Property API
The Helicone Property API provides endpoints for querying custom properties attached to requests. Custom properties allow developers to segment and filter their LLM request data by arbitrary metada...
Helicone Request API
The Helicone Request API allows developers to query, retrieve, and manage LLM request data. Endpoints include querying requests with filters, retrieving requests by IDs, submitting feedback and sco...
Helicone Session API
The Helicone Session API allows developers to query sessions, retrieve session metrics, and submit session feedback. Sessions enable tracing and debugging of multi-step LLM interactions and agent w...
Helicone Trace API
The Helicone Trace API provides endpoints for logging traces from AI applications. It enables developers to capture and log multi-step interactions, tool calls, and agent workflows for observabilit...
Helicone User API
The Helicone User API provides endpoints for querying user data, retrieving user metrics, and getting user metrics overviews. It enables developers to track per-user usage, costs, and performance a...
Helicone Webhook API
The Helicone Webhook API provides endpoints for creating, listing, and deleting webhooks. Webhooks enable developers to receive real-time notifications about events in their Helicone workspace, sup...
Helidon
Helidon is a collection of Java libraries from Oracle for writing microservices that run on a fast web core powered by Netty, supporting MicroProfile and reactive programming models.
Hello Retail API
Hello Retail provides a REST API for personalized product recommendations, on-site search, page-driven product listings, and customer bias retrieval. The helloretail.js script wraps the API as an e...
Helm Chart Repository API
The Helm Chart Repository API defines the HTTP endpoints used by Helm clients to discover and download charts from a repository server. This includes the index.yaml endpoint for chart discovery and...
Heroku Platform API
The Heroku Platform API enables programmatic access to Heroku's deployment platform, including apps, dynos, add-ons, pipelines, and other platform resources.
Heroku Platform API
Heroku pioneered the "git push" deployment model and remains a leading PaaS for rapid application deployment. The Heroku Platform API manages apps, dynos, config vars, add-ons, pipelines, review ap...
Hetzner Cloud API
The Hetzner Cloud API allows managing cloud servers, load balancers, networks, firewalls, volumes, and other cloud resources programmatically.
Hex API
The Hex API provides programmatic access to projects, project runs, data connections, collections, sharing, groups, and users on the Hex collaborative analytics platform.
High Mobility Vehicle API
The High Mobility Vehicle API provides access to real-time connected car data including vehicle telemetry, diagnostics, location, fuel levels, door state, and other vehicle capabilities.
Hilton Developer API
Hilton provides developer APIs for hotel search, availability, reservations, and loyalty program integration. The APIs enable travel partners and corporate clients to integrate Hilton booking capab...
Home Depot API
The Home Depot API provides access to product catalog data, inventory availability, store locations, and pricing information for partners and affiliates integrating with Home Depot's retail platform.
Honeycomb API
The Honeycomb API is a REST API that provides programmatic access to the Honeycomb observability platform. It enables developers to send events, manage datasets and columns, create and run queries,...
Honeycomb Boards API
The Honeycomb Boards API allows developers to programmatically create and manage boards, which are collections of queries displayed together as a dashboard-like view. Boards provide a way to organi...
Honeycomb Datasets API
The Honeycomb Datasets API provides management capabilities for datasets, which represent collections of related events from the same source. It allows developers to list, create, and update datase...
Honeycomb Environments API
The Honeycomb Environments API provides administrative capabilities for managing environments within a Honeycomb team. Environments allow organizations to separate telemetry data across different s...
Honeycomb Events API
The Honeycomb Events API is the lowest-level interface for sending event data to Honeycomb. It supports both single event creation and batch event submission, allowing developers to send structured...
Honeycomb Markers API
The Honeycomb Markers API enables developers to create and manage markers that indicate points in time on graphs where notable events occurred, such as deploys, configuration changes, or outages. M...
Honeycomb Queries API
The Honeycomb Queries API allows developers to programmatically create and manage query specifications within Honeycomb. Queries are used to identify and reference queries across other parts of the...
Honeycomb SLOs API
The Honeycomb SLOs API enables developers to define and monitor Service Level Objectives programmatically. It supports creating, listing, updating, and deleting SLO objects for an organization. Com...
Honeycomb Triggers API
The Honeycomb Triggers API allows developers to programmatically configure alerting rules that fire when query results meet specified conditions. Triggers work in conjunction with the Recipients AP...
Hookdeck API
The Hookdeck REST API provides programmatic access to the Hookdeck Event Gateway platform. It enables management of sources, destinations, connections, transformations, events, attempts, metrics, a...
Horoscope API
The Horoscope API provides daily, weekly, and monthly horoscope predictions for each zodiac sign, delivering personalized astrological insights in JSON format.
Hosted Payment Page (HPP)
Hosted Payment Page (HPP) API is a service that lets you integrate Klarna Payments without the need of hosting the web page that manages the client side of Klarna Payments.
Hotel Search API
The Starwood Hotel Search API allowed partners and developers to search Starwood's portfolio of hotels and resorts by location, dates, and availability. It supported querying by country, province, ...
Hotglue API V2
The Hotglue API v2 enables programmatic management of embedded integrations including linked connectors, flow configurations, job execution, tenant management, and connector state for SaaS product ...
Hotjar REST API
The Hotjar REST API provides programmatic access to Hotjar data and functionality. It allows developers to export survey responses, automate user lookup and deletion requests, and integrate Hotjar ...
Hoverfly Admin API
The Hoverfly Admin API provides programmatic control of a Hoverfly instance, including simulation management, mode and middleware configuration, journal and diff inspection, state management, cachi...
Httpstat.us API
A simple service for generating various HTTP status codes. Use this API to test how your scripts handle different HTTP responses. Returns the specified HTTP status code on every request.
HubSpot Analytics Events API
Custom events allow you to track advanced user activity via a JavaScript or HTTP API. The events API enables you to send custom event occurrences, define event schemas, and retrieve historical even...
HubSpot Authors API
Use the blog authors API to manage author information for your blog posts.
HubSpot CMS HubDB API
The HubDB API allows you to create, update, and delete HubDB data tables and their rows. HubDB tables can be used as data sources for dynamic CMS pages and are available in both draft and published...
HubSpot CMS Pages API
The CMS Pages API provides endpoints for creating and managing site pages and landing pages hosted on HubSpot. You can create, retrieve, update, publish, and delete both site pages and landing page...
HubSpot CRM Associations API
The associations endpoints allow you to manage relationships between CRM object records such as contacts, companies, deals, and tickets. You can create, retrieve, and delete associations with or wi...
HubSpot CRM Feature Flags API
The feature flags API allows public app developers to manage feature flags for their HubSpot app installations. Feature flags can be used to control the rollout of new functionality to specific acc...
HubSpot CRM Lists API
The Lists API allows you to create and manage lists of CRM records based on static membership or dynamic filter criteria. Lists can be used to segment contacts, companies, and other CRM objects for...
HubSpot CRM Search API
The CRM Search API allows you to query and filter CRM objects using a flexible search interface. You can search across contacts, companies, deals, tickets, and other object types using filter group...
HubSpot Commerce Payments API
The payments endpoints allow you to retrieve data about payment transactions processed through HubSpot Commerce. You can retrieve payment details, manage subscriptions, and access transaction histo...
HubSpot Commerce Subscriptions API
The subscriptions API allows you to retrieve data about recurring subscription records in HubSpot Commerce. Subscriptions are created when a customer purchases a recurring product through HubSpot p...
HubSpot Companies API
Company records store data about businesses and organizations. The companies endpoints allow you to manage this data and sync it between HubSpot and other systems, including creating, retrieving, u...
HubSpot Contacts API
Contact records store information about individuals. The contacts endpoints allow you to manage contact data and sync it between HubSpot and other systems. You can create, retrieve, update, and del...
HubSpot Conversations API
The conversations API enables management of inboxes, channels, threads, and messages within HubSpot's conversations system. You can retrieve conversation data, update thread statuses, send messages...
HubSpot Custom Workflow Actions API
Custom workflow actions allow you to extend HubSpot workflows by creating reusable actions that can be installed by HubSpot users. The custom workflow actions API allows you to define, manage, and ...
HubSpot Deals API
A deal stores data about an ongoing transaction or sales opportunity. The deals endpoints allow you to manage deal records and sync data between HubSpot and other systems, supporting the full lifec...
HubSpot Domains API
These endpoints allow you to return information about the domains connected to a particular HubSpot CMS site. You can return data for a list of domains or specify a domain by ID.
HubSpot Engagement Calls API
The calls endpoints allow you to log and manage call engagement records within HubSpot CRM. You can create call records, associate them with contacts and deals, retrieve call data, and manage call ...
HubSpot Engagement Emails API
The emails engagement API allows you to log and manage email activity records on CRM records in HubSpot. You can create email engagement records to track sent emails, associate them with contacts a...
HubSpot Engagement Meetings API
The meetings endpoints allow you to log and manage meeting engagement records in HubSpot CRM. You can create meeting records, associate them with contacts and companies, and retrieve meeting detail...
HubSpot Engagement Notes API
The notes endpoints allow you to create and manage note engagement records in HubSpot CRM. Notes can be associated with contacts, companies, deals, and tickets to capture important information and ...
HubSpot Engagement Tasks API
The tasks endpoints allow you to create and manage task engagement records in HubSpot CRM. Tasks represent to-do items that can be assigned to users and associated with contacts, companies, and dea...
HubSpot Marketing Email API
The marketing emails API allows you to programmatically create, update, and retrieve details about marketing emails in HubSpot. You can manage email campaigns, retrieve email performance statistics...
HubSpot OAuth API
The OAuth API allows you to manage OAuth access tokens for public applications. You can generate, refresh, retrieve metadata for, and delete OAuth tokens to provide secure, scoped API access for Hu...
HubSpot Posts API
Use these endpoints for interacting with Blog Posts, Blog Authors, and Blog Tags.
HubSpot Source Code API
Endpoints for interacting with files in the CMS Developer File System. These files include HTML templates, CSS, JS, modules, and other assets which are used to create CMS content.
HubSpot Tickets API
Tickets represent customer requests for help and are tracked through support pipelines until resolved. The tickets endpoints allow you to create, manage, and retrieve customer support ticket record...
HubSpot Webhooks API
The webhooks API allows you to subscribe to events occurring in a HubSpot account, receiving real-time notifications when CRM objects or conversations are created, updated, or deleted. You can conf...
Hubble API
The Hubble API is a gRPC-based observability API built on top of Cilium and eBPF that provides deep visibility into network flows, DNS queries, HTTP requests, and service communication within Kuber...
Hugging Face Dataset Viewer API
Query and visualize datasets stored on the Hugging Face Hub through a lightweight REST API.
Hugging Face Hub API
Programmatically interact with the Hugging Face Hub - manage models, datasets, and spaces.
Hugging Face Inference API
Run inference on 200,000+ machine learning models with a simple HTTP request.
Hugging Face Inference Endpoints API
Deploy and scale machine learning models with dedicated, secure infrastructure.
Hugging Face Inference Providers API
Unified proxy layer providing access to 15+ inference partners through a single OpenAI-compatible endpoint.
Hugging Face Text Generation Inference API
High-performance toolkit for deploying and serving large language models with optimized inference.
Humanitec Platform Orchestrator API
The Humanitec Platform Orchestrator API provides programmatic access to manage organizations, applications, environments, deployments, workloads, resources, integrations, pipelines, and other platf...
Hunter Account API
Returns information about the account associated with the API key.
Hunter Campaigns API
Allows you to manage email sequences including listing campaigns, managing recipients, and starting sequences for automated email outreach.
Hunter Combined Enrichment API
Merges person and company information for a single email address, returning enriched records combining both datasets.
Hunter Company Enrichment API
Returns detailed organizational data associated with a domain name, including company size, industry, location, and other firmographic information.
Hunter Discover API
Returns companies matching a set of criteria using natural language queries or robust filters to find companies aligned with your ideal customer profile.
Hunter Domain Search API
Returns all the email addresses found using a given domain name, with sources.
Hunter Email Count API
Returns the number of email addresses found for a given domain.
Hunter Email Enrichment API
Returns comprehensive personal information linked to an email address or LinkedIn profile, providing enriched data points about the person.
Hunter Email Finder API
Generates the most likely email address from a domain name, a first name and a last name.
Hunter Email Verifier API
Verifies the deliverability of a given email address.
Hunter Leads API
Allows you to manage the leads stored in Hunter, including listing, creating, updating, upserting, and deleting leads.
Hunter Leads Lists API
Allows you to manage leads lists in Hunter, including listing, creating, updating, and deleting lead collection groups.
Hunter Logo API
Retrieves any company logo using a domain name. Free to use with no authentication required, just a backlink from your site to hunter.io.
Huntington Bank Treasury Management API
The Huntington Bank Treasury Management API is part of Huntington's Treasury Management Connectivity Ecosystem, an API-first platform that enables businesses to unify banking, ERP, and financial to...
Huuray Gift Card API
The Huuray API enables B2B customers to offer global gift card purchasing and redemption services, providing access to a catalog of gift card brands across 170+ countries through a single integrati...
Hyperledger Besu API
Hyperledger Besu is an Ethereum client written in Java exposing JSON-RPC APIs for blockchain interaction including admin, debug, eth, net, web3, txpool, miner, and trace namespaces.