Language model API
Language model APIs for text generation, summaries, translation and coding.
AI model APIs and agent hosting
Use a ready-made agent or build your own support assistant or troubleshooting tool. HarperHarbor provides model APIs and agent configuration hosting, with usage billed in credits.
Models and API services
Build and use agents, or integrate the services into your own application through the API.
Agent configuration hosting
Store and manage agent instructions, example conversations and response rules through the API for use in support, assistant or troubleshooting applications.
Use an agent or build your own
Use an agent
Choose an agent built by someone else in an app that supports HarperHarbor. Pay for usage with your own account’s credits. You do not need to create an API key.
View plans and pricing →Build an agent
Define instructions, knowledge and example conversations. Host and update the configuration for yourself or others to use. Developers can also integrate it into their own apps through the API.
Read the agent building guide →Pay for what you use
Choose a model and pay for actual usage with credits.
Rates vary by model
Choose a model for your task. Check its input and output rates before making a request.
Charges follow usage
Your selected model and actual usage determine the cost, deducted from your credits balance.
Buy credits as needed
No subscription required. Plans start at US$5 for 30,000 credits.
Frequently asked questions
What does an agent configuration contain?
Store instructions, example conversations, response rules and Lorebook knowledge entries for your application to read through the API.
Do I need to code to use an agent?
No. Choose an agent in an app that supports HarperHarbor and authorize access with your account. You need an API key only when integrating the API yourself.
How is API usage billed?
Credits are deducted based on the selected model’s rates and actual usage. View usage, charges and your remaining balance in the console.
Start with what you need
Use a ready-made agent or build your own. Manage your account, credits and usage in the personal console.