AI Agent
A software system that uses an AI model to decide or coordinate actions toward a goal.
Open definition →Knowledge base
The IndieFounder Glossary.
Plain-English definitions for founders, developers, and AI builders.
MCP
Model Context Protocol is an open protocol for connecting AI applications to external tools and data sources.
Open definition →RAG
Retrieval-augmented generation combines a model with retrieved external information to improve grounded answers.
Open definition →MRR
Monthly recurring revenue is the recurring subscription revenue a business expects in a month.
Open definition →ARR
Annual recurring revenue is normalized recurring subscription revenue over one year.
Open definition →CAC
Customer acquisition cost is the average cost required to acquire one new customer.
Open definition →LTV
Customer lifetime value estimates the revenue or gross profit a customer generates over the relationship.
Open definition →Churn
The rate at which customers or recurring revenue are lost during a period.
Open definition →ARPU
Average revenue per user measures average revenue generated per user over a defined period.
Open definition →Runway
The amount of time a startup can operate before running out of cash at its current burn rate.
Open definition →Burn Rate
The rate at which a company consumes cash, usually measured monthly.
Open definition →Context Window
The amount of information an AI model can process within one interaction.
Open definition →Inference
The process of running a trained AI model to produce an output from an input.
Open definition →Vector Database
A database optimized for storing and retrieving numerical vector representations of information.
Open definition →MVP
The smallest useful version of a product that can test a real customer assumption.
Open definition →PMF
Product-market fit describes strong evidence that a product solves a meaningful problem for a defined market.
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