brain/wiki/ai-intelligence/index.md
The AI layer: which model backends a platform may use, how usage is metered, and the surfaces that consume them (the Agent step, the MCP server, the copilot). Glossary of the terms that only mean something here; each page below holds the detail.
A configured LLM backend (OpenAI, Anthropic, Google, Azure, OpenRouter, Cloudflare, Custom, or Activepieces-hosted) with encrypted credentials, resolved per platform.
The metered currency for AI usage — 1000 credits = $1 — backed by per-key OpenRouter limits. A quota, not a wallet.
A flow step that runs an autonomous LLM loop rather than a single call. Its AgentTools are Piece, Flow, MCP, or Knowledge Base handles.
The per-project endpoint that exposes Activepieces tools to an external AI assistant. Distinct from a piece that calls an MCP server.
Knowledge Base lives in Data, Storage & Observability — it is a document store first, an AI tool second.