new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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AI SDK · Providers · all subjects

letta/capabilities

3 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

Letta capabilities

Letta provider features include persistent and long-term memory, access to both agent-level and model-level reasoning messages with source attribution, support for custom agent-configured tools and MCP (Model Context Protocol), agent-managed filesystem operations with tool-based file access, built-in utilities to convert between Letta and AI SDK message formats, and every Letta Send Message API feature including long-running agent executions.

Letta custom tools and MCP support

Letta agents support custom tools and MCP (Model Context Protocol) servers through provider-executed tools. After configuring tools on your Letta agent, include them in requests using lettaCloud.tool() or lettaLocal.tool(), and Letta handles tool execution. You can optionally provide description and schema using Zod, but execution is handled by Letta.

Letta accessing client functions

The vercel-ai-sdk-provider extends @letta-ai/letta-client. Access client operations directly using lettaCloud.client, lettaLocal.client, or a custom generated letta.client instance. For example: lettaCloud.client.agents.list();

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