FIG. 1 - CONTENT HUB Pillar one / memory vocabulary
Answer-first guides

Agent memory, explained for builders.

Start here for the vocabulary behind production agent memory: inspectable recall, supersession-aware facts, provable forgetting, and the difference between context, RAG, and durable memory.

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Pillar guides

These pages are written as durable references, not campaign blurbs. Each one is fully visible in server-rendered HTML and links to its source material.

C2 / C23

Add Persistent Memory to Codex (MCP)

Configure Codex with Answer Engine memory through MCP so the coding agent can retrieve source-linked project facts instead of starting cold.

C3 / C14

Add persistent memory to Cursor (MCP)

Paste a Cursor .cursor/mcp.json config that runs npx answer-engine-mcp, points at engine.answeragent.ai, and gives Cursor scoped persistent memory.

C4 / C23

Add Persistent Memory to Gemini CLI (MCP)

Configure Gemini CLI with Answer Engine memory through MCP so terminal-first coding workflows can retrieve source-linked project facts.

C5 / C23

Add Persistent Memory to Windsurf (MCP)

Configure Windsurf Cascade with Answer Engine memory through MCP so project facts and prior decisions survive across coding sessions.

C8 / C1

Agent Memory: The Complete Guide

A practical guide to agent memory: what it is, how it differs from context windows and RAG, and how to evaluate memory for production AI agents.

C9 / C27

Mem0 vs Zep vs Letta vs Cognee vs Answer Engine

A five-way agent memory comparison using inspectability, supersession, forgetting, portability, source breadth, and tenant isolation.

C11 / C25

Answer Engine vs Mem0

Compare Answer Engine and Mem0 for teams choosing between a hosted memory API and an inspectable MCP memory layer.

C12 / C26

Answer Engine vs Zep

Compare Answer Engine and Zep for teams deciding between temporal graph memory and inspectable multi-source agent memory.

C13 / C28

Best Agent Memory Framework (2026)

A practical 2026 shortlist for agent memory systems, with best-fit verdicts for Answer Engine, Mem0, Zep, Letta, and Cognee.

C14 / C16

Best MCP Memory Server (2026): Honest Comparison

Compare MCP memory servers by inspectability, forgetting, portability, permission-aware retrieval, and public evidence without guessing hidden scores.

C16 / C22

CLAUDE.md is Not Memory

CLAUDE.md and other static context files are useful boot instructions, but they do not replace durable, source-aware, inspectable agent memory.

C18 / C17

Connect Confluence to Your AI Agent via MCP

Connect Confluence pages to an AI agent through Answer Engine memory and MCP, using the real Confluence document adapter and engine.answeragent.ai config.

C20 / C18

Connect Jira to Your AI Agent via MCP

Connect Jira issues to an AI agent through Answer Engine ticket memory and MCP, using the real Jira ticket adapter and engine.answeragent.ai config.

C21 / C8

Context Engineering vs Memory

Context engineering decides what an agent sees right now. Agent memory decides what survives later. Production systems need both.

C22 / C9

Context Rot: Why Agents Degrade Below the Token Limit

Context rot happens when a long prompt is technically within the token window but the useful signal is diluted by stale, conflicting, or irrelevant context.

C23 / C38

How to Delete or Forget a Specific Memory in an Agent

Delete a specific agent memory by targeting the source artifact, derived artifacts, retrieval paths, and audit record instead of relying on prompt instructions.

C24 / C30

How to Evaluate RAG and Agent-Memory Accuracy

Build a golden set over your own data, inspect retrieval evidence, and score agent memory without relying on borrowed benchmark numbers.

C27 / C29

Letta Alternatives for Agent Memory

Compare Letta alternatives for teams choosing between stateful agent runtimes and source-aware memory layers.

C28 / C29

Mem0 Alternatives for Agent Memory

Compare Mem0 alternatives for teams that need inspectable source memory, temporal graph memory, stateful agents, or self-operated graph/vector stacks.

C29 / C12

Memory Needs a Write Path, Not Just a Retriever

A retriever can find documents, but agent memory needs a write path that decides what to remember, how to scope it, and how to inspect or forget it later.

C30 / C7

Memory is not RAG is not Fine-Tuning

Agent memory, RAG, and fine-tuning solve different problems: persistence, retrieval, and model behavior. Use this guide to choose the right layer.

C33 / C6

Portable Agent Memory: Avoid Memory Lock-In

Portable agent memory keeps remembered facts outside one agent client so teams can move memory across Claude Code, Cursor, Codex, Gemini CLI, Windsurf, APIs, and future tools.

C34 / C4

Provable Forgetting: Can You Prove Your Agent Forgot?

Provable forgetting is the ability to show which memory, source artifact, embedding, and derived summary were removed or disabled after a deletion request.

C35 / C43

My RAG Leaks Docs to the Wrong Users

RAG leaks happen when retrieval ignores tenant, library, visibility, or user ACLs before candidate documents enter the model context.

C37 / C24

REST vs MCP vs CLI for Agent Memory

Choose REST, MCP, or CLI for agent memory based on who calls memory, where auth lives, and whether humans need terminal-native workflows.

C40 / C10

The Types of Agent Memory

A practical taxonomy of agent memory types: working, short-term, long-term, episodic, semantic, procedural, source, and retrieval memory.

C41 / C41

Vector Search Returns Noise or Fabricated Sources

Noisy vector search and fabricated citations come from weak candidates, missing source verification, citation generation, and retrieval traces users cannot inspect.

C42 / C31 / COST

What Does Agent Memory Actually Cost?

Compare agent-memory spend in dollars per 1,000 queries against context-stuffing input-token cost, with a calculator and no fabricated savings claim.

C43 / C15

What is an MCP Memory Server?

An MCP memory server exposes durable memory tools to AI agent clients so they can search, retrieve, write, inspect, and scope remembered facts.

C44 / C5

Why AI Agents Forget and How to Fix It

AI agents forget because model calls are bounded, context is temporary, and most products lack a durable write path with source-aware recall.

C45 / C29

Zep Alternatives for Agent Memory

Compare Zep alternatives when temporal graph memory is not the only requirement for your agent memory layer.