Memory & Knowledge MCP Servers for Codex CLI

Arca is a private data vault where your AI stores your structured data, semantic memory and skills.

Private projects, preflight, decisions, and handoffs that keep work continuous across AI tools.

AI memory layer for fractional CMOs -- client-partitioned minds, meeting prep, and EOS.

Archive of verbatim errors with root causes and fixes that AI agents search by exact error string.

Persistent memory for AI agents — semantic + recency search, ONNX embeddings, Docker Compose.

Local grounded memory for coding agents: MCP over stdio, stdlib only, a verdict per answer

Open-source LLM knowledge base: team chat into a typed knowledge graph and auto-generated wiki.

Cognitive architecture MCP server with memory, learning, and contextual understanding

Persistent semantic memory storage, associative recall, and recent memory index by namespace.

Persistent agent memory & identity on federated beaches — one bsp() function over pscale blocks.

Local-first engineering cognition for AI coding agents — persistent memory over your codebase.

Git-native decision memory for coding agents: only the decisions still in force for the edited path

CompanyGraph: Written once, read by both

Cloudflare Worker remote backend for context-keeper (D1). MCP 2026-07-28, dual-era.

Search, browse and read your Contextli voice notes and transcriptions from any MCP client.

A project's long-term memory as plain Markdown files, with an append-only, tamper-evident log.

System-of-record notebook for AI coding agents: pages, datastores, tasks, skills over MCP.

Agent memory engine — 102 MCP tools, self-hosted, single Rust binary

Intelligent context infrastructure for AI teams: knowledge graph, sessions, tasks, documents.

On-chain identity and durable memory for AI agents on the Emercoin blockchain (NVS).

Long-term memory for AI agents: durable records, observable retrieval, governed context assembly.