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Free Ai Agent Stack

DevAnimecx

Every free LLM API, MCP server, agent framework and free-tier service you need to build an AI agent in 2026. 384 resources, human-verified, no credit card required for 222, links checked daily. Build

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Mnesio

mnesio

Self-improving long-term memory for AI agents in Rust. Safety-gated procedural learning, MCP server, Python/Node SDKs, and durable memory.

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LexCompiler

shahriar-ahmed-seam

Neuro-Symbolic Law-to-AST Compiler, Microsoft Z3 Formal Verifier, 12-MCP Suite, Contextual+Graph RAG, and Autonomous PR Enforcer (JusticeSphere AI / ComplianceOS)

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Mynd

oxHive

Persistent memory MCP server for AI coding agents. Injects project context at session start, stores architectural decisions, and recalls preferences works with Claude Code, Cursor, Windsurf, OpenCode,

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Ckg

phins-group

Local-first Code Knowledge Graph and MCP retrieval engine for AI coding agents. Built with Rust, SQLite, and Tree-sitter. No database server required.

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Nlqdb — Analytical Memory For AI Agents

ทางการ

com.nlqdb

Analytical memory for AI agents: a real Postgres queried in plain English over MCP. One command.

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Banhmi

dannyota

Evidence-only RAG + MCP server for Vietnamese banking & fintech regulation — exact Điều/Khoản citations, validity status, and official government source links for your own AI. No hallucination.

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Logseq

eborden

Read-only MCP server that lets Claude search and read your LogSeq graph: page context, link traversal and journals by date. Batched Datalog keeps a question to a handful of calls. Native Rust binary,

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Aitherflow Knowledge

aitherlab-dev

MCP server for RAG knowledge base search — local embeddings (fastembed/ONNX) + vector search (LanceDB)

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Culi

hung12ct

Self-improving context & memory for Claude Code and OpenAI Codex. One canonical knowledge store injected only when relevant — hooks push budgeted context, an MCP server serves depth on demand, and it

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Mnemex

FCHEHIDI

My personal AI memory layer — vector store + session consolidation + MCP server wired to GitHub Copilot.

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Server Noonien

ทางการ

io.github.sequico

Shared, serverless, conflict-free knowledge-graph memory for AI agents

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Vault Echo

Ibarra25

Your Ultimate Local AI Memory Hub 2026 – Eliminate AI Amnesia Today

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Hyphae

basidiocarp

Persistent memory and RAG for AI coding agents. Episodic memories with decay + durable concept graphs. MCP server + CLI. Rust.

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MCP Kb

eumel8

Model Context Protocol Server with RAG knowledge base

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Gdocumentor

tanaikech

Socratic AI Writing & Code Review Coach + 0-Token Google Docs Editor (Go CLI, Zero-GEMINI_API_KEY Host-AI MCP Server & 7-Client Skill Installer with WSL2<->Windows Bridge). Applies UTF-16 inline sugge

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MemVault

dreamor

MemVault — The Shared Memory Layer for Every AI Agent You Run. Self-hosted, open-source MCP memory server with auto-injection, hybrid (BM25+vector) search, and zero-config sync — works with Codex, Cla

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Gcal Cli

WireCatLabs

Google Calendar CLI for humans and AI agents

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Nqlite

nqlite

A context-first, deterministic, single-file database for AI agents — SQLite for AI memory. Records, typed graph relations, BYO embeddings, and time under one ACID transaction. No-LLM by contract: hybr

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Nexus Agent

raykavin

Multi-provider LLM agent backend with RAG, Python toolpacks, SSE streaming and MCP server. Supports OpenAI, OpenRouter and Ollama with per-session routing, tool-calling loop and OpenTelemetry observab

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MCP Reasoning

quanticsoul4772

Rust MCP server with 35 tools for structured reasoning, self-improvement, semantic session memory, and agent/team coordination powered by the Anthropic Claude API

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Seraph Memory

Tree-D-Interactive-LLC

Standalone MCP server giving AI assistants persistent, self-organizing memory over the SERAPH geometric knowledge engine (C ABI, no Python).

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Rocky

poggufanz

A local CLI that remembers failed commands and what fixed them, asks your coding agent why before it edits, and keeps you able to explain your own code.

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Reftrixmcp

ทางการ

io.github.TKMD

Web design analysis with 26 MCP tools: layout, motion, quality, semantic search via pgvector

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Memory

0x0177b11f

Memory MCP server for persistent context storage and retrieval with PostgreSQL and pgvector.

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The Project Who

tilkiii

Cognitive digital twins and behavioral modeling for AI agents.

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Anamnesis

hyperpolymath

Conversation knowledge extraction and reconciliation for multi-LLM development workflows

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Innate

vima-tech

Self-growing procedural knowledge layer for AI agents. Rust MCP server + CLI — recall relevant knowledge before tasks, record outcomes after, distill experience into reusable insights. Works with Clau

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Nexus Mind

smart-coder-labs

Open-source, self-hosted team memory for AI coding agents. Share, search, and audit project context through MCP.

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Cortex

swiftj

A local-first MCP memory server for Claude Code with hybrid vector + lexical search

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Aikd

gelutjari

Indexed semantic & BM25 code search for AI agents. Give your AI instant memory of your codebase. Rust | MCP Server.

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StrataKB

boudou

Layered, self-learning knowledge base for teams, served over the Model Context Protocol. PostgreSQL + pgvector hybrid search, roles, audit log, YAML layer presets.

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MCP.chroma

undervolting

a mcp server for interacting with ChromaDB

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Rusty

CaliLuke

A minimal Rust vector-memory server that works with Qdrant and Ollama.

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Spring Ai Engineering

ayushstwt

A practical repository focused on mastering Spring AI concepts through hands-on implementations including RAG pipelines, vector search, AI agents, tool calling, memory handling, MCP servers, embedding

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Psyxe

bjenkinsgit

Apple ecosystem MCP server for Claude Code, Cursor, and other AI assistants — Notes, Reminders, Contacts with BERT semantic search