Best Claude Code MCP servers

MetaHarness integration plugin for ruflo. Surfaces the upstream `metaharness` / `harness` / `@metaharness/darwin` CLIs through eleven ruflo skills, honoring ADR-150's architectural constraint that MetaHarness must remain a removable augmentation — never a required runtime dependency.

Dynamic Agentic Architecture — 8 daa_* MCP tools for adaptive agents (create/adapt), cognitive patterns, workflows (create/execute), knowledge sharing, and learning/performance metrics. Feeds the JUDGE phase of the 4-step intelligence pipeline.

Cache-aware /loop workers and CronCreate background automation. Substrate plugin for every recurring task in the ruflo family.

AI music generation via Cognitum Music (cogmusic MCP) — compose lyrics/prompts, generate tracks, separate stems, extract MIDI, and master through your own music.cognitum.one account. As a mod (ADR-445): a tighten-only guard on its tools, /music-mod, and a status file the console shows

AI safety scanning, PII detection, prompt injection defense, and adaptive threat learning.

Neural trading strategies powered by neural-trader (v2.7+): self-learning LSTM/Transformer/N-BEATS models, Rust/NAPI backtesting, 112+ MCP tools, swarm coordination, and portfolio optimization.

Claude Code plugin that compresses tool output, checkpoints before compaction, scores context quality, and reports token/cost savings on a local dashboard; ships hooks and a localhost daemon.

Substrate plugin for Ruflo memory: AgentDB controller bridge (15 agentdb_* MCP tools), RuVector ONNX embeddings (10 embeddings_* tools incl. RaBitQ 32x quantization), and WASM HNSW pattern router (3 ruvllm_hnsw_* tools). As a mod (ADR-445): opt-in safe recall into the prompt, a write guard that keeps secrets out of memory, /agentdb, and a status file the console shows

Template directory for a Ruflo plugin mod under ruvnet/ruflo, presented alongside the broader Ruflo agent meta-harness for Claude Code.

The security default for organizations. Function hooks give every plugin a say on every event, in chain order, and the plugins a person installs sit in the user tier, beneath the organization's prepend tier and above its append tier. Some of what an organization sets today (its classic hooks, its managed CLAUDE.md and rules, its settings, its MCP allowlist, the deny rules in force on its machines) was never within a person's reach before function hooks; seated outermost, this plugin keeps exactly those out of the user tier's reach and adds no policy of its own. Everything else passes through untouched.

Autonomous /loop-driven task completion plugin for Claude Code with learning, prediction, progress tracking, and 10 autopilot_* MCP tools.

Session-as-skill browser automation plugin for Claude Code: Playwright-backed MCP tools, RVF cognitive containers, AgentDB selector/cookie memory, AIDefence gates, plus a tighten-only tool guard mod.