Less tokens.
Better code. Instantly.
Harmony pre-indexes your codebase with Hyper Converged Contextual Indexingso Claude Code, Cursor and Windsurf get instant, agent-aware context in ~100 milliseconds — the most token savings of any MCP memory server.
Install first, sign up later. No UI, no repo connection, no credit card — your agent registers you automatically.
Trusted by the world’s most innovative enterprises
Same task. A fraction of the tokens.
Without memory, your agent crawls the filesystem over and over. With Harmony, it asks once.
# resolving context… list files → read → decide read more → re-read → decide grep → read → decide ↻ ~14 round-trips
# resolving context… harmony.context(prompt) ↳ context bundle ready ✓ ~100ms · 0 extra trips
The definitive MCP memory layer for AI coding agents.
Every design decision in Harmony exists to make your coding agent faster, more accurate, and dramatically cheaper to run. These are the features that get you there.
Hyper Converged Contextual Indexing
HCCI is Harmony’s indexing engine. It converges symbol resolution, semantic similarity, call-graph traversal, import trees and recent diffs into one unified index, then runs multiple re-ranking passes so every bundle is the most complete, accurate and compact possible.
Token Budgeting
Set a precise token ceiling per request. Harmony packs the highest-relevance context that fits and never goes over, eliminating the silent overspend of naive retrieval. The difference between a $20 plan and a $200 one.
Landmark Expansion
When a query needs more, your agent (or Harmony itself) signals for it. The system expands outward from key landmarks in your codebase graph: related types, callers, callees and dependent modules, until the context is genuinely complete. No manual file-picking.
Agent & model aware
Harmony detects which agent and model is asking and formats the bundle for it automatically. Claude Opus gets a different presentation than GPT-4o or Gemini; Cursor differs from Claude Code. The right format, every time.
XML + Markdown, not JSON
Most servers serialize context as JSON, built for machines, not models. Harmony returns model-optimized XML + Markdown, which LLMs parse with higher accuracy and less confusion. Fewer tokens decoding structure, more tokens writing code.
Private by default
Your index lives on your machine. Source never leaves your environment without explicit opt-in. Enterprise supports air-gapped, self-hosted deployments on AWS, Azure or DigitalOcean with SSO, SCIM and audit logs.
Context that reasons, retrieves, and remembers.
Most MCP servers do a single keyword pass and call it context. Harmony runs Hyper Converged Contextual Indexing with multiple re-ranking passes to guarantee the most relevant bundle — faster than a blink.
Index with HCCI
One command triggers Hyper Converged Contextual Indexing. Harmony maps symbols, types, exports, call graphs and recent diffs into a live semantic graph. Incremental updates run silently in the background.
Connect via standard MCP
Point Claude Code, Cursor, Windsurf or any MCP agent at Harmony with a single config line. Spec-compliant and OAuth-secured for team workspaces.
Multiple re-ranking passes
Vector, text, RAG and graph RAG run at once and get re-ranked in a single memory space, so you get the most relevant bundle even on ambiguous, cross-file queries.
Agent-aware context in ~100ms
The bundle comes back formatted for your specific agent and model, within your token budget, as XML + Markdown rather than JSON. Fewer tokens, less waiting, a more accurate result.
Benchmarks built for real developer workflows.
We measure retrieval speed, token efficiency, and context accuracy across real codebases — not synthetic demos. All results compared against agents operating without a memory layer, re-reading files each session.
Internal benchmarks on a large production TypeScript monorepo, warm cache, median session. Full methodology coming soon.
One line to install. Zero config to start.
Add Harmony to your agent and it registers you automatically — verify your email whenever you like. Here’s the whole setup.
# install into your current workspace$ npx @codeconductor/harmony install# that's it — your agent does the rest
Strongest on the languages teams actually ship.
Harmony supports every major language, with the deepest support where it matters most for production teams.
First-class
Java (our strongest, enterprise-focused), Node.js, Python and C#.
Supported
Rust and Go — fully usable, with support that keeps deepening.
Also covered
PHP and other major languages. New workspace and deploy features land first for Java, Node.js and C#.
Memory without the heavyweight platform.
Enterprise code-intelligence tools can run $16,000+ a month and require you to wire up your whole platform first. Harmony works straight out of any coding workspace.
| Harmony | Heavyweight code-intel platforms | |
|---|---|---|
| Setup | ~30 sec from a cold start | Connect repos + configure platform |
| Requires Git repo connection | No — just point it at source files | Yes |
| Works from any workspace | Yes, even a local machine | Limited |
| Delivery | A simple MCP install | Full platform purchase |
| Time to first value | Minutes | Weeks of onboarding |
| Entry price | Free to start | $16,000+/mo base |
Trusted by teams already building with AI agents.
Harmony compressed what would have been months of context-setup work into a single afternoon. Our Claude Code sessions now start with full repo awareness from the first prompt — no warm-up, no repeated file reads. The token savings alone paid for the switch.
We built our entire AI coding workflow on MCP-connected agents. Harmony was the missing piece — it gave our agents the codebase memory they needed to stop re-discovering the same modules on every task. Landmark Expansion is a game-changer for our monorepo.
Token waste was quietly eating our Claude API budget. After installing Harmony, Cursor sessions are dramatically faster and we have seen a measurable drop in redundant API calls. The XML + Markdown format makes a real difference — our agent actually understands the context it receives.
Client data sourced from CodeConductor Customer Stories →
Start free. Pay only when it’s earning you money.
Serving you costs us pennies, so we’ll never switch the product off. Use it for fun for next to nothing — pay when you’re building commercially.
Free
Try it for 30 days. The fastest way to feel the difference.
- Full memory engine
- Any MCP coding agent
- 1 workspace included
Hobby
For personal and non-commercial projects.
- Everything in Free
- For non-commercial use
- Keep it running, always
Commercial
For developers building real products.
- Everything in Hobby
- Commercial license
- Priority memory serving
Enterprise
Team management, invoicing and added compute.
- Aria agent + memory
- Self-host on AWS / Azure / DO
- SOC 2 (in progress) · SSO
Install from wherever you already work.
Harmony is a standard MCP, so it shows up across the whole ecosystem — registries, code editors and infrastructure marketplaces. One install, your agent does the rest.
Code editors & agents
One-click in Cursor, the MCP gallery in VS Code, and a Claude Code plugin. Works with ChatGPT apps and any other MCP-enabled agent.
MCP registries
Listed on the Official MCP Registry and discovery directories — Smithery, Glama and PulseMCP — so agents and developers can find us instantly.
Infra marketplaces
Docker MCP Catalog for containerized installs, plus AWS, Azure and DigitalOcean for self-hosted enterprise deployments.
Questions teams ask us.
Everything you need to know about Harmony before your first install.