Myco: Agent First Cognitive Substrate
Run long-lived agents on a self-validating markdown-and-YAML cognitive graph with 20 MCP verbs and mechanical lint gates.
Overview
Myco MCP is a MCP server for the Build phase that provides a self-validating cognitive substrate with 20 verbs and 50 lint dimensions for long-running coding agents.
What is this MCP server?
- 20 verbs on the MCP surface (documented from v0.6.0+ showcases)
- 50 lint dimensions for self-validating structure across 7 subsystems
- Plain markdown plus YAML on disk; knowledge read via MCP resources not vector RAG
- R1–R7 hard contract governance; stance explicitly anti-vector versus mem0-style memory
- 20 MCP verbs on the documented surface
- 50 lint dimensions across 7 subsystems
- Knowledge stored as plain markdown and YAML on disk
Community signal: 63 GitHub stars.
What problem does it solve?
Long-running agents lose structural coherence when memory is fuzzy retrieval instead of governed, inspectable knowledge on disk.
Who is it for?
Advanced solo builders designing durable agent runtimes who reject vector-only memory and want file-native governance.
Skip if: Builders who need simple embedding memory, RAG over PDFs, or zero local doctrine maintenance.
What do I get? / Deliverables
Agents operate on a lint-checked markdown graph with a fixed verb contract so doctrine and project state stay mechanically consistent.
- Twenty-verb MCP tool surface for governed agent operations
- Lint-checked knowledge graph across seven architectural subsystems
- File-native context accessible via MCP resources without embedding pipelines
Recommended MCP Servers
Journey fit
How it compares
Cognitive substrate MCP with lint contract, not a vector memory plugin or generic notes MCP.
Common Questions / FAQ
Who is Myco MCP for?
Developers shipping long-horizon LLM agents who want markdown-on-disk knowledge with mechanical validation instead of embedding stores.
When should I use Myco MCP?
Use it when building or operating agent systems that must enforce doctrine, pass lint dimensions, and expose a stable twenty-verb MCP API.
How do I add Myco MCP to my agent?
Follow the Myco repository install path for the MCP server, wire stdio or documented transport, and lay out knowledge as markdown and YAML the resources layer can read.