# Mycelium docs > Technical documentation for Mycelium, the persistent memory substrate for AI agents inside operating enterprises. Architecture, runtime API, connectors, SDKs, security posture, self-host, and vertical packs. Companion to the marketing site at mycelium-ai.co. Mycelium ships in two layers: the open-source substrate ([ai-brain-starter](https://github.com/adelaidasofia/ai-brain-starter), MIT) and the productized commercial runtime (separate license). The substrate is a Markdown-readable, version-controlled memory store with skills as units of work, RESOLVER bi-temporal routing, deterministic hooks as guardrails, and write-back discipline as the feedback loop. The runtime adds multi-tenant JWT auth, per-tenant audit logs, webhook validation, SSE event streams, and Fortune-100-grade procurement artifacts. These docs document both layers; pages note which layer they apply to. ## Getting started - [Install](https://docs.mycelium-ai.co/getting-started/install): Three install paths for the open-source substrate — paste-prompt for Claude Code, plugin marketplace, manual git clone. - [Quickstart](https://docs.mycelium-ai.co/getting-started/quickstart): Five-minute ingest-and-query path against a single Slack channel, GitHub repo, or Notion database. ## Architecture - [Architecture overview](https://docs.mycelium-ai.co/architecture/overview): The five reliability pillars and the agent failure modes each one prevents (hallucination, silent failure, drift, regression, opacity). - [Typed memory](https://docs.mycelium-ai.co/architecture/typed-memory): How the queryable graph of decisions, exceptions, people, projects, and policies is backed by version-controlled Markdown. - [RESOLVER routing](https://docs.mycelium-ai.co/architecture/resolver): Bi-temporal lookup over the typed graph — what was true on a given date and how the substrate's view of that date evolved. - [Karpathy pattern](https://docs.mycelium-ai.co/architecture/karpathy-pattern): The central-Markdown-store + skills + write-back-discipline + compute-separation pattern the substrate implements. ## Connectors The substrate ships with six connectors today; the runtime adds enterprise connectors below. - [Connectors index](https://docs.mycelium-ai.co/connectors): Overview, status matrix, and write-pattern conventions across all sources. ### Communication - [Slack](https://docs.mycelium-ai.co/connectors/slack) - [Gmail](https://docs.mycelium-ai.co/connectors/gmail) - [Microsoft 365](https://docs.mycelium-ai.co/connectors/microsoft365) - [Google Workspace](https://docs.mycelium-ai.co/connectors/google-workspace) - [WhatsApp](https://docs.mycelium-ai.co/connectors/whatsapp) - [Zoom](https://docs.mycelium-ai.co/connectors/zoom) ### Engineering - [GitHub](https://docs.mycelium-ai.co/connectors/github) - [GitLab](https://docs.mycelium-ai.co/connectors/gitlab) - [Linear](https://docs.mycelium-ai.co/connectors/linear) - [Jira](https://docs.mycelium-ai.co/connectors/jira) - [Confluence](https://docs.mycelium-ai.co/connectors/confluence) ### Productivity - [Notion](https://docs.mycelium-ai.co/connectors/notion) - [Box](https://docs.mycelium-ai.co/connectors/box) - [Dropbox](https://docs.mycelium-ai.co/connectors/dropbox) ### CRM and sales - [Salesforce](https://docs.mycelium-ai.co/connectors/salesforce) - [HubSpot](https://docs.mycelium-ai.co/connectors/hubspot) ### HR and finance - [Workday](https://docs.mycelium-ai.co/connectors/workday) - [ADP](https://docs.mycelium-ai.co/connectors/adp) - [SAP](https://docs.mycelium-ai.co/connectors/sap) - [Oracle](https://docs.mycelium-ai.co/connectors/oracle) ### Data - [Snowflake](https://docs.mycelium-ai.co/connectors/snowflake) - [Databricks](https://docs.mycelium-ai.co/connectors/databricks) ### ITSM - [ServiceNow](https://docs.mycelium-ai.co/connectors/servicenow) ## Skills - [Skills index](https://docs.mycelium-ai.co/skills): Every skill shipped in the open-source substrate — daily-journal, meeting-todos, repurpose-talk, insights, ingest-*, and the rest. Each skill is a deterministic slash command with a SKILL.md spec and a reproducible side effect. ## Reliability and security - [Reliability manifesto](https://docs.mycelium-ai.co/reliability/manifesto): The five pillars framed for the security architect or platform-team lead evaluating whether the runtime can sit inside a regulated environment. - [Security posture](https://docs.mycelium-ai.co/security/posture): Tenant isolation, JWT bearer scoping, webhook signature schemes, audit and observability. Cross-references the marketing site's [Trust](https://www.mycelium-ai.co/trust) page for compliance certs and sub-processors. ## API reference - [Runtime API](https://docs.mycelium-ai.co/api-reference/runtime): FastAPI surface for the paid runtime. Tenants, ingest, retrieve, synthesis, webhooks, audit. JWT bearer auth on every route outside `/healthz`. Full OpenAPI document published with the runtime. ## SDKs - [Python SDK](https://docs.mycelium-ai.co/sdk/python) - [TypeScript SDK](https://docs.mycelium-ai.co/sdk/typescript) - [Java SDK](https://docs.mycelium-ai.co/sdk/java) - [Go SDK](https://docs.mycelium-ai.co/sdk/go) ## Self-host - [BYOC (bring your own compute)](https://docs.mycelium-ai.co/self-host/byoc): Customer-owned compute model. Cross-vendor LLM parity matrix; substrate runs against Claude, GPT, Gemini, Llama, or customer-owned weights. - [Air-gapped](https://docs.mycelium-ai.co/self-host/airgapped): Single-tenant deployment in disconnected environments. No outbound network requirement. ## Vertical packs - [Vertical packs index](https://docs.mycelium-ai.co/vertical-packs): Industry overlays on top of the substrate. Five packs ship today — legal, healthcare, finance, hospitality, professional services. Each pack ships industry schemas, hooks, and starter rules. ## Open source - [ai-brain-starter (GitHub)](https://github.com/adelaidasofia/ai-brain-starter): MIT open-source substrate. Vault structure, skills, hooks, scripts, install scaffolding. - [Substrate license (MIT)](https://github.com/adelaidasofia/ai-brain-starter/blob/main/LICENSE) ## Related sites - [Marketing site](https://www.mycelium-ai.co): Product positioning, pilots, comparison, pricing, trust posture. - [Trust page](https://www.mycelium-ai.co/trust): Compliance certifications, sub-processors, DPA, DPIA, HIPAA posture, vulnerability disclosure. ## Contact - Pilot inquiries: team@myceliumai.co - Vulnerability disclosure: security@myceliumai.co - Privacy and data-subject requests: privacy@myceliumai.co ## Optional These resources can be skipped in token-constrained agent contexts. - [Mintlify-rendered HTML at every doc URL above](https://docs.mycelium-ai.co): The live docs site. Every link above is also reachable as raw Markdown at `.md` (Mintlify convention). - [Connectors not yet shipped](https://docs.mycelium-ai.co/connectors): Salesforce, Microsoft 365, and Confluence are listed in the connectors index but ship after the current six (Slack, Gmail, GitHub, Linear, Notion, WhatsApp). Treat them as roadmap, not current capability.