Documents, knowledge, agent memory, beliefs, named entities, conversation history. Hybrid search — vector plus full-text plus structured filters — across everything you've ever owned. Every reference is a typed link. Every retrieval is auditable.
Vector embeddings plus full-text inverted indexes plus structured filters in a single query. Semantic re-ranking by relevance, recency, ownership, and confidence. Cross-domain: a query against a contract surfaces the customer, the engineer who reviewed it, and the related ledger entries.
Episodic memory that survives sessions. Beliefs as first-class objects: heuristics, red-line constraints, learned patterns. Per-agent isolation enforced cryptographically. Each AI executive remembers its own prior reasoning without leaking into another's working state.
Documents are nodes. References are typed edges. A specification cross-links to its decisions, its open questions, the engineers who reviewed it, the contracts it produces. The knowledge graph compounds with every new document. Ten thousand documents become a thousand thousand connections.
The contracts live across three systems — a contract management tool, a shared drive, and PDFs in someone's email. The MFN language varies. The renewal dates are in different field names. Building this query takes a paralegal three days.
Meridian answers in seconds. Documents are normalized into the knowledge graph as they arrive. Clause types are extracted as typed properties. Renewal dates are first-class fields. The query runs across vector similarity (for semantic clause matching) and structured filters (for the date range) at once. The result includes the source documents, the contracts they relate to, and the customers attached.
Discovery requests like this are operationally painful. Email lives in inboxes. Customer references are unstructured text. The traditional answer is hiring an external e-discovery vendor, exporting your mail server, and waiting weeks.
Meridian's communication layer ingests email into the same substrate as your knowledge graph. Customer references are resolved against the entity registry as messages arrive — every "Acme Corp" in every email is the same entity. The discovery query runs in minutes. The output is a signed evidence packet. Chain-of-custody is automatic because the substrate recorded everything.
The decision is somewhere — a Slack thread, a Notion doc, an email, a meeting note, a JIRA ticket. Six months later, the answer is "we should look that up" and never gets looked up.
Meridian retrieves the conversation, the decision, the reasoning trail, the people involved, and the context that informed it. The decision is a first-class object linked to the documents that produced it. "Why did we decide X" returns a structured answer with citations. Institutional memory becomes a query.
Most AI systems treat memory as a per-conversation buffer. The agent forgets when the session ends. Knowledge bases live in vector stores that the agent retrieves from but cannot reason about. The CRM has its own database. The accounting system has another. Every system holds its own slice of reality, and the AI sees a fragmented view.
Meridian has one knowledge substrate. Every document, every memory, every belief, every entity, every conversation lives in the same graph. Every AI executive reads from it and writes to it under their own cryptographically-isolated scope. The CFO and the CISO share the same source of truth — but they reason from different perspectives, with different memories, and what they share is the underlying record.
This is what makes the executives' continuous awareness possible. The CFO that watched Q3 close last quarter remembers what they learned. The CISO that responded to last month's CVE has the playbook indexed. The institutional knowledge of your company compounds across every conversation, every decision, every artifact.
"You came here for an enterprise search. By the time you go to production, you'll discover the same substrate also runs your contract intelligence, your compliance evidence, your incident postmortems, and your strategic memory."
Seven other domains running on the same substrate
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