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Helix Context Layer

The Open Context Layer That Makes Agents Useful

Generic AI agents answer generic questions. Helix, Nexla’s open context layer, grounds every agent interaction in your enterprise’s actual data: your schemas, your docs, your business logic, your history. Nexsets, Nexla’s data products, are part of Helix and fetch live data through 1,000+ connectors. The result is an agent that understands what your data means, not just what it says.

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The Problem

The Context Gap: The “C” In MCP

MCP stands for Model Context Protocol. The “C” is the hardest part to get right for enterprise AI.

Most MCP implementations deliver raw data to agents. The agent gets column names and values. It does not know that cust_id_v2 is the canonical customer identifier, that revenue figures are in thousands, or that the Q3 figures in the legacy ERP system are 90 days behind.

The Solution

Nexla’s Helix Context Layer.

Helix retrieves the right context and serves it to the agents: every MCP tool call passes through Helix before data reaches the agent. Behind that sits a Knowledge Graph and Vector Database holding enterprise-specific grounding from every connected system. The store is one part of the layer, not the whole of it, and the engine stays open to your team’s edits.

Animated diagram: a raw MCP tool call passes through the Helix context engine (Knowledge Graph and Vector Database) and emerges grounded and semantically tagged

Context Sources

What Feeds The Context Engine

Nexla’s Helix context layer ingests context from several source types:

Source Type	Examples
Business Files	Google Drive, SharePoint, Dropbox documents
Internal Docs	Wikis, user guides, READMEs, runbooks
Audio Recordings	Team calls, meetings, customer interviews
Video Assets	Schema definitions, lineage graphs, data tags
Metadata	Schema definitions, lineage graphs, data tags
Prior Executions	Agent run logs, pipeline results, query patterns
API / System Docs	OpenAPI specs, gRPC definitions, GraphQL schemas
Web Search	External knowledge, public reference data

All of this is indexed in Nexla’s Knowledge Graph and Vector Database, continuously updated as your systems and documentation change.

Context in Action

The Architecture

The Context Layer sits alongside the MCP Server & Gateway in Nexla’s data-for-agents pipeline:

MCP Server & Gateway

feeds enterprise execution context into the Knowledge Graph

The Knowledge Graph and Database

store and index all ingested context

The Helix Context Engine

provides per-enterprise grounding to every agent interaction

When an agent calls an MCP tool through Nexla, the Gateway routes the request through Helix before returning data. The agent receives not just the raw result, but the context needed to interpret it correctly.

Context Driven Intelligence

What Nexla Context Layer Delivers

Enterprise-specific Patterns

Helix identifies how your organization uses data — naming conventions, business logic embedded in fields, relationships between systems — and makes that knowledge available to agents at query time.

Data Interpretation Models

Rather than requiring agents to infer meaning from raw schema, Helix pre-computes interpretation models for each connected data source. Agents receive enriched, semantically tagged data.

Grounds Agents in Real Context

An agent with Helix context knows that rev_adj means adjusted revenue net of refunds, that the finance team's Snowflake schema is the source of truth, and that the legacy Oracle system uses fiscal quarter offsets.

Unique to Your Enterprise

Helix context is built from your systems and your documentation. It is not shared across customers. Every enterprise gets a context model that reflects its own data, terminology, and business logic. And it is open: your team can edit the context engine itself, or bring Nexla in as a technical partner to build a context layer that serves any agentic system you run.

Trusted AI Outcomes

Why This Matters For AI Agents

Without enterprise context, AI agents hallucinate interpretations, misread field names, and return answers that are technically correct but business-wrong.

With Nexla’s Context Layer, agents work from the same shared understanding of data that your best data engineers carry in their heads — encoded, indexed, and available at query time without manual prompt engineering. One engine, three consumers: Helix serves agents directly, powers the task-specific MCP servers MCP Studio builds, and gives enterprises an open engine to build their own context layer on.