Case Studies | SaaS B2B

Internal knowledge, inside the IDE

Bedrock Knowledge Base with MCP

About

A SaaS B2B business working with Cloud Combinator on AWS. The client is anonymised at their request.

Challenge

The challenge had four focus areas.

Knowledge the coding agent cannot reach

The client's developers use IDE-based assistants, but those assistants cannot see the company's internal process knowledge. The goal was retrieval-augmented assistance in the developer's own workflow, without copying documents around by hand.

Keeping the knowledge base current

A knowledge base that goes stale is quickly ignored. The client needed ingestion to be event-driven, so that adding or removing a document in storage updates the knowledge base automatically, with no manual sync step.

Bridging agents to the knowledge base

Coding agents speak the Model Context Protocol, so something had to translate between that protocol and the Bedrock knowledge base. Standing up a MCP server that coding agents could call on demand was central to the design.

Auditability and control

Because the assistant would draw on internal knowledge, the client needed traceability over what was asked and answered, along with guardrails on the model's responses.

Solution

The engagement was delivered as an infrastructure-as-code proof of concept, built to a secure development standard in the client's own AWS environment and structured around clear milestones.

In-IDE

Internal knowledge delivered inside developers' coding agents via MCP

Auto-sync

Event-driven ingestion from Amazon S3, no manual refresh

Full audit

Every invocation tracked in Amazon DynamoDB

By the numbers:

  • In-IDE - Internal knowledge delivered inside developers' coding agents via MCP
  • Auto-sync - Event-driven ingestion from Amazon S3, no manual refresh
  • Full audit - Every invocation tracked in Amazon DynamoDB
Changes

Acceptance is defined against a working, maintainable system: the API queries the knowledge base and returns answers, ingestion syncs automatically, the MCP server lets a coding agent enrich its context on demand, and the client's team can run it themselves. The items below reflect the deliverables and design set out in the Statement of Work.

  • Knowledge where developers workCoding agents can pull grounded answers from the client's internal knowledge base on demand, without leaving the IDE.
  • Always currentEvent-driven ingestion keeps the knowledge base in step with its Amazon S3 source automatically, so answers reflect the latest documents.
  • Guardrailed and groundedAmazon Bedrock guardrails and prompt engineering keep responses safe and relevant, drawing on the client's own content.
  • Traceable by designInvocations are logged to DynamoDB, giving the client's auditability over what the assistant is asked and what it returns.
  • HandoverThe proof of concept closes with a runbook, a reference architecture, a knowledge-transfer session and sign-off that the client can maintain and iterate on the system themselves.

With internal knowledge now reachable from inside their coding agents and a foundation they can operate themselves, the client leaves the proof of concept with a repeatable pattern for AI-assisted development, ready to broaden the knowledge base and roll the experience out more widely across their engineering team.

AWS Stack

Amazon Bedrock

For the knowledge base, guardrails and retrieval-augmented responses.

Amazon S3

For storing the documents that form the knowledge base data source, with event-driven ingestion.

AWS App Runner

With Amazon ECR for hosting the MCP server that bridges coding agents to the knowledge base.

Amazon DynamoDB

For tracking invocations, supporting auditability and traceability.

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