ZECH
AI Development · Interact

Answers from your own knowledge, with the source for every claim.

Retrieval-augmented generation (RAG) means the AI looks up relevant passages from your documents first, then writes its answer using only what it found — and shows you where each part came from. We build these systems with permission-aware search, fresh content and measured answer quality.

What we deliver
  • Source inventory and access map
  • Ingestion and indexing pipeline
  • Retrieval layer
  • Answer generation with citations
  • Evaluation and feedback
Tools & platforms
Postgres with pgvectorElasticsearch or OpenSearchEmbedding and re-ranking modelsAnthropic, OpenAI and open-weight modelsPython

Where this helps

Knowledge is scattered and hard to find
Policies, product specs, past tickets and procedures sit across wikis, shared drives and inboxes. People ask colleagues instead, and the same questions get answered again and again.
A general chatbot does not know your business
A public AI model gives confident, generic answers that ignore your policies and products — or invents details that sound right.
Search returns documents, not answers
Existing enterprise search finds a dozen files that might be relevant, and the reader still has to open each one to find the paragraph that matters.

What we deliver

01
Source inventory and access map
Which repositories are included, who owns them, how often they change, and which user groups may see which content.
02
Ingestion and indexing pipeline
Connectors that pull content, split it into meaningful passages, attach metadata and permissions, and keep the index current as documents change.
03
Retrieval layer
Hybrid keyword and semantic search with re-ranking and filtering, tuned on real questions so the right passages reach the model.
04
Answer generation with citations
Answers written from retrieved passages only, with links to the source, and a clear "I don't know" when the material does not cover the question.
05
Evaluation and feedback
A question set with expected sources and answers, scored automatically and by reviewers, plus in-product feedback that flags gaps in content.

How it works

  1. 01

    Collect real questions

    We gather questions people actually ask, and the documents an expert would use to answer them.

  2. 02

    Map sources and permissions

    Content owners, access rules and update frequency are documented before anything is indexed.

  3. 03

    Build the pipeline

    Ingestion, indexing, retrieval and answer generation are built and tested on the question set.

  4. 04

    Tune retrieval quality

    Most answer errors are retrieval errors. We iterate on chunking, metadata, ranking and filters until the right sources come back.

  5. 05

    Launch and maintain

    Release to a pilot group, track unanswered and poorly rated questions, and hand content gaps back to their owners.

Design decisions we make with you

  • Permission-aware retrieval

    Users only get answers from documents they are allowed to open. Permissions are checked at query time, not copied once and forgotten.

  • Freshness

    How quickly an edited or deleted document must disappear from answers, and how the pipeline detects changes.

  • Search approach

    Semantic search alone misses exact codes and names; keyword search alone misses paraphrases. We usually combine both.

  • Where the index lives

    A vector database, your existing search engine or Postgres — chosen by scale, security and what your team can run.

  • When to refuse

    The system should say it cannot find an answer rather than guess. We tune that threshold with your team.

Questions buyers ask

The system first searches your documents for passages relevant to the question, then gives those passages to a language model and asks it to answer using only that material. Because the answer is built from retrieved text, it can cite its sources and stay current when documents change.

No, if permissions are designed in. We carry access rules from your source systems into the index and filter results for each user at query time.

Not all of them. We start with the sources that answer the most common questions. The evaluation and feedback loop then shows exactly which content is missing or outdated.

RAG is the knowledge layer. It can sit behind a text chatbot, a voice agent, a search page or an internal tool.

Discuss this capability with an engineer.

Tell us about the workflow or product. We reply with questions, a suggested first step and who would work on it.