Obsidian and AI: ask questions about your own notes

A September 1 note proposes a customer account area. A September 8 note postpones it. Asked what belongs in the first release, an AI may confidently repeat the earlier proposal. A useful answer about your Obsidian notes ties every conclusion to a note, a date and a decision status, and the small experiment below checks exactly that.

Obsidian stores notes as Markdown files inside a vault. Any tool that reads local files can therefore work with a copy of the notes you select.

• How Obsidian stores data

Start with a copy of one topic

Choose the notes for one project: meetings, decisions, open questions. Copy them into a separate folder and keep the filenames and structure readable. You will want the original vault later, to compare against.

notes-for-ai/
├── meetings/
│   ├── 2026-09-01.md
│   └── 2026-09-08.md
├── decisions/
│   └── website-scope.md
└── questions.md

The structure is only a sample. Take out anything the task does not need, such as personal entries, secrets and third-party information. A local file can still reach a cloud model if the agent sends its contents there. Where a file is stored and where it is processed are separate questions.

That distinction deserves a closer look. Your vault stays on your disk, but a tool may send excerpts to a cloud provider. Check the route first, on a small copy and in the settings of the tool you actually use. The word “local” in a description of storage tells you nothing about processing.

Connect the notes to an agent

Open the prepared folder in a tool that works with local files. You could launch Claude Code from that directory, for instance. In the first request, ask it only to read and to answer in chat:

Work with this copy of the notes. Find which features we decided to include in the first website version. For every conclusion, provide the filename and section heading. Separate approved decisions from proposals. If sources conflict, show the disagreement. Do not modify files.

The workflow is our own example. No plugin is installed or demonstrated here. Claude Code's ability to read files is described in its product overview.

• product overview

Do not open with “read everything and remember it.” Give the question boundaries. Get an accurate answer on one topic, and only then widen the set of sources.

Why ordinary search is a good first step

If you know the project name or a distinctive term, find it with Obsidian's built-in search first and hand the relevant entries to the agent afterward. You get a clear starting set, and a missing document is easier to notice.

• Obsidian Search

Semantic search earns its place when an idea was written down in different words. Even then, open the whole passage it found. The text around it may hold a qualification, a cancellation date or a link to a newer decision.

Verify an answer against the notes

Open each cited entry and check three things: whether it really supports the claim, who made it, and whether it was revised later. A file's last-modified date is not the decision date. The file may have been edited for some other reason.

Try a simple check. In one note, propose a user account area. In a later note, record the decision to leave it out of the first release. Then ask what the team approved. The answer should point to the later decision and explain that the account area was proposed and then deferred.

In our illustrative pair of notes, September 1 is a proposal to add an account area. September 8 records a decision to postpone it beyond the first release. “Accounts are included in version one” is wrong even with a link to a real file underneath it. The note to find is the one that establishes the current status. Familiar words in the text are not enough.

Then ask a question the copied notes cannot answer, such as the final budget when no document states it. A good answer here says the information is missing. A plausible-looking amount is a failure.

Verify one claim at a time. Find the excerpt, open the full note, check its date and status, and only then state the conclusion with a section link. If the final budget is absent, the chain should end with “these notes do not contain that information”. A passage on a related subject does not fill the gap.

Save a summary without losing the sources

After verification, request a separate draft:

# First website release

## Approved decisions
- Decision, date and link to the original entry.

## Deferred
- What was postponed and why.

## Unresolved
- Conflicts and questions without a confirmed answer.

Save it as a new document and leave the original meeting notes untouched. If decisions change, you can still see what the earlier conclusion rested on. Use your vault's usual link format and check that the links open.

When a dedicated plugin helps

A plugin makes sense once searching and questioning your notes has become a regular part of your work. Before choosing one, find out what it indexes, where it sends text, how the index updates and whether it cites sources. A polished interface answers none of those questions.

Try two questions with known answers and one whose answer is absent from the notes. If the agent finds the decisions, shows its sources and admits the gaps, expand the document set gradually. And choose a plugin for a problem you have already run into, whether that is repeated searches, index updates or saving summaries.

Sources and verification

Technical sources and calculations checked on October 3, 2026. Scenarios and diagrams are illustrative Neaptide examples. We ran no comparative product benchmarks.

• Obsidian · Data storage
• Obsidian · Search
• Obsidian · Plugin security