How to research a legal question with primary sources

A legal research memo is useful when another reader can open its authorities and check the reasoning. Asking an agent for a confident answer before fixing the jurisdiction and date can produce a polished memo about the wrong rule.

This tutorial builds a source trail for a bounded research question. It can help prepare a discussion with counsel or organize primary material. It does not establish that a course of action is lawful, and an AI summary should not be the final authority for a legal decision.

1. Define the question before the search

Write down the jurisdiction, relevant dates and facts that change the question. Remove unnecessary names or confidential material from a general research request. Distinguish the rule in force now from the rule applicable to a past event.

After setting up Vaaya, give the agent a request such as:

Research [specific legal question] in [jurisdiction], as of [date].
Relevant facts: [short, necessary factual description].
Find primary statutes, regulations and opinions before summarizing.
Use Vaaya within [research budget] and return source URLs.
For each proposition include the authority, date and exact location
in the source. Separate binding authority, other authority and commentary.
List contrary material and anything not verified. Do not invent citations.
Produce a research memo for review, not a final legal conclusion.

If the question crosses jurisdictions, split it into separate sections. A search across all courts can be useful discovery, but it is not a substitute for identifying which authority applies.

2. Choose sources with the right coverage

Vaaya's catalog includes courtlistener/cases, which takes q and supports fields such as court and filing-date boundaries. govlaws/search takes a query for current US federal regulations, while govlaws/resolve accepts a CFR citation. These routes do not establish coverage of state law or historical versions. Ask consult to select the appropriate route and inspect its current schema before running.

Use each source for the material it covers. CourtListener's coverage notes describe its American case-law and federal filing collections. Coverage is extensive but a missing result is not proof that no relevant authority exists.

Keep the search terms, filters and retrieval time with the results. When you broaden a query, record that change so another researcher can reproduce the search instead of relying on an unexplained selection of cases.

3. Open the authority behind the result

Treat search results as leads. Retrieve the original opinion, regulation or statute and verify that it contains the proposition you intend to use. Keep the full citation and a source link next to the note.

For an opinion, distinguish the court's holding from party arguments, procedural history or quoted material. For a regulation, identify the relevant version and effective date. A page showing current text may not answer a question about conduct several years earlier.

When source text is unavailable, label the authority unverified. An agent should not manufacture a paragraph number or quotation to make a memo look finished. Use short quotations only where the wording itself matters, with the surrounding source available to the reviewer.

4. Write from an evidence table

Build the table before writing the prose. This example specifies fields rather than reporting research on an actual dispute.

Field	What the memo needs
Proposition	The narrow claim being supported
Authority	Citation, jurisdiction and source type
Location	Section, page or paragraph in the original
Date	Decision, effective date or relevant version
Limit	Exception, factual distinction or unresolved treatment

Ask the agent to identify material that could weaken its initial answer. Keep conflicting authorities visible, including why they may differ. The absence of a contradiction in one search is not verification that none exists.

5. Hand over the gaps with the memo

Produce a short issue statement, a sourced discussion and a list of questions for further review. Link every material legal proposition to the table. Keep the factual assumptions separate so a reviewer can see how a changed fact could affect the research.

Check citations and source passages manually before relying on the memo. Where later treatment or a high-stakes decision matters, use the appropriate legal research tools and qualified professional review. Save the source list, search record and unresolved items with the document; those are the starting point for the next research pass.

Questions

Does a search result establish that a case is still good law?

No. A retrieved opinion and a generated summary do not establish later treatment. Check subsequent authorities and use an appropriate legal research service or qualified reviewer when the conclusion matters.

Can these tools answer questions in any jurisdiction?

Coverage varies by provider. The CourtListener and GovLaws routes discussed here are useful for US material; inspect the relevant source and jurisdiction before assuming coverage elsewhere.

What should the agent do when it cannot retrieve a cited case?

Keep the citation as unverified, record the failed source and look for an authoritative copy. Do not invent a quotation, holding or pinpoint reference to complete the memo.