---
title: "Brady and Giglio discovery request (United States)"
url: "https://ailawframework.com/precedents/criminal-law/us-brady-giglio-discovery-request"
type: "precedent"
site: "AI Law Framework"
id: "a20-us-brady-giglio-discovery-request"
area_id: "A20"
kind: "letter"
ai_level: "yellow"
version: 1
task_ids: ["A20-P20260916-1", "A20-T1-R12"]
law_stated_as_at: "2026-10-22"
---

# Brady and Giglio discovery request (United States)

> A defense letter requesting favorable and impeachment information and, in federal court, Rule 16 material, with the Justice Manual's broader policy limited to federal prosecutors.

Canonical page: https://ailawframework.com/precedents/criminal-law/us-brady-giglio-discovery-request  
Law stated as at: 2026-10-22

Site index for agents: https://ailawframework.com/llms.txt

## Key facts

- Kind: Letter. A letter or email you adapt and send.
- Practice area: [Criminal Law](https://ailawframework.com/precedents/criminal-law.md)
- Jurisdictions: United States
- AI level: Yellow. You and the tool draft together, with you directing. You check every statement you rely on.
- Law stated as at: 2026-10-22
- Status: Maintained. Checked on 2026-10-22 against the 4 authorities it cites, for United States.

## When to use it

Use when defense counsel asks the prosecution for favorable and impeachment information in a US criminal case. Choose the federal or the state version before sending. Do not use it as a defense filing that states the facts of the offense.

## Used for these tasks

- [Prepare a missing-brief and exhibit request list](https://ailawframework.com/practice/criminal-law/prepare-a-missing-brief-and-exhibit-request-list.md)
- [Build a disclosure and unused-material tracker](https://ailawframework.com/practice/criminal-law/build-a-disclosure-and-unused-material-tracker.md)

## How AI may be used

A tool may insert the case caption, the charge as the charging document prints it, and the prosecutor's name from the appearance.

**AI may:**

- Fill the caption from the charging document
- Leave the federal or state block the lawyer did not select out of the draft the lawyer is editing
- List Rule 16 categories only in a federal draft

**AI must not:**

- Must not recite a factual account of the offense
- Must not tell a state prosecutor that Justice Manual 9-5.001 binds that office
- Must not demand witness statements that Rule 16(a)(2) excludes, beyond 18 U.S.C. 3500
- Must not send the letter

**The lawyer checks:**

- The forum block matches the court
- The Brady paragraph quotes the holding that was opened, including materiality to guilt or punishment
- The Giglio paragraph is about information that bears on a witness's credibility, of the kind in that case
- The lawyer has read the reciprocal-discovery warning before a federal Rule 16 request goes out

## Authorities

- [Brady v. Maryland, 373 U.S. 83 (1963)](https://www.law.cornell.edu/supremecourt/text/373/83)
- [Giglio v. United States, 405 U.S. 150 (1972)](https://www.law.cornell.edu/supremecourt/text/405/150)
- [U.S. Department of Justice, Justice Manual 9-5.001 (Policy Regarding Disclosure of Exculpatory and Impeachment Information) and 9-5.002 (Criminal Discovery)](https://www.justice.gov/jm/jm-9-5000-issues-related-trials-and-other-court-proceedings)
- [Federal Rule of Criminal Procedure 16 (Discovery and Inspection)](https://www.law.cornell.edu/rules/frcrmp/rule_16)

## Full text and drafting notes

The full text and the drafting notes are not part of this public page. Signed-in firm accounts can read them at https://ailawframework.com/precedents/criminal-law/us-brady-giglio-discovery-request and through the signed-in MCP connector https://ailawframework.com/mcp/firm.

*Practice guidance for planning and review. Confirm current primary sources and the requirements of the actual matter. This is general information, not legal advice.*