---
title: "U.S. Federal Grant Opportunity Detail"
method: GET
path: "/v1/grants/detail"
tags: ["grant detail", "eligibility", "award ceiling", "deadline", "Grants.gov"]
---

# U.S. Federal Grant Opportunity Detail

`GET /v1/grants/detail`

## Request

- Base URL: `https://genuinegood.online`
- URL: `https://genuinegood.online/v1/grants/detail`
- Auth: none declared

Retrieve an official Grants.gov opportunity with normalized applicant types, eligibility text, award range, deadline, categories, and provenance. GET compatibility accepts the same input as query parameters. Array values may be comma-separated.

## Query parameters

- `opportunityId` integer, required

## Headers

- `PAYMENT-SIGNATURE` string

## Response `200`

Paid result

- object
  - `id` string, required
  - `title` string, required
  - `agency` string
  - `status` string
  - `deadline` string, nullable
  - `closeDate` string, nullable
  - `daysRemaining` integer, nullable
  - `officialUrl` string, uri, required
  - `source` object, required
    - `publisher` 'Grants.gov', required
    - `api` string, uri, required
    - `accessedAt` string, date-time, required
    - `terms` string, uri

## Other responses

- `402`: x402 payment required: 0.08 USDC on Base mainnet

---

[API](https://skmtc.dev/genuinegood/apis/genuine-good-grants-genuine-good-grants-api.md) · [All operations](https://skmtc.dev/genuinegood/apis/genuine-good-grants-genuine-good-grants-api/llms.txt) · [OpenAPI document](https://skmtc.dev/genuinegood/apis/genuine-good-grants-genuine-good-grants-api/revisions/5511533a9771?raw)