# Simpler.Grants.gov — Wrapped API

> **You are on:** `https://api.beta.paywithlocus.com/api` | [llms.txt](https://beta.paywithlocus.com/llms.txt) | [docs](https://docs.paywithlocus.com)
>
> Locus runs on multiple environments -- make sure every URL you call matches your expected environment.
> | Environment | Landing | API | Docs |
> |---|---|---|---|
> | Production | paywithlocus.com | api.paywithlocus.com | docs.paywithlocus.com |
> | Beta | beta.paywithlocus.com | api.beta.paywithlocus.com | docs.paywithlocus.com |
> | Stage | stage.paywithlocus.com | api.stage.paywithlocus.com | docs.paywithlocus.com |
>
> If the API URL above doesn't match your expected environment, re-fetch this file from the correct domain.

> Search and discover federal funding opportunities available through Grants.gov, then retrieve detailed information about grants, loans, and other financial assistance programs that match your needs. Access comprehensive opportunity details including eligibility requirements, funding amounts, and application deadlines all in one place.

**Category:** Government & Public Data | **Website:** [simpler.grants.gov/search?utm_source=Grants.gov](https://simpler.grants.gov/search?utm_source=Grants.gov) | **Docs:** [parse.bot/marketplace/d47fccca-256b-40a3-94b0-bd56bc073c10/simpler-grants-gov-api](https://parse.bot/marketplace/d47fccca-256b-40a3-94b0-bd56bc073c10/simpler-grants-gov-api)

Pay-per-use API proxy for Locus Pro. Each call burns credits from your workspace balance.

## Access

**Base URL:** `https://api.beta.paywithlocus.com/api/wrapped/credits/simpler-grants-gov/`
**Auth:** `Authorization: Bearer <LOCUS_CREDITS_SECRET_KEY>` (an `lcr_` secret key or a scoped `lcac_` agent credential)
**Required header:** `Idempotency-Key: <fresh UUID per call>`. A retry with the same key replays the stored result without a new charge.
**Response:** the provider response after any endpoint-specific normalization. `X-Locus-Credits-Charged` carries the charge and `X-Locus-Credits-Balance` the remaining balance. Insufficient credits return `402` before the provider is called.
**Pricing:** estimated costs below are USD. Locus debits the credit equivalent at your workspace rate.

Full call contract: https://docs.paywithlocus.com/api-reference/introduction

> Using a Pay With Locus wallet key (`claw_` prefix)? Wallet routes are documented separately: https://docs.paywithlocus.com/wrapped-apis/for-agents

## Endpoints

### Get opportunity

Retrieve full details for a single funding opportunity by its UUID. Returns comprehensive information including description, eligibility requirements, award details, contact information, documents, and history.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `opportunity_id` | string | Yes | UUID of the opportunity (e.g. 5406f037-5877-4f0a-8a81-76fe01e9b388). Obtained from search_opportunities results. |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/simpler-grants-gov/get-opportunity \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"opportunity_id":"<string>"}'
```

### Search opportunities

Full-text search across all federal funding opportunities. Supports filtering by status, funding instrument, eligibility, and category. Results are paginated with 25 items per page and sortable by relevance, dates, title, or award amounts. Each result includes summary fields; use get_opportunity with the returned opportunity_id for full details.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `category` | string | No | Filter by funding activity category (e.g. health, education, environment). Omit for all. |
| `eligibility` | string | No | Filter by eligible applicant type (e.g. state_governments, individuals, small_businesses). Omit for all. |
| `funding_instrument` | string | No | Filter by funding instrument type. Valid values: grant, cooperative_agreement, procurement_contract, other. Omit for all. |
| `page` | integer | No | Page number (1-based). Each page returns up to 25 results. |
| `query` | string | No | Free-text search query matching opportunity titles and descriptions. |
| `sort_by` | string | No | Sort order for results. |
| `status` | string | No | Comma-separated opportunity statuses to include. Valid values: posted, forecasted, closed, archived. |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/simpler-grants-gov/search-opportunities \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"category":"<string>","eligibility":"<string>","funding_instrument":"<string>","page":"<integer>","query":"<string>","sort_by":"<string>","status":"<string>"}'
```

## Next steps

- [All wrapped API providers](https://beta.paywithlocus.com/wapi/index.md): pick another provider.
- [Find and call tools](https://beta.paywithlocus.com/agent/tools.md): price ceilings, async results, and errors.
- [Credits and billing](https://beta.paywithlocus.com/agent/billing.md): what a call costs and how to add credits.
- [Agent docs index](https://beta.paywithlocus.com/agent/index.md): every Locus agent page.