---
title: "Search ACTIVE US federal contract opportunities..."
method: GET
path: "/api/gov/contract-opportunities"
tags: ["gov"]
---

# Search ACTIVE US federal contract opportunities...

`GET /api/gov/contract-opportunities`

## Request

- Base URL: `https://2s.io`
- URL: `https://2s.io/api/gov/contract-opportunities`
- Auth: API key in header `PAYMENT-SIGNATURE`

Search ACTIVE US federal contract opportunities (solicitations, combined synopses, sources-sought, RFPs/RFQs) from SAM.gov. Requires a posted-date window: postedFrom and postedTo as MM/DD/YYYY, max 1 year span. Optional filters: title (keyword), naics (NAICS code), state (place/office 2-letter), setAside (set-aside code, e.g. SBA, 8A, WOSB, SDVOSBC), ptype (notice type: o=solicitation, p=presolicitation, r=sources-sought, k=combined, etc.); page with limit (1-100) and offset. Returns each opportunity with notice id, title, solicitation number, type, department path, posted date, response deadline, NAICS, classification, set-aside, active flag, contracting office location, and a sam.gov UI link — plus a total match count. Data: SAM.gov, free and public-domain. Distinct from /api/gov/usaspending-awards (past awards) — this is what is OPEN to bid now. Fresh, time-sensitive data for govcon / capture / bid-intelligence agents.

## Query parameters

- `postedFrom` string, required
- `postedTo` string, required
- `title` string
- `naics` string
- `state` string
- `setAside` string
- `ptype` string
- `limit` integer
- `offset` integer
- `trial` 1

## Other responses

- `200` (unresolved $ref)
- `400`: Invalid request — not charged. error.code: BAD_REQUEST or INVALID_PARAM (parameter validation; error.details.issues lists each problem), MALFORMED_JSON, or a request-specific code. Other client errors: 405 METHOD_NOT_ALLOWED (wrong verb; see the Allow header), 413 PAYLOAD_TOO_LARGE.
- `402`: Payment required. Body is the x402 PaymentRequirements envelope with a multi-network accepts array; the per-call price is in accepts[].amount (and on the operation as x-2s-price). Sign for whichever rail you hold USDC on (EIP-3009 for Base, partial SPL transfer for Solana) and retry with the PAYMENT-SIGNATURE header (X-PAYMENT also accepted for v1 clients). Also PAYMENT_SETTLE_FAILED (error envelope) when a verified payment failed to settle: error.details.chargeStatus is "not_charged" (retry with a fresh payment) or "unknown" (the authorization may still settle before its deadline — check it before retrying).
- `429`: Too many requests — RATE_LIMITED: our per-IP / per-payer limiter. Not charged; retry after Retry-After.
- `5XX`: Server-side failure. 500 INTERNAL: unexpected error; quote error.errorId (also the X-2s-Error-Id header). 502 UPSTREAM_UNAVAILABLE (or another UPSTREAM_* code): the data provider failed — composite endpoints refuse unbilled when every source fails. 503 SERVICE_PAUSED: endpoint paused by the operator kill switch, retry after Retry-After; 503 SPEND_CAP: daily upstream budget exhausted. 504 UPSTREAM_TIMEOUT. Not charged.

---

[API](https://skmtc.dev/2s-io/apis/2s-the-most-everything-api.md) · [All operations](https://skmtc.dev/2s-io/apis/2s-the-most-everything-api/llms.txt) · [OpenAPI document](https://skmtc.dev/2s-io/apis/2s-the-most-everything-api/revisions/da4c5caf686e?raw)