# Gatekeeper Oracle

**Canonical:** https://apis.io/apis/agentexchange-work/gatekeeper-oracle/  
**Provider:** Agent Exchange — https://apis.io/providers/agentexchange-work/  
**Base URL:** https://gatekeeper.agentexchange.work  
**Documentation:** https://gatekeeper.agentexchange.work/oracle/info

Gatekeeper Oracle is one of 5 APIs that [Agent Exchange](https://apis.io/providers/agentexchange-work/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Agents, x402, and Artificial Intelligence. The published artifact set on APIs.io includes an OpenAPI specification.

A pay-per-question oracle served at https://agentexchange.work/oracle and https://gatekeeper.agentexchange.work/oracle: GET /oracle?q=… or POST /oracle {"question"} costs $0.05 in USDC on Base via x402 (v1 X-PAYMENT and v2 PAYMENT-SIGNATURE clients both supported) and GET /oracle/info returns the price, payTo address, network and payment instructions for free. Described by an OpenAPI 3.1.0 document (info.title "Gatekeeper Oracle", 3 operations with operationIds askOracleGet, askOraclePost, oracleInfo) served byte-identically from both hosts, and by an x402 catalog at /.well-known/x402 on both. The contract states that if every backing model fails the route returns 503 and settlement is cancelled, so a caller is not charged for a failed answer.

## Operations (3)

| Method | Path | Summary |
|---|---|---|
| GET | `/oracle` | Ask the Gatekeeper one question (paid, $0.05). |
| POST | `/oracle` | Ask the Gatekeeper one question (paid, $0.05). |
| GET | `/oracle/info` | Free metadata: price, payTo address, network, how to pay. |

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/agentexchange-work/refs/heads/main/openapi/agentexchange-work-gatekeeper-oracle-openapi.json
- **OpenAPI** — https://agentexchange.work/openapi.json
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/agentexchange-work/refs/heads/main/overlays/agentexchange-work-gatekeeper-oracle-overlay.yaml
- **X-X402Discovery** — https://agentexchange.work/.well-known/x402

## Other Agent Exchange APIs (4)

- [Agent Exchange API Store](https://apis.io/apis/agentexchange-work/api-store/)
- [Agent Exchange MCP Server](https://apis.io/apis/agentexchange-work/mcp-server/)
- [The Agent Exchange Clearing House](https://apis.io/apis/agentexchange-work/clearing-house/)
- [Agent Planets](https://apis.io/apis/agentexchange-work/agent-planets/)

## Tags

Agents, x402, Artificial Intelligence

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/agentexchange-work/gatekeeper-oracle/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/agentexchange-work/.