# WhisperGraph and Control Plane (Cypher API)

**Canonical:** https://apis.io/apis/whisper-online/whispergraph-control-plane/  
**Provider:** Whisper Security — https://apis.io/providers/whisper-online/  
**Base URL:** https://graph.whisper.online  
**Documentation:** https://whisper.online/docs/control-plane

WhisperGraph and Control Plane (Cypher API) is one of 5 APIs that [Whisper Security](https://apis.io/providers/whisper-online/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Graph Database, Threat Intelligence, Agent Identity, Egress, and DNS. The published artifact set on APIs.io includes API documentation, an API reference, rate-limit docs, and authentication docs.

The documented front door for both halves of the platform: POST https://graph.whisper.online/api/query runs openCypher against WhisperGraph (41 node labels, 52 edge types; identify, assess, explain, walk, origins, history, variants, the psl.* family, named views attackSurface / blastRadius / brandPhishingFleet, and raw read-only MATCH — keyless, capped at 100 rows) and, with X-API-Key, the one control verb CALL whisper.agents({op, args}) for register, identity, list, agent, connect, policy, logs and revoke. Errors are RFC 7807 application/problem+json with stable type slugs; the whisper.agents envelope carries ok/status/error/ retry_after. graph.whisper.security is the legacy host with the same three endpoints (POST and GET /api/query, GET /api/query/stats).

## Machine-readable artifacts (9)

- **Documentation** — https://whisper.online/docs/control-plane
- **APIReference** — https://www.whisper.security/docs/cypher-api/reference
- **Documentation** — https://whisper.online/docs/graph-api
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/whisper-online/refs/heads/main/errors/whisper-online-problem-types.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/whisper-online/refs/heads/main/rate-limits/whisper-online-rate-limits.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/whisper-online/refs/heads/main/conventions/whisper-online-conventions.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/whisper-online/refs/heads/main/data-model/whisper-online-data-model.yml
- **OAuthScopes** — https://raw.githubusercontent.com/api-evangelist/whisper-online/refs/heads/main/scopes/whisper-online-scopes.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/whisper-online/refs/heads/main/authentication/whisper-online-authentication.yml

## Other Whisper Security APIs (4)

- [Whisper API](https://apis.io/apis/whisper-online/whisper-api/)
- [WhisperGraph MCP Server](https://apis.io/apis/whisper-online/whispergraph-mcp-server/)
- [Whisper A2A Agent](https://apis.io/apis/whisper-online/whisper-a2a-agent/)
- [Whisper RDAP and Identity Verification](https://apis.io/apis/whisper-online/whisper-rdap/)

## Tags

Graph Database, Threat Intelligence, Agent Identity, Egress, DNS

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/whisper-online/whispergraph-control-plane/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/whisper-online/.