# GreyMatter API

**Canonical:** https://apis.io/apis/reliaquest/greymatter-api/  
**Provider:** ReliaQuest — https://apis.io/providers/reliaquest/  
**Base URL:** https://greymatter.myreliaquest.com/graphql  
**Documentation:** https://apidocs.myreliaquest.com/

GreyMatter API is one of 2 APIs that [ReliaQuest](https://apis.io/providers/reliaquest/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include GraphQL, Security Operations, Incident Response, Detection Engineering, and Playbooks. The published artifact set on APIs.io includes API documentation, an API reference, authentication docs, and rate-limit docs.

The GreyMatter API exposes select GreyMatter capabilities through a single GraphQL endpoint. All requests are HTTPS POSTs with JSON bodies authenticated by an X-API-KEY header; 58 queries and 95 mutations cover incidents, cases, tasks, detections and change control, playbooks and playbook runs, DRP alerts and access-control policies, discover tasks, assets, identities, indicators, reference lists, emergency contacts, AI context memory, users, roles, pods, access groups and API keys. Paginated queries follow the Relay GraphQL Connections standard and entities are addressed by base64 Global IDs. Rate limited to 5,000 tokens per user per hour. Introspection is available to authenticated callers; the published contract is a Postman collection served by ReliaQuest at apidocs.myreliaquest.com.

## Machine-readable artifacts (15)

- **Documentation** — https://apidocs.myreliaquest.com/
- **APIReference** — https://apidocs.myreliaquest.com/
- **GraphQL** — https://greymatter.myreliaquest.com/graphql
- **Postman** — https://apidocs.myreliaquest.com/api/collections/39440280/2sAYQZJYMC?segregateAuth=true&versionTag=latest
- **PostmanCollection** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/postman/reliaquest-greymatter-api.postman_collection.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/postman/reliaquest-greymatter-operations.txt
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/authentication/reliaquest-authentication.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/rate-limits/reliaquest-rate-limits.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/conventions/reliaquest-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/errors/reliaquest-problem-types.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/data-model/reliaquest-data-model.yml
- **Lifecycle** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/lifecycle/reliaquest-lifecycle.yml
- **MCPServer** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/mcp/reliaquest-mcp.yml
- **AgentSkill** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/skills/_index.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/reliaquest/refs/heads/main/apis.yml

## Other ReliaQuest APIs (1)

- [Digital Shadows SearchLight Portal API](https://apis.io/apis/reliaquest/searchlight-portal-api/)

## Tags

GraphQL, Security Operations, Incident Response, Detection Engineering, Playbooks, Digital Risk Protection

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