Quasar

Quasar (QuasarDB, by Bureau 14) is a distributed, high-performance time-series database built for the hardest data problems, where precision, speed, scale, and accuracy must hold at the same time. It combines live ingestion, lossless-compressed historical retention, and heavy analytics on a single distributed system, deployed in cloud, edge, and appliance form across aerospace and defense, finance, industrial operations, and scientific research. QuasarDB exposes a JWT-authenticated REST API plus native client libraries in Python, Java, Go, .NET, C, PHP, R, and Ruby, and integrates with Grafana, Kafka, Spark, NATS, Prometheus, and Dask.

Quasar publishes 10 APIs on the APIs.io network, including cluster API, Login API, max-in-buffer-size API, and 7 more. Tagged areas include Company, Time Series Database, Database, Analytics, and Infrastructure.

Quasar’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, support, CLI, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub
41.5/100 thin ▬ flat Agent 65/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
10 APIs 1 MCP Servers
CompanyTime Series DatabaseDatabaseAnalyticsInfrastructureReal-Time DataAerospaceFinance

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 41.5/100 · thin
Contract Quality 9.4 / 25
Developer Ergonomics 16.1 / 20
Commercial Clarity 5.3 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 65/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/quasar: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 10

Individual APIs this provider publishes, each with its own machine-readable definition.

Quasar cluster API

Operational statistics about the QuasarDB cluster

Quasar Login API

The Login API from Quasar — 1 operation(s) for login.

Quasar max-in-buffer-size API

The max-in-buffer-size API from Quasar — 1 operation(s) for max-in-buffer-size.

Quasar option API

The option API from Quasar — 2 operation(s) for option.

Quasar parallelism API

The parallelism API from Quasar — 1 operation(s) for parallelism.

Quasar Prometheus API

The Prometheus API from Quasar — 2 operation(s) for prometheus.

Quasar query API

The query API from Quasar — 1 operation(s) for query.

Quasar Status API

The Status API from Quasar — 2 operation(s) for status.

Quasar Tables API

The Tables API from Quasar — 1 operation(s) for tables.

Quasar tags API

The tags API from Quasar — 1 operation(s) for tags.

Scroll for all 10

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

quasar-mcp.yml

MCP SERVER

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Quasar Authentication

apiKey · 2 schemes

SECURITY

Quasar Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Quasar Trust Center

SOC 2

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Quasar Agentic Access

12 operations · 4 acting

12 operations · 4 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt
 AgenticAccess
AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 DataModel
DataModel
 Conformance
Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 CLI
CLI

Access & Security 4

Authentication, authorization, and security posture

Authentication
Authentication
 Compliance
Compliance
 TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 2

The organization behind the API

Blog
Blog
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: quasar
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/quasar.png
name: Quasar
description: Quasar (QuasarDB, by Bureau 14) is a distributed, high-performance time-series database built for the hardest
  data problems, where precision, speed, scale, and accuracy must hold at the same time. It combines live ingestion, lossless-compressed
  historical retention, and heavy analytics on a single distributed system, deployed in cloud, edge, and appliance form across
  aerospace and defense, finance, industrial operations, and scientific research. QuasarDB exposes a JWT-authenticated REST
  API plus native client libraries in Python, Java, Go, .NET, C, PHP, R, and Ruby, and integrates with Grafana, Kafka, Spark,
  NATS, Prometheus, and Dask.
url: https://raw.githubusercontent.com/api-evangelist/quasar/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- partech
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Time Series Database
- Database
- Analytics
- Infrastructure
- Real-Time Data
- Aerospace
- Finance
apis:
- aid: quasar:quasar-cluster-api
  name: Quasar cluster API
  description: Operational statistics about the QuasarDB cluster
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - cluster
  properties:
  - type: OpenAPI
    url: openapi/quasar-cluster-api-openapi.yml
- aid: quasar:quasar-login-api
  name: Quasar Login API
  description: The Login API from Quasar — 1 operation(s) for login.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - Login
  properties:
  - type: OpenAPI
    url: openapi/quasar-login-api-openapi.yml
- aid: quasar:quasar-max-in-buffer-size-api
  name: Quasar max-in-buffer-size API
  description: The max-in-buffer-size API from Quasar — 1 operation(s) for max-in-buffer-size.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - max-in-buffer-size
  properties:
  - type: OpenAPI
    url: openapi/quasar-max-in-buffer-size-api-openapi.yml
- aid: quasar:quasar-option-api
  name: Quasar option API
  description: The option API from Quasar — 2 operation(s) for option.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - option
  properties:
  - type: OpenAPI
    url: openapi/quasar-option-api-openapi.yml
- aid: quasar:quasar-parallelism-api
  name: Quasar parallelism API
  description: The parallelism API from Quasar — 1 operation(s) for parallelism.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - parallelism
  properties:
  - type: OpenAPI
    url: openapi/quasar-parallelism-api-openapi.yml
- aid: quasar:quasar-prometheus-api
  name: Quasar Prometheus API
  description: The Prometheus API from Quasar — 2 operation(s) for prometheus.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - Prometheus
  properties:
  - type: OpenAPI
    url: openapi/quasar-prometheus-api-openapi.yml
- aid: quasar:quasar-query-api
  name: Quasar query API
  description: The query API from Quasar — 1 operation(s) for query.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - query
  properties:
  - type: OpenAPI
    url: openapi/quasar-query-api-openapi.yml
- aid: quasar:quasar-status-api
  name: Quasar Status API
  description: The Status API from Quasar — 2 operation(s) for status.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/quasar-status-api-openapi.yml
- aid: quasar:quasar-tables-api
  name: Quasar Tables API
  description: The Tables API from Quasar — 1 operation(s) for tables.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - Tables
  properties:
  - type: OpenAPI
    url: openapi/quasar-tables-api-openapi.yml
- aid: quasar:quasar-tags-api
  name: Quasar tags API
  description: The tags API from Quasar — 1 operation(s) for tags.
  humanURL: https://doc.quasar.ai/master/user-guide/api/rest.html
  baseURL: https://quasar.ai
  tags:
  - tags
  properties:
  - type: OpenAPI
    url: openapi/quasar-tags-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DeveloperPortal
  url: https://doc.quasar.ai/master/
- type: Documentation
  url: https://doc.quasar.ai/master/
- type: APIReference
  url: https://doc.quasar.ai/master/user-guide/api/rest.html
- type: GettingStarted
  url: https://doc.quasar.ai/master/user-guide/howto/index.html
- type: GitHubOrganization
  url: https://github.com/bureau14
- type: Blog
  url: https://quasar.ai/blog-news/
- type: Pricing
  url: https://quasar.ai/deployment-pricing/
- type: Support
  url: https://quasar.ai/support-services/
- type: Packages
  url: packages/quasar-packages.yml
- type: SDKs
  url: packages/quasar-packages.yml
- type: CLI
  url: cli/quasar-cli.yml
- type: MCPServer
  url: mcp/quasar-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/quasar-llms.txt
- type: Authentication
  url: authentication/quasar-authentication.yml
- type: Conventions
  url: conventions/quasar-conventions.yml
- type: ErrorCatalog
  url: errors/quasar-problem-types.yml
- type: Lifecycle
  url: lifecycle/quasar-lifecycle.yml
- type: DataModel
  url: data-model/quasar-data-model.yml
- type: Conformance
  url: conformance/quasar-conformance.yml
- type: Compliance
  url: https://trust.quasar.ai/
- type: AgenticAccess
  url: agentic-access/quasar-agentic-access.yml
- type: TrustCenter
  url: security/quasar-trust-center.yml
- type: DomainSecurity
  url: security/quasar-domain-security.yml
- type: Website
  url: https://quasar.ai/
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 15
  pass: local-v1