Comet website screenshot

Comet

Comet is an MLOps and GenAI observability platform. It exposes a REST API (read, write, and Model Production Monitoring endpoints) plus a Python SDK. Opik is the GenAI observability product line; MLOps is the classical experiment-tracking line.

Comet publishes 2 APIs on the APIs.io network. Tagged areas include ML, MLOps, GenAI, Experiment Tracking, and Model Monitoring.

Comet’s developer surface includes developer portal, pricing, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
26.1/100 emerging ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-07-20 · rubric v0.4
2 APIs 1 MCP Servers 2 Agent Skills 0 Features
MLMLOpsGenAIExperiment TrackingModel Monitoring

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 26.1/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 9.5 / 20
Operational Transparency 3.4 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 23/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 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/comet-ml: 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

Comet REST API

The Comet REST API exposes read endpoints (workspace, project, experiment data), write endpoints (data submission), and Model Production Monitoring (MPM) endpoints. Authenticati...

Opik (GenAI Observability)

Opik is Comet's open-source GenAI observability product. It provides spans-based tracing, evaluations, prompt management, and dataset features over an HTTP API and Python SDK. S...

MCP Servers

MCP Server

MCP SERVER

Agent Skills

instrument

AGENT SKILL

opik

AGENT SKILL

Pricing Plans

Comet Ml Plans Pricing

1 plans

PLANS

Rate Limits

Comet Ml Rate Limits

1 limits

RATE LIMITS

FinOps

Comet Ml Finops

FINOPS

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal
Portal

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 AgentSkills
AgentSkills

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: comet-ml
url: https://raw.githubusercontent.com/api-evangelist/comet-ml/refs/heads/main/apis.yml
name: Comet
kind: company
description: Comet is an MLOps and GenAI observability platform. It exposes a REST API (read, write, and Model Production
  Monitoring endpoints) plus a Python SDK. Opik is the GenAI observability product line; MLOps is the classical experiment-tracking
  line.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- ML
- MLOps
- GenAI
- Experiment Tracking
- Model Monitoring
created: '2026-05-08'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: comet-ml:comet-rest-api
  name: Comet REST API
  humanURL: https://www.comet.com/docs/v2/api-and-sdk/rest-api/overview/
  baseURL: https://www.comet.com/api/rest/v2
  tags:
  - REST
  - Experiments
  - Projects
  - Workspaces
  - Model Registry
  description: The Comet REST API exposes read endpoints (workspace, project, experiment data), write endpoints (data submission),
    and Model Production Monitoring (MPM) endpoints. Authentication uses an API key via the `Authorization` HTTP header.
  properties:
  - type: Documentation
    url: https://www.comet.com/docs/v2/api-and-sdk/rest-api/overview/
  - type: Authentication
    url: https://www.comet.com/docs/v2/api-and-sdk/rest-api/overview/
  - type: SDKs
    title: Python (comet_ml)
    url: https://www.comet.com/docs/v2/api-and-sdk/python-sdk/overview/
- aid: comet-ml:opik
  name: Opik (GenAI Observability)
  humanURL: https://www.comet.com/docs/opik/
  baseURL: https://www.comet.com/opik/api
  tags:
  - GenAI
  - Tracing
  - Evaluation
  - Spans
  description: Opik is Comet's open-source GenAI observability product. It provides spans-based tracing, evaluations, prompt
    management, and dataset features over an HTTP API and Python SDK. Self-hostable.
  properties:
  - type: Documentation
    url: https://www.comet.com/docs/opik/
  - type: SourceCode
    url: https://github.com/comet-ml/opik
common:
- type: TrustCenter
  url: security/comet-ml-trust-center.yml
- type: DomainSecurity
  url: security/comet-ml-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/comet-ml
- type: Website
  url: https://www.comet.com/
- type: Portal
  url: https://www.comet.com/docs/
- type: Pricing
  url: https://www.comet.com/site/pricing/
- type: GitHubOrganization
  url: https://github.com/comet-ml
- type: Plans
  url: plans/comet-ml-plans-pricing.yml
- type: RateLimits
  url: rate-limits/comet-ml-rate-limits.yml
- type: FinOps
  url: finops/comet-ml-finops.yml
- name: MCP Server
  url: https://github.com/comet-ml/opik-mcp
  type: MCPServer
- name: Agent Skills
  url: https://github.com/comet-ml/opik-skills
  type: AgentSkills
- url: https://www.comet.com/site/blog/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com