Loki website screenshot

Loki

Loki is an open source log aggregation system from Grafana Labs designed to store and query logs efficiently using labels instead of full-text indexing.

Loki publishes 5 APIs on the APIs.io network, including Config API, Loki API, Metrics API, and 2 more. Tagged areas include Logging, Observability, Open-Source, and Grafana.

Loki’s developer surface includes documentation, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
30.1/100 thin ▬ flat Agent 19/100 agent aware self hosted · AGPL-3.0 Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0
AccessFreemium
5 APIs
LoggingObservabilityOpen-SourceGrafana

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0
Composite quality — 30.1/100 · thin
Contract Quality 7.5 / 20
Developer Ergonomics 1.9 / 16
Access Clarity 3.8 / 16
Operational Transparency 2.7 / 10
Contract Governance 0.0 / 10
Discoverability 3.7 / 8
Open Source Surface 6.5 / 10
Create-or-Update Ergonomics 2.2 / 10
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 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 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/loki: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 5

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

Loki Config API

The Config API from Loki — 1 operation(s) for config.

Loki Loki API

The Loki API from Loki — 17 operation(s) for loki.

Loki Metrics API

The Metrics API from Loki — 1 operation(s) for metrics.

Loki Otlp API

The Otlp API from Loki — 1 operation(s) for otlp.

Loki Ready API

The Ready API from Loki — 1 operation(s) for ready.

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Loki HTTP Config API

OPEN COLLECTION

HTTP Config Loki API

OPEN COLLECTION

Loki HTTP Config Metrics API

OPEN COLLECTION

Loki HTTP Config Otlp API

OPEN COLLECTION

Loki HTTP Config Ready API

OPEN COLLECTION

Loki HTTP API

OPEN COLLECTION

Scroll for all 7

Pricing Plans 1

Published pricing tiers and plan structures.

Loki Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Loki Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Loki Finops

FINOPS

Security Posture 2

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

Loki Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Loki Trust Center

SOC 2, ISO 27001, PCI DSS, FedRAMP, GDPR, CSA STAR

SECURITY

Agentic Access 1

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

Loki Agentic Access

27 operations · 8 acting

27 operations · 8 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide
ContributionGuide
 Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct
CodeOfConduct
 GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

IssueTracker
IssueTracker
 Releases
Releases

Commercial 1

Pricing, plans, and the legal terms of use

License
License

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: loki
name: Loki
description: Loki is an open source log aggregation system from Grafana Labs designed to store and query logs efficiently
  using labels instead of full-text indexing.
type: Index
deliveryModel:
  model: self-hosted
  license: AGPL-3.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/loki.png
tags:
- Logging
- Observability
- Open-Source
- Grafana
tags_raw:
- Logging
- Observability
- Open Source
- Grafana
url: https://raw.githubusercontent.com/api-evangelist/loki/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: loki:loki-config-api
  name: Loki Config API
  description: The Config API from Loki — 1 operation(s) for config.
  humanURL: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  tags:
  - Config
  properties:
  - type: OpenAPI
    url: openapi/loki-config-api-openapi.yml
  - type: Documentation
    url: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  - type: GitHubRepository
    url: https://github.com/grafana/loki
- aid: loki:loki-loki-api
  name: Loki Loki API
  description: The Loki API from Loki — 17 operation(s) for loki.
  humanURL: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  tags:
  - Loki
  properties:
  - type: OpenAPI
    url: openapi/loki-loki-api-openapi.yml
  - type: Documentation
    url: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  - type: GitHubRepository
    url: https://github.com/grafana/loki
- aid: loki:loki-metrics-api
  name: Loki Metrics API
  description: The Metrics API from Loki — 1 operation(s) for metrics.
  humanURL: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/loki-metrics-api-openapi.yml
  - type: Documentation
    url: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  - type: GitHubRepository
    url: https://github.com/grafana/loki
- aid: loki:loki-otlp-api
  name: Loki Otlp API
  description: The Otlp API from Loki — 1 operation(s) for otlp.
  humanURL: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  tags:
  - OTLP
  tags_raw:
  - Otlp
  properties:
  - type: OpenAPI
    url: openapi/loki-otlp-api-openapi.yml
  - type: Documentation
    url: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  - type: GitHubRepository
    url: https://github.com/grafana/loki
- aid: loki:loki-ready-api
  name: Loki Ready API
  description: The Ready API from Loki — 1 operation(s) for ready.
  humanURL: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  tags:
  - Ready
  properties:
  - type: OpenAPI
    url: openapi/loki-ready-api-openapi.yml
  - type: Documentation
    url: https://grafana.com/docs/loki/latest/reference/loki-http-api/
  - type: GitHubRepository
    url: https://github.com/grafana/loki
common:
- type: IssueTracker
  url: https://github.com/grafana/loki/issues
- type: Releases
  url: https://github.com/grafana/loki/releases
- type: CodeOfConduct
  url: https://github.com/grafana/loki/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/grafana/loki/blob/main/CONTRIBUTING.md
- type: License
  name: AGPL-3.0
  url: https://github.com/grafana/loki/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/loki-agentic-access.yml
- type: TrustCenter
  url: security/loki-trust-center.yml
- type: DomainSecurity
  url: security/loki-domain-security.yml
- type: Website
  url: https://grafana.com/oss/loki/
- type: Documentation
  url: https://grafana.com/docs/loki/latest/
- type: GitHubOrganization
  url: https://github.com/grafana
- type: Integrations
  url: https://grafana.com/integrations/
- url: https://grafana.com/blog/index.xml
  type: Blog
integrations:
- name: All visualization integrations
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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