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 is listed with 5 APIs on the APIs.io network, including Config API, Metrics API, and 3 more. Tagged areas include Logging, Observability, Open Source, and Grafana.

The Loki catalog on APIs.io includes 1 Spectral governance ruleset.

Loki’s developer surface includes documentation, engineering blog, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.2/100 thin ▬ flat Agent 19/100 agent aware self hosted · AGPL-3.0 Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

5 APIs

Logging Observability Open Source Grafana

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

SaaS Platform Operations Management

BC-4220

LokiOtlp

POST /loki/api/v1/push GET /loki/api/v1/query GET /loki/api/v1/tail POST /otlp/v1/logs

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 28.2/100 · thin

Contract Quality 5.5 / 16

Developer Ergonomics 1.5 / 13

Access Clarity 2.5 / 13

Operational Transparency 2.2 / 8

Contract Governance 1.1 / 8

Discoverability 2.9 / 7

Regulatory Posture 0.7 / 15

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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 11.9 — up to +17.6 composite points Ask about this →
Contract Quality scores 33.7 — up to +16.6 composite points Ask about this →
Access Clarity scores 19.1 — up to +16.2 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/loki/apis.yml: open an issue on github.com/api-evangelist/loki to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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 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 6

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

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

Loki API pricing

Not yet checked against Loki's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Loki's documentation. All 5 limits →

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

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

Loki

2 quoted statements, read from Loki's own page on 2026-11-09.

TERMS

Data License 1

How its data and outputs may be reused, quoted from its own terms.

Loki

1 quoted statement, read from Loki's own page on 2026-11-09.

LICENSE

FinOps 1

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

Loki Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Loki API Rules

33 rules · 31 error-severity 1 warn-severity 1 info-severity

SPECTRAL

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 (API Evangelist recommendations) 1

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

Loki Agentic Access

27 operations · 7 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 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

IssueTracker

IssueTracker

Releases

Releases

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

License

UsageTerms

DataLicense

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

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: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  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
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/loki/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-09-16'
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 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: Plans
  url: plans/loki-plans-pricing.yml
- type: RateLimits
  url: rate-limits/loki-rate-limits.yml
- type: FinOps
  url: finops/loki-finops.yml
- type: CapabilityMap
  url: capabilities/loki-capability-edges.yml
  name: Loki Business Capability Map
- 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
- type: UsageTerms
  url: terms/loki-terms-of-service.yml
- type: DataLicense
  url: data-license/loki-data-license.yml
integrations:
- name: All visualization integrations
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Loki API — frequently asked questions

Does Loki have an API?

Yes. APIs.io lists 5 APIs from Loki, including Loki Config API, Loki API and Loki Metrics API, and 2 more.

Is there an OpenAPI specification for the Loki API?

Yes. APIs.io indexes 5 OpenAPI specifications for Loki, each linked for download from this page.

How much does the Loki API cost?

APIs.io lists 3 pricing plans for Loki, with each plan's price, limits and inclusions under Pricing on this page.

Is the Loki API ready for AI agents?

Loki has a Kin Score of 28.2 out of 100 (thin) and an Agent Readiness score of 18.9 (agent-aware), scored by API Evangelist on 2026-11-13.

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Tools for providers

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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