Meltano

Meltano is an open-source, declarative, code-first data integration engine (ELT+) built on the open Singer standard. It lets data teams extract, load, transform, and test data across 600+ pre-built connectors sourced from Meltano Hub, managing entire pipelines as version-controlled code through the meltano CLI and a declarative meltano.yml project file. Meltano integrates with dbt for transformation and Elementary for data validation, and offers the Meltano Singer SDK for building custom taps and targets. It originated as a GitLab project and is backed by GV. Meltano exposes no public REST/HTTP API; it is a CLI-first DataOps platform.

Meltano is profiled on the APIs.io network. Tagged areas include Company, Enterprise, Data Integration, ELT, and Data Pipeline.

Meltano’s developer surface includes documentation, getting-started guide, engineering blog, pricing, support, CLI, changelog, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

25.8/100 emerging ▬ flat Agent 0/100 human only Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

0 APIs

Company Enterprise Data Integration ELT Data Pipeline Data Engineering Open Source DataOpsSinger

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 25.8/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 5.4 / 17

Operational Transparency 2.0 / 11

Contract Governance 0.5 / 10

Discoverability 4.7 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 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 0 / 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

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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/meltano: 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Data Integration (ELT connectors and data governance)	coverage	50.0	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Security Posture 1

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

Meltano Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

ChangeLogLink

ChangeLogLink

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: meltano
name: Meltano
description: Meltano is an open-source, declarative, code-first data integration engine (ELT+) built on the open Singer standard.
  It lets data teams extract, load, transform, and test data across 600+ pre-built connectors sourced from Meltano Hub, managing
  entire pipelines as version-controlled code through the meltano CLI and a declarative meltano.yml project file. Meltano
  integrates with dbt for transformation and Elementary for data validation, and offers the Meltano Singer SDK for building
  custom taps and targets. It originated as a GitLab project and is backed by GV. Meltano exposes no public REST/HTTP API;
  it is a CLI-first DataOps platform.
url: https://raw.githubusercontent.com/api-evangelist/meltano/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://meltano.com/meltano-logo.svg
x-type: company
x-source: vc-portfolio
x-backed-by:
- gv
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
x-docs-hosting: netlify
tags:
- Company
- Enterprise
- Data Integration
- ELT
- Data Pipeline
- Data Engineering
- Open Source
- DataOps
- Singer
tags_raw:
- Company
- Enterprise
- Data Integration
- ELT
- Data Pipelines
- Data Engineering
- Open Source
- DataOps
- Singer
- Open-Source
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://meltano.com
- type: DeveloperPortal
  url: https://docs.meltano.com
- type: Documentation
  url: https://docs.meltano.com
- type: GettingStarted
  url: https://docs.meltano.com/getting-started
- type: GitHubOrganization
  url: https://github.com/meltano
- type: Blog
  url: https://meltano.com/blog
- type: Pricing
  url: https://meltano.com/pricing
- type: Support
  url: https://meltano.com/slack
- type: TermsOfService
  url: https://meltano.com/terms-of-service
- type: PrivacyPolicy
  url: https://meltano.com/privacy-policy
- type: ChangeLogLink
  url: https://github.com/meltano/meltano/releases
- type: Packages
  url: packages/meltano-packages.yml
- type: SDKs
  url: packages/meltano-packages.yml
- type: CLI
  url: cli/meltano-cli.yml
- type: ChangeLog
  url: changelog/meltano-changelog.yml
- type: Lifecycle
  url: lifecycle/meltano-lifecycle.yml
- type: Conformance
  url: conformance/meltano-conformance.yml
- type: DomainSecurity
  url: security/meltano-domain-security.yml
- type: LLMsTxt
  url: llms/meltano-llms.txt
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 6
  pass: local-v1

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