Meld.io

Meld.io provides a modern data integration platform that enables businesses to connect, transform, and orchestrate data flows across a wide variety of sources and destinations. The platform offers real-time streaming, batch processing, and powerful transformation capabilities, all accessible via a robust RESTful API. Meld.io focuses on security, scalability, and ease of use, allowing developers to build data pipelines quickly while maintaining compliance with industry standards. With extensive documentation, SDKs, and support, Meld.io aims to simplify complex data integration challenges for enterprises of all sizes.

Meld.io publishes 2 API contracts indexed on the APIs.io network: Headless API and Retail Ramp API. Tagged areas include Data Integration, FinTech, API Platform, Stablecoin, and Digital Assets.

The Meld.io catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

Meld.io’s developer surface includes sandbox, authentication, documentation, API reference, getting-started guide, support, engineering blog, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.0/100 developing Agent 68/100 agent native Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract

Data IntegrationFinTechAPI PlatformStablecoinDigital Assets Enterprise

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 46.0/100 · developing

Contract Quality 14.4 / 21

Developer Ergonomics 10.9 / 17

Access Clarity 5.4 / 17

Operational Transparency 0.9 / 11

Contract Governance 2.2 / 10

Discoverability 4.1 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 68/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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/.

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

Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Agent Skills +5 pts — skills artifact present, graded by who authored it
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
Consent & Bot Identity +3 pts — common[].type includes AIPREF, ContentSignal, WebBotAuth, or HTTPMessageSignatures

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

Access Clarity scores 31.6 — up to +13.7 composite points
Operational Transparency scores 7.9 — up to +12.0 composite points
Contract Governance scores 22.0 — up to +9.4 composite points

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.

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/meld/apis.yml: open an issue on github.com/api-evangelist/meld 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 →

APIs 2

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

Meld.io Headless API

The Headless API from Meld.io — 4 operation(s) for headless.

Meld.io Retail Ramp API

The Retail Ramp API from Meld.io — 5 operation(s) for retail ramp.

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Meld Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Meld Context

118 classes · 219 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Meld.io API Rules

16 rules · 14 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Meld Authentication

1 scheme

SECURITY

Meld Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Meld Agentic Access

9 operations · 5 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Sandbox

Sandbox

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Idempotency

Conventions

Lifecycle

ErrorCatalog

Conformance

Scroll for all 10

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: meld
name: Meld.io
image: https://meld.io/images/meld-icon-wordmark.png
description: Meld.io provides a modern data integration platform that enables businesses to connect, transform, and orchestrate
  data flows across a wide variety of sources and destinations. The platform offers real-time streaming, batch processing,
  and powerful transformation capabilities, all accessible via a robust RESTful API. Meld.io focuses on security, scalability,
  and ease of use, allowing developers to build data pipelines quickly while maintaining compliance with industry standards.
  With extensive documentation, SDKs, and support, Meld.io aims to simplify complex data integration challenges for enterprises
  of all sizes.
url: https://raw.githubusercontent.com/api-evangelist/meld/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-21 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-21'
modified: '2026-10-21'
tags:
- Data Integration
- FinTech
- API Platform
- Stablecoin
- Digital Assets
- Enterprise
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/meld-agentic-access.yml
- type: Spectral
  url: rules/meld-rules.yml
- type: JSONLD
  url: json-ld/meld-context.jsonld
- type: Vocabulary
  url: vocabulary/meld-vocabulary.yml
- type: Webhooks
  url: asyncapi/meld-webhooks.yml
- type: DataModel
  url: data-model/meld-data-model.yml
- type: Idempotency
  url: conventions/meld-conventions.yml
- type: Conventions
  url: conventions/meld-conventions.yml
- type: Sandbox
  url: sandbox/meld-sandbox.yml
- type: Authentication
  url: authentication/meld-authentication.yml
- type: Lifecycle
  url: lifecycle/meld-lifecycle.yml
- type: ErrorCatalog
  url: errors/meld-problem-types.yml
- type: Conformance
  url: conformance/meld-conformance.yml
- type: LLMsTxt
  url: llms/meld-llms.txt
- type: AgentCard
  url: a2a/meld-a2a.yml
- type: WellKnown
  url: well-known/meld-well-known.yml
- type: Hosts
  url: hosts/meld-hosts.yml
- type: Vendors
  url: vendors/meld-vendors.yml
- type: DomainSecurity
  url: security/meld-domain-security.yml
- type: Website
  url: https://www.meld.io/
- type: DeveloperPortal
  url: https://www.meld.io/
- type: Documentation
  url: https://docs.meld.io/
- type: APIReference
  url: https://docs.meld.io/docs/meld-api/
- type: GettingStarted
  url: https://docs.meld.io/docs/meld-api/getting-started
- type: Support
  url: https://www.meld.io/contact?type=general
- type: Blog
  url: https://www.meld.io/blog
- type: TermsOfService
  url: https://www.meld.io/policy/terms-of-service
- type: PrivacyPolicy
  url: https://www.meld.io/policy/privacy-policy
- type: Pricing
  url: https://www.meld.io/partner-application
apis:
- aid: meld:meld-headless-api
  name: Meld.io Headless API
  description: The Headless API from Meld.io — 4 operation(s) for headless.
  tags:
  - Headless
  properties:
  - type: OpenAPI
    url: openapi/meld-headless-api-openapi.yml
- aid: meld:meld-retail-ramp-api
  name: Meld.io Retail Ramp API
  description: The Retail Ramp API from Meld.io — 5 operation(s) for retail ramp.
  tags:
  - Retail Ramp
  properties:
  - type: OpenAPI
    url: openapi/meld-retail-ramp-api-openapi.yml
x-enrichment:
  date: '2026-10-21'
  status: enriched
  artifacts_added: 31
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Meld.io API — frequently asked questions

Does Meld.io have an API?

Yes. APIs.io lists 2 APIs from Meld.io, including Meld.io Headless API and Meld.io Retail Ramp API.

Is there an OpenAPI specification for the Meld.io API?

Yes. APIs.io indexes 2 OpenAPI specifications for Meld.io, each linked for download from this page.

How do I authenticate with the Meld.io API?

Meld.io documents its authentication (1 scheme). The details are profiled on APIs.io as Meld Authentication.

Is the Meld.io API ready for AI agents?

Meld.io has a Kin Score of 46.0 out of 100 (developing) and an Agent Readiness score of 67.5 (agent-native), scored by API Evangelist on 2026-10-31.

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