Crossmint

Crossmint is a Web3 platform offering APIs for wallets, NFT minting, checkout, payments, embedded checkout, and verifiable credentials. Supports server-managed wallets across EVM and Solana, fiat-on-ramp checkout, and credit-card-funded NFT purchases.

Crossmint publishes 7 APIs on the APIs.io network, including Balances API, NFTs API, Signatures API, and 4 more. Tagged areas include Web3, Wallets, NFT, Payments, and Checkout.

Crossmint’s developer surface includes authentication and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

27.3/100 thin ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaid

1 APIs

Web3 Wallets NFT Payments Checkout

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 27.3/100 · thin

Contract Quality 9.4 / 19

Developer Ergonomics 3.2 / 15

Access Clarity 2.4 / 15

Operational Transparency 0.8 / 10

Contract Governance 0.0 / 9

Discoverability 5.7 / 8

Regulatory Posture 4.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 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

Regulatory Posture applies to this provider. Its tags matched the Payments 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 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 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/crossmint: 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 12

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

Crossmint Wallets API

REST API to create and manage server-side custodial and non-custodial smart wallets across EVM and Solana, sign transactions, manage delegated permissions.

Crossmint Minting API

REST API to mint and manage NFTs on multiple chains, including collection creation, batch minting, and metadata management.

Crossmint Checkout API

REST API for hosted and headless checkout flows allowing credit-card and crypto purchases of NFTs.

Crossmint Verifiable Credentials API

REST API to issue, manage, and verify verifiable credentials anchored on chain.

Crossmint Headless Checkout (Order API)

REST Order API for fully headless on-chain commerce flows including fiat and crypto payment intents.

Crossmint Balances API

The Balances API from Crossmint — 1 operation(s) for balances.

Crossmint NFTs API

The NFTs API from Crossmint — 1 operation(s) for nfts.

Crossmint Signatures API

The Signatures API from Crossmint — 3 operation(s) for signatures.

Crossmint Signers API

The Signers API from Crossmint — 2 operation(s) for signers.

Crossmint Transactions API

The Transactions API from Crossmint — 3 operation(s) for transactions.

Crossmint Transfers API

The Transfers API from Crossmint — 2 operation(s) for transfers.

Crossmint Wallets API

The Wallets API from Crossmint — 2 operation(s) for wallets.

Scroll for all 12

Open Collections 9

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

API Collection

OPEN COLLECTION

Crossmint Wallets Balances API

OPEN COLLECTION

Crossmint Wallets Balances NFTs API

OPEN COLLECTION

Crossmint Wallets Balances Signatures API

OPEN COLLECTION

Crossmint Wallets Balances Signers API

OPEN COLLECTION

Crossmint Wallets Balances Transactions API

OPEN COLLECTION

Crossmint Wallets Balances Transfers API

OPEN COLLECTION

Crossmint Balances Wallets API

OPEN COLLECTION

Crossmint Wallets API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Crossmint Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Crossmint Rate Limits

1 limits

RATE LIMITS

FinOps 1

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

Crossmint Finops

FINOPS

Security Posture 3

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

Crossmint Authentication

apiKey · 1 scheme

SECURITY

Crossmint Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Crossmint Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Crossmint Agentic Access

18 operations · 8 acting

AGENTIC

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: crossmint
url: https://raw.githubusercontent.com/api-evangelist/crossmint/refs/heads/main/apis.yml
name: Crossmint
kind: company
description: Crossmint is a Web3 platform offering APIs for wallets, NFT minting, checkout, payments, embedded checkout, and
  verifiable credentials. Supports server-managed wallets across EVM and Solana, fiat-on-ramp checkout, and credit-card-funded
  NFT purchases.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/crossmint.png
tags:
- Web3
- Wallets
- NFT
- Payments
- Checkout
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- aid: crossmint:wallets-api
  name: Crossmint Wallets API
  description: REST API to create and manage server-side custodial and non-custodial smart wallets across EVM and Solana,
    sign transactions, manage delegated permissions.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - REST
  - Wallets
  - Smart Wallets
  properties:
  - type: Documentation
    url: https://docs.crossmint.com/wallets/introduction
- aid: crossmint:minting-api
  name: Crossmint Minting API
  description: REST API to mint and manage NFTs on multiple chains, including collection creation, batch minting, and metadata
    management.
  humanURL: https://docs.crossmint.com/minting/introduction
  baseURL: https://www.crossmint.com/api/2022-06-09
  tags:
  - REST
  - NFT
  - Minting
  properties:
  - type: Documentation
    url: https://docs.crossmint.com/minting/introduction
- aid: crossmint:checkout-api
  name: Crossmint Checkout API
  description: REST API for hosted and headless checkout flows allowing credit-card and crypto purchases of NFTs.
  humanURL: https://docs.crossmint.com/payments/introduction
  baseURL: https://www.crossmint.com/api/2022-06-09
  tags:
  - REST
  - Checkout
  - Payments
  properties:
  - type: Documentation
    url: https://docs.crossmint.com/payments/introduction
- aid: crossmint:credentials-api
  name: Crossmint Verifiable Credentials API
  description: REST API to issue, manage, and verify verifiable credentials anchored on chain.
  humanURL: https://docs.crossmint.com/verifiable-credentials/introduction
  baseURL: https://www.crossmint.com/api/v1-alpha1/credentials
  tags:
  - REST
  - Credentials
  - VC
  properties:
  - type: Documentation
    url: https://docs.crossmint.com/verifiable-credentials/introduction
- aid: crossmint:headless-checkout
  name: Crossmint Headless Checkout (Order API)
  description: REST Order API for fully headless on-chain commerce flows including fiat and crypto payment intents.
  humanURL: https://docs.crossmint.com/payments/headless/overview
  baseURL: https://www.crossmint.com/api/2022-06-09/orders
  tags:
  - REST
  - Order
  properties:
  - type: Documentation
    url: https://docs.crossmint.com/payments/headless/overview
- aid: crossmint:crossmint-balances-api
  name: Crossmint Balances API
  description: The Balances API from Crossmint — 1 operation(s) for balances.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - Balances
  properties:
  - type: OpenAPI
    url: openapi/crossmint-balances-api-openapi.yml
- aid: crossmint:crossmint-nfts-api
  name: Crossmint NFTs API
  description: The NFTs API from Crossmint — 1 operation(s) for nfts.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - NFT
  tags_raw:
  - NFTs
  properties:
  - type: OpenAPI
    url: openapi/crossmint-nfts-api-openapi.yml
- aid: crossmint:crossmint-signatures-api
  name: Crossmint Signatures API
  description: The Signatures API from Crossmint — 3 operation(s) for signatures.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - Signatures
  properties:
  - type: OpenAPI
    url: openapi/crossmint-signatures-api-openapi.yml
- aid: crossmint:crossmint-signers-api
  name: Crossmint Signers API
  description: The Signers API from Crossmint — 2 operation(s) for signers.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - Signers
  properties:
  - type: OpenAPI
    url: openapi/crossmint-signers-api-openapi.yml
- aid: crossmint:crossmint-transactions-api
  name: Crossmint Transactions API
  description: The Transactions API from Crossmint — 3 operation(s) for transactions.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - Transaction
  tags_raw:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/crossmint-transactions-api-openapi.yml
- aid: crossmint:crossmint-transfers-api
  name: Crossmint Transfers API
  description: The Transfers API from Crossmint — 2 operation(s) for transfers.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - Transfers
  properties:
  - type: OpenAPI
    url: openapi/crossmint-transfers-api-openapi.yml
- aid: crossmint:crossmint-wallets-api
  name: Crossmint Wallets API
  description: The Wallets API from Crossmint — 2 operation(s) for wallets.
  humanURL: https://docs.crossmint.com/wallets/introduction
  baseURL: https://staging.crossmint.com/api/2022-06-09 (staging) | https://www.crossmint.com/api/2022-06-09 (prod)
  tags:
  - Wallets
  properties:
  - type: OpenAPI
    url: openapi/crossmint-wallets-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/crossmint-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/crossmint-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/crossmint-domain-security.yml
- type: Authentication
  url: authentication/crossmint-authentication.yml
- type: GitHubOrganization
  url: https://github.com/crossmint
- type: LinkedIn
  url: https://www.linkedin.com/company/crossmint-io
- type: Website
  url: https://www.crossmint.com/
- type: Plans
  url: plans/crossmint-plans-pricing.yml
- type: RateLimits
  url: rate-limits/crossmint-rate-limits.yml
- type: FinOps
  url: finops/crossmint-finops.yml
- type: LlmsText
  url: https://docs.crossmint.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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