April

April (aPriori, apr.io) is a MEV-powered liquid staking protocol on the Monad blockchain. Users stake MON tokens through aPriori's self-custodial staking vault and receive aprMON, a reward-bearing liquid staking token that accrues proof-of-stake plus MEV yield and can be used across Monad DeFi while retaining full custody. The protocol also operates Swapr (a DEX aggregator), an order-flow segmentation and MEV infrastructure layer, and the $APR token with an APR Boost rewards program. aPriori is documented on GitBook with an introduction, a Monad testnet guide, a MON faucet guide, and a smart-contract integration reference; it is a smart-contract protocol rather than a keyed REST API. Surfaced into the API Evangelist network as a crypto portfolio lead.

April is profiled on the APIs.io network. Tagged areas include Company, Crypto, Blockchain, DeFi, and Liquid Staking.

April’s developer surface includes documentation, getting-started guide, engineering blog, signup flow, sandbox, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

15.7/100 emerging ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-10-03 · rubric v0.23.0

0 APIs

Company Crypto Blockchain DeFi Liquid Staking Monad MEV Staking Web3

Kin Score

Kin Score How this is scored →
scored 2026-10-03 · rubric v0.23.0

Composite quality — 15.7/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.7 / 9

Regulatory Posture 2.1 / 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/april: 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 →

Security Posture 1

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

April Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Sandbox

Sandbox

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Roadmap

Roadmap

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Blog

Blog

Careers

Careers

Other 1

Properties that don't map to a standard resource type

Whitepaper

Whitepaper

Source (apis.yml)

aid: april
name: April
description: April (aPriori, apr.io) is a MEV-powered liquid staking protocol on the Monad blockchain. Users stake MON tokens
  through aPriori's self-custodial staking vault and receive aprMON, a reward-bearing liquid staking token that accrues proof-of-stake
  plus MEV yield and can be used across Monad DeFi while retaining full custody. The protocol also operates Swapr (a DEX aggregator),
  an order-flow segmentation and MEV infrastructure layer, and the $APR token with an APR Boost rewards program. aPriori is
  documented on GitBook with an introduction, a Monad testnet guide, a MON faucet guide, and a smart-contract integration
  reference; it is a smart-contract protocol rather than a keyed REST API. Surfaced into the API Evangelist network as a crypto
  portfolio lead.
url: https://raw.githubusercontent.com/api-evangelist/april/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
- qed-investors
x-tier: stub
x-tier-reason: portfolio-lead
x-identity-note: apis.yml website apr.io resolves to aPriori (aprMON MEV liquid staking on Monad), a crypto protocol. QED
  Investors' portfolio company named "April" is a separate embedded-tax platform (getapril.com); the two were conflated during
  stub generation. This repo is enriched for the apr.io / aPriori entity.
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:
  - url: https://www.apr.io/
    status: 307
    note: declared website redirects to https://www.capricorn.tech/ — a different registrable domain (apr.io -> capricorn.tech),
      possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
x-docs-platform: gitbook
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-09-19
tags:
- Company
- Crypto
- Blockchain
- DeFi
- Liquid Staking
- Monad
- MEV
- Staking
- Web3
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://www.apr.io/opengraph-image.jpg
common:
- type: Website
  url: https://www.apr.io/
- type: Documentation
  url: https://aprlabs.gitbook.io/apriori-docs
  name: aPriori Docs (GitBook)
- type: GettingStarted
  url: https://apriori-docs.gitbook.io/apriori-docs/introduction-to-apriori
  name: Introduction to aPriori
- type: Roadmap
  url: https://apriori-docs.gitbook.io/apriori-docs/growth/roadmap
  name: Roadmap
- type: Blog
  url: https://0xapr.substack.com/
  name: aPriori Substack
- type: SignUp
  url: https://stake.apr.io/
  name: aPriori Staking App
- type: TermsOfService
  url: https://www.notion.so/apriorimev/aPriori-Network-Inc-Terms-of-Use-7079e2f8b4a24e6daf52141090fb15ea
- type: PrivacyPolicy
  url: https://www.notion.so/apriorimev/aPriori-Network-Inc-Privacy-Policy-9792521a7be44bcb8fb8e850980c4343
- type: Whitepaper
  url: https://www.apr.io/whitepaper.pdf
  name: MiCA White Paper aPriori (APR) v1.0
- type: Careers
  url: https://job-boards.greenhouse.io/apr
- type: Sandbox
  url: sandbox/april-sandbox.yml
- type: LLMsTxt
  url: llms/april-llms.txt
- type: DomainSecurity
  url: security/april-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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