Alto

Alto provides a platform that enables private wealth advisors, financial institutions, issuers, and individual investors to access private market investments—such as private equity, venture capital, real estate, and infrastructure—through self‑directed retirement accounts (IRAs). The service includes a curated marketplace, a private deal room for retirement‑capital funded deals, and infrastructure for enterprises to embed retirement‑account investing. Alto operates as a chartered trust company and registered broker‑dealer to facilitate compliance and custody for these alternative allocations.

Alto is profiled on the APIs.io network. Tagged areas include Private Markets, Retirement Accounts, IRA, Wealth Advisors, and Issuers.

Alto’s developer surface includes support, pricing, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
17.5/100 emerging Agent 3/100 human only Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
0 APIs
Private MarketsRetirement AccountsIRAWealth AdvisorsIssuersSelf-Directed InvestingAlternative Investments

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 17.5/100 · emerging
Contract Quality 0.0 / 21
Developer Ergonomics 0.8 / 17
Access Clarity 8.6 / 17
Operational Transparency 1.7 / 11
Contract Governance 0.0 / 10
Discoverability 3.9 / 9
Regulatory Posture 2.1 / 15
Agent readiness — 3/100 · 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 4 / 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/alto: 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 →

Pricing Plans 1

Published pricing tiers and plan structures.

Alto Plans Pricing

2 plans

PLANS

Security Posture 1

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

Alto Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Access & Security 2

Authentication, authorization, and security posture

SecurityTxt
SecurityTxt
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Pricing
Pricing

Company 2

The organization behind the API

Newsroom
Newsroom
 Website
Website

Other 2

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: alto
name: Alto
description: Alto provides a platform that enables private wealth advisors, financial institutions, issuers, and individual
  investors to access private market investments—such as private equity, venture capital, real estate, and infrastructure—through
  self‑directed retirement accounts (IRAs). The service includes a curated marketplace, a private deal room for retirement‑capital
  funded deals, and infrastructure for enterprises to embed retirement‑account investing. Alto operates as a chartered trust
  company and registered broker‑dealer to facilitate compliance and custody for these alternative allocations.
url: https://raw.githubusercontent.com/api-evangelist/alto/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-24 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-09-24'
modified: '2026-09-24'
tags:
- Private Markets
- Retirement Accounts
- IRA
- Wealth Advisors
- Issuers
- Self-Directed Investing
- Alternative Investments
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: LLMsTxt
  url: llms/alto-llms.txt
- type: Plans
  url: plans/alto-plans-pricing.yml
- type: SecurityTxt
  url: well-known/alto-status-security.txt
- type: WellKnown
  url: well-known/alto-well-known.yml
- type: Hosts
  url: hosts/alto-hosts.yml
- type: Vendors
  url: vendors/alto-vendors.yml
- type: TermsOfService
  url: https://www.altoira.com/terms-of-service
- type: Support
  url: https://www.altoira.com/help-center
- type: StatusPage
  url: https://status.altoira.com/
- type: PrivacyPolicy
  url: https://www.altoira.com/privacy-policy
- type: Pricing
  url: https://www.altoira.com/pricing
- type: Newsroom
  url: https://www.altoira.com/news
- type: DomainSecurity
  url: security/alto-domain-security.yml
- type: Website
  url: https://www.altoira.com/
apis: []
x-coverage:
  state: none
  reason: no-developer-program
  method: derived
  generated: '2026-09-24'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company publishes no developer documentation host and no machine-readable contract on its own domain
x-enrichment:
  date: '2026-09-24'
  status: enriched
  artifacts_added: 10
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local

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