AATOS

AATOS is a non‑custodial MCP for Stock Tokens on the Robinhood Chain (chain ID 4663). It enables agents to list, price, check liquidity and obtain unsigned plans that users sign on‑chain, charging about 10 bps in ETH. The service is not a brokerage and is unavailable to US persons. It offers free read‑only actions and paid quoting/execution, with detailed FAQs and pricing information.

AATOS is listed with 1 API on the APIs.io network. Tagged areas include Finance, Tokenization, MCP, Robinhood Chain, and Cryptocurrency.

AATOS’s developer surface includes authentication, engineering blog, pricing, support, and 6 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.0/100 emerging ▬ flat Agent 3/100 human only Heartbeat 40/100 slowing Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 API

Finance Tokenization MCP Robinhood Chain Cryptocurrency

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 16.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.6 / 17

Access Clarity 6.3 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 1.8 / 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 10 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

12 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 15.5 — up to +16.9 composite points
Operational Transparency scores 2.6 — up to +12.7 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/aatos-dev/apis.yml: open an issue on github.com/api-evangelist/aatos-dev 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 →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 1

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

AATOS API

AATOS provides a non‑custodial MCP for Stock Tokens on the Robinhood Chain, offering read‑only actions and paid quoting/execution via on‑chain payments.

AATOS API pricing

Prices published by AATOS. A free plan or tier is listed.

Plan	Price
Free / Discovery	Free
Pro	0.01 ETH per 30 days
Team	0.03 ETH per 30 days

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Aatos Dev Plans Pricing

3 plans

PLANS

Security Posture 2

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

Aatos Dev Authentication

1 scheme

SECURITY

Aatos Dev Domain Security

TLSv1.3

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

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 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: aatos-dev
name: AATOS
description: AATOS is a non‑custodial MCP for Stock Tokens on the Robinhood Chain (chain ID 4663). It enables agents to list,
  price, check liquidity and obtain unsigned plans that users sign on‑chain, charging about 10 bps in ETH. The service is
  not a brokerage and is unavailable to US persons. It offers free read‑only actions and paid quoting/execution, with detailed
  FAQs and pricing information.
url: https://artifacts.apis.io/aatos-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  probe_state: unreadable
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Finance
- Tokenization
- MCP
- Robinhood Chain
- Cryptocurrency
tags_raw:
- Finance
- Tokenization
- MCP
- RobinhoodChain
- Crypto
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://aatos.dev/brand/aatos-mark-on-dark.svg
common:
- type: Plans
  url: plans/aatos-dev-plans-pricing.yml
- type: Authentication
  url: authentication/aatos-dev-authentication.yml
- type: LLMsTxt
  url: llms/aatos-dev-llms.txt
- type: Hosts
  url: hosts/aatos-dev-hosts.yml
- type: DomainSecurity
  url: security/aatos-dev-domain-security.yml
- type: Website
  url: https://aatos.dev/
- type: Blog
  url: https://aatos.dev/blog/
- type: Pricing
  url: https://aatos.dev/api/access/pricing
- type: Support
  url: https://aatos.dev/faq
- type: GitHubOrganization
  url: https://github.com/tailoredtidings
apis:
- name: AATOS API
  description: AATOS provides a non‑custodial MCP for Stock Tokens on the Robinhood Chain, offering read‑only actions and
    paid quoting/execution via on‑chain payments.
  humanURL: https://aatos.dev/api/access/pricing
  aid: aatos-dev:aatos-api
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: No machine‑readable OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL contract is published despite the API being described
    in JSON pricing data.
  evidence:
  - url: https://aatos.dev/api/access/pricing
    status: 200
  checked: '2026-10-31'
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 11
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

AATOS API — frequently asked questions

Does AATOS have an API?

Yes. APIs.io lists 1 API from AATOS, including AATOS API.

How do I authenticate with the AATOS API?

AATOS uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Aatos Dev Authentication.

How much does the AATOS API cost?

AATOS publishes its prices; its Pro plan is 0.01 ETH per 30 days as of 2026-10-31. APIs.io lists 3 pricing plans for AATOS, with each plan's price, limits and inclusions under Pricing on this page.

Is the AATOS API ready for AI agents?

AATOS has a Kin Score of 16.0 out of 100 (emerging) and an Agent Readiness score of 2.5 (human-only), scored by API Evangelist on 2026-11-06.

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