Epsilon

Epsilon is a trading platform on the Robinhood Chain offering advanced order types such as limit, stop loss, DCA, and trailing stops for memecoins and real‑world assets. It provides a self‑custodial wallet, real‑time market analytics, AI‑driven trade assistance, and a REST API for quotes, order routing, placement, and market data. Users can earn rewards, access a developer dashboard, and integrate via SDKs in TypeScript and Python.

Epsilon publishes 2 API contracts indexed on the APIs.io network, including Public API API, and 1 more. Tagged areas include Trading, DeFi, Cryptocurrency, AdvancedOrders, and Robinhood Chain.

The Epsilon catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Epsilon’s developer surface includes authentication, changelog, API reference, documentation, engineering blog, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.9/100 developing Agent 41/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Trading DeFi CryptocurrencyAdvancedOrdersRobinhood Chain

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 46.9/100 · developing

Contract Quality 8.6 / 21

Developer Ergonomics 8.1 / 17

Access Clarity 7.2 / 17

Operational Transparency 6.3 / 11

Contract Governance 3.6 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 41/100 · agent ready

Machine-Readable Contract 18 / 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 8 / 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 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

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime (on an ambiguous tag, where no other regime matched), 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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/epsilon-exchange/"><img src="https://apis.io/badge/epsilon-exchange/card.svg" alt="Epsilon on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

6 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 40.7 — up to +14.8 composite points Ask about this →
Access Clarity scores 42.6 — up to +11.5 composite points Ask about this →
Developer Ergonomics scores 47.6 — up to +10.5 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/epsilon-exchange/apis.yml: open an issue on github.com/api-evangelist/epsilon-exchange 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 3

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.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Epsilon Public API

Public API for the Epsilon order engine on Robinhood Chain.

Epsilon Public API API

Public API for the Epsilon order engine on Robinhood Chain. Quotes, routes, market data, and EIP-712 signed order submission (limit, stop-loss, DCA, trailing). Authenticate with...

Epsilon API pricing

Prices published by Epsilon, read 2026-11-07 from github.com/pricing.

Plan	Price
Free	$0 USD
Team	$4 USD per user/ month
Enterprise	$21 USD per user/ month

Plan details, limits and sources →

Rate limits

Free Quote: 120 / min
Free Read: 600 / min
Free Order: 30 / min

All 6 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Epsilon Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Epsilon Rate Limits

6 limits

RATE LIMITS

Semantic Vocabularies 1

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

Epsilon Exchange Context

1 classes · 2 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Epsilon API Rules

42 rules · 39 error-severity 1 warn-severity 2 info-severity

SPECTRAL

Security Posture 2

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

Epsilon Authentication

1 scheme

SECURITY

Epsilon Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: epsilon-exchange
name: Epsilon
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
image: https://epsilon.exchange/opengraph-image?caeb741fdfaa91c3
description: Epsilon is a trading platform on the Robinhood Chain offering advanced order types such as limit, stop loss,
  DCA, and trailing stops for memecoins and real‑world assets. It provides a self‑custodial wallet, real‑time market analytics,
  AI‑driven trade assistance, and a REST API for quotes, order routing, placement, and market data. Users can earn rewards,
  access a developer dashboard, and integrate via SDKs in TypeScript and Python.
url: https://artifacts.apis.io/epsilon-exchange/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Trading
- DeFi
- Cryptocurrency
- AdvancedOrders
- Robinhood Chain
tags_raw:
- Trading
- DeFi
- Crypto
- AdvancedOrders
- RobinhoodChain
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/epsilon-exchange-rules.yml
- type: JSONLD
  url: json-ld/epsilon-exchange-context.jsonld
- type: Vocabulary
  url: vocabulary/epsilon-exchange-vocabulary.yml
- type: RateLimits
  url: rate-limits/epsilon-exchange-rate-limits.yml
- type: Plans
  url: plans/epsilon-exchange-plans-pricing.yml
- type: DataModel
  url: data-model/epsilon-exchange-data-model.yml
- type: Authentication
  url: authentication/epsilon-exchange-authentication.yml
- type: ErrorCatalog
  url: errors/epsilon-exchange-problem-types.yml
- type: Conformance
  url: conformance/epsilon-exchange-conformance.yml
- type: LLMsTxt
  url: llms/epsilon-exchange-llms.txt
- type: WellKnown
  url: well-known/epsilon-exchange-well-known.yml
- type: Hosts
  url: hosts/epsilon-exchange-hosts.yml
- type: Vendors
  url: vendors/epsilon-exchange-vendors.yml
- type: Packages
  url: packages/epsilon-exchange-packages.yml
- type: StatusPage
  url: https://developers.epsilon.exchange/status
- type: SDKs
  url: https://www.npmjs.com/package/@epsilon-exchange/sdk
- type: ChangeLog
  url: https://www.epsilon.exchange/changelog
- type: APIReference
  url: https://developers.epsilon.exchange/api/
- type: DomainSecurity
  url: security/epsilon-exchange-domain-security.yml
- type: Website
  url: https://epsilon.exchange/
- type: Documentation
  url: https://docs.epsilon.exchange/
- type: DeveloperPortal
  url: https://developers.epsilon.exchange/
- type: Blog
  url: https://www.epsilon.exchange/blog
- type: TermsOfService
  url: https://www.epsilon.exchange/terms
- type: PrivacyPolicy
  url: https://www.epsilon.exchange/privacy
apis:
- name: Epsilon Public API
  description: Public API for the Epsilon order engine on Robinhood Chain.
  humanURL: https://developers.epsilon.exchange/api/
  baseURL: https://api.epsilon.exchange
  aid: epsilon-exchange:epsilon-public-api
- aid: epsilon-exchange:epsilon-public-api-api
  name: Epsilon Public API API
  description: 'Public API for the Epsilon order engine on Robinhood Chain. Quotes, routes, market data, and EIP-712 signed
    order submission (limit,

    stop-loss, DCA, trailing). Authenticate with an API key (`X-API-Key: eps_...`) created via the developer surface; order
    authorization is the

    maker''s signature. Docs: h'
  humanURL: https://developers.epsilon.exchange/api/
  baseURL: https://api.epsilon.exchange
  properties:
  - type: OpenAPI
    url: openapi/_original/epsilon-exchange-api-openapi.json
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Epsilon API — frequently asked questions

Does Epsilon have an API?

Yes. APIs.io lists 2 APIs from Epsilon, including Epsilon Public API and Epsilon Public API API.

Is there an OpenAPI specification for the Epsilon API?

Yes. APIs.io indexes 1 OpenAPI specification for Epsilon, each linked for download from this page.

How do I authenticate with the Epsilon API?

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

How much does the Epsilon API cost?

Epsilon publishes its prices; its Free plan is $0 USD as of 2026-11-07. APIs.io lists 3 pricing plans for Epsilon, with each plan's price, limits and inclusions under Pricing on this page.

Is the Epsilon API ready for AI agents?

Epsilon has a Kin Score of 46.9 out of 100 (developing) and an Agent Readiness score of 41.2 (agent-ready), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/epsilon-exchange"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/epsilon-exchange/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/epsilon-exchange/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.