Chado Studio

Chado Studio (contact api@chado.studio) operates llama.box, a desktop-style hub for the Curve Finance ecosystem — dashboards, analytics and curated links for Curve, crvUSD, LlamaLend, YieldBasis, Convex, Stake DAO, Yearn and Resupply. Its one machine-readable surface is the crvUSD Yield Optimizer, a FastAPI service mounted at https://llama.box/yo that discovers crvUSD yield across scrvUSD, LlamaLend, Convex and StakeDAO on Ethereum, Arbitrum, Base, Optimism and Fraxtal, scores pool risk 0-100 and simulates rebalances. It publishes an OpenAPI 3.1.0 contract (10 operations) at /yo/openapi.json with Swagger UI and ReDoc, an A2A 0.2.5 agent card at /yo/.well-known/agent.json declaring four skills, and charges for the risk, rebalance and A2A calls per request through the x402 protocol in USDC on the Base Sepolia testnet. The hub itself serves an llms.txt and a robots.txt that allows every major AI crawler.

Chado Studio publishes 10 API contracts indexed on the APIs.io network, including A2a API, Access Log API, Best Yield API, and 7 more. Tagged areas include Agents, A2A, x402, DeFi, and Yield.

Chado Studio’s developer surface includes documentation, API reference, pricing, authentication, sandbox, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.5/100 thin ▬ flat Agent 30/100 agent ready Front door AI 3/6 light Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

4 published contracts

Agents A2A x402 DeFi YieldCurve FinancecrvUSD Stablecoins Risk Scoring Analytics Agent-Native

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 33.5/100 · thin

Contract Quality 7.6 / 19

Developer Ergonomics 5.6 / 15

Access Clarity 4.7 / 15

Operational Transparency 0.0 / 10

Contract Governance 1.6 / 9

Discoverability 5.9 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 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 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/llama-box: 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 →

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.

x402

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

APIs 10

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

crvUSD Yield Optimizer A2A Agent

Agent2Agent surface of the same service: an agent card at https://llama.box/yo/.well-known/agent.json (protocolVersion 0.2.5, version 1.1.0, provider "Chado Studio") declaring f...

Chado Studio A2a API

The A2a API from Chado Studio — 2 operation(s) for a2a.

Chado Studio Access Log API

The Access Log API from Chado Studio — 1 operation(s) for access log.

Chado Studio Best Yield API

The Best Yield API from Chado Studio — 1 operation(s) for best yield.

Chado Studio Health API

The Health API from Chado Studio — 1 operation(s) for health.

Chado Studio Pools API

The Pools API from Chado Studio — 1 operation(s) for pools.

Chado Studio Pricing API

The Pricing API from Chado Studio — 1 operation(s) for pricing.

Chado Studio Rebalance API

The Rebalance API from Chado Studio — 1 operation(s) for rebalance.

Chado Studio Risk Score API

The Risk Score API from Chado Studio — 1 operation(s) for risk score.

Chado Studio .well Known API

The .well Known API from Chado Studio — 1 operation(s) for .well known.

Scroll for all 10

Pricing Plans 1

Published pricing tiers and plan structures.

Llama Box Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Llama Box Rate Limits

0 limits

RATE LIMITS

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Llama Box Crvusd Yield Optimizer Overlay

10 actions · documentation · llama-box-crvusd-yield-optimizer-openapi.yml

GENERATED

Security Posture 2

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

Llama Box Authentication

apiKey · 2 schemes

SECURITY

Llama Box Domain Security

TLSv1.3

SECURITY

Agentic Access 1

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

Llama Box Agentic Access

10 operations · 3 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

WellKnown

LLMsTxt

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Conformance

Lifecycle

Access & Security 2

Authentication, authorization, and security posture

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

Pricing

Pricing

Plans

Plans

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

AgentCard

AgentCard

Source (apis.yml)

aid: llama-box
name: Chado Studio
description: Chado Studio (contact api@chado.studio) operates llama.box, a desktop-style hub for the Curve Finance ecosystem
  — dashboards, analytics and curated links for Curve, crvUSD, LlamaLend, YieldBasis, Convex, Stake DAO, Yearn and Resupply.
  Its one machine-readable surface is the crvUSD Yield Optimizer, a FastAPI service mounted at https://llama.box/yo that discovers
  crvUSD yield across scrvUSD, LlamaLend, Convex and StakeDAO on Ethereum, Arbitrum, Base, Optimism and Fraxtal, scores pool
  risk 0-100 and simulates rebalances. It publishes an OpenAPI 3.1.0 contract (10 operations) at /yo/openapi.json with Swagger
  UI and ReDoc, an A2A 0.2.5 agent card at /yo/.well-known/agent.json declaring four skills, and charges for the risk, rebalance
  and A2A calls per request through the x402 protocol in USDC on the Base Sepolia testnet. The hub itself serves an llms.txt
  and a robots.txt that allows every major AI crawler.
url: https://raw.githubusercontent.com/api-evangelist/llama-box/refs/heads/main/apis.yml
image: https://llama.box/og-cover.png
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-19 (local-v3; was a2a-registry harvest stub)
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Agents
- A2A
- x402
- DeFi
- Yield
- Curve Finance
- crvUSD
- Stablecoins
- Risk Scoring
- Analytics
- Agent-Native
tags_raw:
- Agents
- A2A
- x402
- DeFi
- Yield
- Curve Finance
- crvUSD
- Stablecoins
- Risk scoring
- Analytics
- Agent-native
- agent-native
apis:
- aid: llama-box:crvusd-yield-optimizer-a2a-agent
  name: crvUSD Yield Optimizer A2A Agent
  description: 'Agent2Agent surface of the same service: an agent card at https://llama.box/yo/.well-known/agent.json (protocolVersion
    0.2.5, version 1.1.0, provider "Chado Studio") declaring four skills — Best Yield Finder, Pool Discovery, Risk Assessment
    and Rebalance Advisor — that accept natural-language or structured DataPart input. The JSON-RPC 2.0 handler is POST https://llama.box/yo/a2a
    (message/send, tasks/get, tasks/cancel, plus legacy SendMessage/GetTask/CancelTask/ListTasks aliases) with an SSE message/stream
    twin at /yo/a2a/stream; both answered an unpaid probe with HTTP 402 and an x402 v2 PAYMENT-REQUIRED challenge for $0.01
    USDC on Base Sepolia (eip155:84532). The card''s own url (https://llama.box/yo) is not the RPC endpoint and 404s on GET
    and POST.'
  image: https://llama.box/og-cover.png
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo/a2a
  tags:
  - A2A
  - Agents
  - Agent-Native
  - x402
  tags_raw:
  - A2A
  - Agents
  - agent-native
  - x402
  properties:
  - type: AgentCard
    url: a2a/llama-box-a2a.yml
  - type: AgentCard
    name: A2A Agent Card (provider-hosted, legacy path under /yo)
    url: https://llama.box/yo/.well-known/agent.json
- aid: llama-box:llama-box-a2a-api
  name: Chado Studio A2a API
  description: The A2a API from Chado Studio — 2 operation(s) for a2a.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - A2A
  tags_raw:
  - A2a
  properties:
  - type: OpenAPI
    url: openapi/llama-box-a2a-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-access-log-api
  name: Chado Studio Access Log API
  description: The Access Log API from Chado Studio — 1 operation(s) for access log.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - Access Log
  properties:
  - type: OpenAPI
    url: openapi/llama-box-access-log-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-best-yield-api
  name: Chado Studio Best Yield API
  description: The Best Yield API from Chado Studio — 1 operation(s) for best yield.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - Best Yield
  properties:
  - type: OpenAPI
    url: openapi/llama-box-best-yield-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-health-api
  name: Chado Studio Health API
  description: The Health API from Chado Studio — 1 operation(s) for health.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/llama-box-health-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-pools-api
  name: Chado Studio Pools API
  description: The Pools API from Chado Studio — 1 operation(s) for pools.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - Pools
  properties:
  - type: OpenAPI
    url: openapi/llama-box-pools-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-pricing-api
  name: Chado Studio Pricing API
  description: The Pricing API from Chado Studio — 1 operation(s) for pricing.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - Pricing
  properties:
  - type: OpenAPI
    url: openapi/llama-box-pricing-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-rebalance-api
  name: Chado Studio Rebalance API
  description: The Rebalance API from Chado Studio — 1 operation(s) for rebalance.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - Rebalance
  properties:
  - type: OpenAPI
    url: openapi/llama-box-rebalance-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-risk-score-api
  name: Chado Studio Risk Score API
  description: The Risk Score API from Chado Studio — 1 operation(s) for risk score.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - Risk Score
  properties:
  - type: OpenAPI
    url: openapi/llama-box-risk-score-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
- aid: llama-box:llama-box-well-known-api
  name: Chado Studio .well Known API
  description: The .well Known API from Chado Studio — 1 operation(s) for .well known.
  humanURL: https://llama.box/yo/docs
  baseURL: https://llama.box/yo
  tags:
  - .well Known
  properties:
  - type: OpenAPI
    url: openapi/llama-box-well-known-api-openapi.yml
  - type: APIReference
    url: https://llama.box/yo/docs
  - type: Documentation
    url: https://llama.box/yo/redoc
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/llama-box-crvusd-yield-optimizer-overlay.yaml
- type: AgenticAccess
  url: agentic-access/llama-box-agentic-access.yml
- type: DomainSecurity
  url: security/llama-box-domain-security.yml
- type: Website
  url: https://llama.box/
- type: Documentation
  url: https://llama.box/yo/redoc
- type: APIReference
  url: https://llama.box/yo/docs
- type: Pricing
  url: https://llama.box/yo/api/pricing
- type: AgentCard
  url: a2a/llama-box-a2a.yml
- type: WellKnown
  url: well-known/llama-box-well-known.yml
- type: LLMsTxt
  url: llms/llama-box-llms.txt
- type: Authentication
  url: authentication/llama-box-authentication.yml
- type: Conventions
  url: conventions/llama-box-conventions.yml
- type: ErrorCatalog
  url: errors/llama-box-problem-types.yml
- type: DataModel
  url: data-model/llama-box-data-model.yml
- type: RateLimits
  url: rate-limits/llama-box-rate-limits.yml
- type: Plans
  url: plans/llama-box-plans-pricing.yml
- type: Sandbox
  url: sandbox/llama-box-sandbox.yml
- type: Conformance
  url: conformance/llama-box-conformance.yml
- type: Lifecycle
  url: lifecycle/llama-box-lifecycle.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 26
  pass: local-v3
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://llama.box/yo/.well-known/agent.json
  grade: near-conformant
  protocol_version: 0.2.5
  control: 404

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