Scro Orphan Desk

Scro Orphan Desk is a machine-only "Intent Echo resurrection desk" served from dualregistry.dev and operated, by its own account, as an AI agent desk for an individual (the operator named in its agent card); the legacy host orphan-desk-echo.vercel.app serves the same bytes. It indexes expired zero-fill on-chain swap intents (CoW Protocol orders and Across deposits on Ethereum, Arbitrum and Base) as "Resurrection Echoes", publishes the open book free as JSON (index.json, stats.json, fill_hint.json, PROMO.json, ORPHANDUST.json) with the executable legs sealed, and sells the unsealed echo to agents through an x402 v1 HTTP 402 paywall — a finder's fee in basis points settled in USDC on Base (USDT on BSC and both on Ethereum accepted at settlement) to one published receive wallet, or a flat $0.50 "OrphanDust" unlock credit. A small OBO fee-negotiation API (quote, counter, settle, structured feedback) sits beside it. Every surface is machine-first: a served OpenAPI 3.0.3 stub (7 operations), an A2A 0.3.0 agent card at the canonical well-known path (conformant in shape, though it advertises no JSON-RPC A2A endpoint), ai-plugin.json, llms.txt, an x402 discovery document, a JSON Schema for fee quotes, and an "mcp.json" that is a tool manifest rather than an MCP server. There is no signup, no OAuth, no SDK, no terms or privacy page, and — by design — no human support channel.

Scro Orphan Desk publishes 7 API contracts indexed on the APIs.io network, including Echo API, Index.json API, Orphandust API, and 4 more. Tagged areas include AI Agents, x402, A2A, DeFi, and Crypto.

Scro Orphan Desk’s developer surface includes documentation, API reference, getting-started guide, pricing, authentication, code examples, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.6/100 thin ▬ flat Agent 31/100 agent ready saas Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

2 published contracts

AI Agents x402 A2A DeFi Crypto Stablecoins PaymentsIntent TradingMachine EconomyAgent-Native

Kin Score

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

Composite quality — 33.6/100 · thin

Contract Quality 8.5 / 19

Developer Ergonomics 6.3 / 15

Access Clarity 4.7 / 15

Operational Transparency 0.5 / 10

Contract Governance 1.6 / 9

Discoverability 4.6 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 31/100 · 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 7 / 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 Payments 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/dualregistry-dev: 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 7

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

Scro Orphan Desk A2A agent card

An A2A 0.3.0 agent card served at https://dualregistry.dev/.well-known/agent-card.json (and byte-identical at /agent-card.json, on www. and on the legacy Vercel host) that doubl...

Scro Orphan Desk Echo API

The Echo API from Scro Orphan Desk — 1 operation(s) for echo.

Scro Orphan Desk Index.json API

The Index.json API from Scro Orphan Desk — 1 operation(s) for index.json.

Scro Orphan Desk Orphandust API

The Orphandust API from Scro Orphan Desk — 1 operation(s) for orphandust.

Scro Orphan Desk Quote Fee API

The Quote Fee API from Scro Orphan Desk — 1 operation(s) for quote fee.

Scro Orphan Desk Settle Fee API

The Settle Fee API from Scro Orphan Desk — 1 operation(s) for settle fee.

Scro Orphan Desk Stats.json API

The Stats.json API from Scro Orphan Desk — 1 operation(s) for stats.json.

Scroll for all 7

Pricing Plans 1

Published pricing tiers and plan structures.

Dualregistry Dev Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Dualregistry Dev 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.

Dualregistry Dev Openapi Overlay

9 actions · documentation · dualregistry-dev-openapi.json

GENERATED

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Orphan Desk OBO fee quote / counter

0 properties

JSON SCHEMA

Security Posture 2

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

Dualregistry Dev Authentication

none/x402-payment-proof · 3 schemes

SECURITY

Dualregistry Dev Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Dualregistry Dev Agentic Access

7 operations · 3 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

JSONSchema

JSONSchema

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

WellKnown

AgentSkill

AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Conformance

ErrorCatalog

Lifecycle

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SourceCode

SourceCode

Examples

Examples

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

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 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Overlay

Overlay

AITransparency

AITransparency

Source (apis.yml)

aid: dualregistry-dev
name: Scro Orphan Desk
description: 'Scro Orphan Desk is a machine-only "Intent Echo resurrection desk" served from dualregistry.dev and operated,
  by its own account, as an AI agent desk for an individual (the operator named in its agent card); the legacy host orphan-desk-echo.vercel.app
  serves the same bytes. It indexes expired zero-fill on-chain swap intents (CoW Protocol orders and Across deposits on Ethereum,
  Arbitrum and Base) as "Resurrection Echoes", publishes the open book free as JSON (index.json, stats.json, fill_hint.json,
  PROMO.json, ORPHANDUST.json) with the executable legs sealed, and sells the unsealed echo to agents through an x402 v1 HTTP
  402 paywall — a finder''s fee in basis points settled in USDC on Base (USDT on BSC and both on Ethereum accepted at settlement)
  to one published receive wallet, or a flat $0.50 "OrphanDust" unlock credit. A small OBO fee-negotiation API (quote, counter,
  settle, structured feedback) sits beside it. Every surface is machine-first: a served OpenAPI 3.0.3 stub (7 operations),
  an A2A 0.3.0 agent card at the canonical well-known path (conformant in shape, though it advertises no JSON-RPC A2A endpoint),
  ai-plugin.json, llms.txt, an x402 discovery document, a JSON Schema for fee quotes, and an "mcp.json" that is a tool manifest
  rather than an MCP server. There is no signup, no OAuth, no SDK, no terms or privacy page, and — by design — no human support
  channel.'
url: https://raw.githubusercontent.com/api-evangelist/dualregistry-dev/refs/heads/main/apis.yml
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: 'Full local enrichment pass 2026-09-19 (was: stub / harvest).'
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - manhatton31-svg/orphan-desk-source
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- AI Agents
- x402
- A2A
- DeFi
- Crypto
- Stablecoins
- Payments
- Intent Trading
- Machine Economy
- Agent-Native
tags_raw:
- ai-agents
- x402
- a2a
- defi
- crypto
- stablecoins
- payments
- intent-trading
- machine-economy
- agent-native
apis:
- aid: dualregistry-dev:a2a-agent
  name: Scro Orphan Desk A2A agent card
  description: 'An A2A 0.3.0 agent card served at https://dualregistry.dev/.well-known/agent-card.json (and byte-identical
    at /agent-card.json, on www. and on the legacy Vercel host) that doubles as an ERC-8004 off-chain registration file. It
    declares 11 skills (list_echoes, stats, resurrect, quote_fee, counter_fee, settle_fee, fill_hint, redeem, feedback, orphandust,
    buy_unlock), a capabilities object, protocolVersion 0.3.0 and default JSON modes, and it grades conformant on the A2A
    1.0.0 hard checks — but its url is the site root, which serves index.json and answers POST with 405: the card is a discovery
    document for the HTTP+x402 API, not a JSON-RPC A2A door.'
  humanURL: https://dualregistry.dev/llms.txt
  tags:
  - A2A
  - AI Agents
  - Agent-Native
  tags_raw:
  - a2a
  - ai-agents
  - agent-native
  properties:
  - type: AgentCard
    url: a2a/dualregistry-dev-a2a.yml
  - type: AgentCard
    name: Agent card (provider-hosted, canonical path)
    url: https://dualregistry.dev/.well-known/agent-card.json
  - type: Documentation
    url: https://dualregistry.dev/llms.txt
- aid: dualregistry-dev:dualregistry-dev-echo-api
  name: Scro Orphan Desk Echo API
  description: The Echo API from Scro Orphan Desk — 1 operation(s) for echo.
  humanURL: https://dualregistry.dev/llms.txt
  tags:
  - Echo
  properties:
  - type: OpenAPI
    url: openapi/dualregistry-dev-echo-api-openapi.yml
  - type: Documentation
    url: https://dualregistry.dev/llms.txt
  - type: GettingStarted
    url: https://dualregistry.dev/AGENT.md
  - type: JSONSchema
    url: json-schema/dualregistry-dev-fee-quote.schema.json
  - type: Authentication
    url: authentication/dualregistry-dev-authentication.yml
  - type: Conventions
    url: conventions/dualregistry-dev-conventions.yml
  - type: ErrorCatalog
    url: errors/dualregistry-dev-problem-types.yml
  - type: DataModel
    url: data-model/dualregistry-dev-data-model.yml
  - type: Examples
    url: examples/dualregistry-dev-examples.yml
  - type: RateLimits
    url: rate-limits/dualregistry-dev-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/dualregistry-dev-lifecycle.yml
  - type: ToolCrosswalk
    url: mcp/dualregistry-dev-tool-crosswalk.yml
- aid: dualregistry-dev:dualregistry-dev-index-json-api
  name: Scro Orphan Desk Index.json API
  description: The Index.json API from Scro Orphan Desk — 1 operation(s) for index.json.
  humanURL: https://dualregistry.dev/llms.txt
  tags:
  - Index.json
  properties:
  - type: OpenAPI
    url: openapi/dualregistry-dev-index-json-api-openapi.yml
  - type: Documentation
    url: https://dualregistry.dev/llms.txt
  - type: GettingStarted
    url: https://dualregistry.dev/AGENT.md
  - type: JSONSchema
    url: json-schema/dualregistry-dev-fee-quote.schema.json
  - type: Authentication
    url: authentication/dualregistry-dev-authentication.yml
  - type: Conventions
    url: conventions/dualregistry-dev-conventions.yml
  - type: ErrorCatalog
    url: errors/dualregistry-dev-problem-types.yml
  - type: DataModel
    url: data-model/dualregistry-dev-data-model.yml
  - type: Examples
    url: examples/dualregistry-dev-examples.yml
  - type: RateLimits
    url: rate-limits/dualregistry-dev-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/dualregistry-dev-lifecycle.yml
  - type: ToolCrosswalk
    url: mcp/dualregistry-dev-tool-crosswalk.yml
- aid: dualregistry-dev:dualregistry-dev-orphandust-api
  name: Scro Orphan Desk Orphandust API
  description: The Orphandust API from Scro Orphan Desk — 1 operation(s) for orphandust.
  humanURL: https://dualregistry.dev/llms.txt
  tags:
  - Orphandust
  properties:
  - type: OpenAPI
    url: openapi/dualregistry-dev-orphandust-api-openapi.yml
  - type: Documentation
    url: https://dualregistry.dev/llms.txt
  - type: GettingStarted
    url: https://dualregistry.dev/AGENT.md
  - type: JSONSchema
    url: json-schema/dualregistry-dev-fee-quote.schema.json
  - type: Authentication
    url: authentication/dualregistry-dev-authentication.yml
  - type: Conventions
    url: conventions/dualregistry-dev-conventions.yml
  - type: ErrorCatalog
    url: errors/dualregistry-dev-problem-types.yml
  - type: DataModel
    url: data-model/dualregistry-dev-data-model.yml
  - type: Examples
    url: examples/dualregistry-dev-examples.yml
  - type: RateLimits
    url: rate-limits/dualregistry-dev-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/dualregistry-dev-lifecycle.yml
  - type: ToolCrosswalk
    url: mcp/dualregistry-dev-tool-crosswalk.yml
- aid: dualregistry-dev:dualregistry-dev-quote-fee-api
  name: Scro Orphan Desk Quote Fee API
  description: The Quote Fee API from Scro Orphan Desk — 1 operation(s) for quote fee.
  humanURL: https://dualregistry.dev/llms.txt
  tags:
  - Quote Fee
  properties:
  - type: OpenAPI
    url: openapi/dualregistry-dev-quote-fee-api-openapi.yml
  - type: Documentation
    url: https://dualregistry.dev/llms.txt
  - type: GettingStarted
    url: https://dualregistry.dev/AGENT.md
  - type: JSONSchema
    url: json-schema/dualregistry-dev-fee-quote.schema.json
  - type: Authentication
    url: authentication/dualregistry-dev-authentication.yml
  - type: Conventions
    url: conventions/dualregistry-dev-conventions.yml
  - type: ErrorCatalog
    url: errors/dualregistry-dev-problem-types.yml
  - type: DataModel
    url: data-model/dualregistry-dev-data-model.yml
  - type: Examples
    url: examples/dualregistry-dev-examples.yml
  - type: RateLimits
    url: rate-limits/dualregistry-dev-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/dualregistry-dev-lifecycle.yml
  - type: ToolCrosswalk
    url: mcp/dualregistry-dev-tool-crosswalk.yml
- aid: dualregistry-dev:dualregistry-dev-settle-fee-api
  name: Scro Orphan Desk Settle Fee API
  description: The Settle Fee API from Scro Orphan Desk — 1 operation(s) for settle fee.
  humanURL: https://dualregistry.dev/llms.txt
  tags:
  - Settle Fee
  properties:
  - type: OpenAPI
    url: openapi/dualregistry-dev-settle-fee-api-openapi.yml
  - type: Documentation
    url: https://dualregistry.dev/llms.txt
  - type: GettingStarted
    url: https://dualregistry.dev/AGENT.md
  - type: JSONSchema
    url: json-schema/dualregistry-dev-fee-quote.schema.json
  - type: Authentication
    url: authentication/dualregistry-dev-authentication.yml
  - type: Conventions
    url: conventions/dualregistry-dev-conventions.yml
  - type: ErrorCatalog
    url: errors/dualregistry-dev-problem-types.yml
  - type: DataModel
    url: data-model/dualregistry-dev-data-model.yml
  - type: Examples
    url: examples/dualregistry-dev-examples.yml
  - type: RateLimits
    url: rate-limits/dualregistry-dev-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/dualregistry-dev-lifecycle.yml
  - type: ToolCrosswalk
    url: mcp/dualregistry-dev-tool-crosswalk.yml
- aid: dualregistry-dev:dualregistry-dev-stats-json-api
  name: Scro Orphan Desk Stats.json API
  description: The Stats.json API from Scro Orphan Desk — 1 operation(s) for stats.json.
  humanURL: https://dualregistry.dev/llms.txt
  tags:
  - Stats.json
  properties:
  - type: OpenAPI
    url: openapi/dualregistry-dev-stats-json-api-openapi.yml
  - type: Documentation
    url: https://dualregistry.dev/llms.txt
  - type: GettingStarted
    url: https://dualregistry.dev/AGENT.md
  - type: JSONSchema
    url: json-schema/dualregistry-dev-fee-quote.schema.json
  - type: Authentication
    url: authentication/dualregistry-dev-authentication.yml
  - type: Conventions
    url: conventions/dualregistry-dev-conventions.yml
  - type: ErrorCatalog
    url: errors/dualregistry-dev-problem-types.yml
  - type: DataModel
    url: data-model/dualregistry-dev-data-model.yml
  - type: Examples
    url: examples/dualregistry-dev-examples.yml
  - type: RateLimits
    url: rate-limits/dualregistry-dev-rate-limits.yml
  - type: Lifecycle
    url: lifecycle/dualregistry-dev-lifecycle.yml
  - type: ToolCrosswalk
    url: mcp/dualregistry-dev-tool-crosswalk.yml
common:
- type: Website
  url: https://dualregistry.dev/
- type: Documentation
  url: https://dualregistry.dev/llms.txt
- type: APIReference
  name: Served OpenAPI stub (the provider's own reference; llms.txt is the fuller one)
  url: https://dualregistry.dev/openapi.json
- type: GettingStarted
  url: https://dualregistry.dev/AGENT.md
- type: Pricing
  name: Machine-readable fee schedule — PROMO.json (bps fee, promo window) and ORPHANDUST.json (flat unlock SKUs)
  url: https://dualregistry.dev/PROMO.json
- type: GitHubOrganization
  name: GitHub account of the operator (a personal account; holds the mirror repo orphan-desk-echo and the production source
    orphan-desk-source)
  url: https://github.com/manhatton31-svg
- type: SourceCode
  name: Production API source (public-feed/, deployed to dualregistry.dev)
  url: https://github.com/manhatton31-svg/orphan-desk-source
- type: LLMsTxt
  url: llms/dualregistry-dev-llms.txt
- type: WellKnown
  url: well-known/dualregistry-dev-well-known.yml
- type: AgentCard
  url: a2a/dualregistry-dev-a2a.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/dualregistry-dev-authentication.yml
- type: Conventions
  url: conventions/dualregistry-dev-conventions.yml
- type: Conformance
  url: conformance/dualregistry-dev-conformance.yml
- type: ErrorCatalog
  url: errors/dualregistry-dev-problem-types.yml
- type: Lifecycle
  url: lifecycle/dualregistry-dev-lifecycle.yml
- type: Plans
  url: plans/dualregistry-dev-plans-pricing.yml
- type: RateLimits
  url: rate-limits/dualregistry-dev-rate-limits.yml
- type: DataModel
  url: data-model/dualregistry-dev-data-model.yml
- type: Examples
  url: examples/dualregistry-dev-examples.yml
- type: Overlay
  url: overlays/dualregistry-dev-openapi-overlay.yaml
- type: JSONSchema
  url: json-schema/dualregistry-dev-fee-quote.schema.json
- type: AITransparency
  name: ai_disclosure field on every served JSON document (the desk states it is an AI agent with no human channel)
  url: regulatory/dualregistry-dev-regulatory-posture.yml
- type: DomainSecurity
  url: security/dualregistry-dev-domain-security.yml
- type: AgenticAccess
  url: agentic-access/dualregistry-dev-agentic-access.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 30
  pass: local-v3
x-coverage:
  state: covered
  reason: null
  detail: 'Fully covered. dualregistry.dev serves an anonymous OpenAPI 3.0.3 stub (7 operations) at /openapi.json, an A2A
    0.3.0 agent card at the canonical well-known path (shape-conformant; no JSON-RPC door — POST on its url is 405), ai-plugin.json,
    an x402 discovery document at /.well-known/x402, llms.txt, AGENT.md, a JSON Schema for fee quotes, machine-readable pricing
    (PROMO.json, ORPHANDUST.json) and a live x402 paywall that answered HTTP 402 with a PAYMENT-REQUIRED header on the per-echo
    GET and on the OrphanDust buy. The provider''s production source is public on GitHub. The only walls met were the provider''s
    own absences: no MCP server behind the mcp.json manifest (POST /mcp 404), no terms/privacy/status/changelog pages, no
    SDK, and no security.txt or OAuth metadata on any host.'
  evidence:
  - url: https://dualregistry.dev/openapi.json
    status: 200
  - url: https://dualregistry.dev/.well-known/agent-card.json
    status: 200
  - url: https://dualregistry.dev/.well-known/ai-plugin.json
    status: 200
  - url: https://dualregistry.dev/.well-known/x402
    status: 200
  - url: https://dualregistry.dev/api/echo?echo_id=echo_a25e7551ed53c3018600f816
    status: 402
  - url: https://dualregistry.dev/mcp
    status: 404
    note: no MCP server behind the published mcp.json tool manifest
  - url: https://dualregistry.dev/.well-known/security.txt
    status: 404
  checked: '2026-09-19'
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://dualregistry.dev/.well-known/agent-card.json
  grade: near-conformant
  protocol_version: 0.3.0
  control: 404

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