DefaultVerifier

DefaultVerifier provides evidence rails for autonomous work, issuing signed receipts with proof seals that ensure integrity. The platform enables AI agents to verify any receipt and allows users to issue their own, supporting transparent and trustworthy automation workflows across services.

DefaultVerifier is listed with 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Automation, Verification, and Receipts.

The DefaultVerifier catalog on APIs.io includes 1 Spectral governance ruleset.

🌐 Visit website 📡 Profile data on GitHub

13.2/100 emerging Agent 6/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API 1 MCP Servers

Company Artificial Intelligence Automation Verification Receipts

Kin Score

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

Composite quality — 13.2/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.5 / 9

Regulatory Posture 2.6 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

10 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 0.0 — up to +20.0 composite points
Access Clarity scores 21.1 — up to +15.8 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/defaultverifier-com/apis.yml: open an issue on github.com/api-evangelist/defaultverifier-com 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)

measured — observed by APIs.io (documented)

APIs 1

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

DefaultVerifier API

DefaultVerifier provides x402 settlement witness verification endpoints.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

DefaultVerifier MCP Server

Remote MCP server at defaultverifier.com.

MCP SERVER

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

DefaultVerifier API Rules

22 rules · 20 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

Defaultverifier Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Defaultverifier Com Agentic Access

2 operations · 2 acting

AGENTIC

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

MCPServer

MCPServer

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

ErrorCatalog

ErrorCatalog

Conformance

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: defaultverifier-com
name: DefaultVerifier
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://defaultverifier.com/badge/agent:morpheus.svg
description: DefaultVerifier provides evidence rails for autonomous work, issuing signed receipts with proof seals that ensure
  integrity. The platform enables AI agents to verify any receipt and allows users to issue their own, supporting transparent
  and trustworthy automation workflows across services.
url: https://artifacts.apis.io/defaultverifier-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-05 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-05'
modified: '2026-11-05'
tags:
- Company
- Artificial Intelligence
- Automation
- Verification
- Receipts
tags_raw:
- Company
- AI
- Automation
- Verification
- Receipts
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/defaultverifier-com-agentic-access.yml
- type: Spectral
  url: rules/defaultverifier-com-rules.yml
- type: ErrorCatalog
  url: errors/defaultverifier-com-problem-types.yml
- type: Conformance
  url: conformance/defaultverifier-com-conformance.yml
- type: MCPServer
  url: mcp/defaultverifier-com-mcp.yml
- type: Hosts
  url: hosts/defaultverifier-com-hosts.yml
- type: Vendors
  url: vendors/defaultverifier-com-vendors.yml
- type: TermsOfService
  url: https://defaultverifier.com/terms
- type: PrivacyPolicy
  url: https://defaultverifier.com/privacy
- type: DomainSecurity
  url: security/defaultverifier-com-domain-security.yml
- type: Website
  url: https://defaultverifier.com/
apis:
- name: DefaultVerifier API
  description: DefaultVerifier provides x402 settlement witness verification endpoints.
  humanURL: https://defaultverifier.com/
  baseURL: https://defaultverifier.com
  aid: defaultverifier-com:defaultverifier-api
x-enrichment:
  date: '2026-11-05'
  status: enriched
  artifacts_added: 12
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

DefaultVerifier API — frequently asked questions

Does DefaultVerifier have an API?

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

Does DefaultVerifier have an MCP server?

Yes. APIs.io lists 1 MCP server for DefaultVerifier: Remote MCP server at defaultverifier.com.

Is the DefaultVerifier API ready for AI agents?

DefaultVerifier has a Kin Score of 13.2 out of 100 (emerging) and an Agent Readiness score of 6.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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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.
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