deadends.dev

deadends-dev is a company surfaced via the API Evangelist harvest backlog (source: mcp-registry) and added to the network as a stub for full-pipeline profiling.

deadends.dev publishes 7 API contracts indexed on the APIs.io network, including Countries.json API, Country API, Deadends.dev API, and 4 more. Tagged areas include Error Database, Debugging, and Open Source.

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

🌐 Visit website 📡 Profile data on GitHub

24.6/100 emerging Agent 20/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract

Error DatabaseDebugging Open Source

Kin Score

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

Composite quality — 24.6/100 · emerging

Contract Quality 12.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 0.0 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.2 / 10

Discoverability 4.1 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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 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

Pagination 0 / 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

10 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 7.1 — up to +18.6 composite points
Operational Transparency scores 10.5 — up to +11.6 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/deadends-dev/apis.yml: open an issue on github.com/api-evangelist/deadends-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 2

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.

Agent2Agent

measured — observed by APIs.io (near-conformant)

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

deadends.dev Countries.json API

The Countries.json API from deadends.dev — 1 operation(s) for countries.json.

deadends.dev Country API

The Country API from deadends.dev — 1 operation(s) for country.

deadends.dev Deadends.dev API

The Deadends.dev API API from deadends.dev — 1 operation(s) for deadends.dev api.

deadends.dev Errors.ndjson API

The Errors.ndjson API from deadends.dev — 1 operation(s) for errors.ndjson.

deadends.dev Index.json API

The Index.json API from deadends.dev — 1 operation(s) for index.json.

deadends.dev Match.json API

The Match.json API from deadends.dev — 1 operation(s) for match.json.

deadends.dev Stats.json API

The Stats.json API from deadends.dev — 1 operation(s) for stats.json.

Scroll for all 7

Semantic Vocabularies 1

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

Deadends Dev Context

4 classes · 21 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

deadends.dev API Rules

39 rules · 37 errors 1 warnings 1 info

SPECTRAL

JSON Schema 4

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

CountryAggregate

8 properties

JSON SCHEMA

CountrySummary

6 properties

JSON SCHEMA

ErrorCanon

7 properties

JSON SCHEMA

ErrorSummary

8 properties

JSON SCHEMA

Security Posture 2

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

Deadends Dev Domain Security

TLSv1.3

SECURITY

Deadends Dev Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Deadends Dev Agentic Access

7 operations

7 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 4

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: deadends-dev
name: deadends.dev
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://deadends.dev/og-image.png
description: 'deadends-dev is a company surfaced via the API Evangelist harvest backlog (source: mcp-registry) and added to
  the network as a stub for full-pipeline profiling.'
url: https://artifacts.apis.io/deadends-dev/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:
- Error Database
- Debugging
- Open Source
tags_raw:
- Error Database
- Debugging
- API
- Open Source
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/deadends-dev-agentic-access.yml
- type: Spectral
  url: rules/deadends-dev-rules.yml
- type: JSONLD
  url: json-ld/deadends-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/deadends-dev-vocabulary.yml
- type: DataModel
  url: data-model/deadends-dev-data-model.yml
- type: Conformance
  url: conformance/deadends-dev-conformance.yml
- type: LLMsTxt
  url: llms/deadends-dev-llms.txt
- type: AgentCard
  url: a2a/deadends-dev-a2a.yml
- type: SecurityTxt
  url: well-known/deadends-dev-security.txt
- type: WellKnown
  url: well-known/deadends-dev-well-known.yml
- type: Hosts
  url: hosts/deadends-dev-hosts.yml
- type: Vendors
  url: vendors/deadends-dev-vendors.yml
- type: SDKs
  url: packages/deadends-dev-packages.yml
- type: Packages
  url: packages/deadends-dev-packages.yml
- type: Security
  url: https://deadends.dev/security/
- type: VulnerabilityDisclosure
  url: security/deadends-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/deadends-dev-domain-security.yml
- type: Website
  url: https://deadends.dev/
apis:
- aid: deadends-dev:deadends-dev-countries-json-api
  name: deadends.dev Countries.json API
  description: The Countries.json API from deadends.dev — 1 operation(s) for countries.json.
  humanURL: https://deadends.dev/api
  baseURL: https://deadends.dev/api/v1
  tags:
  - Countries.json
  properties:
  - type: OpenAPI
    url: openapi/deadends-dev-countries-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deadends-dev-error-canon-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-aggregate-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-error-summary-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-summary-schema.json
- aid: deadends-dev:deadends-dev-country-api
  name: deadends.dev Country API
  description: The Country API from deadends.dev — 1 operation(s) for country.
  humanURL: https://deadends.dev/api
  baseURL: https://deadends.dev/api/v1
  tags:
  - Country
  properties:
  - type: OpenAPI
    url: openapi/deadends-dev-country-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deadends-dev-error-canon-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-aggregate-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-error-summary-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-summary-schema.json
- aid: deadends-dev:deadends-dev-deadends-dev-api-api
  name: deadends.dev Deadends.dev API
  description: The Deadends.dev API API from deadends.dev — 1 operation(s) for deadends.dev api.
  humanURL: https://deadends.dev/api
  baseURL: https://deadends.dev/api/v1
  tags:
  - Deadends.dev API
  properties:
  - type: OpenAPI
    url: openapi/deadends-dev-deadends-dev-api-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deadends-dev-error-canon-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-aggregate-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-error-summary-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-summary-schema.json
- aid: deadends-dev:deadends-dev-errors-ndjson-api
  name: deadends.dev Errors.ndjson API
  description: The Errors.ndjson API from deadends.dev — 1 operation(s) for errors.ndjson.
  humanURL: https://deadends.dev/api
  baseURL: https://deadends.dev/api/v1
  tags:
  - Errors.ndjson
  properties:
  - type: OpenAPI
    url: openapi/deadends-dev-errors-ndjson-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deadends-dev-error-canon-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-aggregate-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-error-summary-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-summary-schema.json
- aid: deadends-dev:deadends-dev-index-json-api
  name: deadends.dev Index.json API
  description: The Index.json API from deadends.dev — 1 operation(s) for index.json.
  humanURL: https://deadends.dev/api
  baseURL: https://deadends.dev/api/v1
  tags:
  - Index.json
  properties:
  - type: OpenAPI
    url: openapi/deadends-dev-index-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deadends-dev-error-canon-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-aggregate-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-error-summary-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-summary-schema.json
- aid: deadends-dev:deadends-dev-match-json-api
  name: deadends.dev Match.json API
  description: The Match.json API from deadends.dev — 1 operation(s) for match.json.
  humanURL: https://deadends.dev/api
  baseURL: https://deadends.dev/api/v1
  tags:
  - Match.json
  properties:
  - type: OpenAPI
    url: openapi/deadends-dev-match-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deadends-dev-error-canon-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-aggregate-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-error-summary-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-summary-schema.json
- aid: deadends-dev:deadends-dev-stats-json-api
  name: deadends.dev Stats.json API
  description: The Stats.json API from deadends.dev — 1 operation(s) for stats.json.
  humanURL: https://deadends.dev/api
  baseURL: https://deadends.dev/api/v1
  tags:
  - Stats.json
  properties:
  - type: OpenAPI
    url: openapi/deadends-dev-stats-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deadends-dev-error-canon-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-aggregate-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-error-summary-schema.json
  - type: JSONSchema
    url: json-schema/deadends-dev-country-summary-schema.json
x-enrichment:
  date: '2026-11-05'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

deadends.dev API — frequently asked questions

Does deadends.dev have an API?

Yes. APIs.io lists 7 APIs from deadends.dev, including deadends.dev Countries.json API, deadends.dev Country API and deadends.dev Deadends.dev API, and 4 more.

Is there an OpenAPI specification for the deadends.dev API?

Yes. APIs.io indexes 7 OpenAPI specifications for deadends.dev, each linked for download from this page.

Is the deadends.dev API ready for AI agents?

deadends.dev has a Kin Score of 24.6 out of 100 (emerging) and an Agent Readiness score of 20.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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