lastseen-dev

lastseen.dev provides an independent temporal notary service for software components, offering dated, hash‑chained observations of the public record. Users can submit a repository, organization, or package manifest and receive the date when the component was last observed, along with source details and censoring status. The platform records observations in a daily SHA‑256 hash chain, publicly anchored for verifiable integrity. It supports free, unauthenticated queries under a generous rate limit, and offers additional paid capabilities with advance notice. The service emphasizes transparency, open data, and a commitment to preserving the historical state of software dependencies without predictions or scores.

lastseen-dev publishes 30 API contracts indexed on the APIs.io network, including 45fc954bc3cc3a650498e51c089ecdef.txt API, About API, Actions API, and 27 more. Tagged areas include Company, Temporal Notary, Software Maintenance, MCP, and Open Source.

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

lastseen-dev’s developer surface includes signup flow, documentation, API reference, and 18 more developer resources.

🌐 Visit website📡 Profile data on GitHub
33.8/100 thin Agent 23/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →
1 published contract 1 Agent Skills
CompanyTemporal NotarySoftware MaintenanceMCPOpen Source

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0
Composite quality — 33.8/100 · thin
Contract Quality 8.1 / 21
Developer Ergonomics 5.1 / 17
Access Clarity 5.8 / 17
Operational Transparency 1.7 / 11
Contract Governance 2.2 / 10
Discoverability 5.3 / 9
Regulatory Posture 2.8 / 15
Agent readiness — 23/100 · 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 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 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 0 / 3
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/.
Show this score on your site. Kin Score badge preview for lastseen-dev It updates itself when the score changes. Paste this where you link to your API docs: 
<a href="https://apis.io/providers/lastseen-dev/"><img src="https://apis.io/badge/lastseen-dev/card.svg" alt="lastseen-dev 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
  • 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):
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/lastseen-dev/apis.yml: open an issue on github.com/api-evangelist/lastseen-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 →

APIs 30

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

lastseen-dev 45fc954bc3cc3a650498e51c089ecdef.txt API

The 45fc954bc3cc3a650498e51c089ecdef.txt API from lastseen-dev — 1 operation(s) for 45fc954bc3cc3a650498e51c089ecdef.txt.

lastseen-dev About API

The About API from lastseen-dev — 1 operation(s) for about.

lastseen-dev Actions API

The Actions API from lastseen-dev — 4 operation(s) for actions.

lastseen-dev Badge API

The Badge API from lastseen-dev — 3 operation(s) for badge.

lastseen-dev Chain API

The Chain API from lastseen-dev — 1 operation(s) for chain.

lastseen-dev Check API

The Check API from lastseen-dev — 1 operation(s) for check.

lastseen-dev Ci API

The Ci API from lastseen-dev — 1 operation(s) for ci.

lastseen-dev Departures API

The Departures API from lastseen-dev — 2 operation(s) for departures.

lastseen-dev Dispute API

The Dispute API from lastseen-dev — 1 operation(s) for dispute.

lastseen-dev Dispute Log API

The Dispute Log API from lastseen-dev — 1 operation(s) for dispute log.

lastseen-dev Docs API

The Docs API from lastseen-dev — 1 operation(s) for docs.

lastseen-dev Entity API

The Entity API from lastseen-dev — 14 operation(s) for entity.

lastseen-dev Incidents API

The Incidents API from lastseen-dev — 4 operation(s) for incidents.

lastseen-dev Lastseen.dev — Free Component Mortality Checks API

The Lastseen.dev — Free Component Mortality Checks API from lastseen-dev — 2 operation(s) for lastseen.dev — free component mortality checks.

lastseen-dev Lastseen2026indexnow.txt API

The Lastseen2026indexnow.txt API from lastseen-dev — 1 operation(s) for lastseen2026indexnow.txt.

lastseen-dev Llms.txt API

The Llms.txt API from lastseen-dev — 1 operation(s) for llms.txt.

lastseen-dev Manifest API

The Manifest API from lastseen-dev — 1 operation(s) for manifest.

lastseen-dev Npm API

The Npm API from lastseen-dev — 5 operation(s) for npm.

lastseen-dev Org API

The Org API from lastseen-dev — 1 operation(s) for org.

lastseen-dev Privacy API

The Privacy API from lastseen-dev — 1 operation(s) for privacy.

lastseen-dev Register API

The Register API from lastseen-dev — 1 operation(s) for register.

lastseen-dev Reports API

The Reports API from lastseen-dev — 5 operation(s) for reports.

lastseen-dev Robots.txt API

The Robots.txt API from lastseen-dev — 1 operation(s) for robots.txt.

lastseen-dev Sbom API

The Sbom API from lastseen-dev — 1 operation(s) for sbom.

lastseen-dev Sitemap.xml API

The Sitemap.xml API from lastseen-dev — 1 operation(s) for sitemap.xml.

lastseen-dev Status API

The Status API from lastseen-dev — 1 operation(s) for status.

lastseen-dev Terms API

The Terms API from lastseen-dev — 1 operation(s) for terms.

lastseen-dev Verify Account API

The Verify Account API from lastseen-dev — 1 operation(s) for verify account.

lastseen-dev Verify API

The Verify API from lastseen-dev — 1 operation(s) for verify.

lastseen-dev W API

The W API from lastseen-dev — 1 operation(s) for w.

Scroll for all 30

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

lastseen-dev-default-skill

AGENT SKILL

Semantic Vocabularies 1

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

Lastseen Dev Context

2 classes · 4 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

lastseen-dev API Rules

8 rules · 6 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

Lastseen Dev Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Lastseen Dev Agentic Access

130 operations · 8 acting

130 operations · 8 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 DataModel
DataModel
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs
SDKs
 Packages
Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage
StatusPage

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)

apis.yml Raw ↑ 
aid: lastseen-dev
name: lastseen-dev
description: lastseen.dev provides an independent temporal notary service for software components, offering dated, hash‑chained
  observations of the public record. Users can submit a repository, organization, or package manifest and receive the date
  when the component was last observed, along with source details and censoring status. The platform records observations
  in a daily SHA‑256 hash chain, publicly anchored for verifiable integrity. It supports free, unauthenticated queries under
  a generous rate limit, and offers additional paid capabilities with advance notice. The service emphasizes transparency,
  open data, and a commitment to preserving the historical state of software dependencies without predictions or scores.
url: https://artifacts.apis.io/lastseen-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- Temporal Notary
- Software Maintenance
- MCP
- Open Source
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/lastseen-dev-agentic-access.yml
- type: Spectral
  url: rules/lastseen-dev-rules.yml
- type: JSONLD
  url: json-ld/lastseen-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/lastseen-dev-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/lastseen-dev-data-model.yml
- type: ErrorCatalog
  url: errors/lastseen-dev-problem-types.yml
- type: Conformance
  url: conformance/lastseen-dev-conformance.yml
- type: LLMsTxt
  url: llms/lastseen-dev-llms.txt
- type: Hosts
  url: hosts/lastseen-dev-hosts.yml
- type: Vendors
  url: vendors/lastseen-dev-vendors.yml
- type: SDKs
  url: packages/lastseen-dev-packages.yml
- type: Packages
  url: packages/lastseen-dev-packages.yml
- type: StatusPage
  url: https://lastseen.dev/status
- type: SignUp
  url: https://lastseen.dev/register
- type: DomainSecurity
  url: security/lastseen-dev-domain-security.yml
- type: Website
  url: https://lastseen.dev/
- type: Documentation
  url: https://lastseen.dev/docs
- type: APIReference
  url: https://lastseen.dev/openapi.json
- type: TermsOfService
  url: https://lastseen.dev/terms
- type: PrivacyPolicy
  url: https://lastseen.dev/privacy
apis:
- aid: lastseen-dev:lastseen-dev-45fc954bc3cc3a650498e51c089ecdef-txt-api
  name: lastseen-dev 45fc954bc3cc3a650498e51c089ecdef.txt API
  description: The 45fc954bc3cc3a650498e51c089ecdef.txt API from lastseen-dev — 1 operation(s) for 45fc954bc3cc3a650498e51c089ecdef.txt.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - 45fc954bc3cc3a650498e51c089ecdef.txt
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-45fc954bc3cc3a650498e51c089ecdef-txt-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-about-api
  name: lastseen-dev About API
  description: The About API from lastseen-dev — 1 operation(s) for about.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - About
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-about-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-actions-api
  name: lastseen-dev Actions API
  description: The Actions API from lastseen-dev — 4 operation(s) for actions.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Actions
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-actions-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-badge-api
  name: lastseen-dev Badge API
  description: The Badge API from lastseen-dev — 3 operation(s) for badge.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Badge
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-badge-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-chain-api
  name: lastseen-dev Chain API
  description: The Chain API from lastseen-dev — 1 operation(s) for chain.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Chain
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-chain-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-check-api
  name: lastseen-dev Check API
  description: The Check API from lastseen-dev — 1 operation(s) for check.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Check
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-check-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-ci-api
  name: lastseen-dev Ci API
  description: The Ci API from lastseen-dev — 1 operation(s) for ci.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Ci
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-ci-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-departures-api
  name: lastseen-dev Departures API
  description: The Departures API from lastseen-dev — 2 operation(s) for departures.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Departures
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-departures-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-dispute-api
  name: lastseen-dev Dispute API
  description: The Dispute API from lastseen-dev — 1 operation(s) for dispute.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Dispute
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-dispute-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-dispute-log-api
  name: lastseen-dev Dispute Log API
  description: The Dispute Log API from lastseen-dev — 1 operation(s) for dispute log.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Dispute Log
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-dispute-log-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-docs-api
  name: lastseen-dev Docs API
  description: The Docs API from lastseen-dev — 1 operation(s) for docs.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Docs
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-docs-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-entity-api
  name: lastseen-dev Entity API
  description: The Entity API from lastseen-dev — 14 operation(s) for entity.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Entity
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-entity-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-incidents-api
  name: lastseen-dev Incidents API
  description: The Incidents API from lastseen-dev — 4 operation(s) for incidents.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Incidents
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-incidents-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-lastseen-dev-free-component-mortality-checks-api
  name: lastseen-dev Lastseen.dev — Free Component Mortality Checks API
  description: The Lastseen.dev — Free Component Mortality Checks API from lastseen-dev — 2 operation(s) for lastseen.dev
    — free component mortality checks.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Lastseen.dev — Free Component Mortality Checks
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-lastseen-dev-free-component-mortality-checks-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-lastseen2026indexnow-txt-api
  name: lastseen-dev Lastseen2026indexnow.txt API
  description: The Lastseen2026indexnow.txt API from lastseen-dev — 1 operation(s) for lastseen2026indexnow.txt.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Lastseen2026indexnow.txt
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-lastseen2026indexnow-txt-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-llms-txt-api
  name: lastseen-dev Llms.txt API
  description: The Llms.txt API from lastseen-dev — 1 operation(s) for llms.txt.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Llms.txt
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-llms-txt-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-manifest-api
  name: lastseen-dev Manifest API
  description: The Manifest API from lastseen-dev — 1 operation(s) for manifest.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Manifest
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-manifest-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-npm-api
  name: lastseen-dev Npm API
  description: The Npm API from lastseen-dev — 5 operation(s) for npm.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Npm
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-npm-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-org-api
  name: lastseen-dev Org API
  description: The Org API from lastseen-dev — 1 operation(s) for org.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Org
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-org-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-privacy-api
  name: lastseen-dev Privacy API
  description: The Privacy API from lastseen-dev — 1 operation(s) for privacy.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Privacy
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-privacy-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-register-api
  name: lastseen-dev Register API
  description: The Register API from lastseen-dev — 1 operation(s) for register.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Register
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-register-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-reports-api
  name: lastseen-dev Reports API
  description: The Reports API from lastseen-dev — 5 operation(s) for reports.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Reports
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-reports-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-robots-txt-api
  name: lastseen-dev Robots.txt API
  description: The Robots.txt API from lastseen-dev — 1 operation(s) for robots.txt.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Robots.txt
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-robots-txt-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-sbom-api
  name: lastseen-dev Sbom API
  description: The Sbom API from lastseen-dev — 1 operation(s) for sbom.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Sbom
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-sbom-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-sitemap-xml-api
  name: lastseen-dev Sitemap.xml API
  description: The Sitemap.xml API from lastseen-dev — 1 operation(s) for sitemap.xml.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Sitemap.xml
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-sitemap-xml-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-status-api
  name: lastseen-dev Status API
  description: The Status API from lastseen-dev — 1 operation(s) for status.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-status-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-terms-api
  name: lastseen-dev Terms API
  description: The Terms API from lastseen-dev — 1 operation(s) for terms.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Terms
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-terms-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-verify-account-api
  name: lastseen-dev Verify Account API
  description: The Verify Account API from lastseen-dev — 1 operation(s) for verify account.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Verify Account
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-verify-account-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-verify-api
  name: lastseen-dev Verify API
  description: The Verify API from lastseen-dev — 1 operation(s) for verify.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - Verify
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-verify-api-openapi.yml
- aid: lastseen-dev:lastseen-dev-w-api
  name: lastseen-dev W API
  description: The W API from lastseen-dev — 1 operation(s) for w.
  humanURL: https://lastseen.dev/openapi.json
  baseURL: https://api.lastseen.dev
  tags:
  - W
  properties:
  - type: OpenAPI
    url: openapi/lastseen-dev-w-api-openapi.yml
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

lastseen-dev API — frequently asked questions

Does lastseen-dev have an API?

Yes. APIs.io lists 30 APIs from lastseen-dev, including lastseen-dev 45fc954bc3cc3a650498e51c089ecdef.txt API, lastseen-dev About API and lastseen-dev Actions API, and 27 more.

Is there an OpenAPI specification for the lastseen-dev API?

Yes. APIs.io indexes 30 OpenAPI specifications for lastseen-dev, each linked for download from this page.

Is the lastseen-dev API ready for AI agents?

lastseen-dev has a Kin Score of 33.8 out of 100 (thin) and an Agent Readiness score of 23.2 (agent-aware), scored by API Evangelist on 2026-10-31.

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/lastseen-dev"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/lastseen-dev/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/lastseen-dev/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

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.