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.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles lastseen-dev the way a machine reads it — 35 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — lastseen-dev scores 33.8/100 (thin), with a separate agent-readiness read of 23/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-10-31 · rubric v0.25.0
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title="lastseen-dev on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/lastseen-dev/card.svg"
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</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile lastseen-dev
Each block below is one kind of artifact we hold for lastseen-dev. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 30
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 30 ·
Agent Skills 1
An agent skill packages the how-to for driving these APIs from an assistant — the prompts, the sequence, the guardrails — so the knowledge to use the API travels with it.
Packaged agent skills for driving this provider's APIs from an AI assistant.
lastseen-dev-default-skill
AGENT SKILLSemantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Lastseen Dev Context
JSON-LDSpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
lastseen-dev API Rules
SPECTRALSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for lastseen-dev — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/lastseen-dev · machine-readable index on apis.io
This is an independent, third-party profile of lastseen-dev, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.