Lastline

Lastline was a Santa Barbara, California cybersecurity company founded in 2011, building high-resolution malware analysis and network detection and response (NDR) technology based on full-system emulation sandboxing. Its developer-facing surface is the Lastline Analyst API (marketed in the company's earliest years as the Previct Analyst API), an asynchronous web API for submitting files and URLs to the Lastline analysis cloud and retrieving detailed behavioral analysis reports, indicators of compromise and analysis artifacts. Lastline was acquired by VMware in 2020 and the technology was folded into VMware NSX Network Detection and Response; VMware was subsequently acquired by Broadcom. The lastline.com marketing site is retired and no longer answers HTTP, but the customer portal at user.lastline.com is live and branded "NSX - Network Detection and Response" behind a Broadcom Inc. TLS certificate, and the full Analyst API reference plus its first-party Python client downloads remain served. This profile captures that surviving API surface from the live first-party documentation, together with probes recording what is no longer published.

Lastline is listed with 1 API on the APIs.io network. Tagged areas include Company, Cybersecurity, Malware Analysis, Sandboxing, and Threat Intelligence.

Lastline’s developer surface includes developer portal, changelog, CLI, documentation, API reference, getting-started guide, support, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

23.2/100 emerging ▬ flat Agent 5/100 agent aware library Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Company Cybersecurity Malware Analysis Sandboxing Threat Intelligence Network Detection and Response Security Acquired

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 23.2/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 11.7 / 17

Access Clarity 0.0 / 17

Operational Transparency 1.7 / 11

Contract Governance 0.5 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 5/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 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

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
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)

11 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
Access Clarity scores 0.0 — up to +20.0 composite points
Contract Governance scores 4.5 — up to +11.5 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/lastline/apis.yml: open an issue on github.com/api-evangelist/lastline 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 1

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

Lastline Analyst API

Web API for submitting files (PE, PDF, Office documents, Flash, Java applets, Android applications, archives) and URLs to the Lastline analysis cloud for high-resolution behavio...

Security Posture 2

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

Lastline Authentication

http/apiKey · 2 schemes

SECURITY

Lastline Domain Security

TLSv1.3

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

CLI

CLI

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: lastline
name: Lastline
description: Lastline was a Santa Barbara, California cybersecurity company founded in 2011, building high-resolution malware
  analysis and network detection and response (NDR) technology based on full-system emulation sandboxing. Its developer-facing
  surface is the Lastline Analyst API (marketed in the company's earliest years as the Previct Analyst API), an asynchronous
  web API for submitting files and URLs to the Lastline analysis cloud and retrieving detailed behavioral analysis reports,
  indicators of compromise and analysis artifacts. Lastline was acquired by VMware in 2020 and the technology was folded into
  VMware NSX Network Detection and Response; VMware was subsequently acquired by Broadcom. The lastline.com marketing site
  is retired and no longer answers HTTP, but the customer portal at user.lastline.com is live and branded "NSX - Network Detection
  and Response" behind a Broadcom Inc. TLS certificate, and the full Analyst API reference plus its first-party Python client
  downloads remain served. This profile captures that surviving API surface from the live first-party documentation, together
  with probes recording what is no longer published.
url: https://raw.githubusercontent.com/api-evangelist/lastline/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- redpoint-ventures
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: VMware
x-acquired-year: '2020'
x-successor-product: VMware NSX Network Detection and Response
deliveryModel:
  model: library
  open_source: false
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-21'
image: https://user.lastline.com/favicon.ico
tags:
- Company
- Cybersecurity
- Malware Analysis
- Sandboxing
- Threat Intelligence
- Network Detection and Response
- Security
- Acquired
apis:
- aid: lastline:analyst-api
  name: Lastline Analyst API
  description: 'Web API for submitting files (PE, PDF, Office documents, Flash, Java applets, Android applications, archives)
    and URLs to the Lastline analysis cloud for high-resolution behavioral malware analysis, then retrieving task results,
    analysis reports, behavior activities, generated artifacts and network indicators of compromise. The API is asynchronous:
    submissions return a task UUID which is later resolved through get_completed() and get_result(). Responses are JSON or
    XML selected by a URL extension. The reference documentation remains live at analysis.lastline.com.'
  humanURL: https://analysis.lastline.com/analysis/api-docs/html/overview.html
  baseURL: https://analysis.lastline.com/analysis
  tags:
  - Malware Analysis
  - Sandboxing
  - Threat Intelligence
  - Security
  properties:
  - type: Documentation
    url: https://analysis.lastline.com/analysis/api-docs/html/overview.html
  - type: APIReference
    url: https://analysis.lastline.com/analysis/api-docs/html/api.html
  - type: GettingStarted
    url: https://analysis.lastline.com/analysis/api-docs/html/overview.html#getting-started
  - type: Authentication
    url: authentication/lastline-authentication.yml
  - type: ErrorCatalog
    url: errors/lastline-error-codes.yml
  - type: Conventions
    url: conventions/lastline-conventions.yml
  - type: DataModel
    url: data-model/lastline-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: ParentCompany
  url: https://apis.io/providers/vmware/
  name: VMware
  x-relationship: acquisition
  x-generated-by: broadcom-family:2026-08-21
  x-acquired: 2020
- type: Website
  url: http://www.lastline.com/
- type: Portal
  url: https://user.lastline.com/portal
- type: Packages
  url: packages/lastline-packages.yml
- type: SDKs
  url: packages/lastline-packages.yml
- type: Lifecycle
  url: lifecycle/lastline-lifecycle.yml
- type: Conformance
  url: conformance/lastline-conformance.yml
- type: ChangeLog
  url: changelog/lastline-changelog.yml
- type: CLI
  url: cli/lastline-cli.yml
- type: Documentation
  url: https://analysis.lastline.com/analysis/api-docs/html/index.html
- type: APIReference
  url: https://analysis.lastline.com/analysis/api-docs/html/api.html
- type: GettingStarted
  url: https://analysis.lastline.com/analysis/api-docs/html/overview.html#getting-started
- type: Support
  url: https://my.vmware.com/group/vmware/get-help
- type: DomainSecurity
  url: security/lastline-domain-security.yml
- type: LLMsTxt
  url: llms/lastline-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence
x-parent: vmware
x-relationship: acquisition
x-acquired: 2020

Lastline API — frequently asked questions

Does Lastline have an API?

Yes. APIs.io lists 1 API from Lastline, including Lastline Analyst API.

How do I authenticate with the Lastline API?

Lastline uses bearer-token authentication (http/apiKey · 2 schemes). The details are profiled on APIs.io as Lastline Authentication.

Is the Lastline API ready for AI agents?

Lastline has a Kin Score of 23.2 out of 100 (emerging) and an Agent Readiness score of 5.4 (agent-aware), scored by API Evangelist on 2026-10-31.

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