Xembly

Xembly was a Seattle-based enterprise AI company (2020-2024) whose assistant, Xena, acted as an automated "chief of staff" for knowledge workers - scheduling meetings, taking meeting notes, and tracking action items and tasks over email and Slack. Spun out of Madrona Venture Labs by Pete Christothoulou, Jason Flaks, and Peter Francis, and backed by Lightspeed Venture Partners, Norwest Venture Partners ($15M Series A), and Seven Peaks Ventures, Xembly discontinued its customer-facing services on June 1, 2024. It never published a public developer API, and the xembly.com domain has since lapsed to an unrelated operator.

Xembly is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Executive Assistant, Meetings, and Scheduling.

📡 Source on GitHub

0.0/100 minimal Agent 0/100 human only Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

0 APIs

Company Artificial Intelligence Executive Assistant Meetings Scheduling Task Management Productivity Defunct

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 0.0/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 0.0 / 9

Regulatory Posture 0.0 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 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

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/.

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 github.com/api-evangelist/xembly: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Source (apis.yml)

aid: xembly
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  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: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/xembly.png
name: Xembly
description: Xembly was a Seattle-based enterprise AI company (2020-2024) whose assistant, Xena, acted as an automated "chief
  of staff" for knowledge workers - scheduling meetings, taking meeting notes, and tracking action items and tasks over email
  and Slack. Spun out of Madrona Venture Labs by Pete Christothoulou, Jason Flaks, and Peter Francis, and backed by Lightspeed
  Venture Partners, Norwest Venture Partners ($15M Series A), and Seven Peaks Ventures, Xembly discontinued its customer-facing
  services on June 1, 2024. It never published a public developer API, and the xembly.com domain has since lapsed to an unrelated
  operator.
url: https://raw.githubusercontent.com/api-evangelist/xembly/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- lightspeed-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-status-date: '2024-06-01'
x-status-evidence: https://www.geekwire.com/2024/enterprise-ai-company-xembly-abruptly-ends-service-for-users-says-its-working-on-new-chapter/
x-domain-note: xembly.com no longer belongs to the company (unrelated sports-betting content as of 2026-07-21); do not link
  or probe it as Xembly. The github.com/xembly org and xembly.org are unrelated projects sharing the name.
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Artificial Intelligence
- Executive Assistant
- Meetings
- Scheduling
- Task Management
- Productivity
- Defunct
apis: []
common:
- name: llms.txt
  type: LLMsTxt
  url: llms/xembly-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io

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