NexusFlow OS
O

OpenSpec

Winter 2026
openspec.devB2BUnknown
Market index

Investor read

Evidence-bound summary — expand sections for movement, risks, and signals.

Memo snapshot · May 19, 2026, 8:24 PM

What they do

OpenSpec — A lightweight spec‑driven framework OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Quick read

  • •OpenSpec — A lightweight spec‑driven framework OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.
  • •Reported angle: OpenSpec — A lightweight spec‑driven framework
  • •Indexed activity snapshot: 0 funding‑related row(s), 3 hiring‑related, 1 GitHub‑tagged, 5 product/news‑style — scoring reflects corpus coverage only.

Stage

Unknown

Evidence summary

Verified facts

  • •OpenSpec — A lightweight spec‑driven framework OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.
  • •Reported angle: OpenSpec — A lightweight spec‑driven framework
  • •Indexed activity snapshot: 0 funding‑related row(s), 3 hiring‑related, 1 GitHub‑tagged, 5 product/news‑style — scoring reflects corpus coverage only.
Nexus growth score
48.0Building
7D+0%
30D+0%
Medium Confidence

Source health

  • public_market_enrichmentok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_pressok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_newsok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_jobsok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_companyok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_careersok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_blogok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_aboutok
    Last checked Mon, May 11, 05:14 AM
  • public_page:_ok
    Last checked Mon, May 11, 05:14 AM
  • public_page:homeok
    Last checked Mon, May 11, 05:14 AM
  • public_page:customersok
    Last checked Sun, May 10, 10:48 PM
  • public_page:pricingok
    Last checked Sun, May 10, 10:48 PM
  • public_page:pressok
    Last checked Sun, May 10, 10:48 PM
  • public_page:newsok
    Last checked Sun, May 10, 10:48 PM
  • public_page:blogok
    Last checked Sun, May 10, 10:48 PM
  • public_page:jobsok
    Last checked Sun, May 10, 10:48 PM
  • public_page:careersok
    Last checked Sun, May 10, 10:48 PM
  • public_page:teamok
    Last checked Sun, May 10, 10:48 PM
  • public_page:aboutok
    Last checked Sun, May 10, 10:48 PM

Nexus score momentum

487D +030D +0
100500
2026-05-10: 402026-05-11: 48

Signal breakdown

Latest momentum signal per category. Expand a card to inspect raw payloads.

Score snapshots

Public source summary

Total evidence rows
15
Latest evidence
Mon, May 11, 05:14 AM

Source types found

about_pageblogcareers_pagefoundergithubhiringnewsofficial_siteproduct

Strongest / recent news-style rows

  • OpenSpec — A lightweight spec‑driven framework

    About / company · Mon, May 11, 05:14 AM · confidence 90%high quality

    https://openspec.dev/company

  • OpenSpec — A lightweight spec‑driven framework

    About / company · Mon, May 11, 05:14 AM · confidence 90%high quality

    https://openspec.dev/about

  • OpenSpec — A lightweight spec‑driven framework

    Customers · Sun, May 10, 10:48 PM · confidence 90%high quality

    https://openspec.dev/customers

Public signal timeline

Newest first · 15 event(s)

1
Mon, May 11, 05:14 AM · github · 72% · verified_publichigh quality

GitHub - Fission-AI/OpenSpec: Spec-driven development (SDD) for AI coding assistants. · GitHub

Source: GitHub (linked from site)

GitHub presence linked from official site for OpenSpec.

Source ↗
2
Mon, May 11, 05:14 AM · blog · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Blog / news

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
3
Mon, May 11, 05:14 AM · blog · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Blog / news

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
4
Mon, May 11, 05:14 AM · careers_page · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Careers

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
5
Mon, May 11, 05:14 AM · about_page · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: About / company

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
6
Mon, May 11, 05:14 AM · careers_page · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Careers

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
7
Mon, May 11, 05:14 AM · blog · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Blog / news

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
8
Mon, May 11, 05:14 AM · about_page · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: About / company

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
9
Mon, May 11, 05:14 AM · official_site · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Homepage

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
10
Sun, May 10, 10:48 PM · product · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Customers

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
11
Sun, May 10, 10:48 PM · product · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Pricing

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
12
Sun, May 10, 10:48 PM · news · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Press

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
13
Sun, May 10, 10:48 PM · news · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: News

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
14
Sun, May 10, 10:48 PM · hiring · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Jobs page

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗
15
Sun, May 10, 10:48 PM · founder · 90% · publichigh quality

OpenSpec — A lightweight spec‑driven framework

Source: Team page

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

Source ↗

Official / company site

1 row(s)

official_site·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Homepage

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/

News

7 row(s)

about_page·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: About / company

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/company
about_page·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: About / company

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/about
product·Sun, May 10, 10:48 PM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Customers

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/customers
product·Sun, May 10, 10:48 PM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Pricing

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/pricing
news·Sun, May 10, 10:48 PM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Press

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/press
news·Sun, May 10, 10:48 PM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: News

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/news
founder·Sun, May 10, 10:48 PM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Team page

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/team

Hiring

3 row(s)

careers_page·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Careers

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/jobs
careers_page·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Careers

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/careers
hiring·Sun, May 10, 10:48 PM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Jobs page

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/jobs

GitHub

1 row(s)

github·Mon, May 11, 05:14 AM·Confidence 72%high qualityverified_public

GitHub - Fission-AI/OpenSpec: Spec-driven development (SDD) for AI coding assistants. · GitHub

Source name: GitHub (linked from site)

GitHub presence linked from official site for OpenSpec.

https://github.com/Fission-AI/OpenSpec

Blog

3 row(s)

blog·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Blog / news

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/press
blog·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Blog / news

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/news
blog·Mon, May 11, 05:14 AM·Confidence 90%high qualitypublic

OpenSpec — A lightweight spec‑driven framework

Source name: Blog / news

OpenSpec is a lightweight, spec‑driven framework for coding agents and CLIs — universal, open source, and no API keys or MCP required.

https://openspec.dev/blog

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