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21st

SeedFunding signal
21st.devB2BSan Francisco, CA, USA
Market index

Market data is refreshed once per day from public sources. Information may be incomplete or outdated — verify independently before making decisions. This is not investment advice.

Investor read

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

Memo snapshot · Jul 2, 2026, 5:26 PM

Worth a meetingEvidence-bound analyst verdict
  • •Funding: Raised $35M across 3 funding rounds. Latest: $17M (Feb 2026). Investors: Y Combinator.
  • •Named backers in indexed sources: Y Combinator.
  • •Hiring: 4 hiring‑related row(s); role‑spam risk if mostly generic boards
  • •Product/news: 7 product/news‑styled row(s); headline risk without filings

DealFlow OS uses public web data and automated enrichment. Research may be incomplete, outdated, or incorrect. Verify important information before making investment or outreach decisions.

TL;DR

Seed (YC)

21st.dev — AI Agent Registry, UI Components & Developer Tools for the Agentic Internet Ship AI-powered products faster with 21st.dev

Funding

Raised $35M across 3 funding rounds. Latest: $17M (Feb 2026). Investors: Y Combinator. (High).

Quick read

  • •21st.dev — AI Agent Registry, UI Components & Developer Tools for the Agentic Internet Ship AI-powered products faster with 21st.dev
  • •Reported angle: Integrate raises $17M to move defense project management into the 21st century

Key signals

Funding

Raised $35M across 3 funding rounds. Latest: $17M (Feb 2026). Investors: Y Combinator. (High).

Hiring

4 hiring‑related row(s); role‑spam risk if mostly generic boards (High).

Product / news

7 product/news‑styled row(s); headline risk without filings (High).

Evidence summary

Verified facts

  • •21st.dev — AI Agent Registry, UI Components & Developer Tools for the Agentic Internet Ship AI-powered products faster with 21st.dev
  • •Reported angle: Integrate raises $17M to move defense project management into the 21st century

Recent movers

  • •Jun 29, 2026 · techcrunch — Pallet uses AI to bring logistics into the 21st century
  • •Jun 29, 2026 · techcrunch — Integrate raises $17M to move defense project management into the 21st century
  • •Jul 2, 2026 · Blog — Blog | 21st

+5 more in Recent movement below

  • •Jun 29, 2026 · techcrunch — Pallet uses AI to bring logistics into the 21st century
  • •Jun 29, 2026 · techcrunch — Integrate raises $17M to move defense project management into the 21st century
  • •Jul 2, 2026 · Blog — Blog | 21st
  • •May 11, 2026 · Blog / news — News — 21st
  • •May 10, 2026 · News — News — 21st
  • •May 20, 2026 · 21st.dev — Our Story | 21st
  • •May 20, 2026 · 21st.dev — 21st Jobs
  • •Jun 29, 2026 · official_site — careers fesinstitute's UI components | 21st
  • •Y Combinator

Suggested next steps

  • ▸Open a founder conversation this month; validate traction claims against the indexed evidence.
  • ▸Add to the active watchlist so new signals trigger alerts.

Funding & hiring signals

fundingConfidence: low

Pallet uses AI to bring logistics into the 21st century

Pallet uses AI to bring logistics into the 21st century https://techcrunch.com/2024/10/02/pallet-uses-ai-to-bring-logistics-into-the-21st-century/

Affected score: noObserved: Jun 29, 2026

Weak funding evidence: mention does not include a parsed raise amount/round and may refer to non-funding context.

fundingJun 29, 2026Confidence: high

Integrate raises $17M to move defense project management into the 21st century

Integrate raises $17M to move defense project management into the 21st century https://techcrunch.com/2026/02/11/integrate-raises-17m-to-move-defense-project-management-into-the-21st-century/

Affected score: yesObserved: Jun 29, 2026Amount: $17M
funding_articleMay 20, 2026Confidence: high

Our Story | 21st

Founders state they got into Y Combinator W26; no public round size on company site.

Affected score: yesObserved: May 20, 2026Round: Seed
raisedseed

Open roles (indexed)

No open roles indexed yet.

Public index
91Activity 87/100Strong public activity signal
7D+8 (+9.6%)
30D+28 (+44.4%)
High Confidence

The index price and activity score are algorithmic estimates based on observed public company-level signals. They may be incomplete, stale, or inaccurate and are not investment, legal, tax, or business advice.

Source health

  • githubok
    Last checked Mon, Jun 29, 08:23 AM
  • fundingok
    Last checked Mon, Jun 29, 08:23 AM

    discovery:google:google_cse_quota_exhausted

  • public_page:changelogok
    Last checked Mon, Jun 29, 08:23 AM
  • public_page:careersok
    Last checked Mon, Jun 29, 08:23 AM
  • public_page:customersok
    Last checked Mon, Jun 29, 08:23 AM
  • public_page:pricingok
    Last checked Mon, Jun 29, 08:23 AM
  • public_page:homeok
    Last checked Mon, Jun 29, 08:23 AM
  • public_page:productok
    Last checked Mon, Jun 29, 08:23 AM
  • public_market_enrichmentok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_pressok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_newsok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_jobsok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_homeok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_companyok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_careersok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_blogok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_aboutok
    Last checked Mon, May 11, 09:00 AM
  • public_page:_ok
    Last checked Mon, May 11, 09:00 AM
  • public_page:pressok
    Last checked Sun, May 10, 11:00 PM
  • public_page:newsok
    Last checked Sun, May 10, 11:00 PM
  • public_page:blogok
    Last checked Sun, May 10, 11:00 PM
  • public_page:jobsok
    Last checked Sun, May 10, 11:00 PM
  • public_page:teamok
    Last checked Sun, May 10, 11:00 PM
  • public_page:aboutok
    Last checked Sun, May 10, 11:00 PM

Signal timeline

33 dated public signals · newest on the right

Funding
Hiring
Product
Code
Press
Company
Other
Sep 6, 2024Aug 17, 2025Jul 28, 2026
Funding (3)Hiring (3)Product (4)Code (5)Press (6)Company (8)Other (4)

Signal breakdown

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

Public source summary

Total evidence rows
33
Latest evidence
Thu, Jul 2, 03:46 PM

Source types found

about_pageblogcareers_pagecompany_sitefounderfundingfunding_articlegithubhiringnewsofficial_siteotherpressproduct

Strongest / recent news-style rows

  • Quixxt's UI components | 21st

    Customers · Thu, Jul 2, 03:46 PM · confidence 70%high quality

  • Plans & Pricing | 21st

    Pricing · Thu, Jul 2, 03:46 PM · confidence 90%high quality

  • 21st: Crafted React components and templates that fight AI slop

    Press · Thu, Jul 2, 03:45 PM · confidence 70%high quality

Public signal timeline

Newest first · 33 event(s)

1
Thu, Jul 2, 03:46 PM · product · 70% · publichigh qualityQuixxt's UI components | 21st

Source: Customers

Browse Quixxt's open-source UI components on 21st.dev.

Source ↗
2
Thu, Jul 2, 03:46 PM · product · 90% · publichigh qualityPlans & Pricing | 21st

Source: Pricing

Learn about 21st.dev pricing plans. Explore our products, compare key features, and choose the right plan for your creative workflow.

Source ↗
3
Thu, Jul 2, 03:45 PM · news · 70% · publichigh quality21st: Crafted React components and templates that fight AI slop

Source: Press

A community registry of hand-crafted React components and templates. Start from real, polished UI instead of the bland AI average, and ship products that look like you, not everyone else.

Source ↗
4
Thu, Jul 2, 03:45 PM · blog · 90% · publichigh qualityBlog | 21st

Source: Blog

Guides, agent templates, and incident reports from the 21st.dev team - learn how to build and deploy AI agents with 21st SDK and Claude Code.

Source ↗
5
Thu, Jul 2, 03:45 PM · hiring · 70% · publichigh quality21st: Crafted React components and templates that fight AI slop

Source: Jobs page

A community registry of hand-crafted React components and templates. Start from real, polished UI instead of the bland AI average, and ship products that look like you, not everyone else.

Source ↗
6
Thu, Jul 2, 03:45 PM · careers_page · 70% · publichigh qualitycareers fesinstitute's UI components | 21st

Source: Careers page

Browse careers fesinstitute's open-source UI components on 21st.dev.

Source ↗
7
Mon, Jun 29, 08:23 AM · funding · 98% · publichigh qualityPallet uses AI to bring logistics into the 21st century

Source: techcrunch

Pallet uses AI to bring logistics into the 21st century https://techcrunch.com/2024/10/02/pallet-uses-ai-to-bring-logistics-into-the-21st-century/

Source ↗
8
Mon, Jun 29, 08:23 AM · funding · 98% · publichigh qualityIntegrate raises $17M to move defense project management into the 21st century

Source: techcrunch

Integrate raises $17M to move defense project management into the 21st century https://techcrunch.com/2026/02/11/integrate-raises-17m-to-move-defense-project-management-into-the-21st-century/

Source ↗
9
Mon, Jun 29, 08:23 AM · official_site · 75% · publichigh qualityChangelog | 21st

Source: official_site

Changelog | 21st | 21st Right-Click to open brand menu Right-Click to open brand menu Home Components Magic Inspiration Beta Creators Pricing More Global search... ⌘ K Changelog April 9, 2026 v0.0.88 v0.0.88 What's New Improvements & Fixes Stream wed…

Source ↗
10
Mon, Jun 29, 08:23 AM · official_site · 75% · publichigh quality21st.dev - Crafted React components and templates, not AI slop

Source: official_site

K Home Explore Components Themes Templates MCP Build Magic Chat Build something beautiful Thousands of components and templates from the community. Find the exact one with full filters. K Advanced search filters Browse Components Templates MCP Themes Bookmark…

Source ↗
11
Mon, Jun 29, 08:23 AM · official_site · 75% · publichigh qualitycareers fesinstitute's UI components | 21st

Source: official_site

careers fesinstitute's UI components | 21st K Home Explore Components Themes Templates MCP Build Magic Chat Components / ... Search K Components / careers Search K CF careers fesinstitute @ careers 0 components 0 followers 0 following Components 0 Themes…

Source ↗
12
Mon, Jun 29, 08:23 AM · official_site · 75% · publichigh qualityHigh Lander Product's UI components | 21st

Source: official_site

High Lander Product's UI components | 21st K Home Explore Components Themes Templates MCP Build Magic Chat Components / ... Search K Components / product Search K HLP High Lander Product @ product 0 components 0 followers 0 following Components 0 Themes…

Source ↗
13
Mon, Jun 29, 08:23 AM · official_site · 75% · publichigh qualityQuixxt's UI components | 21st

Source: official_site

Quixxt's UI components | 21st K Home Explore Components Themes Templates MCP Build Magic Chat Components / ... Search K Components / customers Search K Q Quixxt @ customers 0 components 0 followers 0 following Components 0 Themes 0 Bookmarks 0 / No compo…

Source ↗
14
Wed, May 20, 05:29 PM · company_site · 85% · verified_publichigh quality21st.dev

Official homepage for agent registry and UI tools.

Source ↗
15
Wed, May 20, 05:29 PM · funding_article · 88% · verified_publichigh qualityOur Story | 21st

Founders state they got into Y Combinator W26; no public round size on company site.

Source ↗
16
Wed, May 20, 05:29 PM · press · 85% · verified_publichigh quality21st Jobs

Public jobs/community hiring surface.

Source ↗
17
Mon, May 11, 09:00 AM · blog · 90% · publichigh qualityNews — 21st

Source: Blog / news

What the UI crowd is reading. Links, discussions and launches from the 21st community.

Source ↗
18
Mon, May 11, 09:00 AM · about_page · 70% · publichigh qualityspring is here's UI components | 21st

Source: About / company

Browse spring is here's open-source UI components on 21st.dev.

Source ↗
19
Sun, May 10, 11:00 PM · product · 70% · publichigh quality21st: Infrastructure and UI building blocks for the agentic internet

Source: Customers

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Source ↗
20
Sun, May 10, 11:00 PM · product · 70% · publichigh qualityDiscover community-made UI components | 21st

Source: Pricing

Explore, copy, and remix thousands of high-quality React components published to the 21st.dev Community by designers and developers.

Source ↗
21
Sun, May 10, 11:00 PM · news · 70% · publichigh quality21st: Infrastructure and UI building blocks for the agentic internet

Source: Press

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Source ↗
22
Sun, May 10, 11:00 PM · news · 90% · publichigh qualityNews — 21st

Source: News

What the UI crowd is reading. Links, discussions and launches from the 21st community.

Source ↗
23
Sun, May 10, 11:00 PM · careers_page · 70% · publichigh quality21st: Infrastructure and UI building blocks for the agentic internet

Source: Careers page

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Source ↗
24
Sun, May 10, 11:00 PM · founder · 70% · publichigh quality21st: Infrastructure and UI building blocks for the agentic internet

Source: Team page

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Source ↗
25
Sun, May 10, 11:00 PM · about_page · 70% · publichigh quality21st: Infrastructure and UI building blocks for the agentic internet

Source: About page

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Source ↗
26
Sun, May 10, 11:00 PM · official_site · 90% · publichigh quality21st.dev — AI Agent Registry, UI Components & Developer Tools for the Agentic Internet

Source: Homepage

Ship AI-powered products faster with 21st.dev. Browse the open AI agent registry, discover ready-to-use agent configs for Claude Managed Agents, copy React UI components, and build with the Agents SDK.

Source ↗
27
Mon, Jun 29, 08:23 AM · github · 55% · publicmedium quality@21st-sdk/node

Source: npm_registry

Server-side Node.js SDK for 21st Agents

Source ↗
28
Mon, Jun 29, 08:23 AM · github · 55% · publicmedium quality@21st-sdk/cli

Source: npm_registry

CLI for deploying AI agents to 21st Agents

Source ↗
29
Mon, Jun 29, 08:23 AM · github · 55% · publicmedium quality@21st-sdk/nextjs

Source: npm_registry

Next.js integration for 21st Agents chat

Source ↗
30
Mon, Jun 29, 08:23 AM · github · 55% · publicmedium quality@21st-sdk/react

Source: npm_registry

React components for 21st Agents chat UIs

Source ↗
31
Mon, Jun 29, 08:23 AM · github · 55% · publicmedium quality@21st-sdk/agent

Source: npm_registry

Define AI agents and tools with full type inference for 21st Agents

Source ↗
32
Mon, Jun 29, 08:23 AM · other · 50% · publicmedium quality21st

Source: wikipedia

Source ↗
33
Mon, Jun 29, 08:23 AM · other · 50% · publicmedium quality21st century

Source: wikipedia

Source ↗

Official / company site

7 row(s)

The company's own site — the authoritative description of what they sell and to whom. Marketing-controlled, so treat claims as positioning rather than verified traction.

official_site·Mon, Jun 29, 08:23 AM·Confidence 75%high qualitypublic
Changelog | 21st

Changelog | 21st | 21st Right-Click to open brand menu Right-Click to open brand menu Home Components Magic Inspiration Beta Creators Pricing More Global search... ⌘ K Changelog April 9, 2026 v0.0.88 v0.0.88 What's New Improvements & Fixes Stream wed…

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Mon, Jun 29, 08:23 AM·Confidence 75%high qualitypublic
21st.dev - Crafted React components and templates, not AI slop

K Home Explore Components Themes Templates MCP Build Magic Chat Build something beautiful Thousands of components and templates from the community. Find the exact one with full filters. K Advanced search filters Browse Components Templates MCP Themes Bookmark…

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Mon, Jun 29, 08:23 AM·Confidence 75%high qualitypublic
careers fesinstitute's UI components | 21st

careers fesinstitute's UI components | 21st K Home Explore Components Themes Templates MCP Build Magic Chat Components / ... Search K Components / careers Search K CF careers fesinstitute @ careers 0 components 0 followers 0 following Components 0 Themes…

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Mon, Jun 29, 08:23 AM·Confidence 75%high qualitypublic
High Lander Product's UI components | 21st

High Lander Product's UI components | 21st K Home Explore Components Themes Templates MCP Build Magic Chat Components / ... Search K Components / product Search K HLP High Lander Product @ product 0 components 0 followers 0 following Components 0 Themes…

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Mon, Jun 29, 08:23 AM·Confidence 75%high qualitypublic
Quixxt's UI components | 21st

Quixxt's UI components | 21st K Home Explore Components Themes Templates MCP Build Magic Chat Components / ... Search K Components / customers Search K Q Quixxt @ customers 0 components 0 followers 0 following Components 0 Themes 0 Bookmarks 0 / No compo…

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
company_site·Wed, May 20, 05:29 PM·Confidence 85%high qualityverified_public
21st.dev

Official homepage for agent registry and UI tools.

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Sun, May 10, 11:00 PM·Confidence 90%high qualitypublic
21st.dev — AI Agent Registry, UI Components & Developer Tools for the Agentic Internet

Ship AI-powered products faster with 21st.dev. Browse the open AI agent registry, discover ready-to-use agent configs for Claude Managed Agents, copy React UI components, and build with the Agents SDK.

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗

News

13 row(s)

Third-party press coverage. Independent reporting corroborates company claims; repeated coverage across outlets is a momentum signal.

product·Thu, Jul 2, 03:46 PM·Confidence 70%high qualitypublic
Quixxt's UI components | 21st

Browse Quixxt's open-source UI components on 21st.dev.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
product·Thu, Jul 2, 03:46 PM·Confidence 90%high qualitypublic
Plans & Pricing | 21st

Learn about 21st.dev pricing plans. Explore our products, compare key features, and choose the right plan for your creative workflow.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
news·Thu, Jul 2, 03:45 PM·Confidence 70%high qualitypublic
21st: Crafted React components and templates that fight AI slop

A community registry of hand-crafted React components and templates. Start from real, polished UI instead of the bland AI average, and ship products that look like you, not everyone else.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
press·Wed, May 20, 05:29 PM·Confidence 85%high qualityverified_public
21st Jobs

Public jobs/community hiring surface.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
about_page·Mon, May 11, 09:00 AM·Confidence 70%high qualitypublic
spring is here's UI components | 21st

Browse spring is here's open-source UI components on 21st.dev.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
product·Sun, May 10, 11:00 PM·Confidence 70%high qualitypublic
21st: Infrastructure and UI building blocks for the agentic internet

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
product·Sun, May 10, 11:00 PM·Confidence 70%high qualitypublic
Discover community-made UI components | 21st

Explore, copy, and remix thousands of high-quality React components published to the 21st.dev Community by designers and developers.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
news·Sun, May 10, 11:00 PM·Confidence 70%high qualitypublic
21st: Infrastructure and UI building blocks for the agentic internet

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
news·Sun, May 10, 11:00 PM·Confidence 90%high qualitypublic
News — 21st

What the UI crowd is reading. Links, discussions and launches from the 21st community.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
founder·Sun, May 10, 11:00 PM·Confidence 70%high qualitypublic
21st: Infrastructure and UI building blocks for the agentic internet

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
about_page·Sun, May 10, 11:00 PM·Confidence 70%high qualitypublic
21st: Infrastructure and UI building blocks for the agentic internet

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
other·Mon, Jun 29, 08:23 AM·Confidence 50%medium qualitypublic
21st

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
other·Mon, Jun 29, 08:23 AM·Confidence 50%medium qualitypublic
21st century

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗

Funding / news

3 row(s)

Funding announcements and investor-database records. The strongest public signal of capitalization: round, amount, and syndicate quality when disclosed.

funding·Mon, Jun 29, 08:23 AM·Confidence 98%high qualitypublic
Pallet uses AI to bring logistics into the 21st century

Pallet uses AI to bring logistics into the 21st century https://techcrunch.com/2024/10/02/pallet-uses-ai-to-bring-logistics-into-the-21st-century/

Why it matters: Funding signal — Series A per this source; verify against the linked original before relying on it.

Open source ↗
funding·Mon, Jun 29, 08:23 AM·Confidence 98%high qualitypublic
Integrate raises $17M to move defense project management into the 21st century

Integrate raises $17M to move defense project management into the 21st century https://techcrunch.com/2026/02/11/integrate-raises-17m-to-move-defense-project-management-into-the-21st-century/

Why it matters: Funding signal — capitalization evidence; check the linked source for round, amount, and investors.

Open source ↗
funding_article·Wed, May 20, 05:29 PM·Confidence 88%high qualityverified_public
Our Story | 21st

Founders state they got into Y Combinator W26; no public round size on company site.

Why it matters: Funding signal — Seed per this source; verify against the linked original before relying on it.

Open source ↗

Hiring

3 row(s)

Open roles and careers pages. Active hiring implies runway to spend and shows where the company is investing (engineering vs GTM vs ops).

hiring·Thu, Jul 2, 03:45 PM·Confidence 70%high qualitypublic
21st: Crafted React components and templates that fight AI slop

A community registry of hand-crafted React components and templates. Start from real, polished UI instead of the bland AI average, and ship products that look like you, not everyone else.

Why it matters: Hiring signal — open roles imply runway to spend and show where the company is investing.

Open source ↗
careers_page·Thu, Jul 2, 03:45 PM·Confidence 70%high qualitypublic
careers fesinstitute's UI components | 21st

Browse careers fesinstitute's open-source UI components on 21st.dev.

Why it matters: Hiring signal — open roles imply runway to spend and show where the company is investing.

Open source ↗
careers_page·Sun, May 10, 11:00 PM·Confidence 70%high qualitypublic
21st: Infrastructure and UI building blocks for the agentic internet

Ship AI-powered products faster with 21st Agents SDK, open-source UI components, and developer tools built for the agentic internet.

Why it matters: Hiring signal — open roles imply runway to spend and show where the company is investing.

Open source ↗

GitHub

5 row(s)

Public engineering activity. Sustained commits, releases, and stars indicate real product development and, for dev tools, developer adoption.

github·Mon, Jun 29, 08:23 AM·Confidence 55%medium qualitypublic
@21st-sdk/node

Server-side Node.js SDK for 21st Agents

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 08:23 AM·Confidence 55%medium qualitypublic
@21st-sdk/cli

CLI for deploying AI agents to 21st Agents

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 08:23 AM·Confidence 55%medium qualitypublic
@21st-sdk/nextjs

Next.js integration for 21st Agents chat

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 08:23 AM·Confidence 55%medium qualitypublic
@21st-sdk/react

React components for 21st Agents chat UIs

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 08:23 AM·Confidence 55%medium qualitypublic
@21st-sdk/agent

Define AI agents and tools with full type inference for 21st Agents

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗

Blog

2 row(s)

Company blog and newsletters. Shipping cadence and technical depth of posts hint at product velocity and team quality.

blog·Thu, Jul 2, 03:45 PM·Confidence 90%high qualitypublic
Blog | 21st

Guides, agent templates, and incident reports from the 21st.dev team - learn how to build and deploy AI agents with 21st SDK and Claude Code.

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:00 AM·Confidence 90%high qualitypublic
News — 21st

What the UI crowd is reading. Links, discussions and launches from the 21st community.

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗

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