APILog
Global public data & open APIs — demand index catalog
APILog catalogs 273 APIs and datasets across 25 categories — from climate and space to payments and cloud infrastructure. Each entry includes what data you can extract, authentication requirements, update frequency, and a direct link to the source. Use it to discover the right API for your next project, product, or integration.
Carbon Budget Countdown
Remaining CO₂ budget to stay within 1.5°C of warming
NOAA GML
NOAA GMLDaily atmospheric CO₂ concentration measurements from Mauna Loa Observatory in Hawaii, operated by NOAA's Global Monitoring Laboratory.
Global Carbon Project
Global Carbon ProjectAnnual global carbon budget compiled by the Global Carbon Project — fossil fuel emissions, land-use change flux, and sink estimates.
IPCC AR6
IPCC AR6Remaining carbon budget reference values for 1.5°C from the IPCC Sixth Assessment Report, Working Group I (2021).
133.545Gt CO₂
Remaining carbon budget · 50% probability of staying below 1.5°C · linear estimate from IPCC AR6 base (Jan 2023)
275 Gt as of Jan 202351.44% consumed
3y 6mo
Time left at current rate
426.56 ppm
Atmospheric CO₂
1,185 t/s
Global CO₂ emission rate
Source: IPCC AR6 WG1 · Global Carbon Budget 2023 · NOAA GML Mauna Loa Observatory
Carbon Budget Countdown1 / 7
Most-Used APIs
last 7 days1Anthropic API
46.4M
2OpenAI API
43.3M
3Supabase API
30.9M
4Stripe Billing
24.1M
5Stripe API
24.1M
6Google Cloud APIs
19.3M
7Azure REST API
17.2M
8YouTube Data API
10.9M
9AWS SDK
10.0M
10Twilio API
6.6M
11GitHub API
5.4M
12SendGrid API
4.8M
13Discord API
3.6M
14Cloudflare API
3.2M
15HubSpot API
1.6M
Source: npm registry · updated every 12h
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