2S
2s — the (most) everything API
Multi-domain data APIs: SEC filings, crypto addresses, CVEs, weather, geocoding, plus AI chat and agent storage
575 operations5 schemas1 revision
Changes
Full historySource
View schema- Spec
- OpenAPI 3.1.0
- Document
- 2s.io · JSON, 1.0 MB
- Retrieved
- Oct 19, 2026, 12:41 UTC
- Digest
- da4c5caf686e
For agents
Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.
curl https://skmtc.dev/2s-io/apis/2s-the-most-everything-api.mdcurl https://skmtc.dev/2s-io/apis/2s-the-most-everything-api/llms.txt