1,851 Free APIs — Tensor Vault

Search free public APIs in milliseconds. No JSON. No token waste. Built for humans AND AI agents.

1,851
Free APIs
44
Categories
0.02s
Search Time
35×
Fewer Tokens
$ git clone https://github.com/shivtcdfinance/free-usable-public-api-tensor-vault.git
$ cat tensors/Weather.env # 40 weather APIs. Done.

JSON vs Tensor Vault

❌ Old Way (JSON)

  • 1.5 MB single file
  • Parse all 1,851 before searching
  • ~70,000 tokens per AI query
  • ~2 seconds to search
  • Rebuild entire file on update

✅ Tensor Vault

  • 50 KB per category
  • Grep one file. Done.
  • ~2,000 tokens per AI query
  • 0.02 seconds to search
  • Edit one file on update

For AI Agents

# Claude, GPT, Hermes — load only the category you need
weather_apis = open("tensors/Weather.env").read() # 2K tokens
# vs JSON: json.load(open("api_canon.min.json")) # 70K tokens
View on GitHub Compare with JSON Repo