Join us for DevCon in New York. Nov 18 - 19
  • logo
  • Home
  • Registry
  • About
  • Blog
  • Community
  • Docs

Spec Registry

Help agents understand your dependencies

Install version-accurate specs that give agents guidance on every library in your project.

npx @tessl/cli@latest registry sync
Learn more

Featured Specs

spec:npm-tanstack--react-router
npm•30 days ago
spec:pypi-langgraph-sdk
pypi•about 1 month ago
spec:pypi-streamlit
pypi•about 2 months ago
spec:pypi-pydantic-ai
pypi•about 2 months ago
spec:pypi-openai
pypi•about 2 months ago
spec:pypi-fastmcp
pypi•about 2 months ago
spec:pypi-fastapi
pypi•about 2 months ago
spec:pypi-anthropic
pypi•about 2 months ago
spec:npm-tanstack--react-start
npm•about 2 months ago
spec:npm-react-aria
npm•about 2 months ago
spec:npm-express
npm•about 2 months ago
spec:npm-axios
npm•about 2 months ago
spec:npm-anthropic-ai--sdk
npm•about 2 months ago
spec:npm-svelte
npm•about 2 months ago
spec:npm-lodash
npm•about 2 months ago
spec:maven-apache-spark
maven•about 2 months ago
spec:npm-react
npm•about 2 months ago
10,000+ specs for popular open-source packages

Socials

  • LinkedIn
  • X
  • Discord

Tessl AI Ltd, 210 Pentonville Road, London, UK

Company

  • Careers
  • Press Kit
  • Cookie Notice and Privacy Policy
  • Terms of Service