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 syncLearn moreFeatured Specs
spec:npm-tanstack--react-router
npm26 days ago
spec:pypi-langgraph-sdk
pypiabout 1 month ago
spec:pypi-streamlit
pypiabout 1 month ago
spec:pypi-pydantic-ai
pypiabout 1 month ago
spec:pypi-openai
pypiabout 1 month ago
spec:pypi-fastmcp
pypiabout 1 month ago
spec:pypi-fastapi
pypiabout 1 month ago
spec:pypi-anthropic
pypiabout 1 month ago
spec:npm-tanstack--react-start
npmabout 1 month ago
spec:npm-react-aria
npmabout 1 month ago
spec:npm-express
npmabout 1 month ago
spec:npm-axios
npmabout 1 month ago
spec:npm-anthropic-ai--sdk
npmabout 1 month ago
spec:npm-svelte
npmabout 1 month ago
spec:npm-lodash
npmabout 1 month ago
spec:maven-apache-spark
mavenabout 1 month ago
spec:npm-react
npmabout 1 month ago
10,000+ specs for popular open-source packages
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