JMESPath

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2451 stars · 204 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

JMESPath is a declarative query language for extracting and transforming elements from JSON documents, with a formal specification and compliance test suite. This is the Python implementation (with sibling libraries in PHP, JavaScript, Lua, and other languages) providing a search API over Python data structures.

Use cases

• extract nested fields from json documents
• query json with a declarative path expression
• filter and project lists of json objects
• parse aws cli json output
• transform json api responses in python
• reuse compiled json queries across documents

When to choose

• you need a standardized, spec-driven JSON query language with compliance tests
• you want declarative extraction from nested JSON without writing imperative code
• you work with AWS tooling, which uses JMESPath natively
• you need implementations across multiple languages with consistent behavior

When to avoid

• you need to query JSON stored in a database rather than in-memory data
• you need full programming constructs like loops or complex conditionals
• your data is XML or another non-JSON format
• you need high-performance querying of very large JSON files

Facets

library · maturity stable

parser json search-engine developer-tools developer-tools data-science apis python php cross-platform json-query-language jmespath data-extraction declarative-query automation

Member repositories

For agents

markdown · JSON · MCP: product_card(name="jmespath/jmespath.py")