awslabs/aws-cfn-template-flip

Tool for converting AWS CloudFormation templates between JSON and YAML formats. observed · 2026-10-21

github.com/awslabs/aws-cfn-template-flip · Python · Apache-2.0 (permissive) · archived observed · 2026-10-21

Health v2 · maintenance only

10/100

Activity 89
Release rhythm 8
Longevity 100

Flags: archived

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.

gap_med: n/a
age_days: 3613
days_rel: n/a
days_push: 69
n_releases_24m: 0

Full methodology

Adoption not part of the score

997 stars · 138 forks observed · 2026-10-21

What it is AI-extracted, prompt v1, taxonomy v1, 2026-09-07, confidence 0.96

A command-line tool and Python library that converts AWS CloudFormation templates between JSON and YAML formats, using YAML's short function syntax where possible. It also offers an opinionated cleanup option to tidy up templates during conversion.

Use cases

convert an AWS CloudFormation template from JSON to YAML
convert a CloudFormation YAML template back to JSON
clean up and reformat a messy CloudFormation template
rewrite CloudFormation functions using YAML short syntax
batch-convert CloudFormation templates from a Python script
flip template format without changing the format using no-flip mode

When to choose

you maintain an existing project that already depends on the cfn_flip or cfn_tools APIs
you need a small offline conversion utility for legacy CloudFormation templates pinned to an older release
you want JSON/YAML template conversion with opinionated cleanup in one step and accept the deprecation risk

When to avoid

you are starting a new project - the tool is deprecated with no further releases or security patches
you need supported CloudFormation tooling - prefer the AWS CLI, AWS CDK, or other actively maintained alternatives
you expect bug fixes or issue triage - issues and pull requests are no longer reviewed

Facets

cli-tool · maturity abandoned

yaml cli developer-tools cloud-computing developer-tools infrastructure-as-code python cli cross-platform aws cloudformation cfn template-conversion -yaml-converter deprecated iast

1 source

readme: https://github.com/awslabs/aws-cfn-template-flip · fetched 2026-10-21 · 804f94dff02b

Member repositories

Repository	Role	Health v2
awslabs/aws-cfn-template-flip	main	10

For agents

markdown · JSON · MCP: product_card(name="awslabs/aws-cfn-template-flip")

Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem