sceptre-file-resolver
A Sceptre resolver to retrieve file content
Decision gist · record as of 2026-08-14
Yes, if you use Sceptre and need to inject structured file contents (JSON, YAML) or remote files into CloudFormation parameters. The low install friction, active maintenance, permissive license, and zero known vulnerabilities make it a safe addition. Not relevant if you only use plain-text file injection or do not use Sceptre.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires sceptre to be installed and configured; the resolver is registered as a Sceptre plugin and only works within Sceptre stack configurations.
- Low install friction with a pure-Python wheel distribution.
- Actively maintained as of 2026-08-10 with no known vulnerabilities.
License · maintenance · safety
Apache2 (permissive) — Licensed under Apache2 (permissive), allowing use in commercial and private projects with minimal restrictions.
last release 2022-03-07 (1621 days) · last repo commit 2026-08-10 · 2 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 115,083 downloads/mo, #12,270 on PyPI
Alternatives
Verify before relying
pip install sceptre-file-resolver
# In a Sceptre config YAML:
parameters:
config_data: !file path/to/config.json
tags: !file https://example.com/tags.yaml- Whether remote file fetching supports authentication (API keys, headers, or credentials).
- Error handling behavior when files are missing, malformed, or network requests fail.
- Support for Python versions beyond 3.6 and 3.7 (classifiers list only those two).
What it is and what it does
This package extends Sceptre, a CloudFormation orchestration tool, with a file resolver that injects file contents directly into stack parameters. Unlike Sceptre's built-in file_contents resolver, which only handles plain text, this resolver automatically detects file type by extension and parses JSON and YAML files into structured objects, passing them to parameters as native types. It also supports fetching files from remote URLs via HTTP, making it useful for pulling configuration from S3 buckets or other web sources.
You use it by adding a YAML tag `!file` to parameter definitions in your Sceptre stack configs, pointing to either a local file path or a URL. The resolver handles the fetch and parse transparently, so your CloudFormation templates receive properly typed data without manual conversion steps.
Use it for
- Load JSON configuration objects from S3 into CloudFormation stack parameters without manual parsing.
- Inject YAML-formatted tag lists or metadata into stack parameters from a shared repository file.
- Fetch remote policy documents or template snippets from a URL and pass them as strings to parameters.
- Parameterize CloudFormation stacks with structured data from local files during deployment.
- Centralize configuration management by referencing external JSON/YAML files in Sceptre stack definitions.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you use Sceptre and need to inject structured file contents (JSON, YAML) or remote files into CloudFormation parameters.
The low install friction, active maintenance, permissive license, and zero known vulnerabilities make it a safe addition. Not relevant if you only use plain-text file injection or do not use Sceptre.
Install
sceptre-file-resolver on PyPI
Before you install
Low install friction with a pure-Python wheel distribution. Actively maintained as of 2026-08-10 with no known vulnerabilities. Depends on requests and sceptre, both widely used packages.
Requires sceptre to be installed and configured; the resolver is registered as a Sceptre plugin and only works within Sceptre stack configurations.
License in practice
Licensed under Apache2 (permissive), allowing use in commercial and private projects with minimal restrictions.
Quickstart
pip install sceptre-file-resolver
# In a Sceptre config YAML:
parameters:
config_data: !file path/to/config.json
tags: !file https://example.com/tags.yamlVerify before relying
- Whether remote file fetching supports authentication (API keys, headers, or credentials).
- Error handling behavior when files are missing, malformed, or network requests fail.
- Support for Python versions beyond 3.6 and 3.7 (classifiers list only those two).
Package facts
| License | Apache2 permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesrequestssceptre |
| Maintenance | Actively maintained 1,621 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 115,083 / month, #12,270 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Environment :: ConsoleIntended Audience :: DevelopersNatural Language :: EnglishProgramming Language :: Python :: 3.6Programming Language :: Python :: 3.7 |
Evidence: sceptre_file_resolver-1.0.6-py2.py3-none-any.whl
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