Open source at Fastly
We have a lot of code and we love to see people using it to do great things. All the code examples you can find on this website are available to use with permissive licences, and larger codebases are hosted on GitHub. Check out our GitHub organization profile, or take a look at some of our releases here.
Featured projects
Our most high profile open source projects are well supported and continue to be actively developed:
fastly/cli
Build, deploy and configure Fastly services from your terminalfastly/Viceroy
Viceroy provides local testing for developers working with Compute.fastly/fastly-dashboards
A comprehensive, out-of-the-box monitoring and alerting solution for Fastly services.fastly/mcp
Model Context Protocol (MCP) server for AI-powered Fastly CDN management.fastly/pushpin
A proxy server for adding push to your API, used at the core of Fastly's Fanout servicefastly/vscode-fastly-vcl
A Visual Studio Code extension which brings full IDE support for Fastly Varnish Configuration Language (VCL) to Visual Studio Code, from syntax highlighting to intelligent diagnostics
All projects
See understanding topics and support levels for more details of how we organize and support our open source code.
| Repository | Type | Support level |
|---|---|---|
cliBuild, deploy and configure Fastly services from your terminal | Tool | Product |
compute-sdk-goGo SDK for building Fastly Compute applications | Compute SDK | Product |
js-compute-runtimeJavaScript SDK and runtime for building Fastly Compute applications | Compute SDK | Product |
ViceroyViceroy provides local testing for developers working with Compute. | Tool | Product |
compute-actionsGitHub Actions for building on Fastly Compute. | Plugin | OSS Tier 1 |
compute-hibp-filterFastly Compute enrichment to detect compromised passwords | Demo | OSS Tier 1 |
compute-rust-opentelemetry-exporterExport OpenTelemetry traces from your Rust Compute services | Compute library | OSS Tier 1 |
esiA streaming Edge Side Includes parser and executor designed for Fastly Compute. | Compute library | OSS Tier 1 |
expresslyExpress style router for Fastly Compute | Compute library | OSS Tier 1 |
fastly-dashboardsA comprehensive, out-of-the-box monitoring and alerting solution for Fastly services. | Tool | OSS Tier 1 |
fastly-exporterA Prometheus exporter for the Fastly Real-time Analytics API | Tool | OSS Tier 1 |
fastly-magentoMagento Extension for working with the Fastly Content Delivery Network | Plugin | OSS Tier 1 |
fastly-magento2Module for integrating Fastly CDN with Magento 2 installations | Plugin | OSS Tier 1 |
go-fastlyA Fastly API client for Go | API client | OSS Tier 1 |
insights.jsReal user monitoring of network timing signals using the Open Insights framework | Plugin | OSS Tier 1 |
mcpModel Context Protocol (MCP) server for AI-powered Fastly CDN management. | Tool | OSS Tier 1 |
terraform-provider-fastlyTerraform Fastly provider | Plugin | OSS Tier 1 |
CaptchaOnEdgeA Rust app that generates a captcha and saves a signed token in a cookie which is used to verify the captcha when it is resolved. It's completely stateless and runs entirely on Fastly's Compute serverless platform | Demo | OSS Tier 2 |
compute-js-apiclaritycompute-js-apiclarity | Tool | OSS Tier 2 |
compute-js-authOAuth 2.0 implementation for Fastly Compute, in JavaScript | Demo | OSS Tier 2 |
compute-js-esiAn implementation of ESI (Edge Side Includes) for Fastly Compute JavaScript | Compute library | OSS Tier 2 |
compute-js-opentelemetryAn implementation of OpenTelemetry for Fastly Compute | Compute library | OSS Tier 2 |
compute-js-static-publishStatic Publisher for Fastly Compute JavaScript | Tool | OSS Tier 2 |
compute-ll-hlsFastly Compute application for LL-HLS playlist manipulation. | Demo | OSS Tier 2 |
compute-rust-sentrySend error reports from Rust Fastly Compute services to Sentry. | Compute library | OSS Tier 2 |
compute-segmented-cachingSegmented Caching as a Fastly Compute app | Demo | OSS Tier 2 |
demo-fiddle-ciUsing Fastly Fiddle to enable CI testing of Fastly services | Demo | OSS Tier 2 |
edgeml-recommenderPOC: similarity search recommendation engine at the edge using only Fastly Compute & Rust | Demo | OSS Tier 2 |
fanout-chat-demoDemonstrates the use of Fastly Fanout to maintain a chat system and send update messages across devices in real time. | Demo | OSS Tier 2 |
fanout-compute-js-demoFanout Fastly Compute JavaScript demo | Demo | OSS Tier 2 |
fanout-leaderboard-demoLeaderboard Demo for Fastly Fanout | Demo | OSS Tier 2 |
fastly-goA Fastly API client for Go | API client | OSS Tier 2 |
fastly-jsA Fastly API client for JavaScript | API client | OSS Tier 2 |
fastly-perlA Fastly API client for Perl | API client | OSS Tier 2 |
fastly-phpA Fastly API client for PHP | API client | OSS Tier 2 |
fastly-pyA Fastly API client for Python | API client | OSS Tier 2 |
fastly-rubyA Fastly API client for Ruby | API client | OSS Tier 2 |
fastly-rustA Rust Fastly API client library. | API client | OSS Tier 2 |
fastly-typo3Extension for integrating Fastly CDN with TYPO3 installations | Plugin | OSS Tier 2 |
graphql-compute-exampleAn example of using GraphQL inside Fastly Compute | Demo | OSS Tier 2 |
http-compute-jsNode.js-compatible request and response objects | Compute library | OSS Tier 2 |
js-compute-testingWrite JavaScript tests from Node.js, against a local or remote Fastly Compute application | Tool | OSS Tier 2 |
js-serve-grip-expresslyExtension of js-serve-grip to work with Expressly | Compute library | OSS Tier 2 |
open-insights-provider-fastlyAn open-insights provider for Fastly | Plugin | OSS Tier 2 |
remix-compute-jsRemix for Fastly Compute JavaScript | Plugin | OSS Tier 2 |
sigsci-splunk-appSplunk app for Fastly (Signal Sciences) | Plugin | OSS Tier 2 |
sse-demoA demo of a streaming data use case for Fastly | Demo | OSS Tier 2 |
url-shortenerA tool makes your message easier to read | Demo | OSS Tier 2 |
vscode-fastly-vclA Visual Studio Code extension which brings full IDE support for Fastly Varnish Configuration Language (VCL) to Visual Studio Code, from syntax highlighting to intelligent diagnostics | Plugin | OSS Tier 2 |
wafefficacyMeasures the effectiveness of your Web Application Firewall (WAF) | Tool | OSS Tier 2 |
WordPress-PluginThe Official Fastly WordPress Plugin | Plugin | OSS Tier 2 |
Understanding topics and support levels
We use GitHub topics to help group our open source repositories into themes:
- Tools: These projects are tools you can run in your own environment, usually to help you interact with Fastly.
- Plugins: Sometimes we release code that can be used with third-party products to help them integrate with Fastly.
- Demos: Applications that you can run on or with Fastly, demonstrating creative uses of the Fastly platform.
- API clients: The Fastly API is accessible over HTTP and therefore any HTTP client (e.g. curl or Postman) will work, but we also provide dedicated adapters for a variety of languages.
- Compute Starter kits: The Fastly Compute platform allows you to run your code on our giant edge network in a variety of languages. Starter kits offer complete example Compute applications that are great for scaffolding new projects.
- Compute SDKs: Run within Fastly Compute and allow you to access platform features from your preferred language. Use our SDK comparison table to understand the differences between SDKs.
- Compute libraries: We've made and open sourced code that you can run on our Compute platform, to help make complex tasks easy.
We also use topics to help you understand how we support and work with the community, and what minimum expectations you can have of our open source repositories:
fastly-product | fastly-oss-tier1 | fastly-oss-tier2 | |
|---|---|---|---|
| Part of Fastly's official products | Actively developed | Maintenance mode | |
| Support options | |||
| Community support via Fastly Connect | ✅ | ✅ | ✅ |
| Public issue tracker | ✅ | ✅ | |
| Supported by Fastly customer support | ✅ | ||
| Documented in Fastly docs | ✅ | ||
| Stability | |||
| Development cadence | Continual | Regular | Sporadic |
| Critical dependency updates | Proactive | Proactive | Reactive |
| Critical fixes | ✅ | ✅ | |
| Works in Fiddle if applicable | ✅ | ✅ | |
| Maintains compatibility with Fastly platform | ✅ | ✅ | |
| Compliance | |||
| Complies with retirement policy | ✅ |
If a repository is no longer supported at all, we archive it. Archived repositories are not tested and do not receive dependency or security updates.
