Jam.gg
Jam.gg, founded in Paris in 2020 as Piepacker and rebranded in 2022, built a browser-based social cloud gaming platform for playing retro and indie multiplayer games with friends with no download or install, on patented streaming technology the company said cut bandwidth requirements by roughly 15x. It passed 8 million users before pivoting to selling its cloud gaming technology B2B to game developers and publishers. Backed by Makers Fund, Serena Capital, LEGO Ventures, Kima Ventures and Kickstarter (~$15.4M raised) and a Y Combinator W20 company. Jam.gg never published an HTTP API: its developer surface was a native game-integration SDK plus a Compose Multiplatform virtual gamepad library, both shipped from the GitHub organization still named piepacker. Y Combinator's company directory now lists Jam.gg as Inactive, noting the business split into two entities in 2023 with Onibi emerging separately; the jam.gg web property no longer completes a TLS handshake and piepacker.com has left DNS.
Jam.gg is tracked in the API Evangelist network. This page is the human-readable profile that sits on top of the machine-readable index we maintain at apis.io.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Why this profile is thin
Jam.gg never shipped an HTTP API, and the company is now listed Inactive by Y Combinator — its own web property cannot complete a TLS handshake on either host (jam.gg answers the ClientHello with TLS alert 80 internal_error from Netlify/AWS Global Accelerator, www.jam.gg answers with alert 40 handshake_failure from the Webflow proxy), piepacker.com has left DNS, and no api/docs/developers subdomain resolves, so the only reachable artifacts are the first-party SDK repositories on GitHub.
This is an honest zero, not a gap in our research. Jam.gg does not appear to expose an API, so there is nothing here for us to index and nothing for them to fix.
What we probed
http://jam.gg/→ HTTP 301https://jam.gg/→ HTTP 0https://www.jam.gg/→ HTTP 0https://www.ycombinator.com/companies/jam-gg→ HTTP 200https://github.com/piepacker→ HTTP 200https://repo1.maven.org/maven2/io/github/piepacker/jampadcompose/maven-metadata.xml→ HTTP 200
Jam.gg is in the network as a tracked entity. We haven't yet indexed a public API surface for it — when one is published, the artifacts, score, and agent-readiness read will appear here automatically. The source repository is where that profile is built.
← All providers · Data indexed from github.com/api-evangelist/jam-gg · machine-readable index on apis.io
This is an independent, third-party profile of Jam.gg, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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