Rapid Silicon
Rapid Silicon is a fabless semiconductor company founded in 2019 and headquartered in Los Gatos, California, building AI- and intelligent-edge-focused FPGAs and embedded FPGA (eFPGA) IP on an open-source technology base. Its product line covers the Gemini FPGA family, the Vega eFPGA IP core (a customizable, scalable embeddable FPGA fabric from roughly 1.5K to 100K+ logic cells with configurable BRAM and DSP MAC tiles), and the Rapid eFPGA Configurator for self-service eFPGA resource sizing. Design work is done in the Raptor Design Suite, the company's RTL-to-bitstream EDA tool-chain covering simulation, synthesis, placement, routing, bitstream generation and device configuration, released under GPL3 as what the company describes as the first complete commercially available open-source FPGA tool-chain. Rapid Silicon raised a $15M seed round in 2021 and a $30M Series A in January 2023 from Cambium Capital Partners and Chengwei Capital, and is led by chairman and CEO Naveed Sherwani. The company's products are silicon IP and locally installed design software rather than a hosted service, so it publishes no public web API, developer portal or machine-readable API contract; as of 2026-05-25 its rapidsilicon.com website no longer serves company content and redirects to a domain-brokerage page.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
API Evangelist profiles Rapid Silicon the way a machine reads it — 1 machine-readable artifact, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
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. From those artifacts we compute the Kin Score — Rapid Silicon scores 6.1/100 (minimal), with a separate agent-readiness read of 0/100 (human only). 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
Rapid Silicon sells eFPGA IP cores and a GPL3 desktop RTL-to-bitstream tool-chain (Raptor), never a hosted service, and ships no developer program of any kind — and its corporate site is now gone on top of that: since 2026-05-25 rapidsilicon.com 301s to realdha.com, a domain-brokerage listing, and returns 404 for /openapi.json, /llms.txt, every former product and documentation path, and all seven /.well-known/ paths, while a GitHub code search across both the RapidSilicon and os-fpga organizations returns zero OpenAPI or Swagger documents.
This is an honest zero, not a gap in our research. Rapid Silicon 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
https://rapidsilicon.com/→ HTTP 301https://rapidsilicon.com/openapi.json→ HTTP 404https://rapidsilicon.com/llms.txt→ HTTP 404https://rapidsilicon.com/.well-known/agent-card.json→ HTTP 404https://rapidsilicon.com/documentation→ HTTP 404https://github.com/RapidSilicon→ HTTP 200
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-01 · rubric v0.18.0
Put this on your own site. The badge is drawn live from Rapid Silicon's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/rapid-silicon/"
title="Rapid Silicon on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/rapid-silicon.svg"
alt="Rapid Silicon Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/rapid-silicon/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/rapid-silicon/"
title="Rapid Silicon on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/rapid-silicon/card.svg"
alt="Rapid Silicon Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Rapid Silicon
Each block below is one kind of artifact we hold for Rapid Silicon. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
Security Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Rapid Silicon — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
← All providers · Data indexed from github.com/api-evangelist/rapid-silicon · machine-readable index on apis.io
This is an independent, third-party profile of Rapid Silicon, 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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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.