We build the tools we need

Every product here began as a problem we kept hitting while building with AI agents. Nobody had solved it well, so we did.

proto[code]

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proto[code]: Agents aren’t following your code standards. code.prototypd.dev proto[code] · code standards for every agent Stop correcting AI-generated code. Make every agent follow your standards from the start.

Agents manage tasks & search for standards in different ways, proto[code] manages that for you.

Halden Freight · StandardsChoose an agent
Askedcode_standards_search("error responses", tech: ["ASP.NET Core"])
Served

API errors return ProblemDetails

ASP.NET Core · Version 3 · Owner: platform team

Every non-2xx response from a controller returns ProblemDetails with a stable type URI. Never return a bare string or an exception message.

return Problem(type: "/errors/lane-not-priced",
    statusCode: 422, detail: lane.Id);
Same standard, version 3, served to Claude Code before it writes.

proto[docs]

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What depends on this? | proto[docs] architecture documentation docs.prototypd.dev What depends on this? | proto[docs] architecture documentation Your architecture, documented for you. proto[docs] writes your architecture documentation from what's really running and keeps it current as your systems change.

Explore a shipment service from system context down to source code to see how its architecture connects.

Halden Freight · Production · shipment-apiZoom level
shipment-api: 4 callers, 5 dependencies, each backed by the traces that showed it.