OpenAPI 3.1 registry, typed RouteBuilder, schema registry, and document merger for the Suaveplan API. Single source of truth that wires into Hono via OpenAPIRegistry.applyTo(app), eliminating drift between registry introspection and the served /openapi.json.

Documentation tree

emitter — createOpenapiEmitter is the aggregator the spec calls for: it ingests every plugin's manifest, every registered route…
- emitter — createOpenapiEmitter is the aggregator the spec calls for: it ingests every plugin's manifest, every registered route…
endpoints — endpoints mounts the four HTTP routes the design doc reserves for the OpenAPI surface — /openapi.json, `/openapi.ya…
- endpoints — endpoints mounts the four HTTP routes the design doc reserves for the OpenAPI surface — /openapi.json, `/openapi.ya…
error-codes — Defines the stable error-code registry and typed error class for @suaveplan/api-openapi. Every public failure path in…
- error-codes — Defines the stable error-code registry and typed error class for @suaveplan/api-openapi. Every public failure path in…
merger — OpenAPI document transforms — merge, prefix, filter, redact internal routes. Multi-plugin servers compose the final pub…
- merger — OpenAPI document transforms — merge, prefix, filter, redact internal routes. Multi-plugin servers compose the final pub…
namespacing — The namespacing module turns a plugin's structural identity (name, displayName) plus a registered route's `(metho…
- namespacing — The namespacing module turns a plugin's structural identity (name, displayName) plus a registered route's `(metho…
plugin-integration — definePluginRoutes is the single helper plugins call from their onInit to register routes. Every call atomically up…
- plugin-integration — definePluginRoutes is the single helper plugins call from their onInit to register routes. Every call atomically up…
registry — Centralised OpenAPI 3.1 registry that holds info, servers, securitySchemes, tags, and routes. Acts as the sin…
- registry — Centralised OpenAPI 3.1 registry that holds info, servers, securitySchemes, tags, and routes. Acts as the sin…
route-factory — Typed route construction utilities for @hono/zod-openapi. The RouteBuilder is a fluent generic that threads `TParam…
- route-factory — Typed route construction utilities for @hono/zod-openapi. The RouteBuilder is a fluent generic that threads `TParam…
schema-registry — Instance-based registry for reusable Zod schemas. Each schema is bound to a stable name and may be derived into related…
- common-schemas — Library of common Zod schemas decorated with OpenAPI example metadata. Covers the universal HTTP query / path / pagin…
- schema-registry — Instance-based registry for reusable Zod schemas. Each schema is bound to a stable name and may be derived into related…
strictness — strictness resolves the host's missing-schema policy for the OpenAPI emitter and applies it consistently across every…
- strictness — strictness resolves the host's missing-schema policy for the OpenAPI emitter and applies it consistently across every…
types — Structural TypeScript types for OpenAPI 3.1 documents, supporting shapes (info / server / security scheme), registered-…
- openapi — Structural TypeScript types for OpenAPI 3.1 documents, supporting shapes (info / server / security scheme), registered-…

Features

OpenAPIRegistry — tracks info, servers, securitySchemes, tags, routes. buildDocument() emits a full 3.1 document. applyTo(app) wires a Hono GET handler that serves buildDocument() output — no drift possible.
RouteBuilder — fluent generic that threads TParams/TQuery/TBody/TResponse through to the final TypedRouteConfig. Hono's app.openapi(route, handler) then infers c.req.valid() to the exact Zod type.
StandardResponses — covers the full SuaveplanError statusCode range (400/401/403/404/409/422/429/500/503/504).
ErrorResponseSchema — 1:1 match for SuaveplanError.toJSON() including the cause field.
SchemaRegistry — instance-based (no singleton), extend/partial/pick/omit derivation helpers that raise typed OPENAPI.SCHEMA_NOT_FOUND / OPENAPI.INVALID_BASE_SCHEMA errors.
CommonSchemas — uuid, email, url, datetime, positiveInt, nonNegativeInt, page, limit, sortOrder.
mergeOpenAPIDocuments / prefixPaths / filterPathsByTag / removeInternalRoutes — pure document transforms.
definePluginRoutes(routes, { app, registry, pluginName }) — atomic dual-surface registration; the only way a plugin should add routes.

Quick start

Build a typed route

import z from "zod";
import { GET, successResponse } from "@suaveplan/api-openapi/route-factory";

const ListUsers = GET("/users")
    .tags("users")
    .operationId("listUsers")
    .response(successResponse(z.array(z.object({ id: z.string() }))))
    .build();

With auth + body validation

import { POST, successResponse } from "@suaveplan/api-openapi/route-factory";

const CreateUser = POST("/users")
    .tags("users")
    .operationId("createUser")
    .security([{ Bearer: [] }])
    .body(z.object({ email: z.string().email() }))
    .response(successResponse(z.object({ id: z.string() })))
    .build();

Paginated response

import { GET, paginatedResponse } from "@suaveplan/api-openapi/route-factory";

const ListUsersPaginated = GET("/users")
    .tags("users")
    .query(
        z.object({
            page: z.coerce.number().int().min(1).default(1),
            limit: z.coerce.number().int().min(1).max(100).default(20),
        })
    )
    .response(paginatedResponse(z.object({ id: z.string() })))
    .build();

Schema registry derivation

import z from "zod";
import { createSchemaRegistry } from "@suaveplan/api-openapi/schema-registry";

const reg = createSchemaRegistry();
reg.register(
    "User",
    z.object({
        id: z.string().uuid(),
        email: z.string().email(),
        password: z.string(),
    })
);

const UserPublic = reg.omit("User", "UserPublic", ["password"]);
const UserPatch = reg.partial("User", "UserPatch");
const UserAudit = reg.extend("User", "UserAudit", {
    lastSeenAt: z.string().datetime(),
});

Merge multiple plugin docs

import {
    mergeOpenAPIDocuments,
    prefixPaths,
    removeInternalRoutes,
} from "@suaveplan/api-openapi/merger";

const final = removeInternalRoutes(
    mergeOpenAPIDocuments(
        baseDoc,
        prefixPaths(usersDoc, "/v1"),
        prefixPaths(projectsDoc, "/v1")
    )
);

Plugin pattern with `definePluginRoutes`

import { OpenAPIHono } from "@hono/zod-openapi";
import { createOpenAPIRegistry } from "@suaveplan/api-openapi/registry";
import { definePluginRoutes } from "@suaveplan/api-openapi/plugin-integration";

const app = new OpenAPIHono();
const registry = createOpenAPIRegistry({
    info: { title: "Public API", version: "1.0.0" },
});

definePluginRoutes(
    [
        {
            route: ListUsers,
            handler: (c) => c.json({ success: true as const, data: [] }, 200),
        },
        {
            route: CreateUser,
            handler: (c) =>
                c.json(
                    { success: true as const, data: { id: "1" } },
                    200
                ),
        },
    ],
    { app, registry, pluginName: "users" }
);

// Single line connects registry → Hono. No drift possible.
registry.applyTo(app);

Tier

Server-tier (Hono-typed). Runs in Bun + Node.

Modules

./error-codes — stable OPENAPI.* registry (7 codes) + OpenAPIError class.
./types — structural OpenAPIDocument, Operation, PathItem, RegisteredRoute, security-scheme types, HTTP_METHODS.
./registry — OpenAPIRegistry, createOpenAPIRegistry, applyTo(app) (Hono GET handler), default BearerAuthScheme / ApiKeyScheme.
./route-factory — fluent RouteBuilder (GET/POST/PUT/ PATCH/DELETE), successResponse / errorResponse / paginatedResponse, StandardResponses (400-504), ErrorResponseSchema matching SuaveplanError.toJSON().
./schema-registry — instance-based SchemaRegistry with extend/partial/pick/omit derivation + CommonSchemas.
./merger — mergeOpenAPIDocuments, prefixPaths, filterPathsByTag, removeInternalRoutes, extractOpenAPIDoc.
./plugin-integration — definePluginRoutes (atomic dual-surface registration; the only way a plugin should add routes).
./namespacing — assignOperationIds, tagFor, componentPrefix, normaliseRoutePath. Deterministic operationId (<plugin>.<method>.<oasPath>) with OPENAPI.OPERATION_ID_COLLISION on duplicates.
./strictness — resolveStrictness, reportMissingSchema, getMissingSchemaCounter. warn vs refuse-install policy + api.openapi.missing_schema_total OTel counter.
./emitter — createOpenapiEmitter({ manifests, routes, authAdapter, hostConfig }). The Stage-8.6 aggregator: namespacing + strictness + security inheritance + memoised JSON/YAML/filtered output. Emits api.openapi.emission_total and api.openapi.conversion_error_total OTel counters.
./endpoints — createOpenapiRouter / mountOpenapiEndpoints. Mounts GET /openapi.json, /openapi.yaml, /docs, /docs/:plugin.

License

MIT

README.md