Convex Runtime

Runtime Operations

• HTTP actions: define handlers with httpAction, register in convex/http.ts via httpRouter (default export REQUIRED).
• HTTP Syntax:

  http.route({
    path: "/api/echo", // Exact path
    method: "POST",
    handler: httpAction(async (ctx, req) => {
      const body = await req.bytes();
      return new Response(body, { status: 200 });
    }),
  });
  

• HTTP actions MUST be exposed at https://<deployment>.convex.site.
• Upload URL flow: generate URL mutation → client POST → store storageId; URLs expire after 1 hour.
• HTTP upload flow: ctx.storage.store(blob) then mutation. Uploads via HTTP actions are limited to 20MB.
• Serving files: ctx.storage.getUrl(storageId) in queries/mutations; returns signed URL or null.
• File metadata: ctx.db.system.get("_storage", id) or query("_storage"); storage.getMetadata() is deprecated.
• Scheduling: ctx.scheduler.runAfter/runAt; cron jobs in convex/crons.ts using cronJobs().
• Cron Scheduling: You MUST use crons.interval or crons.cron. You MUST NOT use deprecated helpers like crons.hourly, crons.daily, or crons.weekly.
• Cron internal calls: If a cron calls an internal function, You MUST import the internal object from _generated/api to reference it, even if defined in the same file.

Core Rules

• HTTP actions MUST be routed only via convex/http.ts default export.
• HTTP actions MUST parse Request manually as they do not support validators.
• Search Example:

  const messages = await ctx.db.query("messages")
    .withSearchIndex("search_body", (q) =>
      q.search("body", "hello hi").eq("channel", "#general")
    ).take(10);
  

• Vector search MUST be actions-only; results are non-reactive.
• Search behavior: full text search is relevance-ordered and uses prefix matching on the final term; fuzzy matches are deprecated.
• You SHOULD prefer search/vector filters in index definitions and query filters.
• Scheduled functions MUST remain backward compatible with args.