trigger-realtime-and-frontend

A guide to connecting Trigger.dev tasks with a web interface, including live run updates and streamed text or other metadata. Trigger.dev is a service for running background tasks outside the main web request.

In plain words
What is it for?
Use it to build React interfaces that subscribe to runs, display streams, trigger tasks, and use scoped browser credentials.
Why use it?
It helps avoid mistakes when showing task progress, starting tasks from a browser, or creating limited frontend access credentials.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/triggerdotdev/trigger.dev/trigger-realtime-and-frontend
Any agent
npx skills add triggerdotdev/trigger.dev --skill trigger-realtime-and-frontend
Clone the repo
git clone --depth 1 https://github.com/triggerdotdev/trigger.dev

Made for: Claude Code, Codex.

Per session 148 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 912 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00148 $0.00912
Opus 5 $0.00074 $0.00456
Sonnet 5 $0.00030 $0.00182
Haiku 4.5 $0.00015 $0.00091

Measured 2d ago against content hash 86ff10408cbc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

trigger-realtime-and-frontend scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

packages/cli-v3/skills/trigger-realtime-and-frontend/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Realtime and Frontend

The full, version-pinned reference ships inside your installed @trigger.dev/sdk. Read it before writing code — it always matches the SDK version in this project, so it never drifts:

  • Skill: node_modules/@trigger.dev/sdk/skills/trigger-realtime-and-frontend/SKILL.md — run subscriptions, @trigger.dev/react-hooks, streams, frontend triggering, and scoped tokens.
  • Docs: the full, version-pinned docs ship bundled at node_modules/@trigger.dev/sdk/docs/realtime/; the skill above lists the exact pages it draws from in its sources: frontmatter. Grep for a hook, e.g. grep -rl "useRealtimeRun" node_modules/@trigger.dev/sdk/docs/.

If those paths don't exist, @trigger.dev/sdk isn't installed yet — install it first. In a non-hoisted layout, resolve the package with node -p "require.resolve('@trigger.dev/sdk/package.json')" and read skills/ + docs/ beside it.

Common mistakes

  1. CRITICAL: Triggering from the browser with a Public Access Token. The read token from createPublicToken cannot trigger tasks.

    • Wrong: useTaskTrigger("my-task", { accessToken: publicAccessTokenFromCreatePublicToken })
    • Correct: mint a single-use Trigger Token with auth.createTriggerPublicToken("my-task") and pass that.
  2. Token with no scopes. A scopeless token authorizes nothing, so every subscribe 403s.

    • Wrong: await auth.createPublicToken()
    • Correct: await auth.createPublicToken({ scopes: { read: { runs: ["run_1234"] } } })
  3. Polling with useRun/SWR for live updates. useRun is the SWR-based management-API hook (not recommended for live state); set refreshInterval: 0 to stop polling if you do use it.

    • Wrong: useRun(runId, { refreshInterval: 1000 }) to track progress
    • Correct: useRealtimeRun(runId, { accessToken }) (no polling, no WebSocket setup)
  4. Forgetting "use client". Realtime/trigger hooks cannot run in a server component.

    • Wrong: a Next.js App Router server component using useRealtimeRun
    • Correct: put "use client"; at the top of any component using these hooks.

Read the full file on GitHub · 59 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 59 lines · 148 tokens per session scan A 86ff10408cbc

Subscribe to this mod's changes

trigger-realtime-and-frontend is a skill published in the GitHub repository triggerdotdev/trigger.dev (16,165 stars, last pushed 2d ago), licensed Apache-2.0. It adds 148 tokens to every session and 912 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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