Building a Live X Feed or Event Wall: The Parts Nobody Warns You About
Building a Live X Feed or Event Wall: The Parts Nobody Warns You About
Three different projects share this search term:
- A live wall — posts about your event, on a screen behind a stage
- Real-time monitoring — alerts when something is said, no display involved
- Going live — broadcasting video on X, which is a write operation and not something we do
This covers the first two. ★Fetching the posts is maybe 20% of the work.★ The rest is what happens when a real audience discovers your wall.
First: how real-time do you actually need?
The answer determines the architecture, and people almost always over-specify it.
| Latency | Approach | When it's right |
|---|---|---|
| Seconds | Streaming connection | Live events, trading, incident response |
| 1-5 minutes | Polling | ★Almost everything else★ |
| 15+ minutes | Scheduled batch | Reporting, analysis |
⚠️ ★An event wall does not need second-level latency.★ A post appearing 90 seconds after it's written is indistinguishable from instant to anyone watching a screen. Building a streaming pipeline for a two-hour conference is engineering you don't need.
Where seconds genuinely matter: alerting on breaking news, monitoring a launch, anything where a human acts on the information immediately. The polling-versus-streaming trade-off in full.
If you do need seconds, that's a persistent connection rather than repeated requests — we publish a stream for exactly this.
★The three problems that actually break event walls★
This is the part missing from every "build a tweet wall" tutorial, and each one has embarrassed somebody in front of an audience.
1. Moderation — the one that ends careers
You put your hashtag on a screen at a conference. Someone in the audience notices and posts something obscene with your hashtag. It appears on the screen behind your CEO.
★This is not hypothetical. It is the default outcome of an unmoderated wall at any event large enough to matter.★
The only safe architecture is a queue:
fetch → hold → human approves → display
⚠️ Automated filtering is not sufficient on its own. Word blocklists miss creative spelling, and image content isn't checked by a text filter at all. A person with an approve button, watching a queue, is the control that works.
The pragmatic middle ground: auto-approve posts from accounts you've pre-approved (speakers, sponsors, staff), queue everything else.
2. Deduplication
Polling returns overlapping results. Without dedup, the same post cycles onto the wall repeatedly and the display looks broken.
★Dedup on post ID, not text★ — reposts and near-identical posts differ slightly, and text matching either misses them or collapses distinct posts wrongly.
3. Display throttling
During a keynote, posts can arrive faster than anyone can read. A wall that renders every post instantly becomes an unreadable blur.
★Throttle to a readable pace — one post every 4-8 seconds★ — and queue the overflow. During quiet periods, recycle recent high-engagement posts rather than showing an empty screen.
A working implementation
import requests, time, json, pathlib
from collections import deque
BASE = "https://api.socialapi.tech"
KEY = "your_api_key"
HDRS = {"X-API-Key": KEY}
APPROVED = pathlib.Path("approved.jsonl") # what the wall renders
TRUSTED = {"yourbrand", "yourceo", "sponsor1"} # auto-approve these
class Wall:
def __init__(self, query, min_faves=0):
self.query = query
self.min_faves = min_faves
self.seen = set()
self.pending = deque()
def poll(self):
r = requests.get(f"{BASE}/v1/search/advanced",
params={"query": self.query, "product": "Latest",
"limit": 50},
headers=HDRS, timeout=60)
r.raise_for_status()
new = 0
for post in r.json()["data"]:
if post["id"] in self.seen:
continue # ★dedup on ID★
self.seen.add(post["id"])
if (post.get("like_count") or 0) < self.min_faves:
continue
if post["author"]["username"].lower() in TRUSTED:
self.approve(post) # pre-approved account
else:
self.pending.append(post) # ★everyone else waits★
new += 1
return new
def approve(self, post):
with APPROVED.open("a", encoding="utf-8") as f:
f.write(json.dumps(post, ensure_ascii=False) + "\n")
wall = Wall('#yourevent2026 -filter:retweets', min_faves=1)
while True:
found = wall.poll()
print(f"{found} new · {len(wall.pending)} awaiting review")
time.sleep(60) # ★60s is fine for a wall★
What each guard is doing:
- ★
TRUSTEDauto-approval★ keeps the wall alive during quiet moments without leaving it open - ★
pendingqueue★ — anything from an unknown account waits for a human - ★
min_faves★ filters out zero-engagement noise before it reaches anyone - ★
-filter:retweets★ stops one popular post filling the screen with copies
⚠️ Note what's deliberately missing: an auto-approve path for unknown accounts. (Author profiles come with every result, so the trusted check is a field lookup rather than a second call.) That's not an oversight — it's the whole safety property.
Real-time monitoring without a display
The other half of this search term. No wall, no queue — you want to know when something is said.
The architecture is simpler because there's no audience to embarrass: poll, dedup, alert above a threshold. ★The failure mode moves from "obscenity on screen" to "so many alerts nobody reads them"★ — covered in designing alerts that stay useful.
Questions people ask
How do I make a live Twitter feed? Poll a search on a schedule, deduplicate on post ID, and render. Add a moderation queue before anything reaches a screen.
How do I build a tweet wall for an event? Same mechanics plus three guards: human moderation, deduplication, and display throttling.
How do I display tweets on a screen? Fetch, store approved posts, and render from your own store rather than calling an API on every refresh.
Do I need a moderation queue? ★For anything public-facing, yes.★ An unmoderated hashtag wall at a real event will eventually display something you don't want behind a stage.
Can I automate moderation? Partly. Blocklists miss creative spelling and don't check images. A human with an approve button is the control that works.
How real-time does a tweet wall need to be? A minute is fine. Nobody watching a screen can tell 5 seconds from 60.
What's the difference between polling and streaming? Polling asks repeatedly; streaming holds a connection and receives pushes. Full comparison.
How often should I poll for a live feed? Every 30-60 seconds for a wall. More often costs more and changes nothing visible.
Why does the same tweet keep appearing? Missing deduplication. Dedup on post ID — text matching doesn't work reliably.
How do I stop one person flooding the wall? Cap posts per author per time window, and exclude reposts.
How do I handle quiet periods? Recycle recent high-engagement approved posts rather than showing an empty screen.
How fast should posts rotate on screen? One every 4-8 seconds. Faster is unreadable.
Can I filter by engagement?
Yes — a min_faves threshold removes zero-engagement noise before it reaches the queue.
How do I embed a live feed on a website? The official embed widget for a simple timeline; build it yourself only if you need filtering or multiple accounts — the comparison.
Can I show multiple hashtags?
Yes — combine with OR in one query, or run several and merge before dedup.
How do I track a hashtag live? Poll the hashtag as a search query. For measuring rather than displaying, see hashtag analytics.
What's the best tweet wall software? Several hosted products exist. Build only if you need custom filtering or branding a product won't do.
Can I use this for a TV broadcast? The same mechanics apply, with stricter moderation — broadcast has less tolerance for mistakes than a conference screen.
How do I show only tweets with images?
Add filter:images to your query — the operator set.
Do I need to cache? Yes. Render from your own store; don't call an API on every screen refresh.
What happens if the API is slow? Keep rendering from your store. The wall shouldn't depend on a live request to display something.
How do I go live on Twitter? That's video broadcasting from the app — a write operation, unrelated to displaying posts. ★No read-only API can do it.★
Can I stream tweets in real time? With a persistent connection, yes. For a wall you don't need it; for alerting on breaking news you might.
What latency can I expect from a stream? A few seconds from post to delivery. Polling adds your interval on top.
How many posts can a wall handle? Display rate is the constraint, not fetching. At one post per 5 seconds you show 720 an hour regardless of how many arrive.
Can I moderate from a phone? Build the queue as a simple web page and it works anywhere. Most teams do exactly this.
Should I show reply posts?
Usually not on a wall — replies lack context on their own. -filter:replies removes them.
How do I avoid showing deleted posts? Re-check before display if there's a gap between approval and rendering. A post can be deleted after you fetch it.
Can I show follower counts on the wall? Author profiles come with each post, so yes — though it rarely adds anything for an audience.
What if someone posts something offensive after approval? They can edit or delete, but your stored copy renders regardless. Keep a kill switch that removes a post from rotation instantly.
How do I test the wall before an event? Run it against a busy public hashtag for an hour. That surfaces the throttling and dedup problems before they matter.
Does a live feed need a developer account? Not for reading public data. It would only be needed for write operations like broadcasting — what a developer account involves.
How much does running a wall cost? Polls per hour times hours. A 60-second interval is 60 calls an hour — what call volume costs.
Can I run it offline as a backup? Pre-approve a set of posts and rotate them if the connection drops. ★For a live event, always have this.★
If you're building one
The fetching is a search call on a timer. ★The parts that decide whether it works are moderation, deduplication, and throttling★ — and the first of those is the difference between a good demo and an incident.
Our API covers the fetching — search with full operator syntax, engagement counts for thresholding, and author profiles on every result so trusted-account auto-approval is a field check rather than a second call. For genuine second-level latency there's a stream instead of polling.
What it can't do: broadcast video, or moderate for you. The first is a write operation; the second is a decision only a person should make.
Related reading: polling versus streaming · designing alerts that stay readable · measuring a hashtag campaign · embedding a feed on a site.