SociaVault is a broad social scraping API — 25-plus platforms, one credit per call, credit packs you buy once and draw down for as long as you like. Its YouTube transcript endpoint is clean and well documented. VidProxy is the opposite shape: one platform, done thoroughly, with channels monitored on your behalf and transcripts pushed to your webhook when something new appears. Which one you want depends on whether you go and ask for transcripts or wait to be handed them.
A REST API covering Instagram, TikTok, Twitter/X, YouTube and more, sold as one-time credit packs. You call an endpoint, it returns JSON, one credit is spent. The YouTube transcript endpoint is documented and specific.
One service that watches YouTube channels, tracks what it has already sent you, and delivers each new video's transcript to your webhook. On-demand single-video lookup included.
SociaVault is built to answer a question you already know how to ask. Hand it a YouTube URL and it hands back the transcript, timed segments and all, for one credit. Its documented response is well thought through — you get the segments with start and end milliseconds, the whole transcript again as plain text so you don't have to join it yourself, the detected language, and the caption tracks with auto-generated ones marked. If a hosted transcript fetch is what you need, that endpoint does the job.
What it doesn't do is notice things. Nothing in SociaVault's site or API reference describes a webhook, an alert, or a scheduled delivery, so the sentence "tell me when this channel posts" has no home there. You'd write a job that calls a channel endpoint on a timer, holds the last video ID you saw, works out the difference, and fetches transcripts for whatever is genuinely new. That's a database, a scheduler and a fair amount of care about what happens when two runs overlap.
VidProxy is that machinery, running already. A subscription remembers its last seen video. Deliveries are claimed in the database before the request goes out, so a race can't send the same video twice. Videos whose captions YouTube hasn't finished generating are held rather than written off, and retried every cycle for up to a day. You get one POST per new video with the transcript in it.
Coverage, first. It advertises 25-plus platforms — Instagram, TikTok, Twitter/X, Facebook, Reddit, Pinterest, LinkedIn, Threads, Twitch and more. VidProxy has one. For a dashboard pulling creator metrics across networks, or a dataset spanning several, there's no contest.
Second, throughput. SociaVault's site claims no rate limits and no concurrency caps. VidProxy meters requests per minute by plan — 60 on Free and Starter, 300 on Pro and Agency — which is fine for monitoring and wrong for hammering ten thousand video IDs through in an afternoon. If your job is a big parallel backfill, that ceiling is a real constraint here and reportedly not one there.
Third, the commercial shape. SociaVault's packs are one-time purchases and its site says credits never expire and stack across purchases. A project that runs hard for a month and then goes quiet costs nothing while it's quiet. A subscription can't offer that, and pretending otherwise would be dishonest.
Everything downstream of "a new video exists." Detection, delivery, retry, deduplication, and enrichment are the product rather than something you assemble on top of a fetch call.
Transcripts go out through a residential IP, which matters more than it reads: YouTube treats data-centre ranges differently, and when it declines you the response is usually empty rather than an error, so the bug presents as "this video has no captions" and stays hidden until someone tests the same URL from a laptop. On Pro and Agency, a summary, key takeaways and topic tags are computed server-side and travel with the payload, so a downstream model isn't compressing a two-hour transcript every time it looks at one. Keyword alerts fire only when a transcript actually contains the term you're watching for. And the hosted MCP server puts eight tools in front of Claude or Cursor — fetch, search, list, check usage, add a channel, pause one, and a destructive removal that stays disabled until you explicitly turn it on for a key.
| Capability | SociaVault | VidProxy |
|---|---|---|
| Transcript Retrieval | ||
| YouTube transcript by URL | ✓ 1 credit | ✓ 1 on-demand credit |
| Transcript by bare video ID | ✓ Via video URL | ✓ ?video_id= |
| Timed segments plus full plain text | ✓ | ✓ |
| Caption track metadata (auto-generated flag) | ✓ | ✕ |
| AI summary, takeaways, topic tags | ✕ | ✓ Pro / Agency |
| Monitoring & Delivery | ||
| Watch a channel for new uploads | ✕ You poll it | ✓ Core feature |
| Webhook push on a new video | ✕ Not documented | ✓ |
| Server tracks what you've already received | ✕ | ✓ Per subscription |
| Waits for captions that aren't ready yet | ✕ | ✓ Held up to 24h |
| Keyword alerts on transcript text | ✕ | ✓ Pro / Agency |
| MCP server for Claude / Cursor | ✕ Not documented | ✓ 8 tools |
| Reach & Throughput | ||
| Platforms covered | ✓ 25+ | YouTube only |
| Request rate ceiling | ✓ Advertises none | 60/min free & starter, 300/min pro & agency |
| Pricing & Model | ||
| Free tier without a card | ✓ 50 credits | ✓ 1 channel, 10 lookups/mo |
| Pricing model | One-time credit packs, never expire | Flat monthly subscription |
| Entry paid tier | $29 — 6,000 credits | $9/mo — 15 channels, 500 lookups |
| Cost while your project is idle | ✓ Nothing | The monthly fee |
A per-call transcript API is one of four pieces. These are the other three, plus the thing that quietly breaks them all.
A channel endpoint returns recent uploads, not new ones. Something has to hold the last video ID and diff every result against it. VidProxy keeps that on the subscription, so the webhook only ever fires for something you haven't seen.
YouTube frequently publishes a video minutes before auto-captions finish generating. Fetch too early and you get nothing back, with no error to tell you why. Deliveries are held and retried here for up to 24 hours.
Transcript requests from cloud IP ranges are treated differently to requests from a home connection, and it's the reason self-hosted transcript libraries fail in production but not on your machine. VidProxy routes through a residential IP by default.
A long transcript is a lot of tokens to reduce on every read. On Pro and Agency the summary, key takeaways and topic tags are generated once, server-side, and ride along with the payload.
SociaVault doesn't sell a subscription at all. Its site lists one-time packs: 50 free credits to start with no card, then Starter at $29 for 6,000 credits, Growth at $79 for 20,000, Pro at $199 for 75,000, and Enterprise at $399 for 200,000. Most endpoints cost one credit, packs stack, and the site is emphatic that credits never expire.
That's a good model for lumpy work. Buy a pack, spend it over eight months, spend nothing in the months you don't touch it.
VidProxy charges monthly: Free $0, Starter $9, Pro $29, Agency $79. Each plan sets a channel limit — 1, 15, 100, 1,000 — and a monthly on-demand transcript quota — 10, 500, 2,500, 10,000. The thing that changes the arithmetic is that monitoring isn't billed per video. Watch a hundred channels on the $29 plan and it costs $29 whether they publish four videos between them this month or four hundred. Under a per-credit model, that same month bills for every one.
Both let you start without a card. SociaVault's 50 credits are enough to try endpoints across several platforms and see whether the response shapes suit you. VidProxy's free plan is one monitored channel, one webhook, 10-minute polling and 10 on-demand lookups a month — narrower, but it runs a real monitoring loop end to end, so you find out whether push delivery is worth anything to you before paying.
Every SociaVault figure and capability above was read from sociavault.com and its published API reference on 12 August 2026. Claims about uptime, latency and rate limits are theirs, quoted from their site rather than measured by us — check the current pages before committing.
Strip both products back and the only place they collide is single-video transcript fetching. Everything else points in opposite directions — SociaVault outward across platforms, VidProxy downward into one. Plenty of stacks would reasonably carry both: SociaVault for the wide occasional pulls, VidProxy for the YouTube feed that has to stay live.
If you're comparing more options, VidProxy vs Supadata covers the closest single-purpose transcript API, vs CreatorCrawl covers another multi-platform agent-focused rival, and vs the YouTube Data API covers Google's own quota maths.
GET /v1/scrape/youtube/video/transcript, which takes a YouTube video or Short URL and costs 1 credit. The documented response includes the transcript as timed segments with start and end milliseconds, the whole thing again as a single plain-text string, the detected language, and the available caption tracks with auto-generated ones flagged. It's a clean transcript endpoint and there's nothing wrong with it.
Subscribe to a channel and get it pushed to your webhook. Free tier, no credit card.
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