TranscriptAPI — YouTube transcripts (transcriptapi.io)
REMOTE · API.TRANSCRIPTAPI.IO · 2 COMPONENTS
YouTube transcripts, search, channels and playlists for AI agents, by transcriptapi.io.
Available components
Last scanned (15 hours ago)
Scores higher than 60% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Search and Retrieval
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability79
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 534 tokens (~106/item across 5 items; 5 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management3
- Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 18 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 17 Oct 26 70
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 18 Oct 2026 · Probed https://api.transcriptapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=api.transcriptapi.io | CN=YE2,O=Let's Encrypt,C=US | 8 Sept 2026 | 7 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 695e960459017af6e632efa19f6160d071f |
| SANs: api.transcriptapi.io | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of api.transcriptapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| transcriptapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.transcriptapi.io/mcp | Verified | 200 | |
| http (plaintext) | http://api.transcriptapi.io/mcp | HTTPS enforced | 308 | https://api.transcriptapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_channel_videos List a channel's videos ~69
List the most recent uploads of a YouTube channel, newest first. Accepts a channel id (UC…), a handle (@name) or a channel URL. Returns ids, titles, durations, view counts and publish dates.
| Name | Type | Req | Description |
|---|---|---|---|
| channel | string | yes | – |
| limit | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_playlist_videos List a playlist's videos ~64
List the videos in a YouTube playlist, in playlist order. Accepts a playlist URL (anything with list=…) or the playlist id. Returns ids and titles for get_youtube_transcript.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| playlist | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_youtube_transcript Get YouTube transcript ~153
Fetch the transcript (captions/subtitles) of a YouTube video as text. Accepts a watch URL, youtu.be link, Shorts link or bare 11-character video id. Returns the spoken text with timestamps grouped in ~30 s blocks by default; format 'text' is prose without timestamps, 'srt'/'vtt' are subtitle files, 'json' is raw segments with start/duration. Works with creator-uploaded and auto-generated captions. translate_to translates the transcript with AI (extra credits, scales with length) — omit unless asked.
| Name | Type | Req | Description |
|---|---|---|---|
| format | string | – | – |
| language | string | – | – |
| translate_to | – | – | – |
| video | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
search_channel_videos Search within a channel ~67
Search for videos inside one YouTube channel by keyword — 'find the video where <channel> talks about <topic>'. Accepts a channel id, @handle or channel URL.
| Name | Type | Req | Description |
|---|---|---|---|
| channel | string | yes | – |
| limit | integer | – | – |
| query | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
search_youtube Search YouTube ~59
Search YouTube for videos by keyword. Returns video ids, titles, channel names, durations and view counts. Use a returned id with get_youtube_transcript to read it.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| query | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
How do I install the TranscriptAPI — YouTube transcripts (transcriptapi.io) MCP server?
TranscriptAPI — YouTube transcripts (transcriptapi.io) is a hosted endpoint at https://api.transcriptapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · api.transcriptapi.io
claude mcp add --transport http io-transcriptapi-youtube-transcript 'https://api.transcriptapi.io/mcp'
What is the TranscriptAPI — YouTube transcripts (transcriptapi.io) MCP server?
TranscriptAPI — YouTube transcripts (transcriptapi.io) is an MCP server listed in the public MCP registry as io.transcriptapi/youtube-transcript. YouTube transcripts, search, channels and playlists for AI agents, by transcriptapi.io. This page covers its hosted endpoint (https://api.transcriptapi.io/mcp).
Is the TranscriptAPI — YouTube transcripts (transcriptapi.io) MCP server safe to use?
TranscriptAPI — YouTube transcripts (transcriptapi.io) scores 70 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the TranscriptAPI — YouTube transcripts (transcriptapi.io) MCP server expose?
TranscriptAPI — YouTube transcripts (transcriptapi.io) exposes 5 tools: get_youtube_transcript, search_youtube, get_channel_videos, search_channel_videos, get_playlist_videos. Their descriptions and schemas cost roughly 412 tokens of context every time the server is loaded.
Does the TranscriptAPI — YouTube transcripts (transcriptapi.io) MCP server require authentication?
No. We connected to TranscriptAPI — YouTube transcripts (transcriptapi.io) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the TranscriptAPI — YouTube transcripts (transcriptapi.io) MCP server still maintained?
TranscriptAPI — YouTube transcripts (transcriptapi.io) is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.