Roundhouse

FastAF

YouTube transcript and video search API for AI agents: retrieve timestamped transcript segments by video ID or find videos by keyword. Returns JSON transcripts with text, start and duration, or video search results for content research and summarization. Provided by FastAF YouTube Transcript & Metadata. Price: $0.001000 USDC per successful call.

SearchUnknowneip155:8453Exactvia cdp
https://api.fastaf.co/x402/v1/youtube
DataScrapingWeb-dataApiAgents
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far.
$0.38
Verified settled volume
65 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-26 03:46Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x05B75e13f071A09A26B50a18Ce5BD02a0755d76F

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.001USDC≈ $0.001 USD
on Base · exact scheme

Pay 0.001 USDC on Base to 0x05B7…5d76F. The signed payment is good for 5 minutes.

Paid to
0x05B7…5d76F
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
1000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x05B75e13f071A09A26B50a18Ce5BD02a0755d76F",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "v": "jNQXAC9IVRw",
          "language": "en",
          "resource": "transcript"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "transcripts": [
            {
              "text": "All right, so here we are in front of the elephants.",
              "start": 0,
              "duration": 4.5
            },
            {
              "text": "The cool thing about these guys is that they have really long trunks.",
              "start": 4.5,
              "duration": 5.5
            }
          ]
        }
      },
      "docsUrl": "https://fastaf.co/apis/youtube-api/",
      "website": "https://fastaf.co",
      "homepage": "https://fastaf.co",
      "openApiUrl": "https://api.fastaf.co/openapi.json"
    },
    "schema": {
      "type": "object",
      "title": "FastAF YouTube Transcript & Metadata",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "anyOf": [
                {
                  "required": [
                    "v"
                  ]
                },
                {
                  "required": [
                    "resource",
                    "search_query"
                  ],
                  "properties": {
                    "resource": {
                      "const": "search"
                    }
                  }
                }
              ],
              "examples": [
                {
                  "v": "jNQXAC9IVRw",
                  "language": "en",
                  "resource": "transcript"
                }
              ],
              "properties": {
                "v": {
                  "type": "string",
                  "examples": [
                    "jNQXAC9IVRw"
                  ],
                  "maxLength": 8192,
                  "description": "Required YouTube video ID for transcript, e.g. jNQXAC9IVRw, not the watch URL. Not valid for search; no default. No option surcharge; transcript costs 1 credit, search 5 credits per request."
                },
                "sp": {
                  "type": "string",
                  "maxLength": 8192,
                  "description": "YouTube search filter or continuation token copied from a search URL/previous response; search only. Omit for the first unfiltered page. Each page is a separate request. No option surcharge; transcript costs 1 credit, search 5 credits per request."
                },
                "country": {
                  "type": "string",
                  "maxLength": 8192,
                  "description": "Two-letter YouTube country code, e.g. us or gb; upstream default us for search/transcripts. No option surcharge; transcript costs 1 credit, search 5 credits per request."
                },
                "language": {
                  "type": "string",
                  "examples": [
                    "en"
                  ],
                  "maxLength": 8192,
                  "description": "YouTube language code, e.g. en, es or de; upstream default en. For transcripts, requests the available caption language; no translation is guaranteed. No option surcharge; transcript costs 1 credit, search 5 credits per request."
                },
                "resource": {
                  "enum": [
                    "transcript",
                    "search"
                  ],
                  "type": "string",
                  "default": "transcript",
                  "examples": [
                    "transcript"
                  ],
                  "description": "YouTube operation: transcript (default) or search. No option surcharge; transcript costs 1 credit, search 5 credits per request."
                },
                "search_query": {
                  "type": "string",
                  "maxLength": 8192,
                  "description": "Required YouTube search text for resource=search, e.g. espresso tutorial. Not valid for transcript; no default. No option surcharge; transcript costs 1 credit, search 5 credits per request."
                }
              },
              "description": "YouTube transcript lookup using resource=transcript and video ID v. Video search instead requires resource=search and search_query.",
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "transcripts": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "text": {
                        "type": "string"
                      },
                      "start": {
                        "type": "number"
                      },
                      "duration": {
                        "type": "number"
                      }
                    },
                    "additionalProperties": true
                  }
                }
              },
              "description": "YouTube transcript JSON: transcripts contains text segments with start and duration in seconds. resource=search returns video_results instead.",
              "additionalProperties": true
            }
          }
        },
        "docsUrl": {
          "type": "string",
          "format": "uri"
        },
        "website": {
          "type": "string",
          "format": "uri"
        },
        "homepage": {
          "type": "string",
          "format": "uri"
        },
        "openApiUrl": {
          "type": "string",
          "format": "uri"
        }
      },
      "description": "YouTube transcript and video search API for AI agents: retrieve timestamped transcript segments by video ID or find videos by keyword. Returns JSON transcripts with text, start and duration, or video search results for content research and summarization."
    },
    "metadata": {
      "provider": {
        "name": "FastAF",
        "docsUrl": "https://fastaf.co/apis/youtube-api/",
        "website": "https://fastaf.co",
        "homepage": "https://fastaf.co",
        "openApiUrl": "https://api.fastaf.co/openapi.json",
        "description": "FastAF: Web data for AI agents, pay per call in USDC via x402, no account: Google search, Maps, News, Shopping, Scholar, Jobs, AI Mode, Amazon, eBay, Walmart, Zillow, YouTube transcripts, public LinkedIn/X profiles, scraping and screenshots."
      }
    },
    "routeTemplate": "/x402/v1/youtube"
  }
}

Provenance

Seen in the source catalog
2026-10-26 03:46Z
Last indexed by Roundhouse
2026-10-26 17:20Z
Last enriched (probe, favicon, geo)
—
x402 version
2
Max timeout
300s
Liveness probe
Not probed
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service FastAF and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=FastAF'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.fastaf.co/x402/v1/youtube, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.