●

Melchior Video Context

Data PAYMENT-READY

payment-ready until 2026-08-20

Pay-per-request YouTube transcripts, cited evidence search, and context chunks for autonomous agents. Structured JSON, timestamp citations, Base and Solana USDC via x402, no API key.

Pay from $0.003 to $0.01 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-07-23 · $0.03 all-time · settled via payAI

BASE URL https://transcript.melchiorlabs.com │ WEBSITE https://transcript.melchiorlabs.com │ ENDPOINTS 3 │ NETWORK Base / Solana │ ASSET USDC │ MEMBER SINCE 2026-07-21 │ MONITORED SINCE 2026-07-21

ASSESSMENT

updated 3h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%

uptime 24h: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 524ms
avg response: 657ms
total checks: 2,066

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.003 to $0.01 (p28 in Data)

price (min): $0.003
price (max): $0.01
category percentile (min): p28 in Data
category percentile (max): p24 in Data
endpoints / prices: 3 / 3
model: tiered
stability: 100%

risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: 24d
registrar: Cloudflare, Inc.
hosting: custom
domain created: 2026-07-18

Identity facts, not a risk score.

traction $0.025 30d · 3 buyers

volume 30d: $0.025
buyers 30d: 3
settlements 30d: 4
first settlement: 2026-07-23
last settlement: 2026-07-26
top buyer share: 47% of 30d volume
trend 7d vs 30d: 0.00x the 30d daily rate
networks: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time: $0.03
settlements all-time: 5
median settlement 30d: $0.02
max settlement 30d: $0.03
settled via: payAI ($0.07, 4 tx)

Attributed pro-quota: this payout address is shared, so volume is the operator-level figure divided by the services sharing it, while buyer and transaction counts stay whole. A declared convention, not an individually observed measure, and still a conservative undercount.

Currently sharing this payout address with Package Evidence, Recompete Radar.

Top buyer share is a concentration signal, not part of the ranking score.

CHANGES

1 event, detecting since 2026-07-24

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes schema changed 8d ago (1 since 2026-07-24)

schema changed · 8d ago

endpoint added POST /v1/transcripts/context

endpoint added POST /v1/youtube/transcript

schema added POST /v1/transcripts/context exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 120 {"name":"USD Coin","version":"2"}

schema added POST /v1/transcripts/context exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 120 {"feePayer":"2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"}

schema added POST /v1/youtube/transcript exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 180 {"name":"USD Coin","version":"2"}

schema added POST /v1/youtube/transcript exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 180 {"feePayer":"2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"}

see all changes for this service

WHAT IT DOES

ai-derived

Provides YouTube transcript extraction, context generation, and evidence search services.

category: video-context
in: body

transcriptsyoutubecontextevidence-search

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	PRICE	NETWORK	ASSET	402 CHANNEL
POST	/v1/transcripts/context	$0.003	Base/Solana	USDC	header
GET	/v1/youtube/search	$0.005	Base/Solana	USDC	header
POST	/v1/youtube/transcript	$0.01	Base/Solana	USDC	header

3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/youtube/search returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i 'https://transcript.melchiorlabs.com/v1/youtube/search'

// 402 response (captured by monitor) · 3 payloads · click to expand

[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x174fA5CC0E9C170FC8f361a15fcce3d9271Df880",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 180
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "9DqUuG8FVAPKWMNSLHQUfod1FhWZ47igMNz6muKrZDfu",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 180
      }
    ],
    "resource": {
      "url": "https://transcript.melchiorlabs.com/v1/youtube/transcript",
      "tags": [
        "youtube",
        "transcript",
        "agents",
        "captions",
        "context"
      ],
      "iconUrl": "https://transcript.melchiorlabs.com/icon.svg",
      "mimeType": "application/json",
      "description": "Turn a public YouTube video into clean transcript chunks with timestamp citations for AI agents.",
      "serviceName": "Melchior Video Context"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
              "language": "en",
              "includeText": true,
              "preferManual": true,
              "includeSegments": true,
              "maxChunkCharacters": 2400
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "usage": {
                "cache": "miss",
                "characters": 4200,
                "chunkCount": 2,
                "estimatedTokens": 1050
              },
              "video": {
                "id": "dQw4w9WgXcQ",
                "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
                "title": "Video title",
                "durationSeconds": 213
              },
              "chunks": [
                {
                  "text": "Agent-ready context...",
                  "index": 0,
                  "citation": {
                    "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=0s",
                    "label": "0:00–0:35"
                  },
                  "endSeconds": 35,
                  "startSeconds": 0
                }
              ],
              "requestId": "0b0ef10e-ff50-4a45-9c4e-b7344aa93f63",
              "transcript": {
                "text": "Transcript text...",
                "source": "manual",
                "language": "en",
                "segmentCount": 42
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "required": [
                    "url"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "pattern": "^https://(?:www\\.|m\\.)?(?:youtube\\.com|youtu\\.be)/",
                      "description": "Public youtube.com or youtu.be video URL"
                    },
                    "language": {
                      "type": "string",
                      "default": "en",
                      "description": "Caption language code, such as en or es"
                    },
                    "includeText": {
                      "type": "boolean",
                      "default": true
                    },
                    "preferManual": {
                      "type": "boolean",
                      "default": true
                    },
                    "includeSegments": {
                      "type": "boolean",
                      "default": true
                    },
                    "maxChunkCharacters": {
                      "type": "integer",
                      "default": 2400,
                      "maximum": 8000,
                      "minimum": 400
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x174fA5CC0E9C170FC8f361a15fcce3d9271Df880",
        "amount": "3000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "9DqUuG8FVAPKWMNSLHQUfod1FhWZ47igMNz6muKrZDfu",
        "amount": "3000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://transcript.melchiorlabs.com/v1/transcripts/context",
      "tags": [
        "transcript",
        "agents",
        "chunking",
        "citations",
        "context"
      ],
      "iconUrl": "https://transcript.melchiorlabs.com/icon.svg",
      "mimeType": "application/json",
      "description": "Normalize text, WebVTT, SRT, or timestamped segments into compact, citeable chunks for AI agents.",
      "serviceName": "Melchior Video Context"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "text": "WEBVTT\n\n00:00:00.000 --> 00:00:03.000\nHello, agents.",
              "format": "vtt",
              "maxChunkCharacters": 2400
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "usage": {
                "characters": 14,
                "chunkCount": 1,
                "estimatedTokens": 4
              },
              "chunks": [
                {
                  "text": "Hello, agents.",
                  "index": 0,
                  "citation": {
                    "label": "0:00–0:03"
                  },
                  "endSeconds": 3,
                  "startSeconds": 0
                }
              ],
              "requestId": "89416332-bc4e-43da-b0e2-32af08677d9e",
              "transcript": {
                "text": "Hello, agents.",
                "segmentCount": 1
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "properties": {
                    "text": {
                      "type": "string",
                      "maxLength": 1000000,
                      "description": "Plain text, WebVTT, or SRT transcript"
                    },
                    "format": {
                      "enum": [
                        "text",
                        "vtt",
                        "srt"
                      ],
                      "type": "string",
                      "default": "text"
                    },
                    "segments": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "required": [
                          "startSeconds",
                          "endSeconds",
                          "text"
                        ],
                        "properties": {
                          "text": {
                            "type": "string",
                            "description": "Transcript text spoken during this segment."
                          },
                          "endSeconds": {
                            "type": "number",
                            "description": "Segment end time in seconds from the beginning of the source."
                          },
                          "startSeconds": {
                            "type": "number",
                            "description": "Segment start time in seconds from the beginning of the source."
                          }
                        }
                      },
                      "maxItems": 20000
                    },
                    "sourceUrl": {
                      "type": "string",
                      "pattern": "^https?://"
                    },
                    "includeText": {
                      "type": "boolean",
                      "default": true
                    },
                    "includeSegments": {
                      "type": "boolean",
                      "default": true
                    },
                    "maxChunkCharacters": {
                      "type": "integer",
                      "default": 2400,
                      "maximum": 8000,
                      "minimum": 400
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x174fA5CC0E9C170FC8f361a15fcce3d9271Df880",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 180
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "9DqUuG8FVAPKWMNSLHQUfod1FhWZ47igMNz6muKrZDfu",
        "amount": "5000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 180
      }
    ],
    "resource": {
      "url": "https://transcript.melchiorlabs.com/v1/youtube/search",
      "tags": [
        "youtube",
        "transcript",
        "search",
        "passages",
        "citations",
        "evidence"
      ],
      "iconUrl": "https://transcript.melchiorlabs.com/icon.svg",
      "mimeType": "application/json",
      "description": "Find transcript passages matching a phrase or terms in a public YouTube video, with timestamp citations.",
      "serviceName": "Melchior Video Context"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
              "query": "never gonna give you up",
              "language": "en",
              "maxResults": 5,
              "preferManual": true,
              "contextSegments": 1
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "query": "never gonna give you up",
              "usage": {
                "cache": "hit",
                "matchedSegments": 2,
                "returnedMatches": 1,
                "candidateSegments": 60
              },
              "video": {
                "id": "dQw4w9WgXcQ",
                "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
                "title": "Video title"
              },
              "matches": [
                {
                  "rank": 1,
                  "text": "Never gonna give you up...",
                  "score": 17,
                  "citation": {
                    "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ&t=42s",
                    "label": "0:42–0:49"
                  },
                  "endSeconds": 49,
                  "matchedTerms": [
                    "give",
                    "never"
                  ],
                  "startSeconds": 42
                }
              ],
              "requestId": "0b0ef10e-ff50-4a45-9c4e-b7344aa93f63"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "required": [
                    "url",
                    "query"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "pattern": "^https://(?:www\\.|m\\.)?(?:youtube\\.com|youtu\\.be)/",
                      "description": "Public youtube.com or youtu.be video URL"
                    },
                    "query": {
                      "type": "string",
                      "maxLength": 500,
                      "minLength": 1,
                      "description": "Phrase or terms to match lexically in the transcript"
                    },
                    "language": {
                      "type": "string",
                      "default": "en",
                      "description": "Caption language code, such as en or es"
                    },
                    "maxResults": {
                      "type": "integer",
                      "default": 5,
                      "maximum": 10,
                      "minimum": 1
                    },
                    "preferManual": {
                      "type": "boolean",
                      "default": true
                    },
                    "contextSegments": {
                      "type": "integer",
                      "default": 1,
                      "maximum": 5,
                      "minimum": 0
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/melchior-video-context/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME

30d UPTIME 100%

RESPONSE TIME

AVG RESP 655ms

PRICE (captured 402, USD)

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

price percentile in Data

site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)

Shared payout address (2 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 3 services sharing it: a declared convention, not an individually observed measure.

DISTINCT BUYERS

Shared payout address (2 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-05 · last up 2026-08-13

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

SITE PILLARS

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

recent checks (18) live · click to expand

TIME STATUS RESP CAUSE

15:22:23 UTC ● OK 279ms

15:06:25 UTC ● OK 233ms

14:50:25 UTC ● OK 262ms

14:34:17 UTC ● OK 257ms

14:18:25 UTC ● OK 274ms

14:02:24 UTC ● OK 459ms

13:46:24 UTC ● OK 295ms

13:30:22 UTC ● OK 279ms

13:14:23 UTC ● OK 163ms

12:58:28 UTC ● OK 309ms

12:42:24 UTC ● OK 342ms

12:26:24 UTC ● OK 395ms

12:10:21 UTC ● OK 148ms

11:54:24 UTC ● OK 273ms

11:38:24 UTC ● OK 325ms

11:22:24 UTC ● OK 315ms

11:06:24 UTC ● OK 421ms

10:50:24 UTC ● OK 362ms

EMBED THIS BADGE

Show that Melchior Video Context is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

status

Melchior Video Context uptime on x402-list — live uptime

// HTML

<a href="https://x402-list.com/services/melchior-video-context?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/melchior-video-context.svg" alt="Melchior Video Context listed on x402-list" height="28">
</a>

// Markdown

[![Melchior Video Context on x402-list](https://x402-list.com/badge/melchior-video-context.svg)](https://x402-list.com/services/melchior-video-context?utm_source=badge&utm_medium=referral&utm_campaign=embed)

// HTML · live uptime variant

<a href="https://x402-list.com/services/melchior-video-context?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/melchior-video-context.svg?data=uptime" alt="Melchior Video Context uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/melchior-video-context/update.