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Quant Agent Shop

payment-readyonline

payment-ready until 2026-11-04

Pay-per-call web tools for AI agents: Google web search, clean page reading as Markdown, and PDFs from Markdown or a URL.

Compare: all web search APIs · all PDF APIs

quantagentshop.com ↗

Call it x402 v2

x402 v2

Base URL
https://quantagentshop.com
Payment
x402 v2, header channel
$ curl -i -X POST 'https://quantagentshop.com/v1/fetch-page'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 4 paid routes on quantagentshop.com

POST/v1/fetch-pageBase$0.0099since 10-28
POST/v1/pdf/from-markdownBase$0.0099since 10-28
POST/v1/pdf/from-urlBase$0.0099since 10-28
POST/v1/web-searchBase$0.0099since 10-28

Prices as captured in the 402 response: median $0.0099 across the 4 endpoints, unchanged since first capture.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
POST/v1/fetch-pagePage fetch. Send a public URL; returns the page title and its main content as clean Markdown or plain text, with navigation, scripts and ads removed. Use to read an article, docs page or listing. Not for pages behind logins, PDFs or images; no JavaScript rendering. Reads the first 1 MB of a page. Social networks (Facebook, Instagram, LinkedIn, X, Reddit, YouTube, TikTok and similar) are refused. Typical response under 2 s. Failed calls are not charged.$0.0099BaseUSDCheadersince 10-28
POST/v1/pdf/from-markdownMarkdown to PDF. Send Markdown (headings, lists, tables, links, bold, italic); returns an A4 PDF as base64 in JSON. Use to hand a person a printable report or invoice-style page. Images and raw HTML are not rendered. Up to 50,000 characters. Typical response under 1 s. Failed calls are not charged.$0.0099BaseUSDCheadersince 10-28
POST/v1/pdf/from-urlWeb page to PDF. Send a public URL; returns the page's main content as a clean A4 PDF (base64 in JSON), text and tables only, without navigation or ads. Use to archive or share an article. No JavaScript rendering, images or pages behind logins. Social networks (Facebook, Instagram, LinkedIn, X, Reddit, YouTube, TikTok and similar) are refused. Typical response under 3 s. Failed calls are not charged.$0.0099BaseUSDCheadersince 10-28
POST/v1/web-searchWeb search. Send a query; returns up to 20 ranked Google web results with title, URL, snippet and date where known. Use when an agent needs links to read or to check what exists on the web. Not for reading page content (use /v1/fetch-page) or for a written answer (use /v1/research-answer). Typical response 1 to 2 s. Failed calls are not charged.$0.0099BaseUSDCheadersince 10-28

Payment evidence

402 payload captured at . Check evidence JSON · Measurement methodology.

First of 4 payloads captured by the monitor.

153 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4d8d8D4f04512029172e0176744Eec4AE5238309",
      "amount": "9900",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://quantagentshop.com/v1/web-search",
    "tags": [
      "web-search",
      "search"
    ],
    "mimeType": "application/json",
    "description": "Web search. Send a query; returns up to 20 ranked Google web results with title, URL, snippet and date where known. Use when an agent needs links to read or to check what exists on the web. Not for reading page content (use /v1/fetch-page) or for a written answer (use /v1/research-answer). Typical response 1 to 2 s. Failed calls are not charged.",
    "serviceName": "Quant Agent Shop"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "num": 10,
            "query": "x402 payment protocol facilitator fees"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "query": "x402 payment protocol facilitator fees",
            "source": "Google web results",
            "results": [
              {
                "url": "https://www.x402.org/",
                "date": null,
                "title": "x402 - Payment Required",
                "snippet": "An open protocol for internet-native payments...",
                "position": 1
              }
            ],
            "searched_at": "2026-10-22T09:00:00+00:00"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "query"
                ],
                "properties": {
                  "num": {
                    "type": "integer",
                    "title": "Num",
                    "default": 10,
                    "maximum": 20,
                    "minimum": 1,
                    "description": "How many results to return, 1 to 20."
                  },
                  "query": {
                    "type": "string",
                    "title": "Query",
                    "maxLength": 400,
                    "minLength": 2,
                    "description": "Search terms, as typed into a search engine."
                  },
                  "country": {
                    "anyOf": [
                      {
                        "type": "string",
                        "pattern": "^[a-z]{2}$"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "title": "Country",
                    "default": null,
                    "description": "Optional two-letter country code, lower case."
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "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
}
Other captured 402 responses (3)

Captured payload 2 of 4

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4d8d8D4f04512029172e0176744Eec4AE5238309",
      "amount": "9900",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://quantagentshop.com/v1/fetch-page",
    "tags": [
      "fetch-page",
      "web"
    ],
    "mimeType": "application/json",
    "description": "Page fetch. Send a public URL; returns the page title and its main content as clean Markdown or plain text, with navigation, scripts and ads removed. Use to read an article, docs page or listing. Not for pages behind logins, PDFs or images; no JavaScript rendering. Reads the first 1 MB of a page. Social networks (Facebook, Instagram, LinkedIn, X, Reddit, YouTube, TikTok and similar) are refused. Typical response under 2 s. Failed calls are not charged.",
    "serviceName": "Quant Agent Shop"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://www.x402.org/",
            "format": "markdown",
            "max_chars": 20000
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "url": "https://www.x402.org/",
            "chars": 1830,
            "title": "x402",
            "format": "markdown",
            "content": "# x402\n\nAn open protocol for internet-native payments...",
            "final_url": "https://www.x402.org/",
            "truncated": false,
            "fetched_at": "2026-10-22T09:00:00+00:00"
          }
        }
      },
      "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": {
                "type": "object",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "title": "Url",
                    "format": "uri",
                    "maxLength": 2083,
                    "minLength": 1,
                    "description": "Public http or https page to read."
                  },
                  "format": {
                    "enum": [
                      "markdown",
                      "text"
                    ],
                    "type": "string",
                    "title": "Format",
                    "default": "markdown",
                    "description": "markdown keeps headings, links and lists; text is plain."
                  },
                  "max_chars": {
                    "type": "integer",
                    "title": "Max Chars",
                    "default": 20000,
                    "maximum": 100000,
                    "minimum": 500,
                    "description": "Cut the returned content at this many characters."
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "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
}

Captured payload 3 of 4

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4d8d8D4f04512029172e0176744Eec4AE5238309",
      "amount": "9900",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://quantagentshop.com/v1/pdf/from-markdown",
    "tags": [
      "pdf-from-markdown",
      "documents"
    ],
    "mimeType": "application/json",
    "description": "Markdown to PDF. Send Markdown (headings, lists, tables, links, bold, italic); returns an A4 PDF as base64 in JSON. Use to hand a person a printable report or invoice-style page. Images and raw HTML are not rendered. Up to 50,000 characters. Typical response under 1 s. Failed calls are not charged.",
    "serviceName": "Quant Agent Shop"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "title": "Weekly report",
            "markdown": "# Weekly report\n\n- Calls: 120\n- Errors: 0\n"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "bytes": 1840,
            "filename": "weekly-report.pdf",
            "created_at": "2026-10-22T09:00:00+00:00",
            "pdf_base64": "JVBERi0xLjMK...",
            "content_type": "application/pdf"
          }
        }
      },
      "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": {
                "type": "object",
                "required": [
                  "markdown"
                ],
                "properties": {
                  "title": {
                    "anyOf": [
                      {
                        "type": "string",
                        "maxLength": 120
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "title": "Title",
                    "default": null,
                    "description": "Document title; defaults to the first # heading."
                  },
                  "markdown": {
                    "type": "string",
                    "title": "Markdown",
                    "maxLength": 50000,
                    "minLength": 1,
                    "description": "Markdown text: headings, lists, tables, links, bold and italic."
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "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
}

Captured payload 4 of 4

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4d8d8D4f04512029172e0176744Eec4AE5238309",
      "amount": "9900",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://quantagentshop.com/v1/pdf/from-url",
    "tags": [
      "pdf-from-url",
      "documents"
    ],
    "mimeType": "application/json",
    "description": "Web page to PDF. Send a public URL; returns the page's main content as a clean A4 PDF (base64 in JSON), text and tables only, without navigation or ads. Use to archive or share an article. No JavaScript rendering, images or pages behind logins. Social networks (Facebook, Instagram, LinkedIn, X, Reddit, YouTube, TikTok and similar) are refused. Typical response under 3 s. Failed calls are not charged.",
    "serviceName": "Quant Agent Shop"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://www.x402.org/"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "bytes": 5210,
            "filename": "x402.pdf",
            "created_at": "2026-10-22T09:00:00+00:00",
            "pdf_base64": "JVBERi0xLjMK...",
            "source_url": "https://www.x402.org/",
            "content_type": "application/pdf"
          }
        }
      },
      "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": {
                "type": "object",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string",
                    "title": "Url",
                    "format": "uri",
                    "maxLength": 2083,
                    "minLength": 1,
                    "description": "Public http or https page to turn into a PDF."
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "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
}

Can I trust it score from our own monitoring

score from our own monitoring

96/100 Strong

#4 of 440 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
100% uptime since 10-28
Compliance
A 14/14 checks pass
Price
$0.0099 p48 in Data
Risk
clean no risk flag
Traction
---
14/14 compliance checks
  • 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

402 terms unchanged since 2026-10-28. Last up 2026-10-28.

── Site signals

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
How the score works

What the score read on this service: status online, 100% uptime, latest daily rollup (no 30d window yet), 156ms response p95, x402 compliance 14 of 14, $0.0099 price against the category. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 440 listings, this one among them: the same 440 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

All measured facts

What it does

Pay-per-call web tools for AI agents: Google web search, clean page reading as Markdown, and PDFs from Markdown or a URL. USDC on Base over x402, no account or API key; failed calls are not charged.

Quant Agent Shop is a listed x402 Data API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.

Page rendered at . This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-09-29 to 2026-10-28 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · Data

uptime · latest daily rollup
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
156ms
avg response
156ms
total checks
1

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

price (min)
$0.0099
category percentile (min)
p48 in Data
endpoints / prices
4 / 1
model
flat
stability
0%

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
6d
registrar
Cloudflare, Inc.
hosting
custom
domain created
2026-10-22

Identity facts, not a risk score.

On-chain traction has not been assessed for this service yet.

member since
2026-10-28
Recent checks
Latest 9 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online402280ms4
Online402157ms4
Online402173ms4
Online402312ms4
Online402145ms4
Online402101ms4
Online402151ms4
Online402134ms4
Online402156ms4

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume

On-chain traction has not been assessed for this service yet.

Uptime no completed-day data
Uptime
no completed-day data

On-chain traction has not been assessed for this service yet.

More charts
Response time daily average, ms min 179ms, avg 179ms, max 179ms

09-29 to 10-28* UTC

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/quant-agent-shop/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-10-28 to 2026-10-28: uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayUptimeResponseCompliancePrice percentileSite signals
2026-10-28*100%178.78ms14/14p485/6

Alternatives in Data

Money Reactor strong 99/100 --- up 30d --- 30d
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claw402 strong 97/100 100% up 30d $1.2k 30d
glim.sh strong 95/100 100% up 30d $34.59 30d
cn402 strong 93/100 100% up 30d $37.62 30d

5 of 439 other ranked services in Data, ordered by the same measured score.

see the whole category

Own this service?

Keep this listing accurate. Ownership is proven with a domain check and every change is reviewed by hand.

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)
Embed a badge

HTML

<a href="https://x402-list.com/services/quant-agent-shop?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/quant-agent-shop.svg" alt="Quant Agent Shop listed on x402-list" height="28">
</a>

Markdown

[![Quant Agent Shop on x402-list](https://x402-list.com/badge/quant-agent-shop.svg)](https://x402-list.com/services/quant-agent-shop?utm_source=badge&utm_medium=referral&utm_campaign=embed)

HTML, live uptime variant

<a href="https://x402-list.com/services/quant-agent-shop?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/quant-agent-shop.svg?data=uptime" alt="Quant Agent Shop uptime on x402-list" height="28">
</a>
Delisting

To request delisting, email info@x402-list.com with the service name, slug, or URL. Removal is free and does not require proof of ownership. See all free email requests.