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AgentSearch

payment-readyonline

payment-ready until 2026-11-18

Pay-per-call web tools for AI agents over x402 v2 on Base (USDC): live web search ($0.008), URL-to-markdown extract ($0.004) and headless-browser render for JavaScript pages ($0.010).

Compare: all web search APIs

agentsearchhq.com ↗

Call it x402 v2

x402 v2

Base URL
https://api.agentsearchhq.com
Payment
x402 v2, header channel
$ curl -i -X POST 'https://api.agentsearchhq.com/x402/v1/extract'

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

Endpoints 3 paid routes on api.agentsearchhq.com

POST/x402/v1/extractBase$0.004since 11-11
POST/x402/v1/renderBase$0.01since 11-11
POST/x402/v1/searchBase$0.008since 11-11

Prices as captured in the 402 response: median $0.008 across the 3 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/x402/v1/extractURL to markdown: fetch any public web page (article, docs, blog, product page) and get clean, LLM-ready markdown plus title, links and fetch metadata, without HTML, scripts or menus. Optional max_chars and include_links keep the output small. A web scraper and page extractor for agents and RAG, the default tool when you already have a URL. For JavaScript-heavy pages that come back empty, use /x402/v1/render. $0.004 USDC per call on Base; failed or empty extractions are not charged.$0.004BaseUSDCheadersince 11-11
POST/x402/v1/renderHeadless browser render for JavaScript-heavy pages and single-page apps: loads a public URL in headless Chromium, runs its JavaScript and returns the final page as clean markdown with title, links and HTTP status. Use it to render JavaScript or scrape dynamic sites when a plain fetch or /x402/v1/extract returns an empty shell. $0.01 USDC per call on Base; failed or empty renders are not charged.$0.01BaseUSDCheadersince 11-11
POST/x402/v1/searchWeb search API for AI agents: live, ranked results as clean JSON (title, URL, snippet, score, domain, publish date), 1-10 per call, with optional freshness or date range, country, language and include/exclude domain filters. For grounding answers, RAG, fact checks and current sources. Read a hit with /x402/v1/extract, or use /x402/v1/search_and_read for results plus page text in one call. $0.008 USDC per call on Base; calls that return no results are not charged.$0.008BaseUSDCheadersince 11-11

Payment evidence

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

First of 3 payloads captured by the monitor.

239 lines, scroll inside

{
  "error": "payment_required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xC49B157887e51c21CB655f39CF65D6a4c2a4C337",
      "amount": "8000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.agentsearchhq.com/x402/v1/search",
    "tags": [
      "web-search",
      "search-api",
      "serp",
      "rag",
      "research"
    ],
    "iconUrl": "https://agentsearchhq.com/icon-512.png",
    "mimeType": "application/json",
    "description": "Web search API for AI agents: live, ranked results as clean JSON (title, URL, snippet, score, domain, publish date), 1-10 per call, with optional freshness or date range, country, language and include/exclude domain filters. For grounding answers, RAG, fact checks and current sources. Read a hit with /x402/v1/extract, or use /x402/v1/search_and_read for results plus page text in one call. $0.008 USDC per call on Base; calls that return no results are not charged.",
    "serviceName": "Web Search API | AgentSearch"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "query": "latest x402 protocol news",
            "max_results": 5
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "query": "latest x402 protocol news",
            "results": [
              {
                "url": "https://www.x402.org/",
                "score": 0.91,
                "title": "x402 - payments protocol for the internet",
                "domain": "x402.org",
                "content": "x402 is an open payment standard built on HTTP 402 ...",
                "published_date": null
              }
            ],
            "result_count": 1,
            "retrieved_at": "2026-11-09T12:00:00Z"
          }
        }
      },
      "schema": {
        "type": "object",
        "$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": {
                  "query": {
                    "type": "string",
                    "maxLength": 400,
                    "minLength": 1,
                    "description": "Search query in natural language or keywords."
                  },
                  "country": {
                    "type": "string",
                    "maxLength": 2,
                    "minLength": 2,
                    "description": "2-letter ISO 3166-1 country code to localise results, e.g. us, gb, de."
                  },
                  "date_to": {
                    "type": "string",
                    "format": "date",
                    "description": "Latest publish date, YYYY-MM-DD."
                  },
                  "language": {
                    "type": "string",
                    "pattern": "^[A-Za-z]{2}(-[A-Za-z]{2})?$",
                    "description": "ISO 639-1 interface language, e.g. en, es or pt-BR."
                  },
                  "date_from": {
                    "type": "string",
                    "format": "date",
                    "description": "Earliest publish date, YYYY-MM-DD."
                  },
                  "freshness": {
                    "enum": [
                      "day",
                      "week",
                      "month",
                      "year"
                    ],
                    "type": "string",
                    "description": "Only results from the past day, week, month or year. Do not combine with date_from/date_to."
                  },
                  "max_results": {
                    "type": "integer",
                    "default": 5,
                    "maximum": 10,
                    "minimum": 1,
                    "description": "Maximum number of results (1-10)."
                  },
                  "exclude_domains": {
                    "type": "array",
                    "items": {
                      "type": "string",
                      "maxLength": 253
                    },
                    "maxItems": 5,
                    "description": "Never return results from these domains, up to 5."
                  },
                  "include_domains": {
                    "type": "array",
                    "items": {
                      "type": "string",
                      "maxLength": 253
                    },
                    "maxItems": 5,
                    "description": "Only return results from these domains (subdomains included), up to 5."
                  }
                },
                "additionalProperties": false
              },
              "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",
                "required": [
                  "results"
                ],
                "properties": {
                  "query": {
                    "type": "string"
                  },
                  "filters": {
                    "type": "object",
                    "description": "Echo of the filters that were applied."
                  },
                  "results": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "properties": {
                        "url": {
                          "type": "string"
                        },
                        "score": {
                          "type": "number"
                        },
                        "title": {
                          "type": "string"
                        },
                        "domain": {
                          "type": "string"
                        },
                        "content": {
                          "type": "string"
                        },
                        "published_date": {
                          "type": [
                            "string",
                            "null"
                          ]
                        }
                      }
                    }
                  },
                  "result_count": {
                    "type": "integer"
                  },
                  "retrieved_at": {
                    "type": [
                      "string",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}
Other captured 402 responses (2)

Captured payload 2 of 3

{
  "error": "payment_required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xC49B157887e51c21CB655f39CF65D6a4c2a4C337",
      "amount": "4000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.agentsearchhq.com/x402/v1/extract",
    "tags": [
      "url-to-markdown",
      "web-scraping",
      "web-extract",
      "markdown",
      "scrape"
    ],
    "iconUrl": "https://agentsearchhq.com/icon-512.png",
    "mimeType": "application/json",
    "description": "URL to markdown: fetch any public web page (article, docs, blog, product page) and get clean, LLM-ready markdown plus title, links and fetch metadata, without HTML, scripts or menus. Optional max_chars and include_links keep the output small. A web scraper and page extractor for agents and RAG, the default tool when you already have a URL. For JavaScript-heavy pages that come back empty, use /x402/v1/render. $0.004 USDC per call on Base; failed or empty extractions are not charged.",
    "serviceName": "URL to Markdown | AgentSearch"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "url": "https://example.com/",
            "meta": {
              "chars": 167,
              "truncated": false,
              "status_code": 200,
              "content_type": "text/html"
            },
            "text": "",
            "links": [
              {
                "href": "https://www.iana.org/domains/example",
                "text": "More information..."
              }
            ],
            "title": "Example Domain",
            "markdown": "# Example Domain\n\nThis domain is for use in illustrative examples ..."
          }
        }
      },
      "schema": {
        "type": "object",
        "$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",
                    "format": "uri",
                    "maxLength": 2048,
                    "description": "Absolute public http(s) URL of the page."
                  },
                  "max_chars": {
                    "type": "integer",
                    "maximum": 50000,
                    "minimum": 1,
                    "description": "Cut markdown/text to at most this many characters (meta.truncated is set). Default 50000."
                  },
                  "include_links": {
                    "type": "boolean",
                    "default": true,
                    "description": "Return the page's links. Set false to save tokens."
                  }
                },
                "additionalProperties": false
              },
              "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",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string"
                  },
                  "meta": {
                    "type": "object"
                  },
                  "text": {
                    "type": "string"
                  },
                  "links": {
                    "type": "array"
                  },
                  "title": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "markdown": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 3

{
  "error": "payment_required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xC49B157887e51c21CB655f39CF65D6a4c2a4C337",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.agentsearchhq.com/x402/v1/render",
    "tags": [
      "headless-browser",
      "javascript-render",
      "web-scraping",
      "spa",
      "browser"
    ],
    "iconUrl": "https://agentsearchhq.com/icon-512.png",
    "mimeType": "application/json",
    "description": "Headless browser render for JavaScript-heavy pages and single-page apps: loads a public URL in headless Chromium, runs its JavaScript and returns the final page as clean markdown with title, links and HTTP status. Use it to render JavaScript or scrape dynamic sites when a plain fetch or /x402/v1/extract returns an empty shell. $0.01 USDC per call on Base; failed or empty renders are not charged.",
    "serviceName": "Headless Browser | AgentSearch"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "url": "https://example.com"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "url": "https://example.com/",
            "meta": {
              "js": true,
              "chars": 167,
              "render_ms": 820,
              "truncated": false
            },
            "links": [
              {
                "href": "https://www.iana.org/domains/example",
                "text": "More information..."
              }
            ],
            "title": "Example Domain",
            "markdown": "# Example Domain\n\nThis domain is for use in illustrative examples ...",
            "status_code": 200
          }
        }
      },
      "schema": {
        "type": "object",
        "$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",
                    "format": "uri",
                    "maxLength": 2048,
                    "description": "Absolute public http(s) URL of the page."
                  }
                },
                "additionalProperties": false
              },
              "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",
                "required": [
                  "url"
                ],
                "properties": {
                  "url": {
                    "type": "string"
                  },
                  "meta": {
                    "type": "object"
                  },
                  "links": {
                    "type": "array"
                  },
                  "title": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "markdown": {
                    "type": "string"
                  },
                  "status_code": {
                    "type": [
                      "integer",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

97/100 Strong

#13 of 492 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
100% uptime since 11-11
Compliance
A 14/14 checks pass
Price
$0.004 to $0.01 p35 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 2026-11-11. Last up 2026-11-11.

── 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), 162ms response p95, x402 compliance 14 of 14, $0.004 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 492 listings, this one among them: the same 492 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 over x402 v2 on Base (USDC): live web search ($0.008), URL-to-markdown extract ($0.004) and headless-browser render for JavaScript pages ($0.010). No API key or account; settled via the Coinbase CDP facilitator only after a successful answer, so failed or empty calls are not charged.

AgentSearch 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: 2026-10-13 to 2026-11-11 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
162ms
avg response
162ms
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)
$0.004
price (max)
$0.01
category percentile (min)
p35 in Data
category percentile (max)
p24 in Data
endpoints / prices
3 / 3
model
tiered
stability
100%

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
56d
registrar
Cloudflare, Inc.
hosting
custom
domain created
2026-09-16

Identity facts, not a risk score.

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

member since
2026-11-11
Recent checks
Latest 4 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online402569ms3
Online4022426ms3
Online402265ms3
Online402162ms3

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 214ms, avg 214ms, max 214ms

10-13 to 11-11* UTC

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/agentsearch/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, 2026-11-11 to 2026-11-11: uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayUptimeResponseCompliancePrice percentileSite signals
2026-11-11*100%213.50ms14/14p352/6

Alternatives in Data

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Imagio Relay · 57 x402 tools for agents (web-intel, trade math, infra, docs) strong 98/100 100% up 30d --- 30d
Weather strong 98/100 99.9% up 30d --- 30d
Agent Tools (pay-per-call utilities for AI agents) strong 98/100 100% up 30d --- 30d

5 of 491 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/agentsearch?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/agentsearch.svg" alt="AgentSearch listed on x402-list" height="28">
</a>

Markdown

[![AgentSearch on x402-list](https://x402-list.com/badge/agentsearch.svg)](https://x402-list.com/services/agentsearch?utm_source=badge&utm_medium=referral&utm_campaign=embed)

HTML, live uptime variant

<a href="https://x402-list.com/services/agentsearch?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/agentsearch.svg?data=uptime" alt="AgentSearch 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.