x402 List

x402 Protocol Service Directory

Neurobird Search

Data PAYMENT-READY

payment-ready until 2026-09-07

Web search for AI agents. One call fans out across several engines, fuses the rankings with reciprocal rank fusion, then fetches the top pages and returns the passages that answer the query already extracted, so a follow up fetch is usually unnecessary. Grounded answers carry quotes matched back against their source text, and a quote that fails the match is returned marked unverified rather than dropped. A second tool converts any URL to clean markdown.

Pay from $0.005 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-08-31 · no on-chain settlement recorded yet

BASE URL https://search.neurobird.com WEBSITE https://search.neurobird.com ENDPOINTS 1 NETWORK Base ASSET USDC MEMBER SINCE 2026-08-31 MONITORED SINCE 2026-08-31

VERDICT

ranking generation 3

solid 87/100 #167 of 260 in Data by measured score

What the score read on this service: status online, 100% uptime 24h (no 30d window yet), 404ms response p95, x402 compliance 14 of 14, $0.005 price against the category, on-chain traction measured. 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.

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 260 listings, this one among them. That set is wider than the 260 the position above is counted against, 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.

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.

ALTERNATIVES IN DATA

Other Data services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
API Acre strong 99 99.7% ---
WebberSites x402 Data API strong 99 100% ---
IPIntel.ai x402 Tools strong 99 100% ---
AgentToll strong 98 100% ---
KR Crypto Intelligence strong 98 100% ---
5 of 259 other ranked services in Data · see the whole category

ASSESSMENT

updated 2h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 100%
uptime 24h
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
404ms
avg response
404ms
total checks
1

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 $0.005 (p37 in Data)
price (min)
$0.005
category percentile (min)
p37 in Data
endpoints / prices
1 / 1
model
flat
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
2298d
registrar
Internet Domain Service BS Corp
hosting
custom
domain created
2020-05-15

Identity facts, not a risk score.

traction $0.00 30d · 0 buyers
volume 30d
$0.00
buyers 30d
0
settlements 30d
0
measured since
--- (start of our harvest window)
last settlement
---
top buyer share
-
trend 7d vs 30d
-
networks
eip155:8453
volume all-time
$0
settlements all-time
0
median settlement 30d
-
max settlement 30d
-
settled via
-

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

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

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /paid/search $0.005 Base USDC header
1 endpoints

REQUEST / RESPONSE EXAMPLE

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

// request
curl -i 'https://search.neurobird.com/paid/search'
// 402 response (captured by monitor) · 1 payload · click to expand
[
  {
    "error": "Payment required for this resource",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xB8156B85D26df44A662d151EE00d1205FC254c47",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      }
    ],
    "priceUsd": 0.005,
    "resource": {
      "url": "https://search.neurobird.com/paid/search",
      "tags": [
        "search",
        "web-search",
        "rag",
        "agents",
        "mcp"
      ],
      "iconUrl": "https://search.neurobird.com/assets/img/favicon.svg",
      "mimeType": "application/json",
      "description": "Neurobird Search: one basic web search. Ranked results with page passages already extracted.",
      "serviceName": "Neurobird Search API"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "POST",
            "bodyFields": {
              "query": "who acquired Deep Instinct",
              "max_results": 5,
              "search_depth": "basic",
              "include_answer": false
            }
          },
          "output": {
            "type": "json",
            "example": {
              "query": "who acquired Deep Instinct",
              "results": [
                {
                  "url": "https://example.com/article",
                  "score": 0.94,
                  "title": "Example result title",
                  "content": "The passage from the page that answers the query, already extracted so no second fetch is needed."
                }
              ],
              "response_time": 1.8
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "query"
          ],
          "properties": {
            "query": {
              "type": "string",
              "maxLength": 2000,
              "minLength": 1,
              "description": "What to search for."
            },
            "max_results": {
              "type": "integer",
              "default": 5,
              "maximum": 30,
              "minimum": 1
            },
            "search_depth": {
              "enum": [
                "basic",
                "standard",
                "advanced"
              ],
              "type": "string",
              "default": "basic",
              "description": "advanced expands the query and reads more pages."
            },
            "include_answer": {
              "type": "boolean",
              "default": false,
              "description": "Return a grounded answer whose quotes are checked against their sources."
            }
          },
          "additionalProperties": true
        }
      }
    },
    "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/neurobird-search/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
08-31 · uptime 100.0% · 544ms avg08-3108-31
30d UPTIME 100%
RESPONSE TIME
08-31 · 544ms avg08-31 · 544ms avg08-3108-31
AVG RESP 544ms
PRICE (captured 402, USD)
building price history ($0.005)
SUB-SCORES (uptime + x402 compliance)
building assessment history (1 day so far)

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

VOLUME (on-chain settlement, USD)
no on-chain volume yet
DISTINCT BUYERS
no distinct buyers yet

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-31 · last up 2026-08-31

  • 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 (8) live · click to expand
TIME STATUS RESP CAUSE
● OK 811ms
● OK 534ms
● OK 463ms
● OK 491ms
● OK 736ms
● OK 665ms
● OK 250ms
● OK 404ms

EMBED THIS BADGE

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

Neurobird Search listed on x402-list
status
Neurobird Search uptime on x402-list
live uptime
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</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.

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To request delisting, email info@x402-list.com or update your listing at /services/neurobird-search/update.