●

Exa

AI ✓ VERIFIED

verified until 2026-07-27

AI-native semantic/neural web search API. Pay-per-query via x402 for agents without API keys.

Pay from $0.007 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

UPTIME 24H 100% │ 7D 100% │ 30D 100%

BASE URL https://api.exa.ai │ WEBSITE https://exa.ai │ ENDPOINTS 1 │ NETWORK Base / Solana │ ASSET USDC │ MEMBER SINCE 2026-01-20 │ MONITORED SINCE 2026-04-15

ASSESSMENT

updated 1h 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: 952ms
avg response: 925ms
total checks: 7,232

compliance A (11/11)

11 of 11 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.007 (p45 in AI)

price (min): $0.007
category percentile (min): p45 in AI
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.

traction $39.23 30d · 205 buyers

volume 30d: $39.23
buyers 30d: 205
settlements 30d: 5,737
last settlement: 2026-07-20
top buyer share: 19% of 30d volume
trend 7d vs 30d: 0.88x the 30d daily rate
networks: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d

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

Provides semantic/neural web search capabilities through an API

category: web-search
in: body

searchaineuralweb

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

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	DESCRIPTION	PRICE	NETWORK	ASSET
POST	/search	Semantic/neural web search	$0.007	Base/Solana	USDC

1 endpoints

REQUEST / RESPONSE EXAMPLE

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

// request

curl -i -X POST 'https://api.exa.ai/search'

// 402 response (captured by monitor) · 1 payload · click to expand

[
  {
    "error": "Payment required to access this resource",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "acceptId": "legacy",
          "totalUsd": 0.006999999999999999,
          "breakdown": {
            "search": 0.006999999999999999
          }
        },
        "payTo": "0x6d6E695b09861467c7d462f5AAF31cF3540B9192",
        "amount": "7000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "acceptId": "solana-usdc-mainnet",
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "totalUsd": 0.006999999999999999,
          "breakdown": {
            "search": 0.006999999999999999
          }
        },
        "payTo": "12Ec2cJmfR1C9uwejzxcuMhUgEC7wDrLgm1wBvvR5w9E",
        "amount": "7000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://api.exa.ai/search",
      "mimeType": "application/json",
      "description": "Exa /search endpoint"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "type": "auto",
              "query": "example search query",
              "numResults": 10
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "results": [
                {
                  "url": "https://example.com",
                  "score": 0.99,
                  "title": "Example"
                }
              ]
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "bodyType",
                "body",
                "method"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "query"
                  ],
                  "properties": {
                    "type": {
                      "type": "string",
                      "description": "Search type: auto, keyword, neural, deep-lite, deep, deep-reasoning"
                    },
                    "query": {
                      "type": "string",
                      "description": "Search query"
                    },
                    "contents": {
                      "type": "object",
                      "description": "Content fields to include: text, highlights, summary"
                    },
                    "numResults": {
                      "type": "number",
                      "description": "Number of results to return (max 10 for x402)"
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      },
      "agentkit": {
        "info": {
          "uri": "https://api.exa.ai/search",
          "nonce": "a852f24b53ab559574b27668f6575a80",
          "domain": "api.exa.ai",
          "version": "1",
          "issuedAt": "2026-06-16T10:38:00.669Z",
          "resources": [
            "https://api.exa.ai/search"
          ],
          "statement": "Verify your agent is backed by a real human to access Exa"
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "domain",
            "address",
            "uri",
            "version",
            "chainId",
            "type",
            "nonce",
            "issuedAt",
            "signature"
          ],
          "properties": {
            "uri": {
              "type": "string",
              "format": "uri"
            },
            "type": {
              "type": "string"
            },
            "nonce": {
              "type": "string"
            },
            "domain": {
              "type": "string"
            },
            "address": {
              "type": "string"
            },
            "chainId": {
              "type": "string"
            },
            "version": {
              "type": "string"
            },
            "issuedAt": {
              "type": "string",
              "format": "date-time"
            },
            "notBefore": {
              "type": "string",
              "format": "date-time"
            },
            "requestId": {
              "type": "string"
            },
            "resources": {
              "type": "array",
              "items": {
                "type": "string",
                "format": "uri"
              }
            },
            "signature": {
              "type": "string"
            },
            "statement": {
              "type": "string"
            },
            "expirationTime": {
              "type": "string",
              "format": "date-time"
            }
          }
        },
        "_options": {
          "mode": {
            "type": "free-trial",
            "uses": 100
          },
          "network": "eip155:480",
          "statement": "Verify your agent is backed by a real human to access Exa"
        },
        "supportedChains": [
          {
            "type": "eip191",
            "chainId": "eip155:480"
          },
          {
            "type": "eip1271",
            "chainId": "eip155:480"
          }
        ]
      }
    },
    "x402Version": 2
  }
]

UPTIME

RESPONSE TIME

30d UPTIME 100%

UPTIME 30D 100%

AVG RESP 925ms

TOTAL CHECKS 7,244

RECENT CHECKS

TIME STATUS RESP

14:11:01 UTC ● OK 485ms

14:05:01 UTC ● OK 650ms

13:59:00 UTC ● OK 480ms

13:53:01 UTC ● OK 696ms

13:47:03 UTC ● OK 802ms

13:41:01 UTC ● OK 955ms

13:35:00 UTC ● OK 516ms

13:29:00 UTC ● OK 491ms

13:23:01 UTC ● OK 612ms

13:17:01 UTC ● OK 561ms

13:11:00 UTC ● OK 589ms

13:05:01 UTC ● OK 850ms

12:59:02 UTC ● OK 530ms

12:53:01 UTC ● OK 644ms

12:47:01 UTC ● OK 809ms

12:41:01 UTC ● OK 874ms

12:35:01 UTC ● OK 545ms

12:29:01 UTC ● OK 776ms

OVER TIME

All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/exa/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).

PRICE (captured 402, USD)

SUB-SCORES (uptime + x402 compliance)

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

11/11 checks pass · grade A

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

EMBED THIS BADGE

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

status

// HTML

<a href="https://x402-list.com/services/exa?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/exa.svg" alt="Exa listed on x402-list" height="28">
</a>

// Markdown

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

// HTML · live uptime variant

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