Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (19 of 40 points, scaled to 100); the A2A card criteria do not apply.

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partial Live endpoint 10/25

The host publishes a payment manifest; we have not yet observed a live 402 challenge.

partial Verified Identity 5/10

Provider declared: api.xactum.com (https://api.xactum.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.

How to earn +5 points

Verify your domain ownership

Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.

Docs

pass Freshness + modern flags 4/5

seen in upstream source within 0d

n/a Agent card · Protocol version · JWS signature · Uptime track record · Skill declaration · Security declaration

Activity

last 24h · 0 invocations No personal data recorded

No activity in the last 7 days.

Listing history

1 snapshot

Snapshots

Agent card snapshots
Captured	Hash	Snapshot
2026-11-08 22:54:49 current	`a8da6a920c09…`	view →

Endpoints

Pricing x402 Self-declared · /.well-known/x402

Endpoint	Price	Currency
`https://api.xactum.com/v1/verify/price`	—
`https://api.xactum.com/v1/verify/model`	—

Try it ↗

Settlement wallet: 0xaec32c04b2bbb1fbf7d59a8d9650c5d3cf9ab811 on Base · basescan ↗

Listed by facilitators Coinbase CDP · 1

Observed on-chain inflow verified on-chain

Last 7d

                  $0.03
                

1 transfer · synced 2026-11-09

USDC on Base. Inflow to a wallet, not proof that every transfer was a paid call.

How it was settled and checked

$0.03 in the ledger, not classified yet.

Reproducible via eth_getLogs on USDC Transfer events to the wallet. How we classify

Payment authenticity How we measure this →

Single payer observed 2/5

Payer identities observed; a single payer accounts for effectively all observed volume.

Most observed volume landed on a single day of the window.

$0.03 assessed 1 transactions 1/8 days active · 30d window Payer identities available

A low label reflects what we can observe, not a finding about the operator.

How this was checked

2 evidence caveats · measured 2026-11-10.
Checks: daily volume aggregate, active day cadence, amount regularity, spike concentration, settlement wallet overlap, payer uniqueness, payer concentration, payer recurrence, payer payee overlap.
Sources: agent revenue daily, agents payment wallet, agent payment transactions.

Payer concentration and 7 / 30 / 90-day windows: wallet_intel, payment_intelligence · included in Pro

Agent card	`https://api.xactum.com`
Provider	https://api.xactum.com
Docs	https://api.xactum.com

Discovered via

agentic market

Health · last 1 probes

Probe log

When	HTTP	Live JSON-RPC	Latency
2026-11-09 01:54:06	404	—	—

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Embed a badge

Updates itself and links back here.

[![Agenstry grade](https://agenstry.com/badge/api.xactum.com.svg)](https://agenstry.com/agents/api.xactum.com)
[![Verified Business](https://agenstry.com/badge/api.xactum.com/identity.svg)](https://agenstry.com/agents/api.xactum.com)
[![Uptime](https://agenstry.com/badge/api.xactum.com/uptime.svg)](https://agenstry.com/agents/api.xactum.com)
[![A2A version](https://agenstry.com/badge/api.xactum.com/protocol.svg)](https://agenstry.com/agents/api.xactum.com)

Audit evidence

JSON for vendor reviews. Signed copy verifies against our JWKS.

audit.json audit.json (JWS-signed) verification history

Raw agent card JSON

{
  "_source": "agentic.market",
  "service": {
    "id": "api-xactum-com",
    "name": "api.xactum.com",
    "description": "",
    "domain": "api.xactum.com",
    "provider": "api.xactum.com",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://api.xactum.com/v1/verify/price",
        "description": "LLM price check: is a quoted or paid price competitive against an independent reference? XACTUM verifies, does not route. No referral fees or provider benefits. Advisory only; business use only; payments final. Terms xactum-tos-2.0 sha256:63f07bf68c3350cdd57d7207b533d8d5865e108f6e41afd7a06ae6f97eb6cd3f at https://api.xactum.com/terms/xactum-tos-2.0. Paying = acceptance. No resale, caching or training on outputs.",
        "pricing": {
          "amount": "0.03",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "acceptTerms",
            "type": "object",
            "description": "",
            "example": null,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "businessUse",
            "type": "boolean",
            "description": "",
            "example": true,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "query",
            "type": "object",
            "description": "",
            "example": null,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "XACTUM",
        "tags": [
          "verification",
          "llm",
          "price-check",
          "model-verification",
          "oracle"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.03",
      "maxAmount": "0.03",
      "avgCostPerTransaction": "0.03",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "XACTUM",
    "tags": [
      "verification",
      "llm",
      "price-check",
      "model-verification",
      "oracle"
    ],
    "iconUrl": ""
  }
}