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📊 Intel view 📋 Audit JSON 🔄 Changelog
60
💰 Paid API data

api.firstmention.uk

api.firstmention.uk · api.firstmention.uk

x402 market intelligence. Free full-text search over ~60k live x402 listings. Paid $0.01: /verdict vets one endpoint (30-day distinct payers, calls, price percentile among tag peers, freshness, score) and /demandreport gives per-tag demand and gaps.

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🛡
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Verify the domain api.firstmention.uk via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
60/100
grade C · 3 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
not yet measured
wallet declared · scan pending
Invocations · 7d
0
no calls observed
Listing drift · 7d
changed
4 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
click to expand breakdown click to collapse breakdown
n/a Agent card n/a
Not applicable: a paid API listed by agentic.market. The host serves no A2A agent card at /.well-known/agent-card.json, so the card criteria are not scored.
partial Live endpoint 15/25
Our probe received an HTTP 402 payment challenge from the host: live, but paid.
n/a Protocol version n/a
Not applicable: no A2A agent card served.
n/a JWS signature n/a
Not applicable: no A2A agent card served.
n/a Uptime track record n/a
Not applicable: our probes looked for an A2A agent card, which this host does not serve. That says nothing about the API's availability, so it is not graded.
n/a Skill declaration n/a
Not applicable: no A2A agent card served.
partial Verified Identity 5/10
Provider declared: api.firstmention.uk (https://api.firstmention.uk). 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 Security declaration n/a
Not applicable: no A2A agent card served.
Listing drift detected. This catalogue entry changed within the last 7 days; the history keeps each version.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Listing history

4 snapshots drifted 3× Every change to the catalogue entry
Agent card snapshots
Captured Hash Snapshot
2026-10-27 16:22:53 current 4bd5f373f8d2… view →
2026-10-27 05:00:21 f746ad24d8f3… view →
2026-10-26 21:16:40 1908c13be3da… view →
2026-10-26 12:08:09 63a123817b80… view →
Uptime
not graded
catalogue listing · no agent card to probe
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USDC Verified live · 402 challenge Dispute or improve this rating
From $0.0100 per call
Endpoint Price Currency
https://api.firstmention.uk/s/basedue/due 0.01 USDC
https://api.firstmention.uk/s/basedue/exit 0.01 USDC
https://api.firstmention.uk/s/chainread/tx 0.01 USDC
https://api.firstmention.uk/s/agentkit/convert — USDC
https://api.firstmention.uk/s/agentkit/datetime — USDC
https://api.firstmention.uk/s/agentkit/extract — USDC
https://api.firstmention.uk/s/agentkit/validate — USDC
https://api.firstmention.uk/s/basedue/price — USDC
https://api.firstmention.uk/s/basedue/report — USDC
https://api.firstmention.uk/s/bizcal-api/day — USDC
https://api.firstmention.uk/s/bizcal-api/add — USDC
https://api.firstmention.uk/s/bizcal-api/between — USDC
https://api.firstmention.uk/s/bizcal-api/year — USDC
https://api.firstmention.uk/s/chainread/network — USDC
https://api.firstmention.uk/s/chainread/block — USDC
https://api.firstmention.uk/s/chainread/balance — USDC
https://api.firstmention.uk/s/chainread/token — USDC
https://api.firstmention.uk/s/chainread/nonce — USDC
https://api.firstmention.uk/s/chainread/gas — USDC
https://api.firstmention.uk/s/chainread/code — USDC
https://api.firstmention.uk/s/chainread/verdict — USDC
https://api.firstmention.uk/s/chainread/batch — USDC
https://api.firstmention.uk/s/check-sanctions/screen — USDC
https://api.firstmention.uk/s/check-sanctions/address — USDC
https://api.firstmention.uk/s/check-sanctions/batch — USDC
https://api.firstmention.uk/s/check-sanctions/changes — USDC
https://api.firstmention.uk/s/check-sanctions/verdict — USDC
https://api.firstmention.uk/s/chgwatch/diff — USDC
https://api.firstmention.uk/s/chgwatch/diffmulti — USDC
https://api.firstmention.uk/s/company-facts/lookup — USDC
https://api.firstmention.uk/s/company-facts/ticker — USDC
https://api.firstmention.uk/s/company-facts/domain — USDC
https://api.firstmention.uk/s/company-facts/resolve — USDC
https://api.firstmention.uk/s/composite/brief — USDC
https://api.firstmention.uk/s/composite/watchlist — USDC
https://api.firstmention.uk/s/composite/filings — USDC
https://api.firstmention.uk/s/domain-intel/lookup — USDC
https://api.firstmention.uk/s/domain-intel/dns — USDC
https://api.firstmention.uk/s/domain-intel/email — USDC
https://api.firstmention.uk/s/domain-intel/batch — USDC
https://api.firstmention.uk/s/edgar/company — USDC
https://api.firstmention.uk/s/edgar/financials — USDC
https://api.firstmention.uk/s/edgar/search — USDC
https://api.firstmention.uk/s/edgar/resolve — USDC
https://api.firstmention.uk/s/feednews/digest — USDC
https://api.firstmention.uk/s/funding-rates/funding — USDC
https://api.firstmention.uk/s/funding-rates/batch — USDC
https://api.firstmention.uk/s/funding-rates/rates — USDC
https://api.firstmention.uk/s/funding-rates/best — USDC
https://api.firstmention.uk/s/funding-rates/history — USDC
Showing the first 50 of 71 priced endpoints.
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xe029fcf4ba573f6fdc282208fe855df8cbb3ca9a on Base · basescan ↗
Listed by facilitators Coinbase CDP · 11
Observed on-chain inflow verified on-chain
Last 7d
$20.08
9 transfers · synced 2026-10-27
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the wallet. Inflow to a wallet, not proof that every transfer was a paid call.
How the last 30 days were settled
x402-settled: $0.00 (0%) · 0 transfers sent by a known x402 facilitator
Other: $20.00 plain transfers sent by the payer · $0.00 other contract calls. How we classify
Cross-check: Coinbase's Bazaar reports 4 calls in 30 days to this wallet across 4 listed resources; our ledger observed 9 transfers (0 facilitator-settled) over 15 of 30 scanned days. Different counters; neither is assumed correct.
Payment authenticity evidence confidence How we measure this →
single_payer_observed 2/5

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

Assessed window
30d
2 active of 7 observed
Inflow assessed
$20.04
5 transactions
Payer identities
available
2 evidence caveats
single_day_concentration — Most observed volume landed on a single day of the window.
Checks run: daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap, payer_uniqueness, payer_concentration, payer_recurrence, payer_payee_overlap. Derived from agent_revenue_daily, agents.payment_wallet, agent_payment_transactions. Measured 2026-10-27.
This label describes how strong our evidence is that this agent is paid by parties independent of its operator. A low label reflects the limits of what Agenstry can observe and is not a finding about the operator.
Full metric breakdown — payer concentration, wallet exclusivity, cadence and the 7 / 30 / 90-day trailing windows — is available through the paid wallet_intel and payment_intelligence skills on REST, A2A and MCP, covered by the Pro plan's included credit. API docs →
Agent cardhttps://api.firstmention.uk
Providerhttps://api.firstmention.uk
Docshttps://api.firstmention.uk
Discovered via
agentic_market recrawl_paid

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-26 12:11:25 404 — —

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Embed your Agenstry badge

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

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "_source": "agentic.market",
  "service": {
    "id": "api-firstmention-uk",
    "name": "api.firstmention.uk",
    "description": "",
    "domain": "api.firstmention.uk",
    "provider": "api.firstmention.uk",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://api.firstmention.uk/s/basedue/due",
        "description": "Base token due diligence over x402. /report bundles due diligence, cross-venue reference price and position exit cost in ONE $0.01 call. /price now takes up to 10 tokens per $0.01 call for bulk screening. Free /sample on every endpoint.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "tokens",
            "type": "string",
            "description": "",
            "example": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913,0x4200000000000000000000000000000000000006",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "basedue",
        "tags": [
          "base",
          "onchain",
          "token",
          "price",
          "batch"
        ],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/bizcal-api/day",
        "description": "Business-day and public-holiday API for US federal and GB bank holidays.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [],
        "serviceName": "bizcal-api",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "3"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/domain-intel/dns",
        "description": "Trust check for any domain in one call: DNS records, email auth (SPF/DMARC/DKIM), WHOIS registrar and age, plus live HTTP status and TLS certificate issuer/expiry and HSTS. Free /preflight sample and landing page.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "domain",
            "type": "string",
            "description": "",
            "example": "github.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "domain-intel",
        "tags": [
          "dns",
          "domain",
          "whois",
          "email-auth",
          "tls"
        ],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/funding-rates/funding",
        "description": "Perpetual-futures funding rates and annualized carry for BTC, ETH, SOL and more, from exchange public market-data APIs, in one call. Free /preflight sample.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "symbol",
            "type": "string",
            "description": "",
            "example": "BTC",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "funding-rates",
        "tags": [
          "funding",
          "crypto",
          "perp",
          "market-data",
          "rates"
        ],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/fundinglens/rates",
        "description": "Perpetual funding rates across 7 venues (Binance, Bybit, OKX, Bitget, Hyperliquid, dYdX, Deribit), normalized to 8h and annualized. Free /sample.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "symbols",
            "type": "string",
            "description": "",
            "example": "BTC,ETH,SOL",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "fundinglens",
        "tags": [
          "funding",
          "perpetuals",
          "base",
          "defi"
        ],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/txpreflight/verify",
        "description": "Base agent toolbox. /preflight simulates a tx (revert reason, gas, EIP-1559 fees in ETH and USD) before you sign. /verify reads a receipt and proves a USDC transfer settled: confirmations, amount, sender, recipient.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "amount_usd",
            "type": "number",
            "description": "",
            "example": 5,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "pay_to",
            "type": "string",
            "description": "",
            "example": "0xe029fcf4ba573f6fdc282208fe855df8cbb3ca9a",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "tx",
            "type": "string",
            "description": "",
            "example": "0x54002146b9c089ad89c91d1750b45d0c35e133caa5b0a536df8f57e9c2a4a74b",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "txpreflight",
        "tags": [
          "base",
          "usdc",
          "settlement",
          "x402",
          "gas"
        ],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "3"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/walletprofile/profile",
        "description": "Base wallet activity profile + heuristic risk score + exact-address OFAC SDN sanctions screen (US Treasury list, public data). /profile and /sanctions. Free /sample.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "address",
            "type": "string",
            "description": "",
            "example": "0x4200000000000000000000000000000000000006",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "range_blocks",
            "type": "number",
            "description": "",
            "example": 20000,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "walletprofile",
        "tags": [
          "base",
          "wallet",
          "sanctions",
          "ofac",
          "compliance"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/web-extract/extract",
        "description": "Extract clean readable text or markdown from any public web page: title, language, word/paragraph counts and the full article body. Free /preview sample first.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "format",
            "type": "string",
            "description": "",
            "example": "markdown",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://en.wikipedia.org/wiki/Base_(blockchain)",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "web-extract",
        "tags": [
          "extract",
          "scrape",
          "markdown",
          "article",
          "text"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/x402-preflight/check",
        "description": "Check any x402 endpoint before you pay it: /check reads its 402 challenge and validates scheme, network, asset, payTo, price and latency. /uptime returns accumulated reliability history; every checked URL is auto-monitored so history compounds. Free board at /monitored.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://api.exa.ai/search",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "x402-preflight",
        "tags": [
          "x402",
          "uptime",
          "reliability",
          "payments",
          "monitoring"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/x402check/check",
        "description": "Pre-flight check any x402 seller URL: fetches the 402 challenge, decodes the payment requirements (scheme, network, asset, price, payTo), flags missing discovery metadata and returns a clear verdict.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://api.firstmention.uk/s/bizcal-api/day?country=US",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "x402check",
        "tags": [
          "x402",
          "payments",
          "validator",
          "usdc",
          "developer"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://api.firstmention.uk/s/x402index/verdict",
        "description": "x402 market intelligence: search ~60k live x402 listings, compare competitor prices, vet an endpoint, and see which tags actually have repeat payers. Free /search, /market, /compare, /demand-map. Paid\u2026[53 more chars, already applied]",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://api.firstmention.uk/s/x402index/search",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "x402index",
        "tags": [
          "x402",
          "market-data",
          "discovery",
          "validation",
          "pricing"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.01",
      "maxAmount": "0.01",
      "avgCostPerTransaction": "0.01",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "",
    "tags": [
      "article",
      "base",
      "batch",
      "compliance",
      "crypto",
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