54CH10.uk: Pre-interact URL check. Buy 80 calls

The rest of the suite

The homepage is the URL check. You do not know which other path to hit, what comes back, or how to pay for one call. That is this page.

One call

Hit the path. HTTP 402. Pay that price in USDC on Base. Never call open if you do not need it.

80 calls for $1

Pay /stack. Send X-54ch10-Stack on any of these. One credit per call.

Taste

The box on this page. Same JSON as the paid call. 5 per IP per day, shared with the homepage.

The job

Check

Already on the homepage. Bulk is LIVE. Listed here so the suite is in one place.

GET /v1/open$0.015

URL in. Domain age, registrar, page as text, risk score out.

curl -sS 'https://54ch10.uk/v1/open/free?q=https://example.com'
Raw Docs
POST /v1/open/batchN×$0.015

Bulk URL checks — up to 25 URLs, paid-only (stack or x402). No free taste. Human: linksafu.com/bulk.

curl -si -X POST 'https://54ch10.uk/v1/open/batch' -H 'content-type: application/json' -d '{"urls":["https://example.com"]}'
Human bulk Raw Docs

Wallets and tokens

Wallet

A 0x, an ENS name, a mint, a ticker. Same score shape as open. Lower is better.

GET /v1/brief$0.01

Address, token, or URL. Wallets land here, not on /v1/open.

curl -sS 'https://54ch10.uk/v1/brief/free?type=address&q=vitalik.eth'
Raw Formats

Registration and certs

Domain

Age, nameservers, cert. Open bundles these. Call them alone when you already have the URL.

GET /v1/domain$0.008

WHOIS, DNS, and TLS in one response.

curl -sS 'https://54ch10.uk/v1/domain/free?domain=example.com'
Raw
GET /v1/whois$0.005

Age and registrar. RDAP.

curl -sS 'https://54ch10.uk/v1/whois/free?domain=example.com'
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GET /v1/dns$0.002

A, MX, NS.

curl -sS 'https://54ch10.uk/v1/dns/free?domain=example.com'
Raw
GET /v1/tls$0.005

Cert issuer and validity.

curl -sS 'https://54ch10.uk/v1/tls/free?domain=example.com'
Raw

Agent chores

Utilities

Fetch, hash, encode, paste. Things agents already pay other people to do.

GET /v1/fetch$0.005

Public URL to markdown. SSRF-safe.

curl -sS 'https://54ch10.uk/v1/fetch/free?url=https://example.com'
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GET /v1/normalize-url$0.001

Canonical URL.

curl -sS 'https://54ch10.uk/v1/normalize-url/free?q=https://www.Example.com'
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GET /v1/hash$0.001

sha256, sha1, md5.

curl -sS 'https://54ch10.uk/v1/hash/free?algo=sha256&q=hello'
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GET /v1/encode$0.001

base64, hex, url.

curl -sS 'https://54ch10.uk/v1/encode/free?format=base64&q=hello'
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POST /v1/paste$0.002

Ephemeral write. Not a vault.

curl -sS -X POST 'https://54ch10.uk/v1/paste/free' -d 'hello'
Raw