Tools directory

Every cent-ai tool, grouped by category. Every tool listed here is live today — nothing on this page is a planned or upcoming feature.

Data formatting

Format, validate, and transform structured data formats.

data formatting

JSON Formatter and Validator

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Format, validate, and sort JSON with clear syntax errors, live preview, and one-click copy or download.

  • format
  • validate
  • sort-keys
  • live-preview
data formatting

YAML Formatter and Validator

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Format, validate, and sort a single YAML document with clear parse errors and live preview.

  • format
  • validate
  • sort-keys
  • live-preview

Encoding

Encode and decode common text representations.

encoding

Base64 Encoder and Decoder

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Encode text to Base64 or decode it back, with an optional batch mode for multiple values.

  • encode
  • decode
  • batch
  • live-preview

Security

Inspect tokens and generate digests, processed only by cent-ai's API and never forwarded to external services.

security

JWT Decoder

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Decode a JWT's header and payload to read its claims. Does not verify the signature.

  • decode
  • live-preview
security

Hash Generator

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Generate an MD5, SHA-1, SHA-256, or SHA-512 hex digest of text input.

  • md5
  • sha1
  • sha256
  • sha512
  • live-preview
security

TLS/Certificate Inspector

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Connect to a host over TLS and report its certificate's subject, issuer, validity, and trust status.

  • fetch-certificate
  • trust-check
security

Certificate Decoder

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Decode a PEM-encoded X.509 certificate's subject, issuer, validity, SANs, and public key details.

  • decode
  • live-preview
security

HMAC Generator

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Generate an HMAC-MD5, HMAC-SHA1, HMAC-SHA256, or HMAC-SHA512 digest of text input using a secret key.

  • md5
  • sha1
  • sha256
  • sha512
  • live-preview
security

CSR Decoder

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Decode a PEM-encoded PKCS#10 certificate signing request's subject, public key, and requested SANs.

  • decode
  • live-preview
security

HTTP Security Headers Checker

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Check a domain's HSTS, CSP, and other security-relevant HTTP response headers, with findings and remediation guidance.

  • hsts
  • csp
  • frame-protection
  • findings
security

SSL/TLS Domain Checker

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Check a domain's TLS certificate health: trust, expiry, hostname match, chain, and negotiated protocol/cipher.

  • trust-check
  • expiry
  • hostname-match
  • chain
  • cipher
  • findings
security

Certificate Analyzer

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Analyze a pasted PEM certificate's fields, extensions, and expiry, with clear findings and remediation guidance.

  • analyze
  • expiry
  • findings
security

Certificate Chain Validator

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Validate a live host's certificate chain: ordering, missing intermediates, expired links, and basic constraints.

  • chain-validation
  • findings
security

Certificate Expiry Checker

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Check certificate expiry from a live domain or a pasted/uploaded PEM certificate, with clear severity levels.

  • expiry
  • findings
security

Secret Scanner

Processing: Browser. Processed entirely in your browser — this input never leaves your device.

Scan text for likely secrets — cloud/API tokens, private keys, database URLs — entirely in your browser by default.

  • pattern-detection
  • contextual-detection
  • entropy-detection
  • redaction
  • findings
security

.env Security Scanner

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Scan .env-style configuration for exposed secrets, publicly-shipped credentials, weak defaults, and risky settings — paste content directly, or check a live URL.

  • pattern-detection
  • contextual-detection
  • entropy-detection
  • config-risk-checks
  • findings

Networking

Work out addressing and subnetting for infrastructure you manage.

networking

CIDR / Subnet Calculator

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Calculate network address, broadcast address, netmask, and usable host range from IPv4 CIDR notation.

  • subnet-math
  • live-preview
networking

DNS Lookup

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Look up A, AAAA, CNAME, MX, TXT, and NS records for a hostname.

  • a-record
  • aaaa-record
  • cname-record
  • mx-record
  • txt-record
  • ns-record
networking

IP Lookup

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Classify an IPv4 or IPv6 address (public, private, loopback, link-local) and look up its reverse DNS.

  • classify
  • reverse-dns
networking

HTTP Header Inspector

Processing: API. Processed by cent-ai's API: sent to our server, held in memory, never stored.

Fetch a URL's status code and response headers, following redirects and reporting the redirect chain.

  • fetch-headers
  • follow-redirects
  • live-preview