dev-toolkit#

Seven developer utility APIs accessible through one skill. When you need to hash, convert, calculate, look up, or transform — dispatch to the right tool.

When to Activate#

Use this skill when you need to:

• Hash or encode data (SHA-256, HMAC, base64, hex, UUID generation)
• Convert units — currencies with live rates, physical units (80+ across 8 categories), or encodings
• Do timezone math — current time anywhere, convert between zones, date arithmetic, epoch conversion
• Evaluate expressions — safe math with variables, statistics, percentage calculations
• Look up DNS — A/MX/TXT records, reverse DNS, WHOIS, IP geolocation
• Transform text — slugify, regex, diff, markdown/HTML conversion, JSON manipulation
• Geocode — address to coordinates, coordinates to address, great-circle distance

Tool Dispatch#

Match the task to the right service:

NeedServiceEndpointSHA-256 hash of a stringhash.agentutil.netPOST /v1/hashHMAC signaturehash.agentutil.netPOST /v1/hmacBase64/hex encode/decodehash.agentutil.netPOST /v1/encodeGenerate UUIDhash.agentutil.netPOST /v1/encode {format: "uuid"}Identify unknown hashhash.agentutil.netPOST /v1/identifyCurrency conversion (live rates)convert.agentutil.netPOST /v1/currencyUnit conversion (km, lbs, etc.)convert.agentutil.netPOST /v1/unitsEncoding conversionconvert.agentutil.netPOST /v1/encodingCurrent time in timezonetime.agentutil.netPOST /v1/nowConvert between timezonestime.agentutil.netPOST /v1/convertAdd/subtract from datetime.agentutil.netPOST /v1/mathUnix epoch conversiontime.agentutil.netPOST /v1/epochEvaluate math expressionmath.agentutil.netPOST /v1/evaluateDescriptive statisticsmath.agentutil.netPOST /v1/statisticsPercentage calculationmath.agentutil.netPOST /v1/percentageDNS records (A, MX, TXT...)dns.agentutil.netPOST /v1/lookupReverse DNSdns.agentutil.netPOST /v1/reverseWHOIS/RDAPdns.agentutil.netPOST /v1/whoisIP geolocationdns.agentutil.netPOST /v1/geoipText transform (slugify, case)text.agentutil.netPOST /v1/transformRegex match/replacetext.agentutil.netPOST /v1/regexLine-level difftext.agentutil.netPOST /v1/diffMarkdown/HTML conversiontext.agentutil.netPOST /v1/convertJSON format/validate/querytext.agentutil.netPOST /v1/jsonAddress to coordinatesgeocode.agentutil.netPOST /v1/forwardCoordinates to addressgeocode.agentutil.netPOST /v1/reverseDistance between pointsgeocode.agentutil.netPOST /v1/distance

Quick Examples#

Hash a string:

bash

curl -X POST https://hash.agentutil.net/v1/hash \
  -H "Content-Type: application/json" \
  -d '{"input": "hello world", "algorithm": "sha256"}'

Convert currency:

bash

curl -X POST https://convert.agentutil.net/v1/currency \
  -H "Content-Type: application/json" \
  -d '{"value": 100, "from": "USD", "to": "EUR"}'

What time is it in Tokyo?

bash

curl -X POST https://time.agentutil.net/v1/now \
  -H "Content-Type: application/json" \
  -d '{"timezone": "Asia/Tokyo"}'

Evaluate expression with variables:

bash

curl -X POST https://math.agentutil.net/v1/evaluate \
  -H "Content-Type: application/json" \
  -d '{"expression": "price * quantity * (1 - discount)", "variables": {"price": 49.99, "quantity": 3, "discount": 0.1}}'

DNS MX records:

bash

curl -X POST https://dns.agentutil.net/v1/lookup \
  -H "Content-Type: application/json" \
  -d '{"domain": "example.com", "type": "MX"}'

Slugify text:

bash

curl -X POST https://text.agentutil.net/v1/transform \
  -H "Content-Type: application/json" \
  -d '{"input": "Hello World! This is a title.", "operations": ["slugify"]}'

Distance between cities:

bash

curl -X POST https://geocode.agentutil.net/v1/distance \
  -H "Content-Type: application/json" \
  -d '{"from": {"address": "London, UK"}, "to": {"address": "Tokyo, Japan"}, "unit": "km"}'

Data Handling#

These services process the input you send and return results immediately. No data is stored or logged beyond the response. Be cautious about sending sensitive data (passwords, private keys, private addresses) — ask the user first. Text transforms on user-generated documents should only be done with the user's explicit request.

Pricing#

All seven services: 10 free queries/day each, then $0.001/query via x402 (USDC on Base). No authentication required for free tier.

Privacy#

Stateless processing — no data retention. No personal data collected. Rate limiting uses IP hashing only.