Developer toolLive

Skill and Card Writer

Describe your agent in plain words. Get a card that passes the validator.

Describe your agent

Agent nameWhat callers will see.

PurposeOne sentence: what it does and for whom.

SkillsTwo to five lines, each "verb noun: what it does".

Data it touchesComma separated.

Who may call itAgents or teams, comma separated.

3 free runs, no sign-up

Give the agent a name, one sentence on what it is for, two to five skills as "verb noun: what it does", the data it touches and who may call it. The writer returns an A2A card with skill descriptions that say when to use each skill and when not to, a security scheme applied per skill, and a permission block: the credential attributes a badge for this agent would carry.

Most cards are written once and never read again. This one is written to be checked: press "Validate this card" and the validator runs on the output in the same page.

Everything runs in your browser. We store nothing from your input except an anonymised event: which tool ran and when.

What it checks

CardA2A shape with interfaces, capabilities, modes and skills
Skill descriptionspass the linter rules for length, when and when not
Securityone bearer scheme, a scope per skill
Permission blockallowed skills, counterparties, limits, data classes, human review

Sample input

{
  "agentName": "Supplier Onboarding Agent",
  "purpose": "Collects supplier details, checks them against the vendor master and opens an onboarding request",
  "skills": "read supplier_form: reads the supplier registration form and attachments\ncheck vendor_master: looks up existing suppliers by tax number and bank details\ncreate onboarding_request: opens an onboarding request for procurement to approve",
  "data": "supplier contact details, tax numbers, bank details",
  "callers": "procurement-desk agent, accounts-payable agent"
}