# Zanqira — Agent authentication

This page describes how AI agents and automated clients can authenticate with Zanqira services.

## Resources

| Resource | URL |
|----------|-----|
| Platform (authenticated API) | https://www.zanqira.us/ |
| API catalog (RFC 9727) | https://www.zanqira.us/.well-known/api-catalog |
| OAuth authorization server metadata | https://www.zanqira.us/.well-known/oauth-authorization-server |
| OpenID Provider metadata | https://www.zanqira.us/.well-known/openid-configuration |
| Protected resource metadata | https://www.zanqira.us/.well-known/oauth-protected-resource |
| MCP server card | https://www.zanqira.us/.well-known/mcp/server-card.json |
| Agent skills index | https://www.zanqira.us/.well-known/agent-skills/index.json |
| Human registration | https://www.zanqira.us/register.html |
| Subscribe / Pro checkout | https://www.zanqira.us/pay/ |
| Agent subscribe playbook | https://www.zanqira.us/pay.md |
| Agent payments catalog | https://www.zanqira.us/.well-known/agent-payments.json |
| Agent card | https://www.zanqira.us/.well-known/agent.json |
| ai.txt | https://www.zanqira.us/ai.txt |
| llms.txt | https://www.zanqira.us/llms.txt |
| Documentation | https://www.zanqira.us/docs.html |
| Public website | https://www.zanqira.us/ |

## Human sign-in

Users register at https://www.zanqira.us/register.html and sign in at https://www.zanqira.us/ using email/password, Google, or Apple.

## API access

After authentication, the platform issues a session cookie for browser clients. Programmatic clients should use API keys configured in the product (Settings → API keys) or OAuth tokens where supported.

Interactive API documentation: https://www.zanqira.us/apidocs

## Agent registration

Automated agents should discover capabilities via `/.well-known/api-catalog` and `/.well-known/mcp/server-card.json` on this domain, then authenticate against the platform issuer `https://www.zanqira.us` using the metadata at `/.well-known/oauth-authorization-server`.

## Paying for Pro (agents)

If access is gated (HTTP 403 + `subscribe_url`), agents should purchase Pro for the workspace email:

1. Preferred: crypto API — see https://www.zanqira.us/pay.md and https://www.zanqira.us/.well-known/agent-payments.json
2. Assisted: open https://www.zanqira.us/pay/?email={account_email} for Paddle card checkout

For partnership or enterprise agent access, contact ceo@zanqira.us.