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fren get sandbox key

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changelog

What changed, when. Breaking changes are announced here first.

v0.1.0 · 5 november 2026

public sandbox

added

  • Public sandbox: self-serve signup at POST /api/sandbox/signup and nostro.ag/sandbox, isolated workspaces on a virtual ledger, 10 000 EUR of fake money, ready-made demo-agent, public counters at GET /api/sandbox/stats.
  • MCP server at https://mcp.nostro.ag/mcp (Streamable HTTP) with an agent profile (5 tools) and an admin profile (12 tools).
  • REST API: /v1/agent/* for agents, /api/* for admins.
  • Mandate engine: per-payment cap, daily and monthly limits, allowed MCC, blocked merchants, approval threshold, transfer rules.
  • Human approvals with single-decision locking, freeze, unfreeze, revoke, full audit log.
  • This documentation, in English and French, and llms.txt.

known limitations

  • Sandbox only: no real money, no live cards yet.
  • EUR only.
  • No idempotency keys on pay and send_transfer.
  • No key rotation endpoint (revoke and recreate), no webhooks for approvals yet.
  • Error and reason messages are in French.