Skip to main content
NexoraLaunch home

Build log live

Levee vs signafAIde

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Levee compared with signafAIde
DetailLevee logo LeveesignafAIde logo signafAIde
What it doesAuthorization layer for AI agent spend with human-approved mandates and tamper-evident proof Tamper-evident audit trail for AI agents with verifiable records
StageStartup Not given
Founded2026 Not given
Based inNot given GB
Pricing modelFree trial Freemium
PricingFree 12 week pilot for card issuing platforms Free: £0, no card required, 1 user, 25,000 live records a month. Solo: £19/month or £190/year, 1 user, 100,000 live records a month (then £5 per 100,000). Team: £49/month or £490/year, unlimited users with roles, 250,000 live records a month (then £5 per 100,000, or £3 above 10 million). Enterprise:
Key features
  • Passkey-signed spend mandates with purpose, budget, merchants, and time windows
  • Real-time authorization decisions with sub-1 second response time at p99
  • Human challenge via passkey step-up for exceptional spend
  • Fail-closed payment processing if no decision arrives in time
  • Hash-chained evidence ledger with tamper-evident records
  • Exportable evidence packs for chargebacks and audits
  • Supports card, wallet, x402 and stablecoin payment rails
  • Agent signs each record with its own Ed25519 key
  • Service co-signs records and chains them to prevent edits or gaps
  • Public timestamp bounds each record with hourly verification
  • Only salted hashes sent to service; inputs and outputs stay on your machine
  • Open verifier code allows independent verification
  • Python and TypeScript SDKs for wrapping agent tools
  • Verification reports in HTML or PDF format with compliance mapping
  • Compliance packs for EU AI Act, ISO/IEC 42001 and SOC 2
  • 99.5% uptime guarantee on hosted witness in Google Cloud London
What makes it different
  • Human-approved mandates enforce intent, not just static limits or merchant category blocks
  • Operates outside the agent in the issuer's authorization path, preventing agent bypass or override
  • Creates tamper-evident audit trail linked to agent identity, run, and policy version
  • Never holds funds or issues cards; integrates with existing issuer infrastructure
  • Single mandate and policy core across multiple payment rails and issuers
  • Records are verifiable offline and survive service shutdown
  • Independent co-signature and public time bounds provide proof beyond your control
  • Content remains private on your machine in hash-only mode
  • Compliance-ready evidence for regulators and auditors
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)00
Referring domains (Majestic)00

5 details filled in for both companies.

More alternatives to Levee More alternatives to signafAIde

Ask a question