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Port of Context vs signafAIde

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

Port of Context compared with signafAIde
DetailPort of Context logo Port of ContextsignafAIde logo signafAIde
What it doesContext layer platform for regulated industries Tamper-evident audit trail for AI agents with verifiable records
StageNot given Not given
FoundedNot given Not given
Based inNot given GB
Pricing modelFreemium Freemium
PricingFree: $0, includes up to 5 members, 100 context nodes, and 100 MB of indexed content. Team: $25 per seat per month (or $200 per seat billed annually), includes up to 25 members, 1,000 context nodes, and 1 GB of indexed content. Enterprise: custom pricing, includes Forward Deployed Engineers, Hybrid 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
  • Model-agnostic: runs on Claude, GPT, Gemini, or open-weight models
  • Full observability: trace every tool call, retrieval, and reasoning step
  • Isolated execution: tool calls run in isolated environments by default
  • Code mode: reduces token usage to one-third of traditional approaches
  • Self-hosted on your infrastructure: cloud, on-prem, or air-gapped
  • MCP server integration: works with existing MCP servers unchanged
  • Open source under MIT license
  • Automatic model failover and switching
  • 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
  • Isolated by default with no direct system access
  • Reduces token usage to approximately one-third
  • Runs end-to-end air-gapped with no external network calls
  • Full transparency through open agent-observability spec (AVP)
  • No vendor lock-in: switch models without rewriting agents
  • 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)38 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)140
Citation Flow (Majestic)280
Referring domains (Majestic)1020

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