Praxa

Praxa

Praxa by Pipos Lab is an EU AI Act compliance tool that automatically logs high-risk AI decisions into a tamper-evident SHA-256 hash chain, producing auditor-ready evidence packs with 6-month retentio

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What is Praxa?

Praxa is an EU AI Act compliance tool built by Pipos Lab that automatically logs every decision made by a high-risk AI system. It wraps your existing model call (Vercel AI SDK, OpenAI, Anthropic, or LangChain) so that each input, score, rationale, and downstream action is recorded into a tamper-evident SHA-256 hash chain. The logs are retained for at least six months, meeting Article 12 requirements, and can be exported as auditor-ready evidence packs (Markdown or JSON) that remain verifiable without a Praxa account. Users deploy it to generate compliance records that regulators cannot backfill—the log must be written at the moment of the decision, not reconstructed later.

Application scenarios

  • Hiring and recruitment

    Log decisions from AI systems that screen or rank candidates, ensuring each scoring rationale is auditable.

  • Lending and credit scoring

    Record every loan approval or rejection decision, including input data and downstream actions, for regulator review.

  • Insurance underwriting

    Capture the AI’s risk assessment and policy pricing decisions with a forward-only hash chain.

  • Biometric identification

    Track each identification event (input, score, rationale) in high-risk systems used for surveillance or access control.

  • Education and admissions

    Log AI-driven student evaluation or admissions decisions to demonstrate compliance with Annex III obligations.

  • Access to essential services

    Record decisions affecting access to healthcare, utilities, or public benefits, keeping a six-month audit trail.

Core Features

  • Per-agent SHA-256 hash chain

    Each decision appends to a forward-only chain—any altered or deleted record breaks continuity and shows the break.

  • Automatic event logging

    Wraps the model call so every decision is logged the moment it happens, with no manual journaling required.

  • Auditor-ready evidence export

    Generate an EU AI Act Annex IV evidence pack on demand in Markdown or JSON format, verifiable without a Praxa account.

  • Six-month minimum retention

    Logs are kept for at least six months, with dated and ordered chains intact for the full period.

  • Multi-framework support

    Works with Vercel AI SDK, OpenAI, Anthropic, or LangChain—whatever powers the high-risk AI decision.

  • Tamper-evident verification

    Chain status shows “verified · 0 breaks” when intact; any break is immediately visible to auditors.

  • Deployer liability coverage

    The deployer stays liable even for AI systems bought from a vendor—Praxa provides the record from day one.

  • Architectural logging

    The log is written at decision time, so it cannot be backfilled—start it before the audit or you have nothing to show.

Target users

  • AI deployers who operate high-risk AI systems under Annex III (hiring, lending, insurance, biometrics, education, essential services) and need to meet Article 12 logging obligations by December 2, 2027.
  • Compliance officers responsible for generating and maintaining auditor-ready evidence packs for EU AI Act inspections.
  • Engineering teams integrating AI models (Vercel AI SDK, OpenAI, Anthropic, LangChain) who need a 3-line code change to add automatic, tamper-evident logging.
  • Vendors selling high-risk AI systems whose customers (deployers) remain liable—Praxa helps vendors provide compliant logging out of the box.

How to use Praxa?

  1. Install the SDK: Run npm i @piposlabs/praxa-vercel-ai to add the Praxa logging layer.
  2. Wrap your model call: Insert a 3-line change around the model call your high-risk AI already makes.
  3. Every decision is logged: Each input, score, rationale, and downstream action appends to the per-agent SHA-256 chain automatically.
  4. Export evidence: On demand, generate the EU AI Act Annex IV evidence pack in Markdown or JSON—auditors can verify chain continuity without a Praxa account.
  5. Monitor chain status: Check the chain status (“verified · 0 breaks”) to confirm no tampering has occurred.

Effect review

Praxa solves a specific, hard deadline problem: the EU AI Act’s Article 12 requires automatic, per-event logging that cannot be backfilled. The tool’s strength is its architectural approach—logging the decision at the moment it happens, not after the fact—and its tamper-evident SHA-256 chain makes falsification immediately visible. The 3-line SDK integration is pragmatic for teams already using Vercel AI SDK, OpenAI, Anthropic, or LangChain. However, the tool is narrowly scoped to logging; it does not handle other Article 12 requirements (like risk management documentation) or broader compliance workflows. For teams facing the December 2, 2027 deadline, Praxa offers a clean, auditor-ready logging layer that removes the risk of missing the six-month retention window.

Frequently Asked Questions

What is Praxa?
Praxa is an EU AI Act compliance tool by Pipos Lab that automatically logs high-risk AI decisions into a tamper-evident SHA-256 hash chain, producing auditor-ready evidence packs with 6-month retention.
How does Praxa ensure data integrity?
Praxa uses a SHA-256 hash chain to create tamper-evident logs, ensuring that any unauthorized changes to the records are detectable.
What kind of evidence does Praxa produce?
Praxa generates auditor-ready evidence packs that include logged AI decisions and their hash chain records, suitable for compliance audits.
How long does Praxa retain logs?
Praxa retains logs for 6 months, after which they are automatically deleted unless otherwise configured.
Is Praxa designed for all AI systems?
No, Praxa is specifically designed for high-risk AI systems as defined by the EU AI Act, helping organizations meet compliance requirements.

Praxa - AI Tool Detail

Praxa by Pipos Lab is an EU AI Act compliance tool that automatically logs high-risk AI decisions into a tamper-evident SHA-256 hash chain, producing auditor-ready evidence packs with 6-month retentio

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Visit Link：https://praxa.piposlab.com/

Tags：AI compliance、audit trail、risk logging、SHA-256、EU regulation