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APEX PSI

Registre officiel Sécurité

Append-only evidence receipts for AI records: seal, verify, cite, chain-check, anchor status.

Code source Documentation

Que pouvez-vous faire avec APEX PSI ?

  • It does not store your content. Only the hash leaves your machine.
  • It does not certify, grade, score or approve anything.
  • It exposes no edit or delete path: the interface this server uses is write-once sealing plus
  • It is not a legal opinion, and no court has agreed to accept a receipt in advance.

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

NPM package apex-psi-mcp
Claude Code 
claude mcp add apex-psi -e 'APEX_API_BASE=<APEX_API_BASE>' -e 'APEX_API_KEY=<your apex_api_key>' -- npx -y apex-psi-mcp@1.1.2
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "apex-psi": {
            "command": "npx",
            "args": [
                "-y",
                "apex-psi-mcp@1.1.2"
            ],
            "env": {
                "APEX_API_BASE": "<APEX_API_BASE>",
                "APEX_API_KEY": "<your apex_api_key>"
            }
        }
    }
}

Variables d'environnement

  • APEX_API_BASE Optional API base URL override. Default: https://qhtntebpcribjiwrdtdd.supabase.co/functions/v1 (the public APEX PSI notary). Free allowance with no key: 20 operations/minute, 100/day.
  • APEX_API_KEY secret Optional API key. It raises the daily ceiling for a workload; it is never required to seal or to verify, and it cannot change what a receipt is allowed to claim.

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. APEX PSI MCP server
  2. Tools
  3. Install
  4. Prove it works in two minutes
  5. Limits, stated plainly
  6. Configuration
  7. What this server does not do
  8. Links
  9. License

APEX PSI MCP server

Apex PSI is not a tool and not a product. It is the verification substrate — the layer beneath proof. It does not judge. It does not certify. It only remembers. This server is one application built on that layer.

One config line gives any MCP-capable agent (Claude, Cursor, Qoder, Cline, Windsurf, and the rest) five evidence tools: seal, verify, anchor, cite, verify_chain.

A seal records the SHA-256 hash of a decision, document or artefact in a public append-only ledger and returns a receipt. Anyone can look that hash up again — free, forever, with no account, no key and no cooperation from us.

What a receipt proves: that this exact content existed at this timestamp, and has not changed since. What it never proves: that the content is true. A seal is an audit trail, not a verdict.

Tools

ToolWhat it actually does
sealWrites the record's SHA-256 hash to the ledger and returns a receipt carrying an Ed25519 signature over the Merkle leaf, an ML-DSA-65 post-quantum signature, and — when a slot is available — an LMS-W4-SHA256 signature. The receipt's own algorithm field states which of those it got.
verifyLooks a hash (or a whole receipt) up in the ledger and reports whether it is present and unchanged. Integrity, not truth.
anchorReads the Bitcoin/OpenTimestamps anchoring state of the ledger's pending Merkle roots. Pass action: "anchor" explicitly to request that pending roots be submitted — an anchor is confirmed only when a real block is found.
citeTurns a receipt into a citation (APA, BibTeX, MLA) that points at a public, independently checkable record.
verify_chainRecomputes each hash's presence and Merkle continuity across a chain of receipts. A recomputation result, not an opinion.

Install

Add to your MCP client config:

{
  "mcpServers": {
    "apex-psi": {
      "command": "npx",
      "args": ["-y", "apex-psi-mcp"]
    }
  }
}

Or locally: npm install apex-psi-mcp.

Prove it works in two minutes

  1. Ask the agent: "Seal the sentence 'hello psi' with APEX PSI."
  2. Take the decision_hash from the receipt and paste it into the public verifier: https://www.ai-governance-standard.com/verify

If the site returns the record, the seal is real. You never had to trust this server, our npm package, or our word — which is the entire point of the protocol.

Limits, stated plainly

Free use needs no account and no key: 20 operations per minute and 100 per day, enforced per server instance — a flood guard rather than a subscription quota. Above that, an API key raises the ceiling; capacity is priced, the finding never is. Verification itself is unlimited and free: running the verifier locally costs nothing at all — apex-psi-verifier on npm, psi-verifier on PyPI.

Configuration

Environment variables (both optional):

  • APEX_API_BASE — override the notary endpoint. Default: https://qhtntebpcribjiwrdtdd.supabase.co/functions/v1
  • APEX_API_KEY — raises the daily ceiling for a workload. Never required to seal or verify.

What this server does not do

  • It does not store your content. Only the hash leaves your machine.
  • It does not certify, grade, score or approve anything.
  • It exposes no edit or delete path: the interface this server uses is write-once sealing plus read-only lookup. The check that matters is yours to run — re-verify any receipt at any time, and any change shows up as a failed lookup.
  • It is not a legal opinion, and no court has agreed to accept a receipt in advance.

License

MIT

Questions fréquentes

Qu'est-ce que APEX PSI ?

Append-only evidence receipts for AI records: seal, verify, cite, chain-check, anchor status.

Comment installer APEX PSI ?

Il s'exécute sur votre machine. Dans Claude Code : claude mcp add apex-psi -e 'APEX_API_BASE=<APEX_API_BASE>' -e 'APEX_API_KEY=<your apex_api_key>' -- npx -y apex-psi-mcp@1.1.2. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour APEX PSI ?

Oui. Il attend APEX_API_KEY, à renseigner dans sa configuration.

APEX PSI est-il open source ?

Son code est public sur GitHub, mais le dépôt ne déclare pas de licence standard.

Qui maintient APEX PSI ?

Il est publié par kawal393. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.