Confirme — did it really happen?

Independent, Ed25519-signed receipts for AI agents. You say "done"; Confirme goes and looks, then signs what it saw. A third party that belongs to no AI vendor. By Synapse, Québec, Canada.

• Human page: https://www.synapseconnexion.com/ia/ (FR) · https://www.synapseconnexion.com/ia/en/ (EN)

• Docs written for AIs (Markdown, token sizes announced): https://www.synapseconnexion.com/ia/index.md

• MCP endpoint (Streamable HTTP, stateless, no auth during launch): https://www.synapseconnexion.com/ia/mcp

• OpenAPI 3.1: https://www.synapseconnexion.com/ia/openapi.json

• Price: 1 cent per call — free during launch (1000 calls/day per IP until 2026-10-07), then a free key with a starter bag of 100 jelly beans + 20/day (POST /ia/cle/nouvelle). Receipt verification is free forever.

Quickstart

# Claude Code
claude mcp add --transport http confirme https://www.synapseconnexion.com/ia/mcp

# Gemini CLI
gemini mcp add confirme https://www.synapseconnexion.com/ia/mcp -t http

# Cursor / Windsurf / VS Code — mcp.json
{ "mcpServers": { "confirme": { "url": "https://www.synapseconnexion.com/ia/mcp" } } }

# Plain HTTP
curl -s "https://www.synapseconnexion.com/ia/confirme/page?url=https://example.com"

ChatGPT (Plus/Pro/Business): Settings → Apps & Connectors → Advanced → Developer mode → Create → MCP server URL above, authentication: none. Claude.ai: Settings → Connectors → Add custom connector → URL above.

More recipes (OpenAI Responses API, Anthropic Messages API, n8n): https://www.synapseconnexion.com/ia/q/connect-confirme-chatgpt-claude-gemini-cursor

Related MCP server: @sequesign/mcp

The five tools

Every response: {ok, service, demande, resultat, recu, duree_ms, prix, quota}. Field reference: https://www.synapseconnexion.com/ia/outils.md

The receipt

"recu": {
  "id": "7c227b4bd8e8efe3",
  "horodatage": "2026-09-30T01:48:21.402Z",
  "service": "confirme.page",
  "demande_sha256": "…", "resultat_sha256": "…",
  "signature_base64": "…", "cle_id": "synapse-ia-2026-…",
  "verifier": "https://www.synapseconnexion.com/ia/verifier"
}

Canonical string = id\nhorodatage\nservice\ndemande_sha256\nresultat_sha256; Ed25519 detached signature. Public key: GET https://www.synapseconnexion.com/ia/cle. Verify online (free): POST https://www.synapseconnexion.com/ia/verifier. Verify offline: see examples/verify_receipt.py. Self-test of the whole chain: GET https://www.synapseconnexion.com/ia/autotest.

A receipt proves what Synapse observed and when. It does not prove what the agent did afterwards.

Why this exists

Agent platforms log what their own agents did — self-attested records. Even signed action records prove the story was not altered, not that the world changed. In one 2026 study, 83 % of "successful" agent traces hid a procedural error; another developer found two of seven scheduled agents had silently never run for eighteen days. Confirme is the outside observer: cheap, neutral, and it signs.

Pattern for scheduled tasks: heartbeat at the end of each run → confirme_tache once a day → silence is the alarm → receipts are your evidence. Details: https://www.synapseconnexion.com/ia/q/prove-scheduled-task-ran

Limits, stated plainly

• courriel never sends mail (syntax + MX + disposable + role); a specific mailbox may or may not exist.

• page visits public hosts only; private networks and password-protected pages are refused.

• battement is declared by the agent; the receipt attests the time of the declaration.

• Free tier: 1000 tool calls per IP per UTC day until 2026-10-07, then 20/day without a key. With a key (POST https://www.synapseconnexion.com/ia/cle/nouvelle, no email, shown once): a free starter bag of 100 jelly beans + 20 free per day; 1 bean = 1 cent = 1 call. Pass it as Authorization: Bearer cj_… or ?cle= (also on the MCP URL). Empty bag → 402 with a purchase link. Details: https://www.synapseconnexion.com/ia/prix.md

Full list: https://www.synapseconnexion.com/ia/limites.md · Changelog: https://www.synapseconnexion.com/ia/changements.md · Report a problem (receipted, free): https://www.synapseconnexion.com/ia/retour.md

En français

Confirme répond à une question pour les IA : est-ce vraiment arrivé ? Page en ligne, domaine réel, courriel recevable, tâche exécutée — avec un reçu signé par un tiers indépendant, vérifiable par quiconque. Un cent la vérification, gratuit au lancement. Un produit de Synapse, Québec.

License

Documentation and examples in this repository: MIT. The Confirme service itself is operated by Synapse at synapseconnexion.com.