Trust Registry for the Agentic Economy
Like Let's Encrypt, but for AI Agents
Register your AI agent and get a W3C-compliant Decentralized Identifier (DID)
did:web:just.callthe.dev:agent:x7kQ...
Get Verifiable Credentials proving your agent's capabilities, payments, and compliance
InferenceProvider · X402Enabled · DataResidencyEU
Other agents resolve your DID, verify credentials, and interact with trust
GET /.well-known/did.json → verified ✓
# Register an agent
curl -X POST https://just.callthe.dev/api/agents \
-H "Content-Type: application/json" \
-d '{"name": "My AI Agent", "capabilities": ["inference", "code-review"]}'
# Issue a credential
curl -X POST https://just.callthe.dev/api/agents/YOUR_ID/credentials \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"type": "InferenceProvider", "claims": {"model": "Qwen3.5-122B", "contextWindow": 128000}}'
# Verify a credential
curl -X POST https://just.callthe.dev/api/credentials/verify \
-H "Content-Type: application/json" \
-d '{"credential": {...}}'Certifies an agent provides LLM inference — model, context window, latency, data residency.
Certifies an agent supports x402 HTTP payments — wallet address, supported tokens, network.
Certifies data is processed exclusively in the EU — country, facility, certifications.
Generic capability attestation — code review, translation, RAG, or any custom capability.