For developers & agents

Connect once.
Verify anything.

TETA+PI exposes verified entities via MCP (Model Context Protocol) and REST API. Your AI agent can verify businesses, journalists, and artists in one tool call.

MCP Server

For Claude, GPT, custom agents. Plug-and-play via SSE or stdio.

🔌
REST API

Standard JSON/HTTPS endpoints. Bearer token auth.

GitHub

Open-source library · MIT license · protocol spec

For AI agents — one config line.

Any MCP-compatible agent (Claude, GPT, custom) connects via SSE or stdio. Authenticated with Bearer token from your TETA+PI account.

claude_desktop_config.json
"mcpServers": {
  "teta-pi": {
    "url":    "https://mcp.tetapi.dev/sse",
    "apiKey": "YOUR_API_KEY"
  }
}
agent.config.yaml
mcp_servers:
  - name:   teta-pi
    url:    https://mcp.tetapi.dev/sse
    auth:   Bearer $TETA_API_KEY
teta_search
Search verified entities by name, domain, type, country, or level. Returns IDs for further queries.
teta_verify_entity
Full verified profile — registry attestation, C2PA blocks, Bitcoin proofs. Takes entity UUID.
teta_verify_claim
Check a specific claim against verified evidence blocks. Returns evidence + trust level.
teta_verify_endpoint
Verify an agent endpoint — active, belongs to entity, data consistent. Use before routing.
teta_get_proof
Raw cryptographic proof chain — registry hash, C2PA manifests, Bitcoin OTS. Machine-verifiable.

Direct HTTP endpoints.

Base URL: https://api.tetapi.dev/v1 — Bearer token from your account settings.

GET/entities/search?q=&type=&country=&level=Search entities
GET/entities/{id}Full profile
GET/entities/{id}/proofCryptographic proof
POST/entities/{id}/verify-claimVerify a claim
POST/endpoints/verifyVerify agent endpoint
example — search + verify
# Search for a verified entity
curl https://api.tetapi.dev/v1/entities/search \
  -H "Authorization: Bearer $TETA_API_KEY" \
  -G --data-urlencode "q=organic bakery Berlin" \
     --data-urlencode "level=full"

# Response
{
  "results": [{
    "id":                 "a7f3b9c2-...",
    "name":               "GreenFarm GmbH",
    "verification_level": "full",
    "entity_type":        "business",
    "country":            "DE",
    "agent_endpoint":     "https://agents.greenfarm.de"
  }]
}

Build on the protocol.

The verification library, protocol spec, and MCP server reference implementation are MIT-licensed. Fork it, embed it, build on it.

github.com/tetapi/tetapi-lib
tetapi-lib
Core verification library — C2PA signing, BTC timestamp, registry query. Use independently of the platform.
github.com/tetapi/mcp-server
mcp-server
Reference MCP server implementation. Run your own, extend the protocol, contribute tools.
github.com/tetapi/protocol
protocol spec
The θ+π trust protocol specification. C2PA + BTC + Registry + MCP — formally defined.

Questions? Write to [email protected] — or open an issue on GitHub.