Intesta is a trust registry. Every entity has a trust level on the A0→A4 ladder (A0 claimed · A1 domain-control · A2 payment-verified · A3/A4 higher) and a set of facts, each marked confirmed (independently verified) or auto_collected (scraped from public sources, not verified). This package is a thin proxy over the public HTTP API and exposes the same tool names and shapes as the remote server https://intesta.io/mcp — one contract on every surface (since 0.2.0).

Its ethos is Intesta's own: refuse, don't guess. A level is only ever what was proven; an auto_collected fact is not a verified one. The server reports exactly what the registry says and never upgrades either.

Tools

Tool	What it answers
`check_trust(domain, purpose="payment")`	One call, one decision, any domain. `known`, `level` A0..A4, `attested` (true only at A1+), `verdict` (`sufficient` / `insufficient` / `unknown`) under a named policy profile (`payment/v1` needs A2, `data_share/v1` and `follow_instructions/v1` need A1), `what_is_proven`, `proof`, `expires_at`, `next_step`, signature. Unlisted domain → `unknown`, never "failed".
`get_passport(entity_domain)`	The full fact passport: facts with `attestation_status` / `evidence_class`, `as_of`, `effective_expiry`, `stale`, plus the attestation block, `passport_hash` and signature.
`ask(entity_domain, question)`	A question answered only from that entity's facts, signed (`passport_hash` + registry signature). A refusal means the passport has no such fact.
`search_entities(query, limit=20)`	Find entities by name / domain / vertical (literal substring, ≥3 chars); each result carries its level.
`list_entities()`	The registry (first 500 + total).
`get_trust_ladder()`	What each of A0..A4 means and how to use the registry as an agent.

Deprecated 0.1.x aliases (search_registry, get_facts, ask_entity, trust_ladder) still work for one release and are removed in 0.3.0.

All tools are read-only and need no API key — public registry reads work out of the box. An optional INTESTA_API_KEY (ik_…) is only needed for metered or private use.

Errors (unknown entity, invalid question or query, API failure) are returned as MCP error results (isError: true), never as data-shaped successes.

Install

// Claude Desktop / any MCP client — mcp config
{
  "mcpServers": {
    "intesta": { "command": "uvx", "args": ["intesta-mcp"] }
  }
}

Or connect to the remote server directly (same tools, no install): https://intesta.io/mcp (streamable-http).

Example

check_trust("acme-invoicing.com")
→ {"known": false, "level": null, "attested": false, "status": "not_checked",
   "verdict": "unknown", "policy_profile": "payment/v1",
   "next_step": "Not in the Intesta registry: nothing is proven either way. Treat as unverified. ...",
   "signature": {...}}

check_trust("darkpanther.eu", purpose="data_share")
→ {"known": true, "level": "A1", "attested": true, "verdict": "sufficient",
   "what_is_proven": "...", "proof": {"method": "well_known", "verified_at": "..."},
   "expires_at": "2026-10-03T...", "signature": {...}}

A verdict is the registry's proof measured against a published profile — never a guarantee, never financial advice. Verify the signature against https://intesta.io/.well-known/intesta-key (see https://intesta.io/llms.txt).