mercator-entity-evidence

Company enrichment where the answer carries its own evidence. The point is not the value — plenty of APIs return a legal name. The point is that you can see where it came from and decide whether to believe it.

Who pays, and from which wallet

Your wallet, not ours and not the platform's. This skill carries no wallet, custodies nothing and never asks for a private key. It describes a paid HTTP endpoint; your agent pays for the call the way it pays for any other x402 resource — an x402 skill holding a funded key, a bounded agent wallet, or an X-PAYMENT header you pre-sign yourself. With no x402 signer configured the free preflight still works and the paid route keeps returning 402.

An unresolvable company is STILL CHARGED FOR — a defect measured 2026-09-30, not a policy, with a fix in progress. It affects only the two no-evidence cases (UNRESOLVED, INSUFFICIENT_EVIDENCE); every other call is charged once at the listed price. Read the X-MERCATOR-Charged header for what actually moved. This text is dated: if it still says a fix is in progress after 2026-10-14, the fix has stalled and this sentence is the stale one.

The shape of the call

BASE="${MERCATOR_BASE_URL:-https://mercator-entity-evidence.fly.dev}"

# Free preflight — which fields will be attempted, and the price if you buy.
curl -sS -X POST "$BASE/v1/entity-evidence/validate" \
  -H 'content-type: application/json' \
  -d '{"domain":"lido.fi","fields":["legal_name","primary_domain"]}' | jq .

# Paid answer — $0.10 USDC on Base, x402.
curl -sS -X POST "$BASE/v1/entity-evidence" \
  -H 'content-type: application/json' \
  -H "X-PAYMENT: $X_PAYMENT" \
  -d '{"domain":"stripe.com","fields":["legal_name","headquarters","founded_year"]}' | jq .

Supported fields: legal_name, primary_domain, headquarters, industry, key_executives, last_reported_funding, founded_year, employee_count.

What you are paying for

These are the service's own guarantees, returned verbatim by the free preflight above — read live on 2026-09-13:

• every returned field carries value, source URL, verbatim excerpt, retrieved_at, confidence and n-of-m source agreement
• excerpts are verified against the fetched document before return
• conflicting sources are returned, not hidden
• fields that cannot be evidenced are returned UNKNOWN, never guessed
• an unresolvable company is still charged for — a defect measured 2026-09-30 with a fix in progress, affecting only the no-evidence cases. This text is dated: if it still says a fix is in progress after 2026-10-14, the fix has stalled and this sentence is the stale one.

Honest limits

• Coverage is what the open web publishes. A company with no reachable public record returns UNKNOWN fields, and that is the honest answer rather than a plausible one.
• A verbatim excerpt is evidence of a claim, not proof of a fact. A registry, a company's own site and a news page can all be wrong; what this guarantees is that the quote is really on the page it names.
• Conflicts are surfaced, not resolved. When credible sources disagree you get both readings — deciding between them is yours.

Price

Price, network, asset and payee above were read from the live 402 challenge on 2026-09-13, not from documentation. No signup, no API key, no account.

Companion skill

mercator-address-evidence — the same discipline applied to contract addresses before you transact, at $0.25.