# TLS certificate health

Certificate verification, days until expiry, chain and protocol versions for a host.

| | |
|---|---|
| Price | $0.01 per call, in USDC over x402 |
| Can be bought now | no — endpoint\_unreachable |
| Category | web |
| Seller | opdevio |
| Tools | 15 |
| Listing page | https://fiatdock.com/service/svc_3e5e5603-b088-4aff-9f8f-c20df2914fe3 |
| Endpoint to call | <https://fiatdock.com/s/svc_3e5e5603-b088-4aff-9f8f-c20df2914fe3> |

## What it does

Connects and reports what the certificate actually is: whether it verifies, how many days remain, the issuer, the chain as presented, and which TLS versions negotiate. Measured by connecting, not by reading a database.

## How to buy

```text
PAID ($0.01/call). This listing's endpoint did not answer FiatDock's last check (last checked 2026-10-24T23:49:57.552Z), so it may be asleep or gone — but that check can be hours old, and free hosts wake on the first request. Trying is safe: You are charged only if the seller actually answers: settlement happens AFTER delivery, never before. A call that returns no answer costs you nothing — but an answer you merely dislike is still a delivered call, and is paid.
```

## Tools (15)

- `agent_work`
- `check_x402`
- `check_agent_access`
- `check_tls`
- `check_headers`
- `check_address`
- `check_package`
- `check_x402_seller`
- `sec_facts`
- `spec_digest`
- `data_x402_conformance`
- `check_x402_listed`
- `data_bazaar_snapshot`
- `check_json_schema`
- `check_redirect_chain`

---

The same listing as JSON: https://fiatdock.com/v1/marketplace/services/svc_3e5e5603-b088-4aff-9f8f-c20df2914fe3 · the whole catalog: https://fiatdock.com/llms.txt