# Fresh SEM Agent Backlink Checkout

> Quote and track managed contextual backlink orders paid in USDC.

- name: com.freshsem/agent-backlinks
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 100/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.freshsem%2Fagent-backlinks
- tools: https://api.protogrid.dev/v1/servers/com.freshsem%2Fagent-backlinks/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "agent-backlinks": {
      "type": "http",
      "url": "https://freshsem.com/scripts/agent_backlinks_mcp.php"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-8d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 100/100 (strong)

### protocol: 100 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- pass `protocol.list_ttl`: tool list is cacheable (ttlMs 3600000)

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 7 of 7 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 1,071 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 7, about 1,071 tokens to load them all
- tool set hash: 9fa1e453bcf3ae267ffe44b47c85b395
- badge: [![protogrid quality](https://protogrid.dev/badge/com.freshsem/agent-backlinks.svg)](https://protogrid.dev/servers/com.freshsem/agent-backlinks)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://freshsem.com/scripts/agent_backlinks_mcp.php (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (7)

- `check_payment`: Ask Fresh SEM to look for the exact official-USDC payment from the quoted sending wallet and return the verified order state. This never signs or broadcasts.
- `check_service_health`: Read public endpoint availability and current MCP server information. This does not create an order or move funds.
- `create_quote`: Create one pending order and return exact USDC payment coordinates. This does not connect a wallet, sign, broadcast, or move funds. Keep the access token secret and obtain the wallet owner's approval before payment.
- `describe_backlink_service`: Read the verified offer, price, networks, fulfilment model, safety rules, and documentation without creating an order or moving funds.
- `get_order_status`: Return the authorized order state and continue safe payment reconciliation when appropriate. Treat an order as complete only when status is fulfilled.
- `get_payment_requirements`: Read supported chains, official USDC contracts, gas assets, exact-price rules, and owner-approval guidance. This never creates an order or signs a transaction.
- `submit_payment_proof`: Submit a transaction hash as a lookup aid. Fresh SEM independently verifies chain, official token, sender, recipient, amount, quote time, success, finality, and single use before fulfilment.