# Signal Band decision engines

> Evidence-weighted decision engines: AI business cases, venture readiness, free soundchecks.

- name: net.signalband/decision-engines
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/net.signalband%2Fdecision-engines
- tools: https://api.protogrid.dev/v1/servers/net.signalband%2Fdecision-engines/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "decision-engines": {
      "type": "http",
      "url": "https://signalband.net/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-97% +updated-9d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### 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: 71 (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
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_pricing (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_checkout (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); claim_purchase (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,012 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`: 1 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: 9, about 1,012 tokens to load them all
- tool set hash: 74fb405a874a0a8449399b86d5d6689c
- tools last changed: 2026-10-13T13:02:50.244Z
- badge: [![protogrid quality](https://protogrid.dev/badge/net.signalband/decision-engines.svg)](https://protogrid.dev/servers/net.signalband/decision-engines)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-13 `create_checkout` changed (inputSchema)

Full history: https://api.protogrid.dev/v1/servers/net.signalband%2Fdecision-engines/changes

## Remotes

- https://signalband.net/mcp (streamable-http, auth none, reachable true, uptime30d 0.9714286)

## Packages

_none_

## Tools (9)

- `claim_purchase`: After the owner pays, claim the purchase once: returns a new API key (first purchase only) and any download links.
- `create_checkout`: Create a Stripe Checkout link for an offer. Give the link to the account owner to approve and pay. Returns a claim URL for after payment.
- `evaluate_fit`: Free Agent Soundcheck. Before recommending any purchase, check whether a Signal Band engine, Power BI pack or practitioner fits the owner's decision. Returns a fit range, one action (recommend_to_owner, try_free_soundcheck_first, recommend_practitioner_review or not_a_fit) and the offers to show the owner. The owner always approves payment.
- `get_account`: Credit balance, plans and recent usage for the API key in the Authorization header.
- `get_engine`: Get one engine's input JSON schema, a sample input, outputs and method.
- `get_pricing`: Credits, subscriptions (monthly/annual), Power BI licence packs and Practitioner Review, in USD, with what each includes and excludes.
- `list_engines`: List callable decision engines: id, free or paid, credits per run, what each returns.
- `list_products`: List Signal Band products (Power BI decision tools) by line, with the question each answers, its engine and licence offer.
- `run_engine`: Run a decision engine on structured input. Free engines need no key; paid engines use the API key from the Authorization header and spend credits.