# AISub

> ChatGPT, Claude, Gemini, Perplexity and Grok subscription prices by country, with price history.

- name: ai.yuanwu/aisub
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 96/100
- quality: 90/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/ai.yuanwu%2Faisub
- tools: https://api.protogrid.dev/v1/servers/ai.yuanwu%2Faisub/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "aisub": {
      "type": "http",
      "url": "https://aisub.yuanwu.ai/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 85
- drivers: +repository +dns-namespace +website +reachable +uptime-100% +updated-8d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 90/100 (strong)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### 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`: 6 of 6 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 2,353 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 75 (weight 15)

- warn `stability.changes`: 6 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: 6, about 2,353 tokens to load them all
- tool set hash: 99cefe5a38e20723a8366f1f1f3eaa8b
- tools last changed: 2026-11-05T00:34:30.732Z
- badge: [![protogrid quality](https://protogrid.dev/badge/ai.yuanwu/aisub.svg)](https://protogrid.dev/servers/ai.yuanwu/aisub)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-11-05 `compare_credits` changed (inputSchema)
- 2026-11-05 `get_recent_price_changes` changed (inputSchema)
- 2026-11-05 `get_price_history` changed (inputSchema)
- 2026-11-05 `get_region_prices` changed (inputSchema)
- 2026-11-05 `compare_prices` changed (inputSchema)
- 2026-11-05 `list_catalog` changed (inputSchema, outputSchema)

Full history: https://api.protogrid.dev/v1/servers/ai.yuanwu%2Faisub/changes

## Remotes

- https://aisub.yuanwu.ai/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (6)

- `compare_credits`: Compare credit pack prices (extra usage credits sold on top of a subscription, such as ChatGPT credits) across regions, normalised to the price per 100 credits in one currency. Answers questions like "where are ChatGPT credits cheapest?".
- `compare_prices`: Rank the price of one subscription plan (e.g. ChatGPT Plus, Claude Pro, Google AI Pro) across countries and regions, converted to one currency. Answers questions like "where is ChatGPT Plus cheapest?" or "how much is Claude Pro in Turkey?". Prices are monthly equivalents; for yearly billing the full-year total is also given. Each response includes when the prices and exchange rates were last updated.
- `get_price_history`: List the recorded price changes of one plan in one region, newest first, with the previous and new local price. Use it for questions like "has ChatGPT Plus gotten more expensive in Brazil?".
- `get_recent_price_changes`: List monthly subscription price changes AISub recorded across all regions in the last N days, newest first. Use it for questions like "which countries changed ChatGPT prices this month?".
- `get_region_prices`: Show every plan price of one product in one country or region, for each sales channel and billing interval, with its rank among all regions and its difference from the United States. Answers questions like "how much does ChatGPT cost in Japan?" or "is Claude cheaper in India than in the US?".
- `list_catalog`: List the AI subscription products, sales channels, plan keys, billing intervals and regions that AISub tracks. Call without arguments for an overview; pass a product (and optionally a channel) to also get its region codes and the currencies available for conversion. Use the returned plan keys and region codes with the other tools.