AISub
REMOTE · AISUB.YUANWU.AI
ChatGPT, Claude, Gemini, Perplexity and Grok subscription prices by country, with price history.
Available components
Last scanned (1 hour ago)
Scores higher than 55% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability56
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1553 tokens (~258/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management20
- Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage96
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 87% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 0
- “compare_credits” reworded the description of “product” cosmetic
- “compare_prices” reworded the description of “product” cosmetic
- “get_price_history” reworded the description of “product” cosmetic
- “get_region_prices” reworded the description of “product” cosmetic
- “list_catalog” reworded the description of “product” cosmetic
5 cosmetic changes on this day. Switch on “Show cosmetic changes” to see them.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 30 Oct 26 68
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://aisub.yuanwu.ai/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=yuanwu.ai | CN=YE2,O=Let's Encrypt,C=US | 25 Oct 2026 | 23 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 65a5696ce73cd1f856ca0ebb2930905e8e0 |
| SANs: *.yuanwu.ai, yuanwu.ai | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of aisub.yuanwu.ai. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| ai. | present | 1814, 3799 | 8, 8 | Verified |
| yuanwu.ai. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://aisub.yuanwu.ai/mcp | Verified | 200 | |
| http (plaintext) | http://aisub.yuanwu.ai/mcp | HTTPS enforced | 301 | https://aisub.yuanwu.ai/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
compare_credits Compare credit pack prices ~259
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?".
| Name | Type | Req | Description |
|---|---|---|---|
| channel | string | – | Sales channel: web (ChatGPT website checkout, ChatGPT only) or app_store (iOS in-app purchase). Defaults to web for ChatGPT and app_store for other products. |
| currency | string | – | ISO 4217 currency for converted reference prices, e.g. USD, CNY, EUR. Defaults to USD for en and CNY for zh. |
| limit | integer | – | – |
| locale | string | – | Language for region and plan names: en (default) or zh. |
| pack | string | – | all (default), unit for single-credit prices, or a pack quantity such as 1000. |
| page | integer | – | – |
| product | – | – | Product key returned by list_catalog, including dynamically registered app_<apple-id> products. |
| region | string | – | Optional filter by region code or name. |
| sort | string | – | price_asc: cheapest per 100 credits first (default); price_desc; region: alphabetical. |
| Name | Type | Req | Description |
|---|---|---|---|
| availablePacks | array | yes | – |
| channel | string | yes | – |
| currency | string | yes | – |
| dataUpdatedAt | string|null | yes | – |
| fxUpdatedAt | string|null | yes | – |
| matchingOffers | integer | yes | – |
| pack | string | yes | – |
| page | integer | yes | – |
| product | string | yes | – |
| rows | array | yes | – |
| totalPages | integer | yes | – |
| url | string | yes | – |
No examples provided.
compare_prices Compare a plan's price across regions ~364
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.
| Name | Type | Req | Description |
|---|---|---|---|
| channel | string | – | Sales channel: web (ChatGPT website checkout, ChatGPT only) or app_store (iOS in-app purchase). Defaults to web for ChatGPT and app_store for other products. |
| currency | string | – | ISO 4217 currency for converted reference prices, e.g. USD, CNY, EUR. Defaults to USD for en and CNY for zh. |
| interval | string | – | Billing interval: month (default) or year. |
| limit | integer | – | Rows per page, 1–50. |
| locale | string | – | Language for region and plan names: en (default) or zh. |
| page | integer | – | – |
| plan | string | – | Plan key from list_catalog, e.g. plus, pro, business (ChatGPT), claude_pro, gemini_ai_pro, perplexity_pro, supergrok. Defaults to the product's main plan. |
| product | – | – | Product key returned by list_catalog, including dynamically registered app_<apple-id> products. |
| region | string | – | Optional filter by region code, name or currency, e.g. JP, Japan, 日本, EUR. |
| sort | string | – | asc: cheapest first (default); desc: most expensive first; name: alphabetical. |
| tax | string | – | Only regions whose reference price has this tax label. |
| Name | Type | Req | Description |
|---|---|---|---|
| channel | string | yes | – |
| currency | string | yes | – |
| dataUpdatedAt | string|null | yes | – |
| fxStale | boolean | yes | – |
| fxUpdatedAt | string|null | yes | – |
| interval | string | yes | – |
| notes | array | yes | – |
| oldestQuoteUpdatedAt | string|null | yes | – |
| page | integer | yes | – |
| plan | string | yes | – |
| planName | string | yes | – |
| product | string | yes | – |
| rows | array | yes | – |
| staleQuotes | integer | yes | – |
| summary | object | yes | – |
| totalPages | integer | yes | – |
| unit | string | yes | – |
| url | string | yes | – |
No examples provided.
get_price_history Price change history ~235
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?".
| Name | Type | Req | Description |
|---|---|---|---|
| channel | string | – | Sales channel: web (ChatGPT website checkout, ChatGPT only) or app_store (iOS in-app purchase). Defaults to web for ChatGPT and app_store for other products. |
| interval | string | – | Billing interval: month (default) or year. |
| limit | integer | – | – |
| locale | string | – | Language for region and plan names: en (default) or zh. |
| plan | string | – | Plan key from list_catalog, e.g. plus, pro, business (ChatGPT), claude_pro, gemini_ai_pro, perplexity_pro, supergrok. Defaults to the product's main plan. |
| product | – | – | Product key returned by list_catalog, including dynamically registered app_<apple-id> products. |
| region | string | yes | Country or region as an ISO 3166 code (JP), English name (Japan) or Chinese name (日本). |
| Name | Type | Req | Description |
|---|---|---|---|
| changes | array | yes | – |
| channel | string | yes | – |
| interval | string | yes | – |
| plan | string | yes | – |
| planName | string | yes | – |
| product | string | yes | – |
| region | object | yes | – |
| trackedSince | string|null | yes | Earliest observation AISub retains for this series; no changes before it are known. |
| url | string | yes | – |
No examples provided.
get_recent_price_changes Recent price changes ~100
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?".
| Name | Type | Req | Description |
|---|---|---|---|
| days | integer | – | Look-back window in days, 1–90. |
| limit | integer | – | – |
| locale | string | – | Language for region and plan names: en (default) or zh. |
| product | – | – | Only changes for this product. |
| Name | Type | Req | Description |
|---|---|---|---|
| changes | array | yes | – |
| days | integer | yes | – |
| total | integer | yes | – |
| trackedSince | string|null | yes | – |
| url | string | yes | – |
No examples provided.
get_region_prices All plan prices in one region ~178
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?".
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | ISO 4217 currency for converted reference prices, e.g. USD, CNY, EUR. Defaults to USD for en and CNY for zh. |
| locale | string | – | Language for region and plan names: en (default) or zh. |
| product | – | – | Product key returned by list_catalog, including dynamically registered app_<apple-id> products. |
| region | string | yes | Country or region as an ISO 3166 code (JP), English name (Japan) or Chinese name (日本). |
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | yes | – |
| dataUpdatedAt | string|null | yes | – |
| fxUpdatedAt | string|null | yes | – |
| missing | array | yes | – |
| notes | array | yes | – |
| prices | array | yes | – |
| product | string | yes | – |
| region | object | yes | – |
| url | string|null | yes | – |
No examples provided.
list_catalog List products, plans and regions ~155
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.
| Name | Type | Req | Description |
|---|---|---|---|
| channel | string | – | Sales channel: web (ChatGPT website checkout, ChatGPT only) or app_store (iOS in-app purchase). Defaults to web for ChatGPT and app_store for other products. |
| locale | string | – | Language for region and plan names: en (default) or zh. |
| product | – | – | Product key returned by list_catalog, including dynamically registered app_<apple-id> products. |
| Name | Type | Req | Description |
|---|---|---|---|
| products | array | yes | – |
No examples provided.
How do I install the AISub MCP server?
AISub is a hosted endpoint at https://aisub.yuanwu.ai/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · aisub.yuanwu.ai
claude mcp add --transport http ai-yuanwu-aisub 'https://aisub.yuanwu.ai/mcp'
What is the AISub MCP server?
AISub is an MCP server listed in the public MCP registry as ai.yuanwu/aisub. ChatGPT, Claude, Gemini, Perplexity and Grok subscription prices by country, with price history. This page covers its hosted endpoint (https://aisub.yuanwu.ai/mcp).
Is the AISub MCP server safe to use?
AISub scores 70 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the AISub MCP server expose?
AISub exposes 6 tools: list_catalog, compare_prices, get_region_prices, get_price_history, get_recent_price_changes, compare_credits. Their descriptions and schemas cost roughly 1,291 tokens of context every time the server is loaded.
Does the AISub MCP server require authentication?
No. We connected to AISub without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the AISub MCP server still maintained?
AISub is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.