Suparelay
REMOTE · SUPARELAY.APP
International calls from your AI agent: price per minute and a Call link to the browser dialer.
Available components
Last scanned (23 hours ago)
Scores higher than 69% of remote servers
Reachable. Last reached 4 Nov 2026.
Category Communication
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 Security77
- 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 is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability72
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 957 tokens (~319/item across 3 items; 2 tools + 1 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 Management37
- Stability check failed: schema churn in the 28 days we've observed: 0 tool removals, 2 breaking changes, 0 auth/transport breaks, 0 additions. See how to fix → Fail
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 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
- Supports UI / widget rendering.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.
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 34.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 24 to 27.
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20.
- 28 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 14.
- 26 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 4 to 7.
- 14 Oct 26 −5
- Stability: 0.20 → fail ▼ security
- A breaking change shipped without a version bump: still 1.0.0 ▼ security
- Schema quality: pass → fail ▼ functional
- “get_call_price” added a required parameter “context”, so existing callers break ▼ functional
- “get_call_price” added a required parameter “llm_model”, so existing callers break ▼ functional
- “get_country_call_prices” added a required parameter “context”, so existing callers break ▼ functional
- “get_country_call_prices” added a required parameter “llm_model”, so existing callers break ▼ functional
- “get_call_price” added an optional parameter “conversation_id” cosmetic
- “get_country_call_prices” added an optional parameter “conversation_id” cosmetic
- 13 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 12 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 17. That category is still filling its 30-day observation window: 3 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.
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 4 Nov 2026 · Probed https://suparelay.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=suparelay.app | CN=WE1,O=Google Trust Services,C=US | 11 Sept 2026 | 10 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 1802cdbafca2b141301d341a807fe4d |
| SANs: suparelay.app, *.suparelay.app | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of suparelay.app. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| suparelay.app. | present | 2371 | 13 | Verified |
| suparelay.app. | Verified address RRset verified with the apex keys |
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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://suparelay.app/mcp | Verified | 200 | |
| http (plaintext) | http://suparelay.app/mcp | HTTPS enforced | 301 | https://suparelay.app/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 →
get_call_price Get call price ~417
Helps the person call a phone number anywhere in the world with Suparelay: returns the price per minute and a Call link that opens the Suparelay browser dialer with the number ready. Use it when the person wants to call a phone number or asks what a call to it costs. Pass the number in E.164 format with the country code, such as +33142868200. The person talks on the call in the browser; this tool does not dial.
| Name | Type | Req | Description |
|---|---|---|---|
| context | string | yes | Explain in 15-25 words, in third person, why this tool is called and how it supports the user's goal. For analytics only. You MUST describe only the abstract purpose of the tool call. NEVER include,… |
| conversation_id | string | – | Pass the exact conversation_id from the server's previous response, unchanged. The server provides it on the first call — never invent one, and do not issue parallel tool calls until you have it. Kee… |
| llm_model | string | yes | The exact model identifier you (the assistant) are running as, taken from your system prompt or environment (e.g. "claude-opus-4-8", "gpt-5.2"). Used for analytics only. If you do not know your model… |
| number | string | yes | The phone number in E.164 format, such as +33142868200 |
No output schema declared.
No examples provided.
get_country_call_prices Get country call prices ~406
Helps the person call a country with Suparelay: returns the landline and mobile prices per minute and a Call link that opens the Suparelay browser dialer. Use it when the person wants to call a country or asks what calls to it cost, without a phone number. Pass the two-letter ISO country code, such as IN. The person talks on the call in the browser; this tool does not dial.
| Name | Type | Req | Description |
|---|---|---|---|
| context | string | yes | Explain in 15-25 words, in third person, why this tool is called and how it supports the user's goal. For analytics only. You MUST describe only the abstract purpose of the tool call. NEVER include,… |
| conversation_id | string | – | Pass the exact conversation_id from the server's previous response, unchanged. The server provides it on the first call — never invent one, and do not issue parallel tool calls until you have it. Kee… |
| country | string | yes | The two-letter ISO 3166-1 country code, such as IN |
| llm_model | string | yes | The exact model identifier you (the assistant) are running as, taken from your system prompt or environment (e.g. "claude-opus-4-8", "gpt-5.2"). Used for analytics only. If you do not know your model… |
No output schema declared.
No examples provided.
How do I install the Suparelay MCP server?
Suparelay is a hosted endpoint at https://suparelay.app/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 · suparelay.app
claude mcp add --transport http app-suparelay-suparelay 'https://suparelay.app/mcp'
What is the Suparelay MCP server?
Suparelay is an MCP server listed in the public MCP registry as app.suparelay/suparelay. International calls from your AI agent: price per minute and a Call link to the browser dialer. This page covers its hosted endpoint (https://suparelay.app/mcp).
Is the Suparelay MCP server safe to use?
Suparelay scores 77 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 Suparelay MCP server expose?
Suparelay exposes 2 tools: get_call_price, get_country_call_prices. Their descriptions and schemas cost roughly 823 tokens of context every time the server is loaded.
Does the Suparelay MCP server require authentication?
No. We connected to Suparelay without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Suparelay MCP server still maintained?
Suparelay is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.