Coinslot — the vending machine for machines
REMOTE · COINSLOT.DEV · SCANNED SEP 28
13 micro-tools for agents: read pages, verify email, convert, validate, diff, extract. AI-operated.
Available components
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 Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 13 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- 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 Usability75
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1333 tokens (~102/item across 13 items; 13 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage86
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 57% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 13 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 14 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the Coinslot — the vending machine for machines MCP server?
Coinslot — the vending machine for machines is a hosted endpoint at https://coinslot.dev/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 · coinslot.dev
claude mcp add --transport http dev-coinslot-coinslot 'https://coinslot.dev/mcp'
{
"mcpServers": {
"dev-coinslot-coinslot": {
"url": "https://coinslot.dev/mcp"
}
}
} {
"servers": {
"dev-coinslot-coinslot": {
"type": "http",
"url": "https://coinslot.dev/mcp"
}
}
} [mcp_servers.dev-coinslot-coinslot] url = "https://coinslot.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"dev-coinslot-coinslot": {
"type": "remote",
"url": "https://coinslot.dev/mcp",
"enabled": true
}
}
} openclaw mcp add dev-coinslot-coinslot --url 'https://coinslot.dev/mcp' --transport streamable-http
mcp_servers:
dev-coinslot-coinslot:
url: "https://coinslot.dev/mcp" {
"McpServers": {
"dev-coinslot-coinslot": {
"Transport": "http",
"Url": "https://coinslot.dev/mcp"
}
}
} assistant mcp add dev-coinslot-coinslot -t streamable-http -u 'https://coinslot.dev/mcp'
{
"mcpServers": {
"dev-coinslot-coinslot": {
"type": "http",
"url": "https://coinslot.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 5 Sept 26 0
- Stability: 0.97 → pass security
- 4 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
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 28 Sept 2026 · Probed https://coinslot.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=coinslot.dev | CN=WE1,O=Google Trust Services,C=US | 6 Aug 2026 | 4 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | 17b77218b31b5ce1302cd7adbb49845 |
| SANs: coinslot.dev, www.coinslot.dev, *.www.coinslot.dev | ||||||
| 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 insecure
Validation of coinslot.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| coinslot.dev. | 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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://coinslot.dev/mcp | Verified | 200 | |
| http (plaintext) | http://coinslot.dev/mcp | Inconclusive | 405 |
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 →
convert JSON ↔ CSV ~95
Convert an array of JSON objects to CSV (nested keys become dot-path columns) or CSV back to JSON. POST { direction: 'json-to-csv'|'csv-to-json', data }. Price: $0.002/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | yes | Array of objects (json-to-csv) or CSV string (csv-to-json) |
| direction | string | yes | – |
No output schema declared.
No examples provided.
cron Cron Decode ~92
Parse a 5-field cron expression: get a plain-English explanation and the next N run times (UTC). POST { expression, count?, from? }. Price: $0.002/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| count | integer | – | – |
| expression | string | yes | 5-field cron or @alias |
| from | string | – | ISO date to project from |
No output schema declared.
No examples provided.
diff Text Diff ~90
Line-based diff of two texts. Returns unified diff plus structured changes (added/removed/unchanged counts and hunks). POST { a, b, context? } (max 200KB each). Price: $0.002/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| a | string | yes | – |
| b | string | yes | – |
| context | integer | – | – |
No output schema declared.
No examples provided.
email_verify Email Verify ~82
Check an email address: RFC syntax, live MX records via DNS-over-HTTPS, and disposable-domain screening. POST { email } or { emails: [...] } (max 20). Price: $0.003/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| string | – | Single address | |
| emails | array | – | – |
No output schema declared.
No examples provided.
extract Extract Pack ~81
Pull structured data out of raw text: emails, URLs, IPv4/IPv6, phone numbers, dates. Deduplicated with counts. POST { text } (max 500KB). Price: $0.003/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Raw text, max 500KB |
No output schema declared.
No examples provided.
feed_to_json Feed → JSON ~99
Parse an RSS 2.0 or Atom feed into clean JSON: title, items with link/date/summary, HTML stripped. POST { xml } (max 1MB) or { url } to fetch. Price: $0.004/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | – | Feed URL to fetch instead |
| xml | string | – | Feed XML, max 1MB |
No output schema declared.
No examples provided.
html_to_markdown HTML → Markdown ~87
Convert HTML to clean Markdown: headings, links, images, lists, tables, code blocks, emphasis. Strips scripts, styles, and comments. POST { html } (max 500KB). Price: $0.005/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| html | string | yes | HTML document or fragment, max 500KB |
No output schema declared.
No examples provided.
json_schema_validate JSON Schema Validate ~100
Validate a JSON document against a JSON Schema (draft-07 core subset: types, required, enums, ranges, patterns, nesting, anyOf/allOf/oneOf). Returns all violations with paths. POST { schema, data }. Price: $0.003/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | yes | Document to validate |
| schema | object | yes | JSON Schema (draft-07 core subset) |
No output schema declared.
No examples provided.
markdown_to_html Markdown → HTML ~82
Render Markdown (GitHub-flavored: tables, fenced code, task lists) to clean HTML with raw inline HTML stripped. POST { markdown } (max 500KB). Price: $0.003/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| markdown | string | yes | GitHub-flavored Markdown, max 500KB |
No output schema declared.
No examples provided.
qr QR Code (SVG) ~114
Generate a QR code as standalone SVG. POST { text, ecLevel?: 'L'|'M'|'Q'|'H', margin?: 0-8, dark?, light? } (text max 2KB). Price: $0.005/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| dark | string | – | hex color |
| ecLevel | string | – | – |
| light | string | – | hex color |
| margin | integer | – | – |
| text | string | yes | – |
No output schema declared.
No examples provided.
read_page Read Page ~90
Fetch a public URL and return its content as clean Markdown plus title and metadata. One call instead of fetch + parse + convert. POST { url, maxBytes? } (default 1MB cap). Price: $0.005/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| maxBytes | integer | – | – |
| url | string | yes | Public http(s) URL |
No output schema declared.
No examples provided.
timezone Timezone Convert ~122
Convert a timestamp between IANA timezones with DST handled correctly. Returns local times, UTC offsets, weekday, and hour-of-day per zone. POST { time?, from?, to } — to is a zone or array (max 20). Price: $0.002/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | – | IANA zone the input wall-clock is in |
| time | – | – | ISO string, epoch, or 'now' |
| to | – | yes | IANA zone or array of zones (max 20) |
No output schema declared.
No examples provided.
validate_ids ID Validate Pack ~112
Validate identifiers with real checksum math: credit card (Luhn + brand), IBAN (mod-97), EAN-13/UPC-A, ISBN-10/13, UUID (with version). POST { type, value } or { items: [{type, value}] } (max 50). Price: $0.003/call with credits key; free demo without (2KB input cap).
| Name | Type | Req | Description |
|---|---|---|---|
| items | array | – | – |
| type | string | – | – |
| value | string | – | – |
No output schema declared.
No examples provided.
What is the Coinslot — the vending machine for machines MCP server?
Coinslot — the vending machine for machines is an MCP server listed in the public MCP registry as dev.coinslot/coinslot. 13 micro-tools for agents: read pages, verify email, convert, validate, diff, extract. AI-operated. This page covers its hosted endpoint (https://coinslot.dev/mcp).
Is the Coinslot — the vending machine for machines MCP server safe to use?
Coinslot — the vending machine for machines scores 71 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 Coinslot — the vending machine for machines MCP server expose?
Coinslot — the vending machine for machines exposes 13 tools: convert, email_verify, html_to_markdown, json_schema_validate, diff, and 8 more. Their descriptions and schemas cost roughly 1,246 tokens of context every time the server is loaded.
Does the Coinslot — the vending machine for machines MCP server require authentication?
No. We connected to Coinslot — the vending machine for machines without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Coinslot — the vending machine for machines MCP server still maintained?
Coinslot — the vending machine for machines is still listed as active in the MCP registry. We last reached this channel on 28 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.