On-Demand-Books
REMOTE · ON-DEMAND-BOOKS-DQ2YVPDH.FERMYON.APP · SCANNED SEP 20
Find personalized puzzle books by first name from a 100,000+ title Shopify catalog.
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 Security57
- 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 3 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 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 Usability82
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 458 tokens (~152/item across 3 items; 3 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 Management100
- No destabilizing schema changes in the last 30 days.Pass
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 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities40
- Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28. See how to fix → Fail
How do I install the On-Demand-Books MCP server?
On-Demand-Books is a hosted endpoint at https://on-demand-books-dq2yvpdh.fermyon.app/, 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 · on-demand-books-dq2yvpdh.fermyon.app
claude mcp add --transport http gmlewis-on-demand-books 'https://on-demand-books-dq2yvpdh.fermyon.app/'
{
"mcpServers": {
"gmlewis-on-demand-books": {
"url": "https://on-demand-books-dq2yvpdh.fermyon.app/"
}
}
} {
"servers": {
"gmlewis-on-demand-books": {
"type": "http",
"url": "https://on-demand-books-dq2yvpdh.fermyon.app/"
}
}
} [mcp_servers.gmlewis-on-demand-books] url = "https://on-demand-books-dq2yvpdh.fermyon.app/"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"gmlewis-on-demand-books": {
"type": "remote",
"url": "https://on-demand-books-dq2yvpdh.fermyon.app/",
"enabled": true
}
}
} openclaw mcp add gmlewis-on-demand-books --url 'https://on-demand-books-dq2yvpdh.fermyon.app/' --transport streamable-http
mcp_servers:
gmlewis-on-demand-books:
url: "https://on-demand-books-dq2yvpdh.fermyon.app/" {
"McpServers": {
"gmlewis-on-demand-books": {
"Transport": "http",
"Url": "https://on-demand-books-dq2yvpdh.fermyon.app/"
}
}
} assistant mcp add gmlewis-on-demand-books -t streamable-http -u 'https://on-demand-books-dq2yvpdh.fermyon.app/'
{
"mcpServers": {
"gmlewis-on-demand-books": {
"type": "http",
"url": "https://on-demand-books-dq2yvpdh.fermyon.app/"
}
}
} 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.
- 26 Aug 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 24 Aug 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.
- 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
- 6 Aug 26 0
- MCP protocol: pass → fail ▼ functional
- MCP protocol version: 2025-11-25 → 2025-03-26 functional
- 31 Jul 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
- 30 Jul 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
- 27 Jul 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 20 Sept 2026 · Probed https://on-demand-books-dq2yvpdh.fermyon.app/
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=fermyon.app | CN=YR1,O=Let's Encrypt,C=US | 9 Sept 2026 | 8 Dec 2026 | RSA 4096 | SHA256-RSA | 5a846958d106f6016de1abc4141a038b61c |
| SANs: *.fermyon.app, fermyon.app | ||||||
| CN=YR1,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | a20253f15f2691c05dc1ce13b9bcca4e |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of on-demand-books-dq2yvpdh.fermyon.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| fermyon.app. | 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://on-demand-books-dq2yvpdh.fermyon.app/ | Verified | 200 | |
| http (plaintext) | http://on-demand-books-dq2yvpdh.fermyon.app/ | HTTPS enforced | 301 | https://on-demand-books-dq2yvpdh.fermyon.app/ |
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_book On-Demand-Books: Get Book by Handle ~129
Re-resolve a single book's purchase URL, cover image, and ISBN from its Shopify product handle. Use this to refresh or re-reference a book across turns without re-running the full name search.
| Name | Type | Req | Description |
|---|---|---|---|
| handle | string | yes | Shopify product handle (as returned in the `shopify_handle` field of a `search_books` result). |
| utm_source | string | – | Optional UTM source tag for marketing attribution (e.g. 'mcp.so', 'claude', 'hn'). Appended as ?utm_source=<value> to the Shopify product URL. Defaults to 'mcp'. |
No output schema declared.
No examples provided.
search_books On-Demand-Books: Search Personalized Books ~192
Search for personalized puzzle books by first name. Returns matching books with direct Shopify purchase links, cover images, and ISBNs. A typical exact match returns 9 books across 3 puzzle types (mazes, name-sudokus, word searches) and 3 difficulty levels. When no exact match exists, returns similarly-named books. Use this whenever a user is shopping for a personalized gift and knows the recipient's first name.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | First name to search for personalized puzzle books (e.g. 'Susan', 'Bob'). Case-insensitive; non-letters are stripped. |
| utm_source | string | – | Optional UTM source tag for marketing attribution (e.g. 'mcp.so', 'claude', 'hn'). Appended as ?utm_source=<value> to all Shopify product URLs so the seller can track which channel drove the sale. De… |
No output schema declared.
No examples provided.
suggest_names On-Demand-Books: Suggest Available Names ~137
Suggest first names for which personalized puzzle books are likely available. Use this when a user is unsure of a spelling, wants gift-recipient ideas, or only has part of a name. Returns popular available names, optionally filtered by a case-insensitive prefix. To confirm a specific name has matching books, follow up with `search_books`.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum number of suggestions to return (default 20, max 100). |
| prefix | string | – | Optional name prefix to complete (e.g. 'su' -> 'Susan', 'Susie', 'Suzanne'). If omitted, returns a curated list of popular names. |
No output schema declared.
No examples provided.
What is the On-Demand-Books MCP server?
On-Demand-Books is an MCP server listed in the public MCP registry as io.github.gmlewis/on-demand-books. Find personalized puzzle books by first name from a 100,000+ title Shopify catalog. This page covers its hosted endpoint (https://on-demand-books-dq2yvpdh.fermyon.app/).
Is the On-Demand-Books MCP server safe to use?
On-Demand-Books 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 On-Demand-Books MCP server expose?
On-Demand-Books exposes 3 tools: search_books, suggest_names, get_book. Their descriptions and schemas cost roughly 458 tokens of context every time the server is loaded.
Does the On-Demand-Books MCP server require authentication?
No. We connected to On-Demand-Books without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the On-Demand-Books MCP server still maintained?
On-Demand-Books is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.