XLS.now MCP Server
REMOTE · XLS.NOW
Convert XLS spreadsheets to modern document, image and spreadsheet formats.
Available components
Last scanned (2 hours ago)
Scores higher than 56% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Documents and Files
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 Usability60
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 231 tokens (~57/item across 4 items; 4 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- 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 4 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 supported MCP spec version (2025-11-25); the latest is 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 +43
- HSTS header: unverified → fail ▼ security
- Authorization: unverified → partial ▲ security
- Injection markers: unverified → pass ▲ security
- Transport: fail → pass ▲ security
- Endpoint reachability: unreachable → reachable ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- Stability: unverified → 0.27 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day functional
- 3 Nov 26 0
- Endpoint reachability: reachable → unreachable ▼ security
- Capabilities: pass → unverified ▼ functional
- 2 Nov 26 −13
- HSTS header: fail → unverified ▼ security
- Transport: pass → fail ▼ security
- Authorization: Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. security
- Endpoint reachability: unreachable → reachable ▲ functional
- MCP protocol: unverified → pass ▲ functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day functional
- 1 Nov 26 −13
- HSTS header: unverified → fail ▼ security
- Transport: fail → pass ▲ security
- Authorization: Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the whole tool list to see what that exposes. security
- 31 Oct 26 −13
- Transport: pass → fail ▼ security
- 30 Oct 26 0
- Transport: fail → pass ▲ security
- 29 Oct 26 0
- Endpoint reachability: reachable → unreachable ▼ security
- HSTS header: fail → unverified ▼ security
- Authorization: partial → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Transport: pass → fail ▼ security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- 28 Oct 26 +29
- Authorization: unverified → partial ▲ security
- Injection markers: unverified → pass ▲ security
- First check of Judged manipulation: pass security
- Tool coverage: unverified → 100 ▲ functional
- First check of Tool coverage: 0 functional
- First check of Schema quality: fail functional
- First check of Schema quality: fair functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: pass functional
- First check of Tool coverage: 100 functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day 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 5 Nov 2026 · Probed https://xls.now/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=xls.now | CN=WE1,O=Google Trust Services,C=US | 7 Oct 2026 | 5 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 878a29327aa07c7e0e75d0f87783e8e3 |
| SANs: xls.now, *.xls.now | ||||||
| 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 xls.now. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| now. | present | 53572 | 8 | Verified |
| xls.now. | 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 | SAMEORIGIN |
| 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://xls.now/mcp | Verified | 400 | |
| http (plaintext) | http://xls.now/mcp | HTTPS enforced | 301 | https://xls.now/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 →
convert_image_url Convert an XLS spreadsheet from a URL ~109
Download a publicly accessible XLS or supported spreadsheet URL, submit it to XLS.now using a converter slug, and optionally wait for the result. Private-network URLs and embedded URL credentials are rejected.
| Name | Type | Req | Description |
|---|---|---|---|
| background_color | – | – | – |
| converter | string | yes | – |
| height | – | – | – |
| quality | integer | – | – |
| source_url | string | yes | – |
| strip_metadata | boolean | – | – |
| timeout_seconds | integer | – | – |
| wait_for_completion | boolean | – | – |
| width | – | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
get_api_usage Get XLS.now API usage ~24
Return the caller's XLS.now API credits, usage, and rate limit.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
get_conversion_status Get conversion status ~35
Check a XLS.now conversion job. A completed job includes an absolute, temporary download URL.
| Name | Type | Req | Description |
|---|---|---|---|
| job_id | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.
list_converters List XLS.now converters ~63
Search the live XLS.now converter catalog and return valid converter slugs such as xls-to-xlsx, xls-to-csv, xls-to-pdf, and xlsx-to-xls.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| search | string | – | – |
Structured output declared, but exposes no named fields.
No examples provided.
How do I install the XLS.now MCP Server server?
XLS.now MCP Server is a hosted endpoint at https://xls.now/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 · xls.now
claude mcp add --transport http chrisyau83-xls-now 'https://xls.now/mcp'
What is the XLS.now MCP Server server?
XLS.now MCP Server is listed in the public MCP registry as io.github.chrisyau83/xls-now. Convert XLS spreadsheets to modern document, image and spreadsheet formats. This page covers its hosted endpoint (https://xls.now/mcp).
Is the XLS.now MCP Server server safe to use?
XLS.now MCP Server 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 XLS.now MCP Server server expose?
XLS.now MCP Server exposes 4 tools: list_converters, convert_image_url, get_conversion_status, get_api_usage. Their descriptions and schemas cost roughly 231 tokens of context every time the server is loaded.
Does the XLS.now MCP Server server require authentication?
No. We connected to XLS.now MCP Server without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the XLS.now MCP Server server still maintained?
XLS.now MCP Server 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.