Scoreproof
REMOTE · SCOREPROOF-FKKUCTJOKQ-UC.A.RUN.APP · 2 COMPONENTS
Convert MusicXML, MIDI, ABC, MEI and Humdrum, print sheet music, and verify every note survived.
Available components
Last scanned (1 hour ago)
Scores higher than 54% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Design and Media
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 Usability64
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1237 tokens (~154/item across 8 items; 8 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 Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
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
- 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 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 9 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
Unverified: 1 category
A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
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 69
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://scoreproof-fkkuctjokq-uc.a.run.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.a.run.app | CN=WR2,O=Google Trust Services,C=US | 7 Oct 2026 | 30 Dec 2026 | ECDSA 256 | SHA256-RSA | 53da11951e5eb49012fb872c3cb3e54d |
| SANs: *.a.run.app, run.app, *.africa-south1.run.app, *.asia-east1.run.app, *.asia-east2.run.app, *.asia-northeast1.run.app, *.asia-northeast2.run.app, *.asia-northeast3.run.app, *.asia-south1.run.app, *.asia-south2.run.app, *.asia-southeast1.run.app, *.asia-southeast2.run.app and 93 more | ||||||
| CN=WR2,O=Google Trust Services,C=US (CA) | CN=GTS Root R1,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | RSA 2048 | SHA256-RSA | 7ff005a07c4cded100ad9d66a5107b98 |
| CN=GTS Root R1,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 19 Jun 2020 | 28 Jan 2028 | RSA 4096 | SHA256-RSA | 77bd0d6cdb36f91aea210fc4f058d30d |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of scoreproof-fkkuctjokq-uc.a.run.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| run.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://scoreproof-fkkuctjokq-uc.a.run.app/mcp | Verified | 200 | |
| http (plaintext) | http://scoreproof-fkkuctjokq-uc.a.run.app/mcp | HTTPS enforced | 302 | https://scoreproof-fkkuctjokq-uc.a.run.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 →
compare Compare two versions ~51
Show what changed between two versions of a piece, bar by bar, even across formats.
| Name | Type | Req | Description |
|---|---|---|---|
| a | string | yes | Link to the first version |
| b | string | yes | Link to the second version |
Structured output declared, but exposes no named fields.
No examples provided.
convert Convert a music file ~179
Convert a score between formats and verify the result note by note, or turn it into sheet music (pdf, png, svg) or audio (wav). Returns a download link, a confidence level (exact, high, medium, low), the share of notes kept, features the target format cannot hold, and exporter quirks that were repaired on the way in.
| Name | Type | Req | Description |
|---|---|---|---|
| content | – | – | The score itself as text (ABC, MusicXML, MEI or Humdrum) |
| file | – | – | Link to the music file: from the Scoreproof upload page, or any public https URL |
| filename | – | – | Name for content, with its extension (default tune.abc) |
| to | string | yes | musicxml, mxl, midi, abc, mei, humdrum, or pdf/png/svg (sheet music) or wav (audio) |
Structured output declared, but exposes no named fields.
No examples provided.
extract Extract parts or bars ~149
Save chosen parts and/or bars of a score as new files.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | – | – | Bar range such as "1-8", "5" or "9-" |
| content | – | – | The score itself as text (ABC, MusicXML, MEI or Humdrum) |
| each_part | boolean | – | One file per part (to make parts for players) |
| file | – | – | Link to the music file: from the Scoreproof upload page, or any public https URL |
| filename | – | – | Name for content, with its extension (default tune.abc) |
| parts | – | – | Parts by number (1-based) or name; default all |
| to | – | – | Output format (default: same) |
Structured output declared, but exposes no named fields.
No examples provided.
inspect Look at a score ~145
Summarise a score and show some bars as ABC notation: title, parts with instruments and ranges, key, meters, tempos and bar count.
| Name | Type | Req | Description |
|---|---|---|---|
| bars | – | – | Bars to show as ABC, e.g. "1-8" (max 32); "" for none |
| content | – | – | The score itself as text (ABC, MusicXML, MEI or Humdrum) |
| file | – | – | Link to the music file: from the Scoreproof upload page, or any public https URL |
| filename | – | – | Name for content, with its extension (default tune.abc) |
| parts | – | – | Parts by number (1-based) or name; default all |
Structured output declared, but exposes no named fields.
No examples provided.
list_formats List supported formats ~22
Formats Scoreproof reads and writes, and what each one cannot hold.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
render Render sheet music or audio ~133
Engrave sheet music to print or view (PDF, PNG, SVG) or make an audio preview (WAV). Returns download links.
| Name | Type | Req | Description |
|---|---|---|---|
| content | – | – | The score itself as text (ABC, MusicXML, MEI or Humdrum) |
| file | – | – | Link to the music file: from the Scoreproof upload page, or any public https URL |
| filename | – | – | Name for content, with its extension (default tune.abc) |
| page_size | string | – | Paper size for pdf and png |
| to | string | – | pdf: printable sheet music; png/svg: page images; wav |
Structured output declared, but exposes no named fields.
No examples provided.
transpose Transpose a score ~173
Transpose a score by an interval, into a key, or between concert and written pitch. Give exactly one of interval, key or pitch.
| Name | Type | Req | Description |
|---|---|---|---|
| content | – | – | The score itself as text (ABC, MusicXML, MEI or Humdrum) |
| file | – | – | Link to the music file: from the Scoreproof upload page, or any public https URL |
| filename | – | – | Name for content, with its extension (default tune.abc) |
| interval | – | – | Interval ("M2", "-m3", "P5") or semitones ("2", "-3") |
| key | – | – | Target key, e.g. "D", "Bb major", "F# minor" |
| pitch | – | – | Switch transposing instruments to concert or written pitch |
| to | – | – | Output format (default: same) |
Structured output declared, but exposes no named fields.
No examples provided.
validate Check a score for problems ~98
Check a score: exporter quirks that needed repair, bars that do not fill their time signature, and notes outside an instrument's range.
| Name | Type | Req | Description |
|---|---|---|---|
| content | – | – | The score itself as text (ABC, MusicXML, MEI or Humdrum) |
| file | – | – | Link to the music file: from the Scoreproof upload page, or any public https URL |
| filename | – | – | Name for content, with its extension (default tune.abc) |
Structured output declared, but exposes no named fields.
No examples provided.
How do I install the Scoreproof MCP server?
Scoreproof is a hosted endpoint at https://scoreproof-fkkuctjokq-uc.a.run.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 · scoreproof-fkkuctjokq-uc.a.run.app
claude mcp add --transport http asampat3090-scoreproof 'https://scoreproof-fkkuctjokq-uc.a.run.app/mcp'
What is the Scoreproof MCP server?
Scoreproof is an MCP server listed in the public MCP registry as io.github.asampat3090/scoreproof. Convert MusicXML, MIDI, ABC, MEI and Humdrum, print sheet music, and verify every note survived. This page covers its hosted endpoint (https://scoreproof-fkkuctjokq-uc.a.run.app/mcp).
Is the Scoreproof MCP server safe to use?
Scoreproof scores 69 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 Scoreproof MCP server expose?
Scoreproof exposes 8 tools: convert, render, inspect, validate, compare, and 3 more. Their descriptions and schemas cost roughly 950 tokens of context every time the server is loaded.
Does the Scoreproof MCP server require authentication?
No. We connected to Scoreproof without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Scoreproof MCP server still maintained?
Scoreproof 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.