InkRelay
NPM · @INKRELAY/MCP
Print PDFs, ZPL labels and ESC/POS receipts on your printers and follow print jobs via InkRelay
Available components
Last scanned (20 hours ago)
Scores higher than 82% of npm servers
Category IoT and Hardware
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 30 of 93 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to GauravBR/inkrelay-ai). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 16 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability65
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1719 tokens (~101/item across 17 items; 17 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management53
- Stability observed for 16 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage79
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 36% 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
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 18 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.
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 25 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.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Oct 26 77
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 4 Nov 2026 · Analysed npm/@inkrelay/mcp@0.1.1
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | GauravBR/inkrelay-ai |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/GauravBR/inkrelay-ai/.github/workflows/release.yml@refs/tags/v0.1.1 |
| Rekor log index | 3314186909 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:ce09164d845ddeaba6e6889c211860ca3e1b2d26282437cfe9d812dd78bd89d19761eba34af59cb34b2101213f8a1aad08b96bc74358b67d3f52586e9 |
Background: How many MCP packages publish verified provenance →
Dependencies 93 packages
| Packages resolved | 93 |
|---|---|
| Stale | 30 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
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 →
cancel_print_job Cancel a print job ~44
Cancels a job that is still queued or sent. Once the agent has received it, the API answers 409 not_cancellable.
| Name | Type | Req | Description |
|---|---|---|---|
| jobId | string | yes | – |
No output schema declared.
No examples provided.
create_webhook Create a webhook endpoint ~78
Creates an endpoint that receives signed events (Standard Webhooks HMAC). Returns the whsec_ signing secret once: tell the user to store it as INKRELAY_WEBHOOK_SECRET. Live endpoints need https. Needs the admin scope.
| Name | Type | Req | Description |
|---|---|---|---|
| description | string | – | – |
| events | array | yes | – |
| url | string | yes | – |
No output schema declared.
No examples provided.
get_print_job Get a print job ~49
Returns a print job with its state, stateMessage and the time of each state change, plus its full event history.
| Name | Type | Req | Description |
|---|---|---|---|
| includeEvents | boolean | – | – |
| jobId | string | yes | – |
No output schema declared.
No examples provided.
get_printer Get a printer ~53
Returns one printer with its capabilities (papers in tenths of a millimetre, bins, dpis, duplex, color, nup), default options and custom paper sizes.
| Name | Type | Req | Description |
|---|---|---|---|
| printerId | string | yes | – |
No output schema declared.
No examples provided.
get_usage Get print usage ~26
Returns the plan, the live prints used and included this billing period, and earlier periods.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
list_computers List computers ~41
Lists the computers running the InkRelay agent, with their state (online, offline, disabled), OS and agent version.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
No output schema declared.
No examples provided.
list_events List events ~56
Reads the event feed (the same events webhooks deliver). For new events use dir asc with after set to the last nextCursor.
| Name | Type | Req | Description |
|---|---|---|---|
| after | string | – | – |
| dir | string | – | – |
| limit | integer | – | – |
No output schema declared.
No examples provided.
list_print_jobs List print jobs ~56
Lists recent print jobs, newest first, optionally filtered by printer, computer or state.
| Name | Type | Req | Description |
|---|---|---|---|
| computerId | string | – | – |
| limit | integer | – | – |
| printerId | string | – | – |
| state | string | – | – |
No output schema declared.
No examples provided.
list_printers List printers ~74
Lists printers with id, name, computer, online state, whether they are live (accept jobs) and their default options. Use get_printer for paper sizes, trays and other capabilities.
| Name | Type | Req | Description |
|---|---|---|---|
| computerId | string | – | Only printers of this computer |
| liveOnly | boolean | – | Only printers that accept jobs |
No output schema declared.
No examples provided.
list_webhooks List webhook endpoints ~19
Lists the webhook endpoints of this key's mode.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
ping_webhook Send a test webhook ~35
Queues a signed test delivery with type ping to an endpoint. Needs the admin scope.
| Name | Type | Req | Description |
|---|---|---|---|
| webhookId | string | yes | – |
No output schema declared.
No examples provided.
print_pdf Print a PDF ~260
Prints a PDF on a printer. Pass exactly one of url (public or signed http(s) URL, fetched once), base64, or filePath (a local file, read by this server). Up to 25 MB. With an ir_live_ key this prints on paper and counts toward the plan; with ir_test_ it runs on a virtual printer.
| Name | Type | Req | Description |
|---|---|---|---|
| base64 | string | – | – |
| expireAfter | integer | – | – |
| filePath | string | – | A file inside the folder this server runs in (or INKRELAY_FILE_ROOT) |
| idempotencyKey | string | – | Same key and body returns the first job instead of printing twice. Generated if omitted. |
| options | object | – | PDF options. Omitted options use the printer's defaults; unsupported ones are ignored and listed in stateMessage. |
| printerId | string | yes | Printer id from list_printers |
| qty | integer | – | How many times to print the document |
| timeoutSeconds | integer | – | – |
| title | string | yes | Shown in the dashboard and the OS print queue |
| url | string | – | – |
| wait | boolean | – | Wait until the job is done, error, cancelled or expired, then return it |
No output schema declared.
No examples provided.
print_raw Print raw bytes (ZPL, ESC/POS) ~263
Sends printer language bytes unchanged to a label or receipt printer, e.g. ZPL (^XA...^XZ) or ESC/POS. Pass exactly one of text (each character U+0000 to U+00FF becomes one byte, so \u001b is ESC), base64, url or filePath. Options do not apply. The OS queue must accept raw data (CUPS raw queue, or the printer's own or Generic / Text Only driver on Windows).
| Name | Type | Req | Description |
|---|---|---|---|
| base64 | string | – | – |
| expireAfter | integer | – | – |
| filePath | string | – | A file inside the folder this server runs in (or INKRELAY_FILE_ROOT) |
| idempotencyKey | string | – | Same key and body returns the first job instead of printing twice. Generated if omitted. |
| printerId | string | yes | Printer id from list_printers |
| qty | integer | – | How many times to print the document |
| text | string | – | – |
| timeoutSeconds | integer | – | – |
| title | string | yes | Shown in the dashboard and the OS print queue |
| url | string | – | – |
| wait | boolean | – | Wait until the job is done, error, cancelled or expired, then return it |
No output schema declared.
No examples provided.
reprint_print_job Reprint a job ~98
Prints the stored file of an earlier job again (files are kept 7 days), on the same printer or another one of the same mode.
| Name | Type | Req | Description |
|---|---|---|---|
| jobId | string | yes | – |
| printerId | string | – | Defaults to the original printer |
| timeoutSeconds | integer | – | – |
| title | string | – | – |
| wait | boolean | – | Wait until the job is done, error, cancelled or expired, then return it |
No output schema declared.
No examples provided.
update_printer Update printer settings ~131
Sets a printer's display name, live switch (enabled), default options, custom paper sizes (tenths of a millimetre; replaces the whole list) or remarks. Needs a key with the admin scope.
| Name | Type | Req | Description |
|---|---|---|---|
| customPapers | array | – | – |
| defaultOptions | object | – | PDF options. Omitted options use the printer's defaults; unsupported ones are ignored and listed in stateMessage. |
| displayName | string|null | – | – |
| enabled | boolean | – | The live switch: only enabled printers accept jobs |
| printerId | string | yes | – |
| remarks | string|null | – | – |
No output schema declared.
No examples provided.
wait_for_print_job Wait for a print job ~51
Polls a print job until it is done, error, cancelled or expired (or the timeout passes) and returns it.
| Name | Type | Req | Description |
|---|---|---|---|
| jobId | string | yes | – |
| timeoutSeconds | integer | – | – |
No output schema declared.
No examples provided.
whoami Identify the API key ~35
Returns the organization, plan, mode (test or live) and current usage behind INKRELAY_API_KEY. Call it first.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the InkRelay MCP server?
InkRelay runs locally as an npm package, launched with npx -y @inkrelay/mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @inkrelay/mcp
claude mcp add gauravbr-inkrelay -- npx -y @inkrelay/mcp
What is the InkRelay MCP server?
InkRelay is an MCP server listed in the public MCP registry as io.github.GauravBR/inkrelay. Print PDFs, ZPL labels and ESC/POS receipts on your printers and follow print jobs via InkRelay. This page covers its npm package (@inkrelay/mcp).
Is the InkRelay MCP server safe to use?
InkRelay scores 84 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 4 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. 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 InkRelay MCP server expose?
InkRelay exposes 17 tools: whoami, list_computers, list_printers, get_printer, update_printer, and 12 more. Their descriptions and schemas cost roughly 1,369 tokens of context every time the server is loaded.
Is the InkRelay MCP server still maintained?
InkRelay 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.
What licence is the InkRelay MCP server under?
InkRelay declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.