io.github.chrischall/groupon-mcp
NPM · GROUPON-MCP
Groupon deals for Claude — search and browse local, goods, and travel deals
Available components
Last scanned (11 hours ago)
Scores higher than 97% of npm servers
Category E-commerce
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 Security100
- 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
- 0 of 9 dependencies flagged as unhealthy. View diagnostics → Pass
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to chrischall/groupon-mcp). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 0 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability71
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1140 tokens (~162/item across 7 items; 7 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
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 7 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
Checks we ran (16)
- Malware scan
- Known CVEs
- Install scripts
- Dependency health
- Source repository
- Provenance
- License
- Maintenance
- Security disclosure
- Schema quality
- Stability
- Tool coverage
- Injection markers
- Destructive annotations
- Judged manipulation
- MCP protocol
Does not apply to this package (2)
- Endpoint SecurityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
- Transport & ReachabilityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
The score does not measure everything. What the score does not measure →
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.
- 4 Nov 26 0
- Stability: pass → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- Package version: 1.1.10 → 1.2.0 functional
- 28 Oct 26 +26
- Malware scan: unverified → pass ▲ security
- Known CVEs: unverified → pass ▲ security
- Dependency health: unverified → 1.00 ▲ functional
- 27 Oct 26 −26
- Malware scan: pass → unverified ▼ security
- Known CVEs: pass → unverified ▼ security
- Dependency health: 1.00 → unverified ▼ functional
- Package version: 1.1.9 → 1.1.10 functional
- 18 Oct 26 +15
- Malware scan: unverified → pass ▲ security
- 17 Oct 26 −11
- Malware scan: pass → unverified ▼ security
- Known CVEs: partial → pass ▲ security
- Stability: 0.93 → pass security
- Dependency health: partial → 1.00 functional
- Package version: 1.1.8 → 1.1.9 functional
- 16 Oct 26 −4
- Stability: pass → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Known CVEs: pass → partial ▼ security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- Dependency health: 1.00 → partial functional
- Stability: pass → 0.93 functional
- Package version: 1.1.7 → 1.1.8 functional
- 14 Oct 26 +45
- Injection markers: unverified → pass ▲ security
- Stability: unverified → pass ▲ security
- Tool coverage: unverified → 100 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Destructive annotations: All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation. functional
- 13 Oct 26 0
- Security disclosure: unverified → fail ▼ 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 · Analysed npm/groupon-mcp@1.2.0
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 | chrischall/groupon-mcp |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/chrischall/groupon-mcp/.github/workflows/release-please.yml@refs/heads/main |
| Rekor log index | 3691301475 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:f421065deee43f5f9ef04ed0a92dc86971aa555e51c0214d5ed66e555e5a04343d008f3e2b6f1ff4c31ea61e576d2c41b33c3694d64dcd3d46c2666ee |
Background: How many MCP packages publish verified provenance →
Dependencies 9 packages
| Packages resolved | 9 |
|---|---|
| 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 →
groupon_clear_cart ~205
Remove ALL items from your signed-in Groupon cart. Once confirmed it removes every line item and re-reads the cart to verify it is empty. Asks the user to confirm first: a confirmation prompt where the client supports one; otherwise the first call returns a preview and a confirmToken, and only a repeat call with that token proceeds (see MCP_CONFIRM_MODE).
| Name | Type | Req | Description |
|---|---|---|---|
| confirmToken | string | – | ONLY for the two-step confirmation fallback (a client without MCP elicitation). The confirmToken from this same tool's phase-1 "confirmation-required" response, passed back ONLY after the user has se… |
| expectedOptionIds | array | – | The optionIds the preview listed. When given, the clear is refused if the cart's line items are no longer exactly these (in any order). |
No output schema declared.
No examples provided.
groupon_get_deal ~181
Fetch a single Groupon deal by its permalink slug (or full deal URL). Returns the slim projection by default (title, subtitle, merchant, price, rating, division, url, and every option's id/title/price/isSoldOut — pass an option id to groupon_purchase); set view="full" for Groupon's whole record.
| Name | Type | Req | Description |
|---|---|---|---|
| dealId | string | yes | Deal permalink slug (e.g. "enset-productions-and-ventures-3") OR a full Groupon deal URL — the last path segment is used. |
| optionId | string | – | Optional deal option id to focus on. |
| view | string | – | Response shape: "compact" (default) drops fields the response already carries elsewhere; "full" returns every field this server understands. compact returns the slim projection; "full" returns Groupo… |
No output schema declared.
No examples provided.
groupon_healthcheck Verify credentials and upstream reachability ~104
Resolves the credential the way real tools do, then makes one authenticated request to www.groupon.com. Reports which source supplied the credential, whether www.groupon.com accepted it, the round-trip time, and a plain-English hint distinguishing 'no credential' from 'credential rejected' from 'a www.groupon.com-side problem'. Read-only; never returns the credential itself. Call this when a real tool fails and you want to know which hop broke.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
groupon_list_categories ~90
Fetch Groupon's category taxonomy tree. Returns a slim {title, url, children} tree by default; set view="full" for Groupon's whole payload.
| Name | Type | Req | Description |
|---|---|---|---|
| view | string | – | Response shape: "compact" (default) drops fields the response already carries elsewhere; "full" returns every field this server understands. compact returns the slim projection; "full" returns Groupo… |
No output schema declared.
No examples provided.
groupon_purchase ~314
Add a Groupon deal option to your cart, ready for checkout. Once confirmed it adds the item, re-reads the cart to verify the line quantity, and returns the checkout URL for YOU to complete payment. It CANNOT place the order — Groupon checkout is native Apple/Google Pay, card, or PayPal. Asks the user to confirm first: a confirmation prompt where the client supports one; otherwise the first call returns a preview and a confirmToken, and only a repeat call with that token proceeds (see MCP_CONFIRM_MODE).
| Name | Type | Req | Description |
|---|---|---|---|
| confirmToken | string | – | ONLY for the two-step confirmation fallback (a client without MCP elicitation). The confirmToken from this same tool's phase-1 "confirmation-required" response, passed back ONLY after the user has se… |
| dealId | string | yes | Deal permalink slug (e.g. "versailles-massage-bar-1") OR a full Groupon deal URL — the last path segment is used. |
| isGift | boolean | – | Mark the line item as a gift. |
| optionId | string | – | Which deal option to buy (an option id from groupon_get_deal). Required when the deal has more than one option; may be omitted for a single-option deal. |
| quantity | integer | – | How many to add (1-10, default 1). |
No output schema declared.
No examples provided.
groupon_search_deals ~203
Search or browse Groupon deals for a city (division). Pass `query` for a free-text search (e.g. "massage", "pizza"); omit it for a plain category/city browse. Returns slim deal summaries by default; set view="full" for Groupon's whole cards.
| Name | Type | Req | Description |
|---|---|---|---|
| division | string | – | Groupon city slug, e.g. new-york, chicago, syracuse. |
| limit | integer | – | Maximum number of deals to return (1-100). |
| offset | integer | – | Number of deals to skip for pagination (0-based). |
| query | string | – | Free-text search term (e.g. "massage", "pizza"). Omit for a plain category/city browse. |
| view | string | – | Response shape: "compact" (default) drops fields the response already carries elsewhere; "full" returns every field this server understands. compact returns the slim projection; "full" returns Groupo… |
No output schema declared.
No examples provided.
groupon_view_cart ~43
View the items currently in your signed-in Groupon cart. Requires a Groupon session (GROUPON_SESSION_COOKIE, or the fetchproxy browser bridge signed into groupon.com).
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the io.github.chrischall/groupon-mcp server?
io.github.chrischall/groupon-mcp runs locally as an npm package, launched with npx -y groupon-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 · groupon-mcp
claude mcp add chrischall-groupon-mcp -- npx -y groupon-mcp
What is the io.github.chrischall/groupon-mcp server?
io.github.chrischall/groupon-mcp is listed in the public MCP registry as io.github.chrischall/groupon-mcp. Groupon deals for Claude, search and browse local, goods, and travel deals. This page covers its npm package (groupon-mcp).
Is the io.github.chrischall/groupon-mcp server safe to use?
io.github.chrischall/groupon-mcp scores 94 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 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 io.github.chrischall/groupon-mcp server expose?
io.github.chrischall/groupon-mcp exposes 7 tools: groupon_healthcheck, groupon_search_deals, groupon_get_deal, groupon_list_categories, groupon_view_cart, and 2 more. Their descriptions and schemas cost roughly 1,140 tokens of context every time the server is loaded.
Is the io.github.chrischall/groupon-mcp server still maintained?
io.github.chrischall/groupon-mcp 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.
What licence is the io.github.chrischall/groupon-mcp server under?
io.github.chrischall/groupon-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.
What did VerifyMCP test on the io.github.chrischall/groupon-mcp server?
VerifyMCP ran 16 checks on io.github.chrischall/groupon-mcp, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.