Invoice by Ouroboros Apps
REMOTE · INVOICE-CONTINUITY2.VERCEL.APP
Freelance invoice line items, rates, due dates, and late terms for AI assistants
Available components
Last scanned (6 hours ago)
Scores higher than 98% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
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 Security94
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability70
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1267 tokens (~97/item across 13 items; 13 tools + 0 resources), lean.Pass
- 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 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 13 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 14 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.
- 4 Nov 26 +1
- Stability: 0.97 → pass security
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 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 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 24 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Oct 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.
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://invoice-continuity2.vercel.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=*.vercel.app | CN=WR1,O=Google Trust Services,C=US | 31 Oct 2026 | 29 Jan 2027 | RSA 2048 | SHA256-RSA | 9c5f0e6a35c955e113044c86848e4cd5 |
| SANs: *.vercel.app | ||||||
| CN=WR1,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 | 7fd9e2c2d2048a0474b627a26d0868a7 |
| 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 invoice-continuity2.vercel.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| vercel.app. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer resource_metadata="https://invoice-continuity2.vercel.app/.well-known/oauth-protected-resource/mcp"
Bearer resource_metadata="https://invoice-continuity2.vercel.app/.well-known/oauth-protected-resource/mcp"| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000; includeSubDomains; preload |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | no-referrer |
Protected resource metadata
| Document | https://invoice-continuity2.vercel.app/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://invoice-continuity2.vercel.app/mcp |
| Authorisation server | https://amwewpcjebyjftgomupf.supabase.co/auth/v1 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://invoice-continuity2.vercel.app/mcp | Verified | 200 | |
| http (plaintext) | http://invoice-continuity2.vercel.app/mcp | HTTPS enforced | 308 | https://invoice-continuity2.vercel.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 →
accept_invoice_change accept invoice change ~85
Apply one suggested invoice change after the freelancer explicitly approves that change. Pass confirmed true only then. This is the path that may add a line, change a rate, apply a discount, or move the due date. Calling it is not a substitute for the freelancer's approval.
| Name | Type | Req | Description |
|---|---|---|---|
| changeId | – | yes | – |
| confirmed | boolean | yes | – |
| invoiceId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
begin_invoice begin invoice ~74
Start a draft invoice. Draft figures are not an approved commitment until seal_invoice. Currency is a three-letter code. Amounts later are minor units of that currency and are the freelancer's figures.
| Name | Type | Req | Description |
|---|---|---|---|
| clientName | string | yes | – |
| currency | string | yes | – |
| number | string | yes | – |
| title | – | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
describe_line describe line ~62
Correct a line description while the invoice is still a draft. After approval, a different description is refused. Use suggest_invoice_change with add_line for a different line.
| Name | Type | Req | Description |
|---|---|---|---|
| description | string | yes | – |
| invoiceId | string | yes | – |
| lineId | – | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
list_invoices list invoices ~38
List the signed-in freelancer's invoices. Use a returned id with read_invoice. Do not guess an invoice.
| Name | Type | Req | Description |
|---|---|---|---|
| offset | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
offer_discount offer discount ~105
Record a discount the freelancer is putting on the invoice. kind none uses value 0. kind percent takes a whole number from 1 to 100. kind fixed takes a whole number of minor units. After the invoice is sealed, a different discount is refused until accept_invoice_change applies an apply_discount suggestion. Do not invent a discount.
| Name | Type | Req | Description |
|---|---|---|---|
| invoiceId | string | yes | – |
| kind | string | yes | – |
| note | string | yes | – |
| value | integer | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
place_line place line ~89
Add one line: description, quantity, rate in whole minor units, and unit hour, each, or day. After the invoice is sealed, a new line is refused until accept_invoice_change applies an add_line suggestion.
| Name | Type | Req | Description |
|---|---|---|---|
| description | string | yes | – |
| invoiceId | string | yes | – |
| quantity | integer | yes | – |
| rateMinor | integer | yes | – |
| unit | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
quote_line_rate quote line rate ~73
Set the rate already chosen for one line, as a whole number of minor units in the invoice currency. After the invoice is sealed, a different rate is refused until accept_invoice_change applies a change_rate suggestion.
| Name | Type | Req | Description |
|---|---|---|---|
| invoiceId | string | yes | – |
| lineId | – | yes | – |
| rateMinor | integer | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
read_invoice read invoice ~57
Read the invoice before answering. Quote only this record. Draft status is not an approved commitment. Proposed changes do not authorize a new line, a different rate, a discount, or a new due date.
| Name | Type | Req | Description |
|---|---|---|---|
| invoiceId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
seal_invoice seal invoice ~62
Mark the current draft as the approved invoice. Pass confirmed true only after the freelancer explicitly approves the lines, quantities, rates, due date, late terms, and any discount already on the draft.
| Name | Type | Req | Description |
|---|---|---|---|
| confirmed | boolean | yes | – |
| invoiceId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
set_invoice_due set invoice due ~61
Set the due date as a calendar day in YYYY-MM-DD form. After the invoice is sealed, a different date is refused until accept_invoice_change applies a move_due_date suggestion.
| Name | Type | Req | Description |
|---|---|---|---|
| dueOn | string | yes | – |
| invoiceId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
set_line_quantity set line quantity ~58
Set the quantity on one line. After the invoice is sealed, a different quantity is refused until accept_invoice_change applies an adjust_quantity suggestion.
| Name | Type | Req | Description |
|---|---|---|---|
| invoiceId | string | yes | – |
| lineId | – | yes | – |
| quantity | integer | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
suggest_invoice_change suggest invoice change ~223
Record a suggested change. This does not change the invoice. kind add_line requires description, quantity, rateMinor, and unit. kind change_rate requires lineId and rateMinor. kind apply_discount requires discountKind, discountValue, and discountNote. kind move_due_date requires dueOn. kind adjust_quantity requires lineId and quantity. kind revise_late_terms requires graceDays, lateBasis, feeMinor, latePercent, and lateNote.
| Name | Type | Req | Description |
|---|---|---|---|
| description | string | – | – |
| discountKind | string | – | – |
| discountNote | – | – | – |
| discountValue | integer | – | – |
| dueOn | string | – | – |
| feeMinor | integer | – | – |
| graceDays | integer | – | – |
| invoiceId | string | yes | – |
| kind | string | yes | – |
| lateBasis | string | – | – |
| lateNote | – | – | – |
| latePercent | integer | – | – |
| lineId | – | – | – |
| quantity | integer | – | – |
| rateMinor | integer | – | – |
| summary | string | yes | – |
| unit | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
write_late_terms write late terms ~124
Record late terms: grace days, and a basis of none, flat_fee, or percent_per_period. flat_fee uses feeMinor and a percent of 0. percent_per_period uses percent and a fee of 0. After approval, a different basis, grace, fee, or percent is refused until an accepted revise_late_terms suggestion.
| Name | Type | Req | Description |
|---|---|---|---|
| basis | string | yes | – |
| feeMinor | integer | yes | – |
| graceDays | integer | yes | – |
| invoiceId | string | yes | – |
| note | string | yes | – |
| percent | integer | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| data | – | – | – |
No examples provided.
How do I install the Invoice by Ouroboros Apps MCP server?
Invoice by Ouroboros Apps is a hosted endpoint at https://invoice-continuity2.vercel.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 · invoice-continuity2.vercel.app
claude mcp add --transport http lahutchins91-invoice 'https://invoice-continuity2.vercel.app/mcp'
What is the Invoice by Ouroboros Apps MCP server?
Invoice by Ouroboros Apps is an MCP server listed in the public MCP registry as io.github.LAHutchins91/invoice. Freelance invoice line items, rates, due dates, and late terms for AI assistants. This page covers its hosted endpoint (https://invoice-continuity2.vercel.app/mcp).
Is the Invoice by Ouroboros Apps MCP server safe to use?
Invoice by Ouroboros Apps scores 90 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 Invoice by Ouroboros Apps MCP server expose?
Invoice by Ouroboros Apps exposes 13 tools: list_invoices, begin_invoice, read_invoice, place_line, describe_line, and 8 more. Their descriptions and schemas cost roughly 1,111 tokens of context every time the server is loaded.
Does the Invoice by Ouroboros Apps MCP server require authentication?
Yes. Invoice by Ouroboros Apps asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the Invoice by Ouroboros Apps MCP server still maintained?
Invoice by Ouroboros Apps 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.