FastBill MCP by usefulapi
REMOTE · FASTBILL.USEFULAPI.IO
Read FastBill customers, invoices, estimates, expenses; create customers, invoices, projects.
Available components
Last scanned (4 hours ago)
Scores higher than 4% of remote servers
Reachable. Last reached 6 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 Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven. View diagnostics → Unverified
- 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 & Reachability0
- Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability0
- Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
- Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
- Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified
Unverified: 5 categories
Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
Checks we ran (4)
- TLS certificate
- HSTS header
- DNSSEC
- Transport
Checks we could not complete (7)
These are gaps on our side, not findings about this hosted endpoint. We only credit what we can confirm, so a category made up entirely of them scores 0.
- Authorization in Endpoint SecurityAuthorisation not yet verified: we couldn't confirm whether this endpoint requires it.
- HTTPS in Endpoint SecurityHTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven.
- Schema quality in Schema Quality & AI Usability (scores 0 for this)Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.
- Stability in Stability & Change Management (scores 0 for this)Stability not yet verified: not enough scan history yet (needs a 30-day window).
- Tool coverage in Tool Coverage (scores 0 for this)Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- Tool safety in Tool Safety (scores 0 for this)Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- Capabilities in Capabilities (scores 0 for this)Capabilities not yet verified: we couldn't read the endpoint's capabilities.
Does not apply to this hosted endpoint (2)
- Supply Chain SecurityScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
- Provenance & TransparencyScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
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.
- 6 Nov 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 1 Nov 26 −47
- Endpoint reachability: reachable → not serving MCP ▼ security
- Tool safety: pass → unverified ▼ security
- Authorization: pass → unverified ▼ security
- Stability: 0.17 → unverified ▼ security
- Schema quality: 100 → unverified ▼ functional
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- 31 Oct 26 +3
- Authorization: partial → pass ▲ security
- MCP protocol: fail → pass ▲ functional
- New prompt “draft_an_invoice_from_a_job” functional
- New prompt “finalize_a_checked_draft” functional
- New prompt “find_overdue_invoices_and_who_owes_them” functional
- New prompt “log_billable_time_on_a_project” functional
- New prompt “record_a_payment” functional
- New prompt “review_last_month_s_expenses_and_revenue” functional
- MCP protocol version: 2025-06-18 → 2025-11-25 functional
- Server version: 1.7.0 → 1.9.0 functional
- Server version: 1.6.0 → 1.7.0 functional
- Server version: 1.5.2 → 1.6.0 functional
- 30 Oct 26 +1
- Server version: 1.5.1 → 1.5.2 functional
- Server version: 1.5.0 → 1.5.1 functional
- 29 Oct 26 0
- Server version: 1.4.0 → 1.5.0 functional
- Server version: 1.3.0 → 1.4.0 functional
- 28 Oct 26 +1
- Server version: 1.1.0 → 1.3.0 functional
- 27 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- Server version: 1.0.0 → 1.1.0 functional
- 26 Oct 26 60
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 6 Nov 2026 · Probed https://fastbill.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| 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 fastbill.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | Trust anchor | 20326, 38696 | 8, 8 | Verified |
| io. | DS published | 38690 | 8 | Verified |
| usefulapi.io. | No DS | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Inconclusive
We could not reach the endpoint well enough to judge its authorisation posture.
| Result | Inconclusive |
|---|---|
| HTTP status | 302 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://fastbill.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/fastbill/ |
| http (plaintext) | http://fastbill.usefulapi.io/mcp | Inconclusive | 302 | http://fastbill.usefulapi.io/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 →
fastbill_complete_invoice Finalize invoice ~89
WRITE, NOT REVERSIBLE: turn a draft invoice into a final invoice. FastBill assigns the invoice number and PDF; a final invoice can no longer be edited (it can only be canceled in FastBill). Nothing is sent to the customer. Only call this after the user confirmed the draft. invoice.complete.
| Name | Type | Req | Description |
|---|---|---|---|
| invoice_id | integer | yes | FastBill id of the DRAFT invoice. |
No output schema declared.
No examples provided.
fastbill_create_article Create product ~116
WRITE: create a product or service (article number, title and unit price are required). article.create.
| Name | Type | Req | Description |
|---|---|---|---|
| article_number | string | yes | Unique article number. |
| currency_code | string | – | – |
| description | string | – | – |
| is_gross | boolean | – | True when unit_price is gross. |
| tags | string | – | – |
| title | string | yes | – |
| type | string | – | – |
| unit | string | – | – |
| unit_price | number | yes | – |
| vat_percent | number | – | – |
No output schema declared.
No examples provided.
fastbill_create_customer Create customer ~321
WRITE: create a customer. customer_type is required; a business needs organization, a consumer needs last_name. Bank details are not accepted by this tool. FastBill does not check for duplicates, so search with fastbill_list_customers first. customer.create.
| Name | Type | Req | Description |
|---|---|---|---|
| academic_degree | string | – | – |
| address | string | – | – |
| address_2 | string | – | – |
| city | string | – | – |
| country_code | string | – | ISO 3166 alpha-2, e.g. DE. |
| currency_code | string | – | – |
| customer_number | string | – | Own customer number (FastBill assigns one if omitted). |
| customer_type | string | yes | business or consumer. |
| days_for_payment | integer | – | Days until payment is due (stored with payment_type 1 only). |
| string | – | – | |
| first_name | string | – | – |
| last_name | string | – | Required for a consumer. |
| mobile | string | – | – |
| organization | string | – | Company name (required for a business customer). |
| payment_type | integer | – | 1 transfer, 3 cash, 4 PayPal, 5 advance payment, 6 credit card (direct debit needs bank details: set it in FastBill). |
| phone | string | – | – |
| position | string | – | – |
| salutation | string | – | – |
| tags | string | – | Comma-separated tags. |
| vat_id | string | – | VAT identification number. |
| website | string | – | – |
| zipcode | string | – | – |
No output schema declared.
No examples provided.
fastbill_create_estimate Create estimate ~144
WRITE: create an estimate (quote) for a customer from line items. It is not sent. estimate.create.
| Name | Type | Req | Description |
|---|---|---|---|
| currency_code | string | – | – |
| customer_id | integer | yes | FastBill customer id (see fastbill_list_customers). |
| discount_percent | number | – | Document discount in percent. |
| estimate_date | string | – | A date, yyyy-mm-dd. |
| introtext | string | – | Introduction text above the items. |
| is_gross | boolean | – | True when unit_price values are gross. |
| items | array | yes | Line items (1-100). |
| template_id | integer | – | Template id from fastbill_list_templates. |
No output schema declared.
No examples provided.
fastbill_create_invoice Create invoice ~275
WRITE: create an invoice for a customer from line items. FastBill stores it as a draft; it gets its number and becomes final only with fastbill_complete_invoice, and it is never sent by this tool. Check the result with fastbill_get_invoice. invoice.create.
| Name | Type | Req | Description |
|---|---|---|---|
| cash_discount_days | integer | – | – |
| cash_discount_percent | number | – | – |
| contract_reference | string | – | – |
| currency_code | string | – | – |
| customer_id | integer | yes | FastBill customer id (see fastbill_list_customers). |
| customer_order_reference | string | – | – |
| delivery_date | string | – | A date, yyyy-mm-dd. |
| discount_percent | number | – | Document discount in percent. |
| introtext | string | – | Introduction text above the items. |
| invoice_date | string | – | A date, yyyy-mm-dd. |
| invoice_title | string | – | – |
| is_gross | boolean | – | True when unit_price values are gross. |
| items | array | yes | Line items (1-100). |
| service_period_end | string | – | A date, yyyy-mm-dd. |
| service_period_start | string | – | A date, yyyy-mm-dd. |
| template_id | integer | – | Template id from fastbill_list_templates. |
| vat_case | string | – | VAT case (default standard). |
No output schema declared.
No examples provided.
fastbill_create_project Create project ~103
WRITE: create a project for a customer (name and customer are required). project.create.
| Name | Type | Req | Description |
|---|---|---|---|
| currency_code | string | – | – |
| customer_id | integer | yes | FastBill customer id. |
| end_date | string | – | A date, yyyy-mm-dd. |
| hour_price | number | – | Hourly rate. |
| project_name | string | yes | – |
| start_date | string | – | A date, yyyy-mm-dd. |
| vat_percent | number | – | – |
No output schema declared.
No examples provided.
fastbill_create_time_entry Create time entry ~148
WRITE: book a work time entry on a project (customer, project and start time are required). time.create.
| Name | Type | Req | Description |
|---|---|---|---|
| article_id | integer | – | The service (article id) of the entry. |
| billable_minutes | integer | – | – |
| comment | string | – | – |
| customer_id | integer | yes | – |
| date | string | – | A date, yyyy-mm-dd. |
| end_time | string | – | Date and time, YYYY-MM-DD hh:mm:ss. |
| minutes | integer | – | Duration in minutes (not calculated from the times). |
| project_id | integer | yes | – |
| start_time | string | yes | Date and time, YYYY-MM-DD hh:mm:ss. |
No output schema declared.
No examples provided.
fastbill_get_customer Get customer ~36
One customer by FastBill customer id. customer.get with CUSTOMER_ID.
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | integer | yes | FastBill customer id. |
No output schema declared.
No examples provided.
fastbill_get_invoice Get invoice ~50
One invoice by FastBill invoice id, with all line items, VAT, payments and the document URL. invoice.get with INVOICE_ID.
| Name | Type | Req | Description |
|---|---|---|---|
| invoice_id | integer | yes | FastBill invoice id. |
No output schema declared.
No examples provided.
fastbill_list_articles List products ~106
List products and services (article number, type, title, unit price, VAT, unit). article.get.
| Name | Type | Req | Description |
|---|---|---|---|
| article_id | integer | – | – |
| article_number | string | – | – |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
No output schema declared.
No examples provided.
fastbill_list_contacts List contacts ~153
List contact persons of customers (name, position, e-mail, phone). Filter by customer, search term or contact id. contact.get.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | – | One contact id. |
| customer_id | integer | – | Only contacts of this customer id. |
| customer_number | string | – | – |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| term | string | – | Search term matched against organization, name, address, zip code, e-mail and tags. |
No output schema declared.
No examples provided.
fastbill_list_customers List customers ~188
List customers (name, address, e-mail, VAT id, payment terms and bank details as stored in FastBill). Filter by search term (organization, name, address, zip, e-mail or tags), customer number, country or city. customer.get.
| Name | Type | Req | Description |
|---|---|---|---|
| city | string | – | – |
| country_code | string | – | ISO 3166 alpha-2 country code, e.g. DE. |
| customer_number | string | – | Exact customer number. |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| term | string | – | Search term matched against organization, first/last name, address, zip code, e-mail and tags. |
No output schema declared.
No examples provided.
fastbill_list_estimates List estimates ~155
List estimates (quotes) with state (a created, b sent, c negotiation, d accepted, e rejected, f invoiced), totals and items. estimate.get.
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | integer | – | – |
| end_date | string | – | A date, yyyy-mm-dd. |
| estimate_id | integer | – | – |
| estimate_number | string | – | – |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| start_date | string | – | A date, yyyy-mm-dd. |
No output schema declared.
No examples provided.
fastbill_list_expenses List expenses ~173
List expense entries (supplier, category, net/VAT/gross, dates, document URL). Filter by invoice number or date ranges. expense.get.
| Name | Type | Req | Description |
|---|---|---|---|
| end_date | string | – | A date, yyyy-mm-dd. |
| end_paid_date | string | – | A date, yyyy-mm-dd. |
| invoice_id | integer | – | – |
| invoice_number | string | – | – |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| start_date | string | – | A date, yyyy-mm-dd. |
| start_paid_date | string | – | A date, yyyy-mm-dd. |
No output schema declared.
No examples provided.
fastbill_list_invoices List invoices ~278
List outgoing invoices, drafts and credit notes with totals, state (draft, unpaid, overdue, paid, canceled), dates and line items. Filter by customer, number, type, date ranges (invoice date, due date, paid date, last update). invoice.get.
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | integer | – | – |
| end_date | string | – | Invoices dated up to this day. |
| end_due_date | string | – | A date, yyyy-mm-dd. |
| end_lastupdate | string | – | A date, yyyy-mm-dd. |
| end_paid_date | string | – | A date, yyyy-mm-dd. |
| invoice_number | string | – | – |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| start_date | string | – | Invoices dated on or after this day. |
| start_due_date | string | – | A date, yyyy-mm-dd. |
| start_lastupdate | string | – | Changed on or after this day. |
| start_paid_date | string | – | A date, yyyy-mm-dd. |
| type | string | – | outgoing = finalized invoice, draft, credit = credit note. |
No output schema declared.
No examples provided.
fastbill_list_projects List projects ~103
List projects (name, customer, hourly rate, VAT, start/end date). project.get.
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | integer | – | – |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| project_id | integer | – | – |
No output schema declared.
No examples provided.
fastbill_list_recurring_invoices List recurring invoices ~100
List recurring invoice templates (customer, interval data, totals, items). recurring.get.
| Name | Type | Req | Description |
|---|---|---|---|
| invoice_id | integer | – | One recurring invoice id. |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
No output schema declared.
No examples provided.
fastbill_list_revenues List revenues ~171
List revenue entries (income booked in FastBill: customer, totals, dates, payments). Takes the same filters as invoices. revenue.get.
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | integer | – | – |
| end_date | string | – | A date, yyyy-mm-dd. |
| end_paid_date | string | – | A date, yyyy-mm-dd. |
| invoice_number | string | – | – |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| start_date | string | – | A date, yyyy-mm-dd. |
| start_paid_date | string | – | A date, yyyy-mm-dd. |
No output schema declared.
No examples provided.
fastbill_list_templates List document templates ~103
List the invoice/estimate templates (template id, name, hash). Use a template id with the create tools. Ids change whenever a template is edited. template.get.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
No output schema declared.
No examples provided.
fastbill_list_time_entries List time entries ~167
List work time entries (customer, project, date, minutes, billable minutes, comment, invoice). Without filters FastBill returns the latest entries of the current month. time.get.
| Name | Type | Req | Description |
|---|---|---|---|
| customer_id | integer | – | – |
| date | string | – | One day. |
| end_date | string | – | A date, yyyy-mm-dd. |
| limit | integer | – | Results per call, 1-100 (default 25). Every call counts against FastBill's hourly API quota. |
| offset | integer | – | Index of the first result, from 0 (default 0). Pass the previous reply's next_offset. |
| project_id | integer | – | – |
| start_date | string | – | A date, yyyy-mm-dd. |
| time_id | integer | – | – |
No output schema declared.
No examples provided.
fastbill_set_invoice_paid Mark invoice paid ~81
WRITE: mark a final invoice as paid, with the payment date and method. invoice.setpaid.
| Name | Type | Req | Description |
|---|---|---|---|
| invoice_id | integer | yes | FastBill invoice id. |
| paid_date | string | – | Date the payment arrived (default: FastBill's choice, today). |
| payment_method | string | – | e.g. paypal, cash, bank name. |
No output schema declared.
No examples provided.
fastbill_update_customer Update customer ~306
WRITE: update fields of an existing customer; only the fields you pass change. Bank details are not accepted by this tool. customer.update.
| Name | Type | Req | Description |
|---|---|---|---|
| academic_degree | string | – | – |
| address | string | – | – |
| address_2 | string | – | – |
| city | string | – | – |
| country_code | string | – | ISO 3166 alpha-2, e.g. DE. |
| currency_code | string | – | – |
| customer_id | integer | yes | FastBill customer id. |
| customer_number | string | – | Own customer number (FastBill assigns one if omitted). |
| customer_type | string | – | – |
| days_for_payment | integer | – | Days until payment is due (stored with payment_type 1 only). |
| string | – | – | |
| first_name | string | – | – |
| last_name | string | – | Required for a consumer. |
| mobile | string | – | – |
| organization | string | – | Company name (required for a business customer). |
| payment_type | integer | – | 1 transfer, 3 cash, 4 PayPal, 5 advance payment, 6 credit card (direct debit needs bank details: set it in FastBill). |
| phone | string | – | – |
| position | string | – | – |
| salutation | string | – | – |
| tags | string | – | Comma-separated tags. |
| vat_id | string | – | VAT identification number. |
| website | string | – | – |
| zipcode | string | – | – |
No output schema declared.
No examples provided.
How do I install the FastBill MCP by usefulapi server?
FastBill MCP by usefulapi is a hosted endpoint at https://fastbill.usefulapi.io/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 · fastbill.usefulapi.io
claude mcp add --transport http io-usefulapi-fastbill 'https://fastbill.usefulapi.io/mcp'
What is the FastBill MCP by usefulapi server?
FastBill MCP by usefulapi is listed in the public MCP registry as io.usefulapi/fastbill. Read FastBill customers, invoices, estimates, expenses; create customers, invoices, projects. This page covers its hosted endpoint (https://fastbill.usefulapi.io/mcp).
Is the FastBill MCP by usefulapi server safe to use?
FastBill MCP by usefulapi scores 18 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 FastBill MCP by usefulapi server expose?
FastBill MCP by usefulapi exposes 22 tools: fastbill_list_customers, fastbill_get_customer, fastbill_list_contacts, fastbill_list_invoices, fastbill_get_invoice, and 17 more. Their descriptions and schemas cost roughly 3,366 tokens of context every time the server is loaded.
Does the FastBill MCP by usefulapi server require authentication?
Its publisher declares no required credentials for FastBill MCP by usefulapi. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.
Is the FastBill MCP by usefulapi server still maintained?
FastBill MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 6 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What did VerifyMCP test on the FastBill MCP by usefulapi server?
VerifyMCP ran 4 checks on FastBill MCP by usefulapi, covering TLS certificate, HSTS header, DNSSEC and Transport. 7 items could not be completed, a gap on our side rather than a finding about FastBill MCP by usefulapi: Authorization, HTTPS, Schema quality, Stability and 3 more. 5 categories score 0 for that reason, because we only credit what we can confirm. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.