inv.bg MCP by usefulapi
REMOTE · INV-BG.USEFULAPI.IO
Read inv.bg invoices, clients, items, payments and banking; create clients, items, invoices.
Available components
Last scanned (1 hour ago)
Scores higher than 4% 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 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.
- 2 Nov 26 −49
- Endpoint reachability: reachable → not serving MCP ▼ security
- Stability: 0.23 → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Authorization: pass → 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 “add_or_update_a_client_or_add_an_item” functional
- New prompt “create_a_draft_invoice_for_a_client” functional
- New prompt “email_an_invoice_or_record_a_payment” functional
- New prompt “find_bank_transactions_not_linked_to_an_invoice” functional
- New prompt “find_unpaid_invoices_oldest_first” functional
- New prompt “see_everything_invoiced_to_a_client” functional
- MCP protocol version: 2025-06-18 → 2025-11-25 functional
- Server version: 1.10.0 → 1.12.0 functional
- Server version: 1.9.0 → 1.10.0 functional
- Server version: 1.8.2 → 1.9.0 functional
- 30 Oct 26 +1
- Server version: 1.8.1 → 1.8.2 functional
- Server version: 1.8.0 → 1.8.1 functional
- 29 Oct 26 0
- Server version: 1.7.0 → 1.8.0 functional
- Server version: 1.6.0 → 1.7.0 functional
- 28 Oct 26 +1
- Server version: 1.4.0 → 1.6.0 functional
- 27 Oct 26 0
- Server version: 1.3.0 → 1.4.0 functional
- 26 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 25 Oct 26 61
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://inv-bg.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 inv-bg.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://inv-bg.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/inv-bg/ |
| http (plaintext) | http://inv-bg.usefulapi.io/mcp | Inconclusive | 302 | http://inv-bg.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 →
invbg_create_client Create client ~196
WRITE: add a company client (name, Bulstat, VAT, address, MOL). Check invbg_list_clients first to avoid a duplicate. For an individual (EGN) issue the document with invbg_create_invoice and is_to_person instead. POST /clients.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | – |
| bulstat | string | yes | EIK/Bulstat of the company. |
| code | string | – | Your own unique client code. |
| country | string | – | Country name or code as inv.bg stores it, e.g. BG. |
| delivery_address | string | – | – |
| is_reg_vat | boolean | – | Whether the company is VAT-registered (default false). |
| mol | string | – | Accountable person (MOL). |
| name | string | yes | Company name. |
| town | string | – | – |
| vat_number | string | – | VAT number; required when is_reg_vat is true. |
No output schema declared.
No examples provided.
invbg_create_invoice Create invoice ~673
WRITE: create a document (tax invoice by default; proforma, debit/credit note via type). It is saved as a DRAFT unless draft is false: an issued document takes the next legal number and cannot be undone through this tool. Address it to an existing client_id, or give to_name + to_address (+ to_mol and to_bulstat for a company, to_egn for a person) and inv.bg matches or creates the client from those details (an existing client matched by Bulstat or VAT number is UPDATED with the address, MOL and other details you pass). VAT: set vat_percent on the document, or on every item. POST /invoices.
| Name | Type | Req | Description |
|---|---|---|---|
| client_id | integer | – | Existing client id (invbg_list_clients). Then the to_* fields are ignored. |
| currency | string | – | Document currency (default BGN). |
| currency_rate | number | – | Exchange rate to BGN (BGN/XXX). Required when currency is not BGN: take it from invbg_get_exchange_rate. |
| date_create | string | – | Issue date (default now). |
| date_event | string | – | Tax event date (default: issue date). |
| date_mature | string | – | Due date. |
| draft | boolean | – | Save as a draft (default true). Pass false to issue the document and consume its number. |
| is_to_person | boolean | – | true when the recipient is an individual (then to_egn is needed). |
| items | array | yes | Line items. |
| items_with_vat | boolean | – | true if item prices already include VAT (default false). |
| notes | string | – | Notes printed on the document. |
| number_set | integer | – | Number set id to take the number from (invbg_list_number_sets); omit unless you use several series. |
| payment_method | string | – | How the client pays. |
| po_number | string | – | The buyer's purchase order number. |
| reduction_percent | number | – | Discount on the whole document in percent. |
| to_address | string | – | Recipient address (required when no client_id). |
| to_bulstat | string | – | Recipient EIK/Bulstat (companies). |
| to_country | string | – | Recipient country, ISO 3166-1 alpha-2. |
| to_egn | string | – | Recipient EGN, 10 digits (individuals), as text so leading zeros survive. |
| to_is_reg_vat | boolean | – | Whether the recipient company is VAT-registered. |
| to_mol | string | – | Recipient accountable person (MOL); required for companies when no client_id. |
| to_name | string | – | Recipient name (when no client_id). |
| to_town | string | – | – |
| to_vat_number | string | – | Recipient VAT number (needed when to_is_reg_vat is true). |
| type | string | – | dan = tax invoice (default), prof = proforma, deb = debit note, cred = credit note. |
| vat_exemption_reason | string | – | Why no VAT is charged (when VAT is 0); see invbg_list_vat_exemption_reasons. |
| vat_percent | number | – | VAT rate for the whole document in percent; ignored where items carry their own vat_percent. |
No output schema declared.
No examples provided.
invbg_create_item Create item ~102
WRITE: add a product or service to the catalogue (name, price, unit). POST /items.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | – | Price currency (default BGN). |
| name | string | yes | Item name. |
| name_en | string | – | Item name in English. |
| price | number | yes | Price per unit. |
| quantity_unit | string | yes | Unit of measure (invbg_list_item_units). |
| tags | array | – | Tags to attach. |
No output schema declared.
No examples provided.
invbg_get_account Get account ~33
The company (id, name, subdomain) and the user the API token belongs to. GET /account.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
invbg_get_client Get client ~87
One client by id with all stored details (names in both languages, Bulstat, VAT, address, MOL, code, custom properties). GET /clients/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| client_id | integer | yes | inv.bg client id (invbg_list_clients). |
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
No output schema declared.
No examples provided.
invbg_get_exchange_rate Get exchange rate ~80
The exchange rate of a currency to BGN on a date (default: today), as inv.bg uses it for documents. GET /currency/rates/{currency}.
| Name | Type | Req | Description |
|---|---|---|---|
| currency | string | yes | Currency, ISO 4217 code such as BGN or EUR. |
| date | string | – | Rate date, yyyy-mm-dd (default today). |
No output schema declared.
No examples provided.
invbg_get_firm Get company ~41
The issuing company's details: name, Bulstat, VAT registration and VAT number, address, MOL, contact email, custom properties. GET /firm.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
invbg_get_invoice Get invoice ~126
One document by id: number, type, issuer and recipient, line items, VAT, totals, balance_paid and balance_due, dates, bank accounts, sent/confirmation status. Optionally with its comments. GET /invoices/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| include_comments | boolean | – | Also return the document's comments. |
| invoice_id | integer | yes | inv.bg document id (the id field of invbg_list_invoices, not the printed number). |
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
No output schema declared.
No examples provided.
invbg_get_item Get item ~65
One catalogue item by id. GET /items/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| item_id | integer | yes | inv.bg item id (invbg_list_items). |
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
No output schema declared.
No examples provided.
invbg_get_next_invoice_number Get next invoice number ~58
The next free document number of the default number set for a document type. Read-only: it does not reserve the number. GET /invoices/free-number.
| Name | Type | Req | Description |
|---|---|---|---|
| type | string | – | Document type (default: tax invoice). |
No output schema declared.
No examples provided.
invbg_get_payment Get payment ~48
One payment by id with its allocations to invoices (invoice_payments). GET /payments/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| payment_id | integer | yes | inv.bg payment id (invbg_list_payments). |
No output schema declared.
No examples provided.
invbg_list_bank_accounts List bank accounts ~104
The company's bank accounts (alias, bank, IBAN, BIC, currency). GET /bank/accounts.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
No output schema declared.
No examples provided.
invbg_list_bank_transactions List bank transactions ~263
Imported bank transactions with amount, date, counterparty, and whether they are linked to a document. Useful for reconciliation (linked=false = unmatched). GET /bank/transactions.
| Name | Type | Req | Description |
|---|---|---|---|
| amount_gt | number | – | Amount of at least this value. |
| amount_lt | number | – | Amount of at most this value. |
| bank_account_id | array | – | Only these bank accounts (invbg_list_bank_accounts). |
| date_from | string | – | On or after this date, yyyy-mm-dd. |
| date_to | string | – | On or before this date, yyyy-mm-dd. |
| linked | boolean | – | true = only transactions linked to documents, false = only unlinked ones. |
| order | string | – | Sort direction (default desc). |
| order_by | string | – | Field to sort by (for example id, date or name; see the vendor reference). |
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
| search | string | – | Free-text search over the results. |
| type | string | – | deb = debit (money out), cred = credit (money in). |
No output schema declared.
No examples provided.
invbg_list_cashboxes List cashboxes ~87
The company's cash registers (cashboxes) with names and balances. GET /cashboxes.
| Name | Type | Req | Description |
|---|---|---|---|
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
| search | string | – | Free-text search over the results. |
No output schema declared.
No examples provided.
invbg_list_client_contacts List client contacts ~106
Contact people of a client (or of all clients) with their names and roles. GET /client-contacts.
| Name | Type | Req | Description |
|---|---|---|---|
| client_id | integer | – | Only the contacts of this client. |
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
| search | string | – | Free-text search over the results. |
No output schema declared.
No examples provided.
invbg_list_clients List clients ~244
List or search clients (customers): name, Bulstat, VAT number, address, MOL, whether it is a person. GET /clients.
| Name | Type | Req | Description |
|---|---|---|---|
| bulstat | string | – | Filter by EIK/Bulstat. |
| code | string | – | Filter by the client code. |
| is_person | boolean | – | true = individuals only, false = companies only. |
| is_reg_vat | boolean | – | true = VAT-registered clients only. |
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
| name | string | – | Filter by client name. |
| order | string | – | Sort direction (default desc). |
| order_by | string | – | Field to sort by (for example id, date or name; see the vendor reference). |
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
| search | string | – | Free-text search over the results. |
| vat_number | string | – | Filter by VAT number. |
No output schema declared.
No examples provided.
invbg_list_invoice_types List document types ~43
All document types of this company (tax invoice, proforma, debit/credit note and any custom types) with their codes. GET /invoices/types.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
invbg_list_invoices List invoices ~497
List documents (tax invoices, proformas, debit and credit notes) with filters: type, number, issue-date range, amount ranges, payment status, client, draft/annulled, sent status, currency. Each row has number, client, totals, balance_paid, balance_due and dates. GET /invoices.
| Name | Type | Req | Description |
|---|---|---|---|
| amount_due_gt | number | – | Only documents with an outstanding balance of at least this amount. |
| amount_due_lt | number | – | Only documents with an outstanding balance of at most this amount. |
| amount_gt | number | – | Only documents with a total of at least this amount. |
| amount_lt | number | – | Only documents with a total of at most this amount. |
| client_id | integer | – | Only documents issued to this client (invbg_list_clients). |
| client_name | string | – | Client name filter; % matches any run of characters, _ one character. |
| currency | string | – | Only documents in this currency. |
| date_from | string | – | Only documents dated on or after this date, yyyy-mm-dd. |
| date_to | string | – | Only documents dated on or before this date, yyyy-mm-dd. |
| is_annulled | boolean | – | true = only annulled documents, false = none. |
| is_draft | boolean | – | true = only drafts, false = no drafts. |
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
| number | string | – | Document number (as printed, e.g. 0000000024). |
| order | string | – | Sort direction (default desc). |
| order_by | string | – | Field to sort by (for example id, date or name; see the vendor reference). |
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
| search | string | – | Free-text search over the results. |
| send_status | array | – | Email status(es) to include. |
| status | array | – | Payment statuses to include. Use ["unpaid", "partially-paid"] to find open receivables. |
| type | array | – | Document types: dan = tax invoice, prof = proforma, deb = debit note, cred = credit note. |
No output schema declared.
No examples provided.
invbg_list_item_units List units of measure ~56
Units of measure accepted as quantity_unit on items and invoice lines. GET /items/units.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
No output schema declared.
No examples provided.
invbg_list_items List items ~163
The product/service catalogue: name, price, currency, unit, tags. GET /items.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
| order | string | – | Sort direction (default desc). |
| order_by | string | – | Field to sort by (for example id, date or name; see the vendor reference). |
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
| search | string | – | Free-text search over the results. |
| tag_name | string | – | Only items with this tag. |
No output schema declared.
No examples provided.
invbg_list_number_sets List number sets ~91
The company's invoice number sets (separate numbering series) with ids; pass an id as number_set to invbg_create_invoice. GET /invoices/number-sets.
| Name | Type | Req | Description |
|---|---|---|---|
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
No output schema declared.
No examples provided.
invbg_list_payment_methods List payment methods ~64
The payment method codes a document accepts (cash, bank, card, ...) with their names. GET /invoices/payment-methods.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
No output schema declared.
No examples provided.
invbg_list_payments List payments ~291
Recorded payments (income and expense) with amount, method, date, counterparty, how much is allocated to invoices (amount_used) and what is left (amount_left). GET /payments.
| Name | Type | Req | Description |
|---|---|---|---|
| amount_gt | number | – | Amount of at least this value. |
| amount_lt | number | – | Amount of at most this value. |
| contragent | string | – | Counterparty name; % matches any run of characters. |
| contragent_id | integer | – | Counterparty (client) id. |
| is_expense | boolean | – | true = expenses only, false = income only. |
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
| order | string | – | Sort direction (default desc). |
| order_by | string | – | Field to sort by (for example id, date or name; see the vendor reference). |
| page | integer | – | Page number, from 1 (default 1). Pass the previous reply's next_page. |
| paid_from | string | – | Paid on or after this date. |
| paid_to | string | – | Paid on or before this date. |
| payment_processor | array | – | How the payment was received. |
| per_page | integer | – | Results per page, 1-100 (default 25). |
| search | string | – | Free-text search over the results. |
No output schema declared.
No examples provided.
invbg_list_vat_exemption_reasons List VAT exemption reasons ~75
The legal reasons for issuing a document without VAT (use one as vat_exemption_reason in invbg_create_invoice). GET /invoices/without-vat-reasons.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | Language of names in the reply: bg (default) or en, where the record has both. |
No output schema declared.
No examples provided.
invbg_record_invoice_payment Record invoice payment ~217
WRITE: record a payment received for a document and allocate it, which updates the document's balance_paid/balance_due and payment status. Two calls: POST /payments, then POST /payments/{id}/invoices. If the allocation fails the payment stays recorded: the error names its id (see invbg_get_payment).
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | yes | Amount received and allocated to this document. |
| contragent_id | integer | – | The paying client's id. |
| currency | string | yes | Currency of the payment (required by inv.bg), e.g. BGN or EUR. |
| currency_rate | number | yes | Exchange rate to BGN (required by inv.bg): 1 for BGN; otherwise the rate from invbg_get_exchange_rate. |
| invoice_id | integer | yes | inv.bg document id the payment is for. |
| note | string | – | Note stored on the payment. |
| paid_at | string | – | When it was paid (default now). |
| payment_processor | string | yes | How the money was received. |
No output schema declared.
No examples provided.
invbg_send_invoice_email Email invoice ~148
WRITE: email a document to a recipient (as a download link or an attached file). The email goes out immediately and cannot be recalled. POST /invoices/{id}/emails.
| Name | Type | Req | Description |
|---|---|---|---|
| delivery | string | – | link = a download link (default), file = attached PDF. |
| string | yes | Recipient email address. | |
| invoice_id | integer | yes | inv.bg document id. |
| language | string | – | Language of the document (default: the document's own). |
| message | string | – | Message text placed in the email. |
| name | string | – | Recipient name used in the text. |
| subject | string | – | Email subject (default: the document number). |
No output schema declared.
No examples provided.
invbg_update_client Update client ~121
WRITE: change fields of an existing client (only the fields you pass are changed). PATCH /clients/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | – |
| bulstat | string | – | – |
| client_id | integer | yes | inv.bg client id. |
| code | string | – | – |
| country | string | – | – |
| delivery_address | string | – | – |
| is_reg_vat | boolean | – | – |
| mol | string | – | – |
| name | string | – | – |
| town | string | – | – |
| vat_number | string | – | – |
No output schema declared.
No examples provided.
How do I install the inv.bg MCP by usefulapi server?
inv.bg MCP by usefulapi is a hosted endpoint at https://inv-bg.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 · inv-bg.usefulapi.io
claude mcp add --transport http io-usefulapi-inv-bg 'https://inv-bg.usefulapi.io/mcp'
What is the inv.bg MCP by usefulapi server?
inv.bg MCP by usefulapi is listed in the public MCP registry as io.usefulapi/inv-bg. Read inv.bg invoices, clients, items, payments and banking; create clients, items, invoices. This page covers its hosted endpoint (https://inv-bg.usefulapi.io/mcp).
Is the inv.bg MCP by usefulapi server safe to use?
inv.bg 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 inv.bg MCP by usefulapi server expose?
inv.bg MCP by usefulapi exposes 27 tools: invbg_get_account, invbg_get_firm, invbg_list_invoices, invbg_get_invoice, invbg_list_invoice_types, and 22 more. Their descriptions and schemas cost roughly 4,079 tokens of context every time the server is loaded.
Does the inv.bg MCP by usefulapi server require authentication?
Its publisher declares no required credentials for inv.bg 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 inv.bg MCP by usefulapi server still maintained?
inv.bg MCP by usefulapi 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 did VerifyMCP test on the inv.bg MCP by usefulapi server?
VerifyMCP ran 4 checks on inv.bg 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 inv.bg 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.