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io.github.ar-agents/mcp

NPM · @AR-AGENTS/MCP · SCANNED AUG 3

Argentine business automation: Mercado Pago, AFIP/ARCA, WhatsApp, banking, shipping (7 packages).

Available components

+35 this week 76 Trust /100
Trust breakdown (6 categories)

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 →

Supply Chain Security88
  • No malware found by supply-chain analysis.Pass
  • Only part of the dependency tree could be resolved (131 of 135), so this covers what we could see, not the whole tree.Partial
  • No install/post-install scripts declared.Pass
  • Only part of the dependency tree could be resolved (131 of 135), so this covers what we could see, not the whole tree. View diagnostics → Partial
Provenance & Transparency97
  • Source repository is publicly reachable at the declared URL. View diagnostics → Pass
  • Cryptographically verified build provenance (signed, bound to ar-agents/ar-agents). View diagnostics → Pass
  • Clear OSI-approved license (MIT).Pass
  • Actively maintained (last published 20 days ago).Pass
  • Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability61
  • AI-judged instruction clarity (good).Pass
  • Context-footprint check failed: tool/resource definitions use about 3777 tokens (~164/item across 23 items; 23 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 Management27
  • Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage85
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 54% of tool parameters carry a description.Partial
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · @ar-agents/mcp

# add to Claude Code
claude mcp add ar-agents-mcp -- npx -y @ar-agents/mcp
# add to Codex CLI
codex mcp add ar-agents-mcp -- npx -y @ar-agents/mcp
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ar-agents-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@ar-agents/mcp"
      ],
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add ar-agents-mcp --command npx --arg -y --arg @ar-agents/mcp
# ~/.hermes/config.yaml
mcp_servers:
  ar-agents-mcp:
    command: "npx"
    args: ["-y", "@ar-agents/mcp"]
// mcp.json
{
  "mcpServers": {
    "ar-agents-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ar-agents/mcp"
      ]
    }
  }
}
Changelog

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 Aug 26 +4
    • Stability: unverified → 0.27 functional
  • 2 Aug 26 +40
    • Provenance: unverified → pass security
    • Install scripts: unverified → pass security
    • Known CVEs: unverified → partial security
    • Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window). security
    • The attested source repository moved: ar-agents/ar-agents security
    • Tool coverage: 100 → unverified functional
    • License: unverified → pass functional
    • Maintenance: unverified → pass functional
    • MCP protocol: unverified → pass functional
    • Schema quality: unverified → good functional
    • Dependency health: unverified → partial functional
    • Licence: MIT functional
  • 1 Aug 26 +15
    • Malware scan: unverified → pass security
  • 31 Jul 26 −7
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 30 Jul 26 −17
    • Tool coverage: 100 → unverified functional
    • First check of Schema quality: unverified functional
  • 27 Jul 26 41

    First indexed and scored.

Diagnostics

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 3 Aug 2026 · Analysed npm/@ar-agents/[email protected]

Provenance verified

Ecosystem: npm · Outcome: verified

Reason: verified

Source repo:
ar-agents/ar-agents
Certificate issuer:
https://token.actions.githubusercontent.com
Certificate SAN:
https://github.com/ar-agents/ar-agents/.github/workflows/release.yml@refs/heads/main
Rekor log index:
1471861473
Predicate type:
https://slsa.dev/provenance/v1
Subject digest:
sha512:2c4498b5521c5d5a9fc5f979e85a57bfd49a6b50b3f129015574a0579e58cba74bbc58b4e3b53d4a4eabc3bec187b851322800ec008e2be8480e6bf40
Discovery method:
attestation_endpoint
Dependencies 131 packages

131 packages in the resolved dependency tree · 127 deprecated · 39 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 23 exposed · ~3,777 tokens

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.

Tool Tokens
cancelar_envio ~106

Cancelar un envío que aún no salió a reparto. Returns { canceled: bool, reason? }. Si canceled=false, surface reason verbatim al usuario (típicamente 'ya está en reparto' o 'el carrier no soporta cancelación post-pickup'). Para envíos ya entregados, NO se puede cancelar — el usuario tiene que coordinar una devolución manual.

NameTypeReqDescription
carrierstring
tracking_numberstringyesTracking number from crear_envio.

No output schema declared.

No examples provided.

consultar_factura_emitida ~109

Consultar los detalles completos de una factura ya emitida (CAE, fecha, importes, doc receptor). USE WHEN: necesitás verificar que un CAE es válido y matchea con tu base de datos, o estás migrando de otro sistema y querés re-cargar facturas históricas. PURE READ: no side effects.

NameTypeReqDescription
cbteNrointegeryes
cbteTipointegeryes
ptoVtainteger

No output schema declared.

No examples provided.

consultar_ultimo_comprobante ~127

Consultar el último número de comprobante autorizado para un (PtoVta, CbteTipo) — i.e. cuál fue el número del último Factura C emitido desde el punto de venta 1. USE BEFORE emitir_factura para obtener el próximo número (último + 1). Returns 0 si nunca se emitió un comprobante de ese tipo desde ese PtoVta — entonces el próximo es 1. PURE READ: no side effects.

NameTypeReqDescription
cbteTipointegeryes
ptoVtainteger

No output schema declared.

No examples provided.

cotizar_envio ~139

Cotizar el costo de un envío vía un carrier específico (Andreani, OCA, o Correo Argentino). Pasá origen + destino + paquetes (peso + dimensiones + valor declarado) y servicio (standard, express, same_day). Returns { carrier, costArs, estimatedDaysMin, estimatedDaysMax, productId }. USE WHEN el usuario quiere el precio de UN carrier conocido. Para comparar entre carriers, usá cotizar_envio_todos.

NameTypeReqDescription
carrierstring
destinationobjectyes
originobjectyes
packagesarrayyes
servicestring

No output schema declared.

No examples provided.

cotizar_envio_todos ~121

Cotizar un envío en TODOS los carriers configurados en paralelo. Returns { quotes: QuoteOption[] } ordenado por costo (más barato primero). USE WHEN el usuario dice 'cuál es el envío más barato' o 'compará Andreani vs OCA vs Correo'. Si un carrier falla individualmente, los otros igual responden — el campo error en cada quote indica si falló.

NameTypeReqDescription
destinationobjectyes
originobjectyes
packagesarrayyes
servicestring

No output schema declared.

No examples provided.

crear_envio ~140

Crear un envío real con un carrier. RETURNS un trackingNumber + labelUrl + costo. SIDE EFFECT: el envío queda registrado en el sistema del carrier — confirma con el usuario antes si el monto es alto (>$10k declared value). Para Andreani, requiere productId del cotizador previo si querés bloquear el precio. Usá `externalReference` para reconciliar con tu order id.

NameTypeReqDescription
carrierstring
destinationobjectyes
external_referencestring
originobjectyes
packagesarrayyes
product_idstring
servicestring

No output schema declared.

No examples provided.

emitir_factura ~808

Emitir una factura electrónica vía AFIP/ARCA WSFE. Solicita el CAE (Código de Autorización Electrónico) que valida la factura ante AFIP. RETURNS: el CAE (14 dígitos), su fecha de vencimiento, y el número de comprobante asignado, o errors/observaciones si AFIP rechazó. SIDE EFFECT: el CAE queda registrado en AFIP — NO se puede deshacer; para anular, emitir Nota de Crédito. PRE-FLIGHT: validate_cuit (del receptor) + consultar_ultimo_comprobante para obtener el próximo número. CONSTRAINTS: ImpTotal = ImpNeto + ImpIVA + ImpOpEx + ImpTrib + ImpTotConc (AFIP error 10048 si no). Para Factura C (monotributista), ImpIVA debe ser 0 y no incluir filas iva. Para Servicios, fchServDesde/Hasta/VtoPago obligatorios. Para Notas de Crédito/Débito, cbtesAsoc obligatorio referenciando el comprobante original. The lib pre-valida estas reglas localmente antes del round-trip a AFIP.

NameTypeReqDescription
cbteDesdeintegeryesNúmero del comprobante a emitir. Obtenelo con consultar_ultimo_comprobante() + 1.
cbteFchstringyesFecha del comprobante en formato YYYYMMDD (ej: "20260506"). Debe estar dentro de ±5 días de hoy (servicios: ±10).
cbteTipoyesTipo de comprobante AFIP. Lista cerrada — debe coincidir con CbteTipo en catalogs.ts. Si AFIP agrega nuevos códigos, agregalos a CbteTipo y a este union juntos.
cbtesAsocarrayComprobantes asociados (requerido para Notas de Crédito/Débito).
conceptoyes1 = Productos, 2 = Servicios, 3 = Productos y Servicios.
docNroyesNúmero de documento del receptor. Para Consumidor Final pasá 0.
docTipoyesTipo de documento del receptor — lista cerrada AFIP. Debe coincidir con DocTipo en catalogs.ts.
fchServDesdestringServicios: fecha de inicio del período (YYYYMMDD).
fchServHastastringServicios: fecha de fin del período (YYYYMMDD).
fchVtoPagostringServicios: fecha de vencimiento del pago (YYYYMMDD).
impIVAnumberyesImporte IVA. Para Factura C debe ser 0. Para A/B = sum(iva[].importe).
impNetonumberyesImporte neto gravado (subtotal antes de IVA).
impOpExnumberImporte operaciones exentas. Default 0.
impTotConcnumberImporte neto no gravado. Default 0.
impTotalnumberyesImporte total de la factura. Debe ser igual a impNeto + impIVA + impOpEx + impTrib + impTotConc.
impTribnumberImporte total de tributos (provinciales/municipales). Default 0.
ivaarrayFilas de discriminación IVA. Requerido para Factura A/B con impIVA > 0; vacío para Factura C.
monCotiznumberCotización vs ARS. Default 1 para PES. Para otras monedas obtenelo con obtener_cotizacion().
monIdstringMoneda. Default "PES". Otras: "DOL", "060" (Euro), "012" (Real).
ptoVtaintegerPunto de venta (1-99999). Omitible si pasaste defaultPtoVta al construir las tools.

No output schema declared.

No examples provided.

health_check_afip ~59

Health check de AFIP WSFE — devuelve el status de los servidores app, db, y auth. Use as a /health endpoint o como pre-flight rápido antes de emitir muchas facturas. PURE READ, latencia < 200ms.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

list_banks ~72

Return the full list of known Argentine banks with their BCRA codes. USE THIS WHEN: you need to render a dropdown of banks for the user to pick from, or need to enumerate available entities for a workflow. Sorted by BCRA code. Returns array of `{ code, name, shortName, kind }`.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

list_psps ~110

Return the full list of known Argentine PSPs (fintechs / digital wallets / virtual account issuers — Mercado Pago, Ualá, Naranja X, Personal Pay, etc.) with their CVU prefixes. USE THIS WHEN: you need to render a dropdown of fintech wallets for the user to pick from, or need to enumerate PSPs for a workflow. Returns array of `{ code, name, shortName, kind }` where `code` is the 7-digit CVU prefix.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

listar_sucursales ~119

Listar las sucursales / centros de despacho de un carrier cerca de un Código Postal Argentino (CPA). Returns array con id, name, address, openingHours, distanceKm cuando disponible. USE WHEN el usuario quiere despachar el envío en sucursal en lugar de retiro a domicilio, o cuando necesita un punto Pickup para que el destinatario retire.

NameTypeReqDescription
carrierstring
limitinteger
postal_codestringyesAR CPA — 4 digits or extended ('B1842ZAB').

No output schema declared.

No examples provided.

lookup_bank_by_code ~242

Look up the Argentine bank or PSP (payment service provider) by its 3-digit BCRA-assigned entity code. PURE FUNCTION: in-memory lookup, free, sub-millisecond. Returns the entity's full legal name, short brand name, and kind (cbu = traditional bank, cvu = fintech). USE THIS WHEN: you have a bank code (e.g., from a CBU you've already parsed, from a user's input dropdown, from a transaction record) and need its human-readable name. For CVU prefixes (0000031 etc.), pass the 7-digit prefix; for traditional banks pass the 3-digit code. Returns null when the code isn't in the lookup table — the table is BCRA-published but updated periodically, so newer fintechs may be missing.

NameTypeReqDescription
codestringyesThe BCRA entity code. For traditional banks pass the 3-digit code (e.g., '007' for Galicia, '011' for Nación). For PSPs/fintechs pass the 7-digit prefix (e.g., '0000031' for Mercado Pago, '0000007' f…

No output schema declared.

No examples provided.

lookup_credit_situation ~285

Look up the BCRA Central de Deudores credit situation for an Argentine CUIT. Returns the worst situation code (1=normal, 2=low risk <90 days, 3=medium risk 90-180 days, 4=high risk 180-365 days, 5=irrecoverable, 6=irrecoverable by admin disposition), total outstanding debt across all entities, and per-entity breakdown. USE THIS WHEN: the user is assessing counterparty risk before extending credit, factoring invoices, or onboarding a B2B supplier. DO NOT USE for routine billing decisions — Mercado Pago handles credit risk on the SaaS's behalf for normal subscription flows. REQUIRES: a `BcraDeudaAdapter` configured at app boot. The default `BcraPublicApiAdapter` hits BCRA's public REST API (no auth required). When NOT configured, returns `{ available: false, error: <setup instructions> }` instead of crashing — surface the error verbatim. ALWAYS call `validate_cuit` (from @ar-agents/identity) first to confirm format before hitting BCRA.

NameTypeReqDescription
cuitstringyesThe CUIT to look up against BCRA Central de Deudores. Pass the 11-digit normalized form (output of validate_cuit.normalized from @ar-agents/identity).

No output schema declared.

No examples provided.

lookup_cuit_afip ~246

Look up an Argentine CUIT/CUIL against AFIP's padron webservice. Returns taxpayer name, tax condition (Monotributo / Responsable Inscripto / etc.), monotributo category if applicable, and registered address. REQUIRES an `AfipPadronAdapter` configured at app boot — typically wired to AFIP's WSAA + WSCDC SOAP integration which itself requires an X.509 cert registered with AFIP. WHEN NOT CONFIGURED: this tool returns `{ available: false, error: <setup instructions> }` instead of crashing. SURFACE the error message verbatim to the user — it contains the actionable steps to enable the lookup. DO NOT make up taxpayer info if available is false. USE THIS WHEN: the user asks for the taxpayer's name, tax condition, monotributo category, registered address, or activities. ALWAYS call `validate_cuit` first to confirm the format is sound — there's no point hitting AFIP for a malformed CUIT.

NameTypeReqDescription
cuitstringyesThe CUIT/CUIL to look up. Pass the validated/normalized form (output of `validate_cuit.normalized`).

No output schema declared.

No examples provided.

obtener_alicuotas_iva ~92

Listar las alícuotas de IVA disponibles según AFIP (21%=5, 10.5%=4, 27%=6, 0%=3, etc.). USE WHEN: el usuario necesita ver las opciones para construir una factura B o A. HEAVY: round-trip a AFIP. Preferí `AlicuotaIva` constants para flujos comunes.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

obtener_cotizacion ~99

Obtener la cotización oficial AFIP de una moneda extranjera vs ARS. REQUIRED antes de emitir cualquier factura no-PES (AFIP rechaza si la cotización está desactualizada). Devuelve el monCotiz a usar en `emitir_factura`. PURE READ.

NameTypeReqDescription
monIdstringyesCódigo de moneda. Ej: "DOL" (USD), "060" (Euro), "012" (Real).

No output schema declared.

No examples provided.

obtener_tipos_comprobante ~109

Listar los tipos de comprobante disponibles según AFIP (Factura A=1, B=6, C=11, Nota Crédito A=3, etc.). USE WHEN: necesitás mostrar al usuario la lista actualizada (puede haber tipos nuevos que no están en los catalogs hard-coded del lib). HEAVY: hace network round-trip a AFIP — para flujos comunes preferí los constants de `CbteTipo` en `@ar-agents/facturacion`.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

obtener_tipos_concepto ~51

Listar los tipos de concepto: Productos (1), Servicios (2), Productos y Servicios (3). HEAVY: round-trip a AFIP. Preferí `Concepto` constants.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

obtener_tipos_documento ~68

Listar los tipos de documento que AFIP acepta (CUIT=80, DNI=96, Pasaporte=94, Consumidor Final=99, etc.). HEAVY: round-trip a AFIP. Preferí los constants de `DocTipo` para flujos comunes.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

obtener_tipos_moneda ~78

Listar las monedas que WSFE acepta para emitir facturas (PES = Pesos, DOL = Dólar, 060 = Euro, 012 = Real, etc.). USE WHEN: el usuario quiere emitir Factura E (exportación) o multi-moneda. HEAVY: round-trip a AFIP.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

trackear_envio ~106

Consultar el estado actual de un envío vía su trackingNumber. Returns { currentStatus, events[], deliveredAt? }. currentStatus normalizado a uno de: label_created, in_transit, out_for_delivery, delivered, delivery_failed, returned, canceled, exception, unknown. SURFACE los `events` al usuario en orden cronológico — muestran el detalle del recorrido.

NameTypeReqDescription
carrierstring
tracking_numberstringyesTracking number from crear_envio.

No output schema declared.

No examples provided.

validate_cbu ~248

Validate an Argentine CBU (Clave Bancaria Uniforme, traditional bank account) or CVU (Clave Virtual Uniforme, fintech wallet account) via the BCRA dual mod-10 check-digit algorithm. PURE FUNCTION: no API call, no environment dependencies, sub-millisecond latency, free. Returns whether the input is mathematically valid PLUS the bank/PSP identification (e.g., '007 → Banco Galicia', '0000031 → Mercado Pago'), the branch code, and the account number. USE THIS WHEN: the user pastes a CBU/CVU and you need to detect typos, identify the issuing bank/wallet, or extract the account components before submitting a transfer or alias setup. Always call this BEFORE any transfer-related action — invalid CBUs cause hard failures downstream and chargebacks. Distinguishes CBU vs CVU automatically via the entity-code prefix.

NameTypeReqDescription
cbustringyesThe CBU/CVU to validate. Accepts any format with or without separators: 0070055530005571000018, 00700555-30005571000018, with spaces, etc. The function normalizes by stripping non-digit characters be…

No output schema declared.

No examples provided.

validate_cuit ~243

Validate an Argentine CUIT/CUIL via the AFIP modulo-11 check digit algorithm. PURE FUNCTION: no API call, no environment dependencies, sub-millisecond latency, free. Returns whether the input is mathematically valid plus the inferred person type (persona física vs jurídica). USE THIS WHEN: the user pastes a CUIT/CUIL and you need to detect typos, infer person type from the prefix, or normalize formatting before downstream operations. DO NOT USE WHEN: the user wants the taxpayer's name, tax condition, or monotributo category — call `lookup_cuit_afip` for that. Always call `validate_cuit` first; if it returns invalid, do NOT call `lookup_cuit_afip` (you already know the answer is no, and you'd waste an AFIP request).

NameTypeReqDescription
cuitstringyesThe CUIT/CUIL to validate. Accepts any format with or without separators: 20-41758101-5, 20.41758101.5, 20 41758101 5, 20417581015. The function normalizes by stripping non-digit characters before va…

No output schema declared.

No examples provided.