Servidor MCP para el actor Legal Entity Resolver de Mamba Labs en Apify.
Dale un dominio de empresa y devuelve la entidad legal registrada que hay detrás: nombre legal, número de empresa, jurisdicción, estado, LEI y número de IVA. Una fila plana por dominio, 24 campos, lista para Clay o un CRM.
npx -y @mambalabsdev/mcp-legal-entity-resolver{
"mcpServers": {
"mamba-legal-entity-resolver": {
"command": "npx",
"args": ["-y", "@mambalabsdev/mcp-legal-entity-resolver"],
"env": { "APIFY_TOKEN": "your-apify-token" }
}
}
}Obtén un token de Apify en console.apify.com/account/integrations.
Related MCP server: Workplace Program Detector MCP Server
resolve_legal_entityDominio de empresa de entrada, entidad legal registrada de salida.
Entrada | Tipo | Obligatorio | Notas |
| string | sí | Un único dominio de empresa, por ejemplo monzo.com. Se eliminan el protocolo y la ruta. |
| string | no | Omite la búsqueda por dominio y va directamente a los registros con este nombre. Úsalo cuando ya tengas el nombre legal y solo quieras el registro. |
| string | no | Código de país ISO-2. |
| enum | no |
|
| boolean | no | Ejecuta cualquier número de IVA encontrado en las páginas propias de la empresa a través del servicio VIES de la UE y devuelve el nombre que VIES tiene para él, como verificación cruzada con el nombre del registro. Por defecto |
| enum | no |
|
Los endpoints de búsqueda de registros son difusos y siempre devuelven algo. Tomar el primer resultado de búsqueda te da un número de empresa equivocado con seguridad la mayoría de las veces. Este actor acepta una coincidencia solo cuando los nombres legales son idénticos tras la normalización, por eso aproximadamente 6 de cada 10 dominios se resuelven en lugar de 10 de cada 10, y por eso los 6 merecen la pena.
Lee match_method, match_confidence y rejected_candidates antes de actuar sobre una coincidencia. La estrictez fuzzy es un modo de investigación: te dará una empresa equivocada con seguridad en la mayoría de los dominios.
Se consultan tres registros: UK Companies House, GLEIF y SEC EDGAR.
Se te cobra por dominio resuelto, más una pequeña tarifa de inicio del actor. Los resultados en caché son de 90 días para una empresa resuelta y 7 días para un nulo.
Los precios están en la página del actor en Apify. Ejecutar este servidor consume créditos de Apify.
Es un cliente ligero para el actor de Apify. Pasa tu entrada directamente y devuelve la salida del actor sin cambios. Todo el comportamiento descrito anteriormente vive en el actor, no aquí.
Esto no es una base de datos de empresas ni un producto de crédito o riesgo. No puntúa empresas, no las califica ni te dice si debes comerciar con ellas. Responde una sola pregunta: qué entidad legal registrada se encuentra detrás de este dominio.
Los errores se muestran, nunca se ocultan. Una entrada no válida, un token no válido, un saldo agotado, un tiempo de espera agotado o una ejecución que devuelva algo distinto de un conjunto de datos se devuelven como un error explícito de la herramienta, no como un resultado vacío.
El actor está en Apify Store. Este wrapper tiene licencia MIT.
Creado por Mamba Labs.
Give it a company domain and it returns the registered legal entity behind it: legal name, company number, jurisdiction, status, entity type, LEI and VAT number, as one flat row with a full audit trail of what was rejected and why. Three registers are queried: UK Companies House, GLEIF and SEC EDGAR. Register search endpoints are fuzzy and always return something, so by default a record is accepted only when the normalized legal names are identical. That is why roughly 6 domains in 10 resolve rather than 10 in 10, and why a null here is a trustworthy answer rather than a gap. Read match_method, match_confidence and rejected_candidates before acting on a match. Setting match_strictness to fuzzy will hand you a confidently wrong company on most domains and should be treated as a research mode, not a default. This is not a company database and not a credit or risk product. Requires an APIFY_TOKEN and consumes Apify credits. Read only.
| Name | Required | Description | Default |
|---|---|---|---|
| domain | Yes | A single company domain, for example monzo.com. Protocol and path are stripped. | |
| skipCache | No | false uses the cache: 90 days for a resolved company, 7 days for a null. true forces a fresh look. Default: "false". | |
| validate_vat | No | Runs any VAT number found on the company's own pages through the EU VIES service and returns the name VIES holds for it, as a cross-check against the register name. Default: true. | |
| max_charge_usd | No | Optional spending cap for this call, in USD, passed to the actor as max_charge_usd. The run stops before any charge that would take it past this amount and keeps every row already charged. Leave empty to rely only on the maximum charge per run set on your Apify account. | |
| legal_name_hint | No | Skips the domain lookup and goes straight to the registers with this name. Use it when you already have the legal name and just want the register record. | |
| match_strictness | No | exact accepts a register record only when the normalized legal names are equal, which is the default and the recommendation. fuzzy returns the best scoring candidate with a confidence below 100 and a warning in rejected_candidates. Register search is fuzzy and always returns something, so fuzzy mode will hand you a confidently wrong company on most domains. Default: "exact". | |
| jurisdiction_hint | No | ISO-2 country code. GB or UK asks Companies House and GLEIF and returns a Companies House number. US asks GLEIF and SEC EDGAR. FR asks the French Sirene register and returns a SIREN. NO asks the Norwegian Brreg register and returns an organisasjonsnummer. Any other code asks GLEIF alone rather than guessing at a register with no adapter. Leave empty to query all five. Narrowing cuts latency, and registers_queried on the row records which were actually asked, so a null is never ambiguous. | |
| sec_requester_name | Yes | Required. Your own name or your company's name. The SEC requires every automated request to EDGAR to identify the requester by name and email, and the actor sends yours, never a default. | |
| sec_requester_email | Yes | Required. Your own working email address. Sent to the SEC with your name in the User-Agent of each EDGAR request, in the form the SEC asks for. Nothing else uses it. |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations say readOnlyHint=false, which is surprisingly defensive for a lookup; the description resolves the ambiguity by stating 'Read only' and by disclosing that it consumes Apify credits and requires an APIFY_TOKEN. It goes well beyond annotations with the 6-in-10 resolution rate, the always-returns-something register behavior, the audit trail of rejections, and the fields to read before acting. This is rich behavioral context the structured fields do not carry.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is front-loaded with the core contract (domain in, flat row out) then layers warnings. It is dense but every sentence carries information; the only cost is that the match_method/match_confidence warning and the fuzzy warning slightly overlap.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a 9-parameter tool with no output schema, the description covers inputs, the return shape (flat row with named fields), failure semantics (nulls are meaningful), cost/auth requirements, and the caveats needed to invoke it correctly. Nothing essential is missing.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3, but the description adds genuine value beyond the schema: it explains why match_strictness=fuzzy produces confidently wrong results, the default cache semantics for skipCache, and how jurisdiction_hint trades coverage for latency. The legal_name_hint alternative path is only lightly touched.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a precise verb+resource: given a domain, it returns the registered legal entity behind it, and it enumerates the returned fields. It also draws explicit negative boundaries ('not a company database and not a credit or risk product') that no sibling tool supplies. There are no siblings, but the purpose is unmistakable.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It gives clear conditions for the main behavior choice: default exact matching vs fuzzy mode, and warns fuzzy is a research mode, not a default. It also explains the null-is-trustworthy framing. It stops short of stating prerequisites like when a legal_name_hint is preferable, but the core guidance is explicit.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
v1.4.0resolve_legal_entity6 fields changedInput schema / additionalPropertiesRemoved value: -falseInput schema / properties / jurisdiction_hint / descriptionPrevious value: -"ISO-2 country code, for example GB or US. Narrows which registers are queried and cuts latency. Leave empty to query every register."New value: +"ISO-2 country code. GB or UK asks Companies House and GLEIF and returns a Companies House number. US asks GLEIF and SEC EDGAR. FR asks the French Sirene register and returns a SIREN. NO asks the Norwegian Brreg register and returns an organisasjonsnummer. Any other code asks GLEIF alone rather than guessing at a register with no adapter. Leave empty to query all five. Narrowing cuts latency, and registers_queried on the row records which were actually asked, so a null is never ambiguous."Input schema / properties / max_charge_usdAdded value: +{
+ "description": "Optional spending cap for this call, in USD, passed to the actor as max_charge_usd. The run stops before any charge that would take it past this amount and keeps every row already charged. Leave empty to rely only on the maximum charge per run set on your Apify account.",
+ "minimum": 0,
+ "type": "number"
+}Input schema / properties / sec_requester_emailAdded value: +{
+ "description": "Required. Your own working email address. Sent to the SEC with your name in the User-Agent of each EDGAR request, in the form the SEC asks for. Nothing else uses it.",
+ "format": "email",
+ "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
+ "type": "string"
+}Input schema / properties / sec_requester_nameAdded value: +{
+ "description": "Required. Your own name or your company's name. The SEC requires every automated request to EDGAR to identify the requester by name and email, and the actor sends yours, never a default.",
+ "maxLength": 100,
+ "minLength": 1,
+ "type": "string"
+}Input schema / requiredPrevious value: -[
- "domain"
-]New value: +[
+ "sec_requester_name",
+ "sec_requester_email",
+ "domain"
+]v1.0.0resolve_legal_entityScored across 1 tool
There is only one tool, so there is nothing to confuse it with. Its purpose (domain → registered legal entity) is stated unambiguously, including what it does not do (not a company database, not a risk product).
A single tool named resolve_legal_entity follows a clear verb_noun snake_case pattern. There is no competing convention to clash with it.
The server is deliberately scoped to one operation, and that operation is substantive (multi-register lookup with audit trail). Still, a single tool is thin for a server surface and forces any multi-domain or reverse-lookup workflow to be handled outside it.
The core read path is well covered: resolution, confidence/method metadata, rejected candidates, and multiple registers. Gaps are minor — no batch resolution of many domains and no reverse lookup (name/company number → domain), which an agent would have to loop around.
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