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beel_set_default_series

Idempotent

Set an invoice series as the default for its document type and company, automatically replacing the previous default. Requires the series to be active and works idempotently for repeated calls.

Instructions

Marks an invoice series as the default of its document type for this company, and unmarks the previous one.

  • One per type: only one series can be the default per company and document type.

  • Must be active: an inactive series is rejected with 400.

  • Idempotent: repeating the call changes nothing.

Endpoint: PUT /v1/companies/{company_id}/series/{series_id}/default

⚠️ Fiscal guardrails — read before calling:

  • How invoice numbers are formed, and why numbering can never be rewritten. (resource: beel://guardrails/series-and-numbering)

For the exhaustive rules and worked examples, call beel_docs_search.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
series_idYesSeries ID to mark as default
company_idYesUnique identifier (UUID) of the company the operation acts on — its identifier, not its NIF. It is the only source of context: the account that owns it is derived from it, and the `BeeL-Active-Company` header plays no part. A company you do not reach answers `403`, and so does a company that does not exist, so the existence of a company in another account is never disclosed.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changedv0.5.0
    • removedInput schema / $defs / UUID / example
      Removed value: -"550e8400-e29b-41d4-a716-446655440000"
    • addedInput schema / additionalProperties
      Added value: +false
    • changedInput schema / properties / company_id / description
      Previous value: -"NIF (company) the operation acts on. It is the only source of context: the account that owns it is derived from it, and the `BeeL-Active-Company` header plays no part. A NIF you do not reach answers `403`, and so does a NIF that does not exist, so the existence of a NIF in another account is never disclosed."New value: +"Unique identifier (UUID) of the company the operation acts on — its identifier, not its NIF. It is the only source of context: the account that owns it is derived from it, and the `BeeL-Active-Company` header plays no part. A company you do not reach answers `403`, and so does a company that does not exist, so the existence of a company in another account is never disclosed."
  2. First observedv0.3.1

TDQS

A4.4/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Adds substantial behavior beyond annotations: unmarks the previous default, rejects inactive series with 400, is idempotent, and explains the fiscal guardrails around numbering being non-rewritable. No contradiction with readOnlyHint=false, idempotentHint=true, or destructiveHint=false.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Well-structured and front-loaded with the main action, followed by bullets, endpoint, and guardrails. The idempotency bullet slightly duplicates the idempotentHint annotation, so it is not perfectly economical, but the overall structure is clear.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple two-parameter mutation with no output schema, the description covers the endpoint, exact behavior, error condition, idempotency, and points to additional fiscal guardrails and exhaustive docs. Nothing critical to correct invocation is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3. The description does not need to add parameter semantics, but it also does not add any beyond the schema, which is acceptable given the schema's richness.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific action and resource: marking an invoice series as the default for its document type and unmarking the previous one. It clearly distinguishes this mutation from the get/ensure siblings by emphasizing the one-per-type assignment behavior.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides clear operational context: one default per type, active series required, idempotent behavior, and a guardrails resource to read before calling. It does not explicitly contrast with the sibling beel_ensure_default_series, so it lacks explicit when-not guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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