siigo-mcp: Skill for Claude Code

.claude/skills/siigo-expert/SKILL.md

siigo-expert is a skill for Claude Code from dsfaccini/siigo-mcp. It costs 39 tokens per session (781 once invoked), scanned A, original, MIT.

A specialised guide for Siigo's API, Colombian electronic invoicing, tax compliance, and customer and product data. DIAN is Colombia's tax authority, and CUFE is the unique code assigned to an electronic invoice.

In plain words
What is it for?
Use it when working with Siigo integrations, sales invoices, credit or debit notes, tax responsibilities, customer or product data, or CUFE validation.
Why use it?
It gives an agent domain rules and API details needed to handle invoicing work accurately instead of guessing about Colombian requirements.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is dsfaccini/siigo-mcp's own configuration. It tells Claude Code how to work on siigo-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything siigo-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dsfaccini/siigo-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/dsfaccini/siigo-mcp/main/.claude/skills/siigo-expert/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/dsfaccini/siigo-mcp

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Your own site · 80×15
<a href="https://agentmods.dev/skills/dsfaccini/siigo-mcp/siigo-expert"><img src="https://agentmods.dev/badge/skills/dsfaccini/siigo-mcp/siigo-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 781 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.00781
Opus 5 $0.00019 $0.00391
Sonnet 5 $0.00008 $0.00156
Haiku 4.5 $0.00004 $0.00078

Measured 9d ago against content hash 1fce6ac7b63a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

siigo-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/siigo-expert/SKILL.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Siigo Expert (Product Manager)

Research-First skill for Siigo business logic, DIAN compliance, and user workflows.

When to Use

Invoke this skill when working on:

  • Colombian electronic invoicing requirements
  • DIAN compliance and document types
  • Customer/product data modeling
  • Invoice workflows and validations
  • API integration patterns

Key Resources

Siigo API Documentation

Authentication

  • Base URL: https://api.siigo.com/v1/
  • Auth endpoint: https://services.siigo.com/alliances/api/siigoapi-users/v1/sign-in
  • Token validity: 24 hours
  • Required headers: Authorization: Bearer {token}, Partner-Id: {id}

Colombian Invoicing (DIAN)

Document Types

  • FV (Factura de Venta) - Sales invoice
  • NC (Nota Crédito) - Credit note
  • ND (Nota Débito) - Debit note
  • RC (Recibo de Caja) - Cash receipt
  • FC (Factura de Compra) - Purchase invoice
  • CC (Comprobante Contable) - Accounting voucher

Electronic Invoicing

  • CUFE: Código Único de Factura Electrónica (unique invoice code)
  • XML format: UBL V2.1 standard
  • Stamp endpoint sends document to DIAN
  • Stamped documents cannot be modified (create credit note instead)

Customer Types

  • Person (Persona Natural): Individual, uses cédula
  • Company (Empresa): Legal entity, uses NIT

Identification Types

  • 13: Cédula de ciudadanía
  • 31: NIT (Número de Identificación Tributaria)
  • 22: Cédula de extranjería
  • 42: Documento de identificación extranjero

Tax Responsibilities

  • R-99-PN: No responsable de IVA (persona natural)
  • O-13: Gran contribuyente
  • O-15: Autorretenedor
  • O-23: Agente de retención IVA

Common Workflows

Create Invoice Flow

  1. Get document types (get_document_types(type="FV"))
  2. Get or create customer
  3. Get or create products with taxes
  4. Create invoice with items and payments
  5. Stamp invoice to DIAN (stamp_invoice)
  6. Send PDF via email (send_invoice_email)

Read the full file on GitHub · 96 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 96 lines · 39 tokens per session scan A 1fce6ac7b63a

Subscribe to this mod's changes

siigo-expert is a skill published in the GitHub repository dsfaccini/siigo-mcp (1 stars, last pushed 8mo ago), licensed MIT. It adds 39 tokens to every session and 781 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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