# Conta Clara API (remote · api.rohnelt.dev)

Brazilian 2026 payroll and MEI estimates. 50 free calls/day/IP; optional paid annual key.

- Trust score: 62/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `api.rohnelt.dev`: 62/100 (this document), [markdown](https://verifymcp.io/servers/dev-rohnelt-api-conta-clara/api.md), [page](https://verifymcp.io/servers/dev-rohnelt-api-conta-clara/api)

## Channel facts

- Endpoint: `https://api.rohnelt.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 8 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 49/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 549 tokens (~68/item across 8 items; 8 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 81/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 42% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Conta Clara API MCP server?

Conta Clara API is a hosted endpoint at https://api.rohnelt.dev/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.

### Claude

```bash
claude mcp add --transport http dev-rohnelt-api-conta-clara 'https://api.rohnelt.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-rohnelt-api-conta-clara": {
      "url": "https://api.rohnelt.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-rohnelt-api-conta-clara": {
      "type": "http",
      "url": "https://api.rohnelt.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-rohnelt-api-conta-clara]
url = "https://api.rohnelt.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-rohnelt-api-conta-clara": {
      "type": "remote",
      "url": "https://api.rohnelt.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-rohnelt-api-conta-clara --url 'https://api.rohnelt.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-rohnelt-api-conta-clara:
    url: "https://api.rohnelt.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-rohnelt-api-conta-clara": {
      "Transport": "http",
      "Url": "https://api.rohnelt.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-rohnelt-api-conta-clara -t streamable-http -u 'https://api.rohnelt.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "dev-rohnelt-api-conta-clara": {
      "type": "http",
      "url": "https://api.rohnelt.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 61, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 59, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-28 (score 58)

First indexed and scored.

## MCP tools (8)

### `inss` (~26 tokens)

Cálculo informativo inss 2026

Input parameters:

- `salary` (number, required)

### `irrf` (~34 tokens)

Cálculo informativo irrf 2026

Input parameters:

- `dependents` (integer)
- `salary` (number, required)

### `ferias` (~41 tokens)

Cálculo informativo ferias 2026

Input parameters:

- `days` (integer)
- `dependents` (integer)
- `salary` (number, required)

### `13o` (~50 tokens)

Cálculo informativo 13o 2026

Input parameters:

- `advance` (number)
- `dependents` (integer)
- `months` (integer)
- `salary` (number, required)

### `rescisao` (~80 tokens)

Cálculo informativo rescisao 2026

Input parameters:

- `days` (integer)
- `fgts` (number)
- `months13` (integer)
- `monthsVacation` (integer)
- `notice` (integer)
- `periods` (integer)
- `salary` (number, required)
- `type` (string)

### `das-mei` (~28 tokens)

Cálculo informativo das-mei 2026

Input parameters:

- `activity` (string, required)

### `horas-extras` (~179 tokens)

Cálculo informativo horas-extras 2026

Input parameters:

- `divisor` (number): Divisor mensal da jornada
- `hours100` (number): Horas extras a 100%
- `hours50` (number): Horas extras a 50%
- `night100` (number): Horas de relógio extras noturnas a 100% (não repetir acima)
- `night50` (number): Horas de relógio extras noturnas a 50% (não repetir acima)
- `nightHours` (number): Horas de relógio noturnas regulares (sem extras)
- `rest` (integer): Domingos e feriados sem duplicidade
- `salary` (number, required): Base remuneratória (R$)
- `workdays` (integer): Dias úteis do mês (inclua sábados aplicáveis)

### `fgts` (~111 tokens)

Cálculo informativo fgts 2026

Input parameters:

- `balance` (number): Base rescisória para multa, não saldo após saques (R$)
- `current` (number): Saldo atual total das contas FGTS (R$)
- `months` (integer): Meses futuros de depósitos a projetar
- `rate` (number): Alíquota: 8 comum ou 2 aprendiz (%)
- `salary` (number, required): Remuneração sujeita ao FGTS (R$)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-rohnelt-api-conta-clara/api#diagnostics

## Score history

- 2026-11-05: 62
- 2026-11-04: 61
- 2026-11-03: 61
- 2026-11-02: 60
- 2026-11-01: 60
- 2026-10-31: 60
- 2026-10-30: 59
- 2026-10-29: 59
- 2026-10-28: 58

## Common questions

### What is the Conta Clara API MCP server?

Conta Clara API is an MCP server listed in the public MCP registry as dev.rohnelt.api/conta-clara. Brazilian 2026 payroll and MEI estimates. 50 free calls/day/IP; optional paid annual key. This page covers its hosted endpoint (https://api.rohnelt.dev/mcp).

### Is the Conta Clara API MCP server safe to use?

Conta Clara API scores 62 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 Conta Clara API MCP server expose?

Conta Clara API exposes 8 tools: inss, irrf, ferias, 13o, rescisao, and 3 more. Their descriptions and schemas cost roughly 549 tokens of context every time the server is loaded.

### Does the Conta Clara API MCP server require authentication?

No. We connected to Conta Clara API without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Conta Clara API MCP server still maintained?

Conta Clara API 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.

## Links

- Remote endpoint: https://api.rohnelt.dev/mcp
- Website: https://api.rohnelt.dev/docs#chave-anual
- Changelog RSS feed: https://verifymcp.io/servers/dev-rohnelt-api-conta-clara/api.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-rohnelt-api-conta-clara/api.json
- HTML version of this page: https://verifymcp.io/servers/dev-rohnelt-api-conta-clara/api