# Renda Fixa (remote · rendafixa.api.br)

Brazilian fixed income (CDB, LCI, LCA, CRI, CRA, Tesouro) ranked by net-of-tax and real return.

- Trust score: 81/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `rendafixa.api.br`: 81/100 (this document), [markdown](https://verifymcp.io/servers/br-api-rendafixa-renda-fixa/rendafixa.md), [page](https://verifymcp.io/servers/br-api-rendafixa-renda-fixa/rendafixa)

## Channel facts

- Endpoint: `https://rendafixa.api.br/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**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - 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**: 61/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 624 tokens (~312/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 87/100
  - Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% 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 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 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 Renda Fixa MCP server?

Renda Fixa is a hosted endpoint at https://rendafixa.api.br/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 br-api-rendafixa-renda-fixa 'https://rendafixa.api.br/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "br-api-rendafixa-renda-fixa": {
      "url": "https://rendafixa.api.br/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "br-api-rendafixa-renda-fixa": {
      "type": "http",
      "url": "https://rendafixa.api.br/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.br-api-rendafixa-renda-fixa]
url = "https://rendafixa.api.br/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "br-api-rendafixa-renda-fixa": {
      "type": "remote",
      "url": "https://rendafixa.api.br/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add br-api-rendafixa-renda-fixa --url 'https://rendafixa.api.br/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  br-api-rendafixa-renda-fixa:
    url: "https://rendafixa.api.br/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "br-api-rendafixa-renda-fixa": {
      "Transport": "http",
      "Url": "https://rendafixa.api.br/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add br-api-rendafixa-renda-fixa -t streamable-http -u 'https://rendafixa.api.br/mcp'
```

### Other

```json
{
  "mcpServers": {
    "br-api-rendafixa-renda-fixa": {
      "type": "http",
      "url": "https://rendafixa.api.br/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 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-27 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-25 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-23 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (2)

### `search_bonds` (~418 tokens)

Buscar títulos de renda fixa

Search active Brazilian fixed-income bonds and rank them. Every bond comes with net_annualized_return (after IR, to maturity) and real_annualized_return (above IPCA), both decimals. 'rate' depends on 'index': cdi* 1.05 = 105% of CDI, cdi+ 0.02 = CDI + 2% a.a., ipca+ 0.06 = IPCA + 6% a.a., pre 0.13 = 13% a.a. fixed. Without an API key the result is a short preview.

Input parameters:

- `bank` (array): Issuer/broker codes, as listed by list_issuers (e.g. 341 Itaú, 77 Inter, 208 BTG).
- `fgc` (boolean): true: only bonds covered by the FGC guarantee (up to R$ 250,000 per CPF per institution).
- `index` (array): Indexers: cdi* (% of CDI), cdi+ (CDI + spread), ipca*, ipca+ (IPCA + spread), selic*, selic+, pre (fixed rate).
- `limit` (integer): How many bonds to return (max 50).
- `max_min_investment` (number): Only bonds whose minimum investment is at most this amount in BRL.
- `max_years` (number): Only bonds maturing within this many years from today.
- `product` (array): Product types: cdb, lci, lca, cri, cra, deb (debênture), tpf/td (Tesouro Direto), lf (letra financeira), misc.
- `sort_by` (string): net_return / real_return: highest first. maturity: soonest first. min_investment: lowest first.
- `tax_free` (boolean): true: only IR-exempt bonds (LCI, LCA, CRI, CRA, incentivized debêntures). false: only taxed ones.

### `list_issuers` (~44 tokens)

Listar emissores e corretoras

List the banks/brokers present in the data with their numeric codes and how many bonds each has, to use as the 'bank' filter of search_bonds.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/br-api-rendafixa-renda-fixa/rendafixa#diagnostics

## Score history

- 2026-11-05: 81
- 2026-11-04: 80
- 2026-11-03: 80
- 2026-11-02: 79
- 2026-11-01: 79
- 2026-10-31: 78
- 2026-10-30: 78
- 2026-10-29: 77
- 2026-10-28: 77
- 2026-10-27: 77
- 2026-10-26: 76
- 2026-10-25: 76
- 2026-10-24: 75
- 2026-10-23: 75
- 2026-10-22: 74
- 2026-10-21: 74
- 2026-10-20: 73
- 2026-10-19: 73
- 2026-10-18: 72
- 2026-10-17: 72
- 2026-10-16: 71
- 2026-10-15: 71
- 2026-10-14: 70
- 2026-10-13: 70
- 2026-10-12: 70
- 2026-10-10: 69

## Common questions

### What is the Renda Fixa MCP server?

Renda Fixa is an MCP server listed in the public MCP registry as br.api.rendafixa/renda-fixa. Brazilian fixed income (CDB, LCI, LCA, CRI, CRA, Tesouro) ranked by net-of-tax and real return. This page covers its hosted endpoint (https://rendafixa.api.br/mcp).

### Is the Renda Fixa MCP server safe to use?

Renda Fixa scores 81 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 Renda Fixa MCP server expose?

Renda Fixa exposes 2 tools: search_bonds, list_issuers. Their descriptions and schemas cost roughly 462 tokens of context every time the server is loaded.

### Does the Renda Fixa MCP server require authentication?

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

### Is the Renda Fixa MCP server still maintained?

Renda Fixa 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://rendafixa.api.br/mcp
- Repository: https://github.com/jean-knapp/rendafixa-api
- Website: https://rendafixa.api.br/docs/api
- Changelog RSS feed: https://verifymcp.io/servers/br-api-rendafixa-renda-fixa/rendafixa.xml
- Changelog JSON feed: https://verifymcp.io/servers/br-api-rendafixa-renda-fixa/rendafixa.json
- HTML version of this page: https://verifymcp.io/servers/br-api-rendafixa-renda-fixa/rendafixa