Renda Fixa
REMOTE · RENDAFIXA.API.BR
Brazilian fixed income (CDB, LCI, LCA, CRI, CRA, Tesouro) ranked by net-of-tax and real return.
Available components
Last scanned (23 hours ago)
Scores higher than 81% of remote servers
Reachable. Last reached 4 Nov 2026.
Category Finance and Payments
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. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability61
- AI-judged instruction clarity (good).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management83
- Stability observed for 25 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 3 Nov 26 +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.
- 1 Nov 26 +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.
- 30 Oct 26 +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.
- 27 Oct 26 +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.
- 25 Oct 26 +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.
- 23 Oct 26 +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.
- 21 Oct 26 +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.
- 19 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Nov 2026 · Probed https://rendafixa.api.br/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=athena.airforce | CN=YE1,O=Let's Encrypt,C=US | 26 Oct 2026 | 24 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 6e337832bcaca5139f37af01cd1aaa154d1 |
| SANs: athena.airforce, comunidadedeinvestimentos.com.br, indigoplateau.app, jeankn.app, marketcortex.com.br, meucanil.com.br, modding-assets.net, mysql.jeankn.app, rendafixa.api.br, riscodefauna.net, wiki.jeankn.app, www.athena.airforce and 10 more | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of rendafixa.api.br. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| br. | present | 38298 | 13 | Verified |
| api.br. | present | 50930 | 13 | Verified |
| rendafixa.api.br. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://rendafixa.api.br/mcp | Verified | 200 | |
| http (plaintext) | http://rendafixa.api.br/mcp | HTTPS enforced | 301 | https://rendafixa.api.br/rendafixa-api-br/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
list_issuers Listar emissores e corretoras ~44
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
search_bonds Buscar títulos de renda fixa ~418
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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. |
No output schema declared.
No examples provided.
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.
remote · rendafixa.api.br
claude mcp add --transport http br-api-rendafixa-renda-fixa 'https://rendafixa.api.br/mcp'
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 80 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 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.