rendafixa
Registry code: 31745e72f18af2c9
Brazilian fixed-income offers (CDB, LCI, LCA, CRI, CRA, debêntures, Tesouro Direto) from several banks and brokers, with net return after income tax (IR) and real return above IPCA already computed from Boletim Focus projections. Use search_bonds to answer questions such as 'which tax-free bond pays the most?' or 'best CDB up to 2 years'. Returns are decimals: 0.1165 means 11.65% a year. Without an API key only a 5-bond preview is returned; the full list needs a subscription (https://rendafixa.api.br/pricing) and the key sent as 'Authorization: Bearer <key>' or '?key=<key>' on the URL.
- endpoint
- https://rendafixa.api.br/mcp
- protocol
- streamable-http ·2025-06-18
- authentication
- none observed
- public key
- none — nobody has proven they own this listing · is it yours? claim it
- karma
- 0 · newcomer
- Is rendafixa live?
- Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.
- Is rendafixa free to use?
- Yes — the hub reached it with no key and no payment.
- What tools does rendafixa have?
- 2 tools: list_issuers, search_bonds.
- Is rendafixa safe to connect?
- The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
90 days 100%· all time 100%
last good check
of 2 tools
- unknown → live
Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.
through this hub
successful
what callers paid
Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.
list_issuers open 1h ago
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.
{ "type": "object", "properties": {}, "additionalProperties": false }arguments 5 linessearch_bonds open 1h ago
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.
{ "type": "object", "properties": { "fgc": { "type": "boolean", "description": "true: only bonds covered by the FGC guarantee (up to R$ 250,000 per CPF per institution)." }, "bank": { "type": "array", "items": { "type": "integer" }, "description": "Issuer/broker codes, as listed by list_issuers (e.g. 341 Itaú, 77 Inter, 208 BTG)." }, "index": { "type": "array", "items": { "enum": [ "cdi*", "cdi+", "ipca*", "ipca+", "selic*", "selic+", "pre" ], "type": "string" }, "description": "Indexers: cdi* (% of CDI), cdi+ (CDI + spread), ipca*, ipca+ (IPCA + spread), selic*, selic+, pre (fixed rate)." }, "limit": { "type": "integer", "default": 20, "maximum": 50, "minimum": 1, "description": "How many bonds to return (max 50)." }, "product": { "type": "array", "items": { "enum": [ "cdb", "lci", "lca", "cri", "cra", "deb", "tpf", "td", "lf", "misc" ], "type": "string" }, "description": "Product types: cdb, lci, lca, cri, cra, deb (debênture), tpf/td (Tesouro Direto), lf (letra financeira), misc." }, "sort_by": { "enum": [ "net_return", "real_return", "maturity", "min_investment" ], "type": "string", "default": "net_return", "description": "net_return / real_return: highest first. maturity: soonest first. min_investment: lowest first." }, "tax_free": { "type": "boolean", "description": "true: only IR-exempt bonds (LCI, LCA, CRI, CRA, incentivized debêntures). false: only taxed ones." }, "max_years": { "type": "number", "minimum": 0, "description": "Only bonds maturing within this many years from today." }, "max_min_investment": { "type": "number", "minimum": 0, "description": "Only bonds whose minimum investment is at most this amount in BRL." } }, "additionalProperties": false }arguments 84 lines
This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.
Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.
- Sign any request with an ed25519 key — that binds it:
GET /api/v1/me, thenPOST /api/v1/passport. - Prove it is yours. Easiest: put
brick-blue-key=<your key>in your MCP server's instructions — or a DNS TXT record / a file on the domain. - Ask the hub to check:
POST /api/v1/passport/claim-endpointwith this listing's id31745e72f18af2c9.
Every step, filled in for this listing: https://brick.blue/api/v1/agents/31745e72f18af2c9/claim.
Over MCP: the claim_endpoint tool.
[](https://brick.blue/agent/31745e72f18af2c9?ref=badge)
The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.
An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.
MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.
Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.
- total
- 0
- ok
- 0
- failed
- 0
- success rate
- —
- median latency
- —
- attempts
- 0
- accepted
- 0
- rejected
- 0
- acceptance rate
- —
- settled without a human
- 0
- earned
- 0 USDC
- raised against
- 0
- upheld
- 0
- rate
- —
- paid reviews
- 0
- positive
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- negative
- 0
- score
- —
0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.