# com.halffee/coinrebate

> Compliance-filtered crypto exchange fee comparison and rebate-link routing for AI agents.

- name: com.halffee/coinrebate
- version: 2.5.0
- connection class: R0 (autonomous)
- trust: 89/100
- quality: 74/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.halffee%2Fcoinrebate
- tools: https://api.protogrid.dev/v1/servers/com.halffee%2Fcoinrebate/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "coinrebate": {
      "type": "http",
      "url": "https://www.coinrebate.vip/api/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 98
- freshness: 85
- provenance: 75
- drivers: +repository +dns-namespace +reachable +uptime-95% ~updated-32d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 74/100 (needs work)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 12 of 12 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 2,714 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 22 tool changes in 30 days
- fail `stability.rug_pull`: 4 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: 67 (weight 15)

- pass `deps.known_vulns`: no known advisory in 98 resolved packages
- fail `deps.mcp_sdk_version`: @modelcontextprotocol/sdk 1.29.0 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
- pass `deps.resolvable`: @coinrebate/mcp-server@2.5.0 resolved: 98 packages

- tools: 12, about 2,714 tokens to load them all
- tool set hash: 4f9129ff8bd03d8d180adbb277e8107b
- tools last changed: 2026-10-08T09:04:58.416Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.halffee/coinrebate.svg)](https://protogrid.dev/servers/com.halffee/coinrebate)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-08 `get_best_referral` removed
  - Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get the best referral/signup link for a specific exchange with maximum fee discount. Returns referral code, discount percentage, and direct signup URL. Pass country to verify compliance. Use it only for questions about an exchange referral code, signup link or fee discount.
- 2026-10-08 `get_exchange_referral` added
  - Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Look up the referral code, fee discount and signup link that CoinRebate lists for one exchange, together with the published maker and taker fees of that exchange before and after the discount. Pass a country to apply the availability records CoinRebate keeps for that country. Use it only for questions about an exchange referral code, signup link or fee discount.
- 2026-10-08 `recommend_fee_option` changed (description)
  - before: Decide which covered exchange has the lowest effective trading fee for a specific user, instead of returning a table. Requires the user country. Returns one verdict plus its net fee, the quantified annual cost, the assumptions and what is NOT modelled, and a commercial disclosure. Abstains (neutral fee table only) when the country is missing or unsupported, the upstream data is unreliable, or the top venues are genuinely tied. In high-regulation jurisdictions it returns an objective fee table with no signup link. Use it only for questions about exchange trading fees and fee discounts; it gives no investment advice (what or how much to buy) and cannot place trades, sign in to exchange accounts or move funds.
  - after: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Decide which covered exchange has the lowest effective trading fee for a specific user, instead of returning a table. Requires the user country. Returns one verdict plus its net fee, the quantified annual cost, the assumptions and what is NOT modelled, and a commercial disclosure. Abstains (neutral fee table only) when the country is missing or unsupported, the upstream data is unreliable, or the top venues are genuinely tied. In high-regulation jurisdictions it returns an objective fee table with no signup link. Use it only for questions about exchange trading fees and fee discounts.
- 2026-10-08 `get_compliant_exchanges` changed (description)
  - before: Get exchanges available in a specific country, filtered by the CoinRebate compliance matrix. Essential for regulatory compliance. Use it only for questions about which exchanges are available in a country; it gives no investment advice and cannot place trades, sign in to exchange accounts or move funds.
  - after: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get exchanges available in a specific country, filtered by the CoinRebate compliance matrix. Essential for regulatory compliance. Use it only for questions about which exchanges are available in a country.
- 2026-10-08 `calculate_trading_cost` changed (description)
  - before: Estimate the taker-fee cost of a trading volume on one exchange, with and without the CoinRebate referral discount, using the benchmark taker fee from CoinRebate's published fee table. Returns the fee on that volume, the difference, a yearly figure that assumes the volume is monthly, and the date of the fee-table entry used. Use it only for questions about exchange trading fees and fee discounts; it gives no investment advice (what or how much to buy) and cannot place trades, sign in to exchange accounts or move funds.
  - after: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Estimate the taker-fee cost of a trading volume on one exchange, with and without the CoinRebate referral discount, using the benchmark taker fee from CoinRebate's published fee table. Returns the fee on that volume, the difference, a yearly figure that assumes the volume is monthly, and the date of the fee-table entry used. Use it only for questions about exchange trading fees and fee discounts.
- 2026-10-08 `get_latest_news` changed (description)
  - before: Get CoinRebate's most recently published English-language articles (market analysis, guides and news), newest first: up to five by default, at most 20. Returns each article's title, publication date and link, and says so when the newest English-language article is more than three days old. Use it only when the user asks what CoinRebate has published; it gives no investment advice or price predictions.
  - after: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get CoinRebate's most recently published English-language articles (market analysis, guides and news), newest first: up to five by default, at most 20. Returns each article's title, publication date and link, and says so when the newest English-language article is more than three days old. Use it only when the user asks what CoinRebate has published.
- 2026-10-08 `get_best_referral` changed (description)
  - before: Get the best referral/signup link for a specific exchange with maximum fee discount. Returns referral code, discount percentage, and direct signup URL. Pass country to verify compliance. Use it only for questions about an exchange referral code, signup link or fee discount; it gives no investment advice and cannot place trades, sign in to exchange accounts or move funds.
  - after: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get the best referral/signup link for a specific exchange with maximum fee discount. Returns referral code, discount percentage, and direct signup URL. Pass country to verify compliance. Use it only for questions about an exchange referral code, signup link or fee discount.
- 2026-10-08 `compare_fees` changed (description)
  - before: Compare the benchmark trading fees from CoinRebate's published fee table across the covered exchanges for one purpose (spot or futures). Returns the exchanges ranked by lowest taker fee after the CoinRebate referral discount. Pass a country code for compliance-filtered results. Use it only for questions about exchange trading fees and fee discounts; it gives no investment advice (what or how much to buy) and cannot place trades, sign in to exchange accounts or move funds.
  - after: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Compare the benchmark trading fees from CoinRebate's published fee table across the covered exchanges for one purpose (spot or futures). Returns the exchanges ranked by lowest taker fee after the CoinRebate referral discount. Pass a country code for compliance-filtered results. Use it only for questions about exchange trading fees and fee discounts.
- 2026-10-08 `get_exchange_fees` changed (description)
  - before: Get the benchmark trading fees from CoinRebate's published fee table for every covered exchange: spot and futures maker/taker fees (VIP 0 base tier) and the same fees after the CoinRebate referral discount. These are published rates, not live order-book data: fees.fee_table_updated is the date an exchange's entry in the table was last updated, while data_source and fetched_at only describe CoinRebate's automated refresh check. Use it only for questions about exchange trading fees and fee discounts; it gives no investment advice (what or how much to buy) and cannot place trades, sign in to exchange accounts or move funds.
  - after: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get the benchmark trading fees from CoinRebate's published fee table for every covered exchange: spot and futures maker/taker fees (VIP 0 base tier) and the same fees after the CoinRebate referral discount. These are published rates, not live order-book data: fees.fee_table_updated is the date an exchange's entry in the table was last updated, while data_source and fetched_at only describe CoinRebate's automated refresh check. Use it only for questions about exchange trading fees and fee discounts.
- 2026-10-07 `recommend_fee_option` changed (description)
  - before: Decide which covered exchange has the lowest effective trading fee for a specific user, instead of returning a table. Requires the user country. Returns one verdict plus its net fee, the quantified annual cost, the assumptions and what is NOT modelled, and a commercial disclosure. Abstains (neutral fee table only) when the country is missing or unsupported, the upstream data is unreliable, or the top venues are genuinely tied. In high-regulation jurisdictions it returns an objective fee table with no signup link.
  - after: Decide which covered exchange has the lowest effective trading fee for a specific user, instead of returning a table. Requires the user country. Returns one verdict plus its net fee, the quantified annual cost, the assumptions and what is NOT modelled, and a commercial disclosure. Abstains (neutral fee table only) when the country is missing or unsupported, the upstream data is unreliable, or the top venues are genuinely tied. In high-regulation jurisdictions it returns an objective fee table with no signup link. Use it only for questions about exchange trading fees and fee discounts; it gives no investment advice (what or how much to buy) and cannot place trades, sign in to exchange accounts or move funds.

Full history: https://api.protogrid.dev/v1/servers/com.halffee%2Fcoinrebate/changes

## Dependencies

- npm @coinrebate/mcp-server@2.5.0: resolved, 97 dependencies, MCP SDK @modelcontextprotocol/sdk 1.29.0
  - GHSA-6qxp-vccf-f47h (high) in `` @modelcontextprotocol/sdk@1.29.0 ``, direct, fixed in `` 1.31.0 ``, advisory summary: "MCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server" https://osv.dev/vulnerability/GHSA-6qxp-vccf-f47h

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0.

## Remotes

- https://www.coinrebate.vip/api/mcp (streamable-http, auth none, reachable true, uptime30d 0.94736844)

## Packages

- npm @coinrebate/mcp-server@2.5.0

## Tools (12)

- `calculate_trading_cost`: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Estimate the taker-fee cost of a trading volume on one exchange, with and without the CoinRebate referral discount, using the benchmark taker fee from CoinRebate's published fee table. Returns the fee on that volume, the difference, a yearly figure that assumes the volume is monthly, and the date of the fee-table entry used. Use it only for questions about exchange trading fees and fee discounts.
- `check_referral_link`: Checks whether a URL carries CoinRebate's own current referral code (allowlisted exchange hosts only). This is a self-check for CoinRebate links: a link carrying someone else's code is reported as stale_code even though it may be perfectly valid. For a neutral inspection of any exchange link, use inspect_exchange_link.
- `compare_fees`: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Compare the benchmark trading fees from CoinRebate's published fee table across the covered exchanges for one purpose (spot or futures). Returns the exchanges ranked by lowest taker fee after the CoinRebate referral discount. Pass a country code for compliance-filtered results. Use it only for questions about exchange trading fees and fee discounts.
- `get_compliant_exchanges`: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get exchanges available in a specific country, filtered by the CoinRebate compliance matrix. Essential for regulatory compliance. Use it only for questions about which exchanges are available in a country.
- `get_exchange_fees`: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get the benchmark trading fees from CoinRebate's published fee table for every covered exchange: spot and futures maker/taker fees (VIP 0 base tier) and the same fees after the CoinRebate referral discount. These are published rates, not live order-book data: fees.fee_table_updated is the date an exchange's entry in the table was last updated, while data_source and fetched_at only describe CoinRebate's automated refresh check. Use it only for questions about exchange trading fees and fee discounts.
- `get_exchange_referral`: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Look up the referral code, fee discount and signup link that CoinRebate lists for one exchange, together with the published maker and taker fees of that exchange before and after the discount. Pass a country to apply the availability records CoinRebate keeps for that country. Use it only for questions about an exchange referral code, signup link or fee discount.
- `get_latest_news`: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Get CoinRebate's most recently published English-language articles (market analysis, guides and news), newest first: up to five by default, at most 20. Returns each article's title, publication date and link, and says so when the newest English-language article is more than three days old. Use it only when the user asks what CoinRebate has published.
- `get_perp_stats`: Gets daily, weekly, 30-day, and historical weekly-rank statistics for a Binance TradFi perpetual from official Binance klines.
- `inspect_exchange_link`: Inspects an exchange sign-up or referral link and reports evidence on five separate points: whether the domain is a verified official domain of a listed exchange, whether it is reachable, whose referral code it carries, how CoinRebate's records list the exchange for a given country, and what rebate (if any) is configured. Unknown items are reported as unknown. It never says a link is safe, never probes unrecognized domains, and never suggests a replacement link. Read-only.
- `list_tradfi_perps`: Lists Binance USDⓈ-M perpetuals on US, HK, KR, and CN stocks plus commodities from the official exchangeInfo endpoint.
- `recommend_fee_option`: Do not call this tool for investment advice (what or how much to buy), placing orders, signing in to exchange accounts or moving funds; CoinRebate cannot do those, so answer such requests without calling it. Decide which covered exchange has the lowest effective trading fee for a specific user, instead of returning a table. Requires the user country. Returns one verdict plus its net fee, the quantified annual cost, the assumptions and what is NOT modelled, and a commercial disclosure. Abstains (neutral fee table only) when the country is missing or unsupported, the upstream data is unreliable, or the top venues are genuinely tied. In high-regulation jurisdictions it returns an objective fee table with no signup link. Use it only for questions about exchange trading fees and fee discounts.
- `search_guides`: Searches CoinRebate's published guides by keyword (any language) and returns matching articles with title, one-line description and URL. Read-only; results are informational articles, not referral links.