# LCX Liberty DEX (remote · swap-api.lcx.com)

Best-route swap quotes, token search and USD prices across EVM chains. Read-only, never trades.

- Trust score: 70/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `swap-api.lcx.com`: 70/100 (this document), [markdown](https://verifymcp.io/servers/lcx-ag-lcx-liberty-dex/swap-api.md), [page](https://verifymcp.io/servers/lcx-ag-lcx-liberty-dex/swap-api)

## Channel facts

- Endpoint: `https://swap-api.lcx.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.1`

## 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**: 63/100
  - 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 5 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.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 63/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1436 tokens (~287/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 50/100
  - Stability observed for 15 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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the LCX Liberty DEX MCP server?

LCX Liberty DEX is a hosted endpoint at https://swap-api.lcx.com/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 lcx-ag-lcx-liberty-dex 'https://swap-api.lcx.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "lcx-ag-lcx-liberty-dex": {
      "url": "https://swap-api.lcx.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "lcx-ag-lcx-liberty-dex": {
      "type": "http",
      "url": "https://swap-api.lcx.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.lcx-ag-lcx-liberty-dex]
url = "https://swap-api.lcx.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "lcx-ag-lcx-liberty-dex": {
      "type": "remote",
      "url": "https://swap-api.lcx.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add lcx-ag-lcx-liberty-dex --url 'https://swap-api.lcx.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  lcx-ag-lcx-liberty-dex:
    url: "https://swap-api.lcx.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "lcx-ag-lcx-liberty-dex": {
      "Transport": "http",
      "Url": "https://swap-api.lcx.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add lcx-ag-lcx-liberty-dex -t streamable-http -u 'https://swap-api.lcx.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "lcx-ag-lcx-liberty-dex": {
      "type": "http",
      "url": "https://swap-api.lcx.com/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.

### 2026-11-04 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 69, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [cosmetic] “get_price” reworded the description of “chainId”
- [cosmetic] “get_quote” reworded the description of “chainId”
- [cosmetic] “search_tokens” reworded the description of “chainId”

### 2026-10-31 (score 68, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [cosmetic] “get_price” reworded the description of “chainId”
- [cosmetic] “get_quote” reworded the description of “chainId”
- [cosmetic] “search_tokens” reworded the description of “chainId”

### 2026-10-29 (score 67, +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.

### 2026-10-26 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 65, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [cosmetic] “get_price” reworded the description of “chainId”
- [cosmetic] “get_quote” reworded the description of “chainId”
- [cosmetic] “search_tokens” reworded the description of “chainId”

### 2026-10-22 (score 64, 0)

- [security] Tool “get_my_usage” rewrote its description, which is the text the model reads
- [security] Tool “get_quote” rewrote its description, which is the text the model reads
- [security] Tool “list_chains” rewrote its description, which is the text the model reads
- [security] Tool “search_tokens” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: 160 → 267
- [functional improvement] Stability: unverified → 0.03
- [functional] Schema quality: good → excellent
- [cosmetic] “search_tokens” reworded the description of “limit”
- [cosmetic] “search_tokens” reworded the description of “search”

### 2026-10-21 (score 64)

First indexed and scored.

## MCP tools (5)

### `get_quote` (~401 tokens)

Best route and expected output for selling a specific amount of one token for another on one chain, priced from the pools LCX Liberty DEX indexes itself. Use it for what an amount would swap for; use get_price for a token's value, and search_tokens first to turn a ticker into an address. Read-only: it never executes a trade. Returns output.amount and output.minimumAmount (at 0.5% slippage) in tokenOut's base units, with output.decimals to scale them; priceImpactPct, gasFeeUSD, the venues and the per-hop routes; and blockNumber and expiresAt, since a quote is priced at one block and lives 120 seconds. When there is no quote, the result is an error that says why: no route between the two tokens, or liquidity too thin for this size, usually naming a size that would fill.

Input parameters:

- `amount` (string, required): Positive human amount of tokenIn to sell, e.g. "1.5". Scaled by the token's own decimals, which the server knows: do not send decimals.
- `chainId` (integer, required): 1 Ethereum, 8453 Base, 42161 Arbitrum One, 10 OP Mainnet, 4663 Robinhood Chain, 56 BNB Chain, 137 Polygon, 43114 Avalanche, 130 Unichain, 143 Monad, 5042 Arc, 999 HyperEVM, 59144 Linea, 57073 Ink, 48…
- `decimals` (integer): Optional, and best left out. Only for a token the index holds no decimals for; a value that disagrees with the token's own is refused (decimals_mismatch).
- `tokenIn` (string, required): Sell token address. Use the zero address for native ETH.
- `tokenOut` (string, required): Buy token address.

### `search_tokens` (~347 tokens)

Finds tokens on one chain by symbol, name or address, and gives the address get_quote and get_price need. Use it whenever you have a ticker or a name instead of an address. Read-only. Matching is case-insensitive on any part of the symbol, name or address; with no search it lists the chain's tokens. Results are ranked: the chain's curated tokens first, then other indexed tokens by how many pools hold them. A symbol is not unique, so when several match, prefer the verified one or the one with the most depth. Each result has address (the zero address for the native coin), symbol, name, decimals, verified, poolCount and depthUsd; hasMore says more matched than limit returned. A token refused for a transfer tax is left out unless its exact address is searched, which returns it with transferTaxBps.

Input parameters:

- `chainId` (integer, required): 1 Ethereum, 8453 Base, 42161 Arbitrum One, 10 OP Mainnet, 4663 Robinhood Chain, 56 BNB Chain, 137 Polygon, 43114 Avalanche, 130 Unichain, 143 Monad, 5042 Arc, 999 HyperEVM, 59144 Linea, 57073 Ink, 48…
- `limit` (integer): Max results to return. Default 10, at most 50.
- `search` (string): Any part of a symbol, name or address, case-insensitive, e.g. "usdc" or "0x833589". Leave it out to list the chain's tokens.

### `get_price` (~303 tokens)

USD price of one whole token on one chain, priced from the pools LCX Liberty DEX indexes itself (real depth, not a mid-market feed). Use it for a token's value; use get_quote for what a specific amount would swap for, and search_tokens first to turn a ticker into an address. Read-only. Returns usd, change24h (a ratio: 0.0123 is +1.23%), source, and the age of the pool state behind the price (asOfBlock, ageSeconds, stale). When there is no honest price, usd is null and reason says why (for example token_not_indexed or below_depth_floor) instead of an error.

Input parameters:

- `chainId` (integer, required): 1 Ethereum, 8453 Base, 42161 Arbitrum One, 10 OP Mainnet, 4663 Robinhood Chain, 56 BNB Chain, 137 Polygon, 43114 Avalanche, 130 Unichain, 143 Monad, 5042 Arc, 999 HyperEVM, 59144 Linea, 57073 Ink, 48…
- `token` (string, required): Token address on that chain. Use the zero address for the chain's native coin; on Arc, whose native coin is USDC, use its contract 0x3600000000000000000000000000000000000000.

### `list_chains` (~155 tokens)

Every chain LCX Liberty DEX serves, with the live health of its index. Call it to learn which chainId values the other tools accept and whether a chain is quoting right now, or to explain a refused or stale answer from get_quote or get_price. Read-only, takes no arguments, and does not count against the API key's quota. Each entry has chainId, key, name, nativeSymbol, wrappedNative, router (the address a swap approves), ready (fresh enough to build a swap), degraded (still quoting, prices indicative only), available, unavailableReason (why not, when it is not) and ageSeconds, how long since the index recorded a new block, judged against freshnessLimitSeconds.

### `get_my_usage` (~135 tokens)

Reads the calling API key's own plan and usage, so no key or account id is passed. Use it to answer questions about quota or throttling, or before a long run of calls. Read-only, live, and it does not count against the quota. Returns plan and planLabel; callsUsed, monthlyCalls and callsRemaining for the current billing period (monthlyCalls and callsRemaining are null when the plan has no cap); and rateLimit as perSecond and perMinute, where a slow request uses more than one. Only successful calls are counted, and at the limit calls are refused, never billed as overage.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/lcx-ag-lcx-liberty-dex/swap-api#diagnostics

## Score history

- 2026-11-05: 70
- 2026-11-04: 70
- 2026-11-03: 69
- 2026-11-02: 69
- 2026-11-01: 68
- 2026-10-31: 68
- 2026-10-30: 67
- 2026-10-29: 67
- 2026-10-28: 66
- 2026-10-27: 66
- 2026-10-26: 66
- 2026-10-25: 65
- 2026-10-24: 65
- 2026-10-23: 64
- 2026-10-22: 64
- 2026-10-21: 64

## Common questions

### What is the LCX Liberty DEX MCP server?

LCX Liberty DEX is an MCP server listed in the public MCP registry as io.github.LCX-AG/lcx-liberty-dex. Best-route swap quotes, token search and USD prices across EVM chains. Read-only, never trades. This page covers its hosted endpoint (https://swap-api.lcx.com/mcp).

### Is the LCX Liberty DEX MCP server safe to use?

LCX Liberty DEX scores 70 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 LCX Liberty DEX MCP server expose?

LCX Liberty DEX exposes 5 tools: get_quote, search_tokens, get_price, list_chains, get_my_usage. Their descriptions and schemas cost roughly 1,341 tokens of context every time the server is loaded.

### Does the LCX Liberty DEX MCP server require authentication?

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

### Is the LCX Liberty DEX MCP server still maintained?

LCX Liberty DEX 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://swap-api.lcx.com/mcp
- Authorisation metadata: https://swap-api.lcx.com/.well-known/oauth-protected-resource/mcp
- Website: https://dex.lcx.com/docs/mcp-server
- Changelog RSS feed: https://verifymcp.io/servers/lcx-ag-lcx-liberty-dex/swap-api.xml
- Changelog JSON feed: https://verifymcp.io/servers/lcx-ag-lcx-liberty-dex/swap-api.json
- HTML version of this page: https://verifymcp.io/servers/lcx-ag-lcx-liberty-dex/swap-api