# io.github.mineloop99/fillgate (npm · @fillgate/mcp)

Fee-carrying trading tools for AI agents: Jupiter Ultra, Polymarket CLOB v2, Hyperliquid perps.

- Trust score: 68/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- npm · `@fillgate/mcp`: 68/100 (this document), [markdown](https://verifymcp.io/servers/mineloop99-fillgate/fillgate-mcp.md), [page](https://verifymcp.io/servers/mineloop99-fillgate/fillgate-mcp)

## Channel facts

- Registry: `npm`
- Package: `@fillgate/mcp`
- Version: `0.3.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, 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 2026-09-20.

- **Supply Chain Security**: 90/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects toml 3.0.0, reached via @jup-ag/referral-sdk > @coral-xyz/anchor > toml. A fixed version is available.
  - No install/post-install scripts declared.
  - 45 of 168 dependencies flagged as unhealthy (2 deprecated).
- **Provenance & Transparency**: 19/100
  - Repository check failed: the declared repository URL returned HTTP 404.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 15 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 72/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 489 tokens (~69/item across 7 items; 7 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 53/100
  - Stability observed for 16 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 89/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 67% 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 7 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 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 io.github.mineloop99/fillgate MCP server?

io.github.mineloop99/fillgate runs locally as an npm package, launched with npx -y @fillgate/mcp. 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 mineloop99-fillgate -- npx -y @fillgate/mcp
```

### Cursor

```json
{
  "mcpServers": {
    "mineloop99-fillgate": {
      "command": "npx",
      "args": [
        "-y",
        "@fillgate/mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "mineloop99-fillgate": {
      "command": "npx",
      "args": [
        "-y",
        "@fillgate/mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add mineloop99-fillgate -- npx -y @fillgate/mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mineloop99-fillgate": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@fillgate/mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mineloop99-fillgate --command npx --arg -y --arg @fillgate/mcp
```

### Hermes

```yaml
mcp_servers:
  mineloop99-fillgate:
    command: "npx"
    args: ["-y", "@fillgate/mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "mineloop99-fillgate": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@fillgate/mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add mineloop99-fillgate -t stdio -c npx -a -y @fillgate/mcp
```

### Other

```json
{
  "mcpServers": {
    "mineloop99-fillgate": {
      "command": "npx",
      "args": [
        "-y",
        "@fillgate/mcp"
      ]
    }
  }
}
```

## 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.

### 2026-09-19 (score 68, +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.

### 2026-09-17 (score 67, +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.

### 2026-09-14 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 65, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-09-04 (score 61)

First indexed and scored.

## MCP tools (7)

### `fillgate_status` (~24 tokens)

Show fee codes, guardrails and which venues are enabled. Call first.

### `jup_quote` (~154 tokens)

Quote a Solana swap on Jupiter Ultra (no transaction). Shows our referral fee and warnings.

Input parameters:

- `amount` (string, required): Raw amount in the input mint smallest unit, as a positive integer string
- `inputMint` (string, required): Input token mint (e.g. USDC EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v)
- `notionalUsdHint` (number): USD notional if neither leg is a stablecoin and the API returns no USD value
- `outputMint` (string, required): Output token mint (wSOL So11111111111111111111111111111111111111112)

### `jup_prepare` (~159 tokens)

Prepare a swap for the operator wallet. Returns preparedId + preview; execute with jup_swap within 120s.

Input parameters:

- `amount` (string, required): Raw amount in the input mint smallest unit, as a positive integer string
- `inputMint` (string, required): Input token mint (e.g. USDC EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v)
- `notionalUsdHint` (number): USD notional if neither leg is a stablecoin and the API returns no USD value
- `outputMint` (string, required): Output token mint (wSOL So11111111111111111111111111111111111111112)

### `jup_swap` (~33 tokens)

Sign and execute a prepared Jupiter swap. Blocked while DRY_RUN=true.

Input parameters:

- `preparedId` (string, required)

### `portfolio` (~15 tokens)

Operator balances/positions across enabled venues.

### `fee_ledger` (~38 tokens)

Fees earned per venue from our own fill log, plus where to reconcile each venue against its own dashboard.

Input parameters:

- `sinceIso` (string)

### `stats` (~66 tokens)

Routed volume, fills, est. fees, unique users and top guard-rejection codes from the ledger. `since` accepts "7d"/"24h"/"30m"/"all" (default "all").

Input parameters:

- `since` (string)
- `venue` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Vulnerabilities, Dependencies. The full working is on the page: https://verifymcp.io/servers/mineloop99-fillgate/fillgate-mcp#diagnostics

## Score history

- 2026-09-20: 68
- 2026-09-19: 68
- 2026-09-18: 67
- 2026-09-17: 67
- 2026-09-16: 66
- 2026-09-15: 66
- 2026-09-14: 66
- 2026-09-13: 65
- 2026-09-12: 65
- 2026-09-11: 61
- 2026-09-10: 61
- 2026-09-09: 61
- 2026-09-08: 61
- 2026-09-07: 61
- 2026-09-06: 61
- 2026-09-05: 61
- 2026-09-04: 61

## Common questions

### What is the io.github.mineloop99/fillgate MCP server?

io.github.mineloop99/fillgate is an MCP server listed in the public MCP registry as io.github.mineloop99/fillgate. Fee-carrying trading tools for AI agents: Jupiter Ultra, Polymarket CLOB v2, Hyperliquid perps. This page covers its npm package (@fillgate/mcp).

### Is the io.github.mineloop99/fillgate MCP server safe to use?

io.github.mineloop99/fillgate scores 68 out of 100 on VerifyMCP. We recorded 8 known advisories against it as of 20 September 2026. It declares no install or post-install scripts. 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 io.github.mineloop99/fillgate MCP server expose?

io.github.mineloop99/fillgate exposes 7 tools: fillgate_status, jup_quote, jup_prepare, jup_swap, portfolio, and 2 more. Their descriptions and schemas cost roughly 489 tokens of context every time the server is loaded.

### Is the io.github.mineloop99/fillgate MCP server still maintained?

io.github.mineloop99/fillgate is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the io.github.mineloop99/fillgate MCP server under?

io.github.mineloop99/fillgate declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@fillgate/mcp
- Socket report: https://socket.dev/npm/package/@fillgate/mcp
- Changelog RSS feed: https://verifymcp.io/servers/mineloop99-fillgate/fillgate-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/mineloop99-fillgate/fillgate-mcp.json
- HTML version of this page: https://verifymcp.io/servers/mineloop99-fillgate/fillgate-mcp