# Chameleons (remote · chameleons.markets)

Polymarket traders checked for copy trading: 1–5★ or Can't copy. 90 d · modelled · not advice.

- Trust score: 72/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `chameleons.markets`: 72/100 (this document), [markdown](https://verifymcp.io/servers/markets-chameleons-polymarket/chameleons.md), [page](https://verifymcp.io/servers/markets-chameleons-polymarket/chameleons)

## Channel facts

- Endpoint: `https://chameleons.markets/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - 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**: 51/100
  - AI-judged instruction clarity (fair).
  - Context-footprint check failed: tool/resource definitions use about 1017 tokens (~169/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 92/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 76% 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 6 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 Chameleons MCP server?

Chameleons is a hosted endpoint at https://chameleons.markets/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 markets-chameleons-polymarket 'https://chameleons.markets/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "markets-chameleons-polymarket": {
      "url": "https://chameleons.markets/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "markets-chameleons-polymarket": {
      "type": "http",
      "url": "https://chameleons.markets/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.markets-chameleons-polymarket]
url = "https://chameleons.markets/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "markets-chameleons-polymarket": {
      "type": "remote",
      "url": "https://chameleons.markets/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add markets-chameleons-polymarket --url 'https://chameleons.markets/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  markets-chameleons-polymarket:
    url: "https://chameleons.markets/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "markets-chameleons-polymarket": {
      "Transport": "http",
      "Url": "https://chameleons.markets/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add markets-chameleons-polymarket -t streamable-http -u 'https://chameleons.markets/mcp'
```

### Other

```json
{
  "mcpServers": {
    "markets-chameleons-polymarket": {
      "type": "http",
      "url": "https://chameleons.markets/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 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 71, 0)

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

### 2026-11-02 (score 71, +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.

### 2026-10-30 (score 70, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “find_traders” rewrote its description, which is the text the model reads

### 2026-10-29 (score 69, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-28 (score 69)

First indexed and scored.

## MCP tools (6)

### `find_traders` (~449 tokens)

Find traders

Polymarket traders, filtered and sorted like the page; head lines say what applied and what the defaults hid. copyable: % of checked trades a follower could fill (n=checked); ret_lo: ROIC, profit per copy as % of stake, 80% low end (n=copy10_n; 4★+ needs a 90% one above 0); crowd: % copied within 2 s, upper bound (n=crowd_n). <=4 KB: the rows that fit; the rows line pages on.

Input parameters:

- `active_d` (string): traded within 7 or 30 days
- `cat` (string): category; children fold (iran → geopolitics)
- `checked` (integer): min checked trades
- `copy10_lo` (number): Copy / $10 low end above, USD (n ≥ 10)
- `copyable` (number): min Copyable %, 0–100
- `fields` (string): all, or a comma list of columns
- `format` (string)
- `hold_h` (number): max median hold, hours
- `kind` (string): bot, human or unclear
- `limit` (integer): rows, default 50; 0 = all
- `no` (string): keep rows checked clean of these flags, comma list
- `offset` (integer): rows to skip
- `q` (string): name, 0x address, 8-hex or Polymarket URL
- `ret_lo` (number): ROIC 80% low end above, %
- `sort` (string): stars (default: then ret_shrunk), ret_lo, copyable, wk or hold_h; rated first
- `stars` (string): min stars 1–5, or all; default 2
- `state` (string): rated, too_few or cant_copy
- `uncrowded` (string): 1: crowd <= 20%, 0: over
- `url` (string): a chameleons.markets list URL instead
- `wk` (number): min copyable trades a week

### `get_trader` (~75 tokens)

One trader

One trader: a row per category, rule check, radar with n, stars history, 5 newest trades. <=2 KB.

Input parameters:

- `cat` (string)
- `format` (string)
- `trader` (string, required): slug, 0x wallet, 8-hex, Polymarket URL or name

### `list_categories` (~34 tokens)

Categories

Rows per category at each stars level, plus the page's chip counts. <=800 B.

Input parameters:

- `format` (string)

### `explain_rating` (~62 tokens)

Rating rule

The 1-5★ rule; with trader, that trader's check per level, radar and stars history. <=1.5 KB.

Input parameters:

- `cat` (string)
- `format` (string)
- `trader` (string): as get_trader

### `get_copy_recipe` (~60 tokens)

Agent recipe

One trader's copy recipe for your own agent (/traders/<slug>/copy.md): watch, rules, costs, YAML. Not advice. <=5 KB.

Input parameters:

- `cat` (string)
- `trader` (string, required): as get_trader

### `get_bot_guide` (~32 tokens)

Bot guide

How to build a copy bot and steer it with find_traders' filters (/bots.md). Not advice.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/markets-chameleons-polymarket/chameleons#diagnostics

## Score history

- 2026-11-05: 72
- 2026-11-04: 72
- 2026-11-03: 71
- 2026-11-02: 71
- 2026-11-01: 70
- 2026-10-31: 70
- 2026-10-30: 70
- 2026-10-29: 69
- 2026-10-28: 69

## Common questions

### What is the Chameleons MCP server?

Chameleons is an MCP server listed in the public MCP registry as markets.chameleons/polymarket. Polymarket traders checked for copy trading: 1–5★ or Can't copy. 90 d · modelled · not advice. This page covers its hosted endpoint (https://chameleons.markets/mcp).

### Is the Chameleons MCP server safe to use?

Chameleons scores 72 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 Chameleons MCP server expose?

Chameleons exposes 6 tools: find_traders, get_trader, list_categories, explain_rating, get_copy_recipe, get_bot_guide. Their descriptions and schemas cost roughly 712 tokens of context every time the server is loaded.

### Does the Chameleons MCP server require authentication?

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

### Is the Chameleons MCP server still maintained?

Chameleons 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://chameleons.markets/mcp
- Website: https://chameleons.markets/agents?ref=mcp-registry
- Changelog RSS feed: https://verifymcp.io/servers/markets-chameleons-polymarket/chameleons.xml
- Changelog JSON feed: https://verifymcp.io/servers/markets-chameleons-polymarket/chameleons.json
- HTML version of this page: https://verifymcp.io/servers/markets-chameleons-polymarket/chameleons