# Paired-Twin Change Trials (remote · textforagents.com)

Checkpoint-paired twin trials for agent fleet changes with blinded verdicts.

- Trust score: 57/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `textforagents.com`: 57/100 (this document), [markdown](https://verifymcp.io/servers/com-textforagents-paired-twin-change-trials-for-agents/products-paired-twin-change-trials-for-agents-mcp.md), [page](https://verifymcp.io/servers/com-textforagents-paired-twin-change-trials-for-agents/products-paired-twin-change-trials-for-agents-mcp)

## Channel facts

- Endpoint: `https://textforagents.com/products/paired-twin-change-trials-for-agents/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 2026-10-23.

- **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 7 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**: 49/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 309 tokens (~44/item across 7 items; 7 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% 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**: 40/100
  - Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28.

## Install

### How do I install the Paired-Twin Change Trials MCP server?

Paired-Twin Change Trials is a hosted endpoint at https://textforagents.com/products/paired-twin-change-trials-for-agents/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 com-textforagents-paired-twin-change-trials-for- 'https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-textforagents-paired-twin-change-trials-for-": {
      "url": "https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-textforagents-paired-twin-change-trials-for-": {
      "type": "http",
      "url": "https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-textforagents-paired-twin-change-trials-for-]
url = "https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-textforagents-paired-twin-change-trials-for-": {
      "type": "remote",
      "url": "https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-textforagents-paired-twin-change-trials-for- --url 'https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-textforagents-paired-twin-change-trials-for-:
    url: "https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-textforagents-paired-twin-change-trials-for-": {
      "Transport": "http",
      "Url": "https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-textforagents-paired-twin-change-trials-for- -t streamable-http -u 'https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-textforagents-paired-twin-change-trials-for-": {
      "type": "http",
      "url": "https://textforagents.com/products/paired-twin-change-trials-for-agents/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.

### 2026-10-23 (score 57, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-22 (score 57)

First indexed and scored.

## MCP tools (7)

### `trial_register_protocol` (~52 tokens)

Register a hash-bound trial protocol; twins fork from the identical checkpoint, exactly one registered variable may differ.

Input parameters:

- `checkpoint` (object, required)
- `protocol` (object, required)
- `treated_config` (object, required)

### `trial_fork_pair` (~41 tokens)

Fork a checkpoint-paired assignment for one task (blinded arms A/B).

Input parameters:

- `task` (object, required)
- `trial_id` (string, required)

### `trial_run_pair` (~51 tokens)

Run one pair with the deterministic scripted agent and score blind. $0.25/pair, first 10 free once per operator.

Input parameters:

- `task` (object, required)
- `trial_id` (string, required)

### `trial_submit_outputs` (~65 tokens)

Submit the operator twins' outputs for one pair; blinded deterministic scoring. $0.25/pair, first 10 free once per operator.

Input parameters:

- `control_output` (required)
- `task` (object, required)
- `treated_output` (required)
- `trial_id` (string, required)

### `trial_score` (~45 tokens)

Alias of trial_submit_outputs (blinded scoring).

Input parameters:

- `control_output` (required)
- `task` (object, required)
- `treated_output` (required)
- `trial_id` (string, required)

### `trial_verdict` (~25 tokens)

Trial verdict under the enforced stopping rule.

Input parameters:

- `trial_id` (string, required)

### `trial_unblind` (~30 tokens)

Unblind after the verdict; hashed signed receipt covering every pair.

Input parameters:

- `trial_id` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-textforagents-paired-twin-change-trials-for-agents/products-paired-twin-change-trials-for-agents-mcp#diagnostics

## Score history

- 2026-10-23: 57
- 2026-10-22: 57

## Common questions

### What is the Paired-Twin Change Trials MCP server?

Paired-Twin Change Trials is an MCP server listed in the public MCP registry as com.textforagents/paired-twin-change-trials-for-agents. Checkpoint-paired twin trials for agent fleet changes with blinded verdicts. This page covers its hosted endpoint (https://textforagents.com/products/paired-twin-change-trials-for-agents/mcp).

### Is the Paired-Twin Change Trials MCP server safe to use?

Paired-Twin Change Trials scores 57 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 Paired-Twin Change Trials MCP server expose?

Paired-Twin Change Trials exposes 7 tools: trial_register_protocol, trial_fork_pair, trial_run_pair, trial_submit_outputs, trial_score, and 2 more. Their descriptions and schemas cost roughly 309 tokens of context every time the server is loaded.

### Does the Paired-Twin Change Trials MCP server require authentication?

No. We connected to Paired-Twin Change Trials without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Paired-Twin Change Trials MCP server still maintained?

Paired-Twin Change Trials is still listed as active in the MCP registry. We last reached this channel on 23 October 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://textforagents.com/products/paired-twin-change-trials-for-agents/mcp
- Changelog RSS feed: https://verifymcp.io/servers/com-textforagents-paired-twin-change-trials-for-agents/products-paired-twin-change-trials-for-agents-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-textforagents-paired-twin-change-trials-for-agents/products-paired-twin-change-trials-for-agents-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-textforagents-paired-twin-change-trials-for-agents/products-paired-twin-change-trials-for-agents-mcp