# io.github.BARRYPMARSHALL/witnessed (npm · witnessed-sdk)

Signed, reproducible market facts for agents, verifiable without trust.

- Trust score: 61/100 (medium)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- npm · `witnessed-sdk`: 61/100 (this document), [markdown](https://verifymcp.io/servers/barrypmarshall-witnessed/witnessed-sdk.md), [page](https://verifymcp.io/servers/barrypmarshall-witnessed/witnessed-sdk)

## Channel facts

- Registry: `npm`
- Package: `witnessed-sdk`
- Version: `0.2.0`
- 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 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **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**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 239 tokens (~47/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 20/100
  - Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the io.github.BARRYPMARSHALL/witnessed MCP server?

io.github.BARRYPMARSHALL/witnessed runs locally as an npm package, launched with npx -y witnessed-sdk. 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 barrypmarshall-witnessed -- npx -y witnessed-sdk
```

### Cursor

```json
{
  "mcpServers": {
    "barrypmarshall-witnessed": {
      "command": "npx",
      "args": [
        "-y",
        "witnessed-sdk"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "barrypmarshall-witnessed": {
      "command": "npx",
      "args": [
        "-y",
        "witnessed-sdk"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add barrypmarshall-witnessed -- npx -y witnessed-sdk
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add barrypmarshall-witnessed --command npx --arg -y --arg witnessed-sdk
```

### Hermes

```yaml
mcp_servers:
  barrypmarshall-witnessed:
    command: "npx"
    args: ["-y", "witnessed-sdk"]
```

### Netclaw

```json
{
  "McpServers": {
    "barrypmarshall-witnessed": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "witnessed-sdk"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add barrypmarshall-witnessed -t stdio -c npx -a -y witnessed-sdk
```

### Other

```json
{
  "mcpServers": {
    "barrypmarshall-witnessed": {
      "command": "npx",
      "args": [
        "-y",
        "witnessed-sdk"
      ]
    }
  }
}
```

## 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.

### 2026-10-21 (score 61, +26)

- [security improvement] Malware scan: unverified → pass
- [security improvement] Known CVEs: unverified → pass
- [functional improvement] Dependency health: unverified → pass

### 2026-10-20 (score 35)

First indexed and scored.

## MCP tools (5)

### `witnessed_feed` (~40 tokens)

Signed market facts (MA333, sigma bands, ATR on closed 4h bars) with the evidence block needed to recompute every figure. Returns JSON.

### `witnessed_verify` (~40 tokens)

Independently verify the published feed: canonical bytes, Ed25519 signature against the publisher did:key, and freshness. Use this before trusting any number from it.

### `witnessed_listings` (~28 tokens)

Curated listings with their evidence. Currently verified Tasmanian business data and physical survey work.

### `witnessed_market` (~46 tokens)

Every listing on the open market, each self-signed by its publisher, with its purchase endpoint, price and delivery contract. Verify a listing against listing.publisher; do not trust the catalogue.

### `witnessed_receipt_verify` (~85 tokens)

Verify a delivery receipt: Ed25519 signature against the delivery did:key, plus the sha256 of the body you actually received. Call this before acting on purchased data.

Input parameters:

- `body` (string): The delivered bytes, to check the hash
- `signed` (object, required): The {receipt, signature} object from the X-DELIVERY-RECEIPT header

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/barrypmarshall-witnessed/witnessed-sdk#diagnostics

## Score history

- 2026-11-05: 61
- 2026-11-04: 61
- 2026-11-03: 61
- 2026-11-02: 61
- 2026-11-01: 61
- 2026-10-31: 61
- 2026-10-30: 61
- 2026-10-29: 61
- 2026-10-28: 61
- 2026-10-27: 61
- 2026-10-26: 61
- 2026-10-25: 61
- 2026-10-24: 61
- 2026-10-23: 61
- 2026-10-22: 61
- 2026-10-21: 61
- 2026-10-20: 35

## Common questions

### What is the io.github.BARRYPMARSHALL/witnessed MCP server?

io.github.BARRYPMARSHALL/witnessed is an MCP server listed in the public MCP registry as io.github.BARRYPMARSHALL/witnessed. Signed, reproducible market facts for agents, verifiable without trust. This page covers its npm package (witnessed-sdk).

### Is the io.github.BARRYPMARSHALL/witnessed MCP server safe to use?

io.github.BARRYPMARSHALL/witnessed scores 61 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 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.BARRYPMARSHALL/witnessed MCP server expose?

io.github.BARRYPMARSHALL/witnessed exposes 5 tools: witnessed_feed, witnessed_verify, witnessed_listings, witnessed_market, witnessed_receipt_verify. Their descriptions and schemas cost roughly 239 tokens of context every time the server is loaded.

### Is the io.github.BARRYPMARSHALL/witnessed MCP server still maintained?

io.github.BARRYPMARSHALL/witnessed 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.

### What licence is the io.github.BARRYPMARSHALL/witnessed MCP server under?

io.github.BARRYPMARSHALL/witnessed 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/witnessed-sdk
- Socket report: https://socket.dev/npm/package/witnessed-sdk
- Website: https://api.witnessed.workers.dev/
- Changelog RSS feed: https://verifymcp.io/servers/barrypmarshall-witnessed/witnessed-sdk.xml
- Changelog JSON feed: https://verifymcp.io/servers/barrypmarshall-witnessed/witnessed-sdk.json
- HTML version of this page: https://verifymcp.io/servers/barrypmarshall-witnessed/witnessed-sdk