# io.github.15998194110/delta-witness (npm · delta-witness-mcp)

Paid Capture and Guard tools for public-source observations before autonomous actions.

- Trust score: 86/100 (high trust)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- npm · `delta-witness-mcp`: 86/100 (this document), [markdown](https://verifymcp.io/servers/15998194110-delta-witness/delta-witness-mcp.md), [page](https://verifymcp.io/servers/15998194110-delta-witness/delta-witness-mcp)

## Channel facts

- Registry: `npm`
- Package: `delta-witness-mcp`
- Version: `0.7.1`
- 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 2026-09-21.

- **Supply Chain Security**: 99/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 31 of 114 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to 15998194110/delta-witness).
  - Clear OSI-approved license (Apache-2.0).
  - Actively maintained (last published 5 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 64/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 276 tokens (~69/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 70/100
  - Stability observed for 21 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 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 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.15998194110/delta-witness MCP server?

io.github.15998194110/delta-witness runs locally as an npm package, launched with npx -y delta-witness-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 15998194110-delta-witness -- npx -y delta-witness-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "15998194110-delta-witness": {
      "command": "npx",
      "args": [
        "-y",
        "delta-witness-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "15998194110-delta-witness": {
      "command": "npx",
      "args": [
        "-y",
        "delta-witness-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add 15998194110-delta-witness -- npx -y delta-witness-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "15998194110-delta-witness": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "delta-witness-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add 15998194110-delta-witness --command npx --arg -y --arg delta-witness-mcp
```

### Hermes

```yaml
mcp_servers:
  15998194110-delta-witness:
    command: "npx"
    args: ["-y", "delta-witness-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "15998194110-delta-witness": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "delta-witness-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add 15998194110-delta-witness -t stdio -c npx -a -y delta-witness-mcp
```

### Other

```json
{
  "mcpServers": {
    "15998194110-delta-witness": {
      "command": "npx",
      "args": [
        "-y",
        "delta-witness-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.

### 2026-09-21 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 84, +16)

- [security improvement] Malware scan: unverified → pass

### 2026-09-16 (score 68, −13)

- [security regression] Malware scan: pass → unverified
- [functional regression] Schema quality: 50 → 69
- [functional] Destructive annotations: 0 → pass
- [functional] Package version: 0.7.0 → 0.7.1

### 2026-09-13 (score 81, +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.

### 2026-09-11 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-09 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-07 (score 78, +4)

- [functional improvement] Stability: unverified → 0.23
- [functional] Package version: 0.6.1 → 0.7.0

## MCP tools (4)

### `delta_quote` (~28 tokens)

Quote DELTA observation

Get the current owner-authorized price before any payment is signed.

Input parameters:

- `product` (string)

### `delta_capture` (~70 tokens)

Capture public source

Capture costs 1 USDC. Requires the buyer's explicit DELTA_MAX_USD_PER_CALL approval of at least 1.00; pays exactly 1 USDC via x402. Preserves a public webpage and returns proof metadata and hashes; raw artifacts remain private.

Input parameters:

- `url` (string, required)

### `delta_preflight` (~143 tokens)

Public Preflight

Public Preflight costs 5 USDC. Requires the buyer's explicit DELTA_MAX_USD_PER_CALL approval of at least 5.00; pays exactly 5 USDC via x402. Compares public-source hashes/text before a consequential action. Safe means expectations matched, not that the source is true. This is not the 10 USDC Guarded-Action Pilot.

Input parameters:

- `contains` (array)
- `excludes` (array)
- `freshness_seconds` (integer)
- `html_sha256` (string)
- `markdown_sha256` (string)
- `prior_proof_id` (string)
- `url` (string, required)

### `delta_verify_proof` (~35 tokens)

Verify DELTA proof

Read public proof metadata, hashes, and manifest integrity status without exposing private raw artifacts.

Input parameters:

- `proof_id` (string, required)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/15998194110-delta-witness/delta-witness-mcp#diagnostics

## Score history

- 2026-09-21: 86
- 2026-09-20: 85
- 2026-09-19: 85
- 2026-09-18: 84
- 2026-09-17: 84
- 2026-09-16: 68
- 2026-09-15: 81
- 2026-09-14: 81
- 2026-09-13: 81
- 2026-09-12: 80
- 2026-09-11: 80
- 2026-09-10: 79
- 2026-09-09: 79
- 2026-09-08: 78
- 2026-09-07: 78
- 2026-09-06: 74
- 2026-09-05: 74
- 2026-09-04: 74
- 2026-09-03: 74
- 2026-09-02: 74
- 2026-09-01: 74
- 2026-08-31: 74

## Common questions

### What is the io.github.15998194110/delta-witness MCP server?

io.github.15998194110/delta-witness is an MCP server listed in the public MCP registry as io.github.15998194110/delta-witness. Paid Capture and Guard tools for public-source observations before autonomous actions. This page covers its npm package (delta-witness-mcp).

### Is the io.github.15998194110/delta-witness MCP server safe to use?

io.github.15998194110/delta-witness scores 86 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 21 September 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. 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.15998194110/delta-witness MCP server expose?

io.github.15998194110/delta-witness exposes 4 tools: delta_quote, delta_capture, delta_preflight, delta_verify_proof. Their descriptions and schemas cost roughly 276 tokens of context every time the server is loaded.

### Is the io.github.15998194110/delta-witness MCP server still maintained?

io.github.15998194110/delta-witness is still listed as active in the MCP registry. We last reached this channel on 21 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.15998194110/delta-witness MCP server under?

io.github.15998194110/delta-witness declares the Apache-2.0 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/delta-witness-mcp
- Socket report: https://socket.dev/npm/package/delta-witness-mcp
- Repository: https://github.com/15998194110/delta-witness
- Changelog RSS feed: https://verifymcp.io/servers/15998194110-delta-witness/delta-witness-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/15998194110-delta-witness/delta-witness-mcp.json
- HTML version of this page: https://verifymcp.io/servers/15998194110-delta-witness/delta-witness-mcp