# io.github.gopalrajsuresh/covalent-bond (npm · covalent-bond)

Peer-to-peer, end-to-end-encrypted collaboration channel for AI coding agents over MCP.

- Trust score: 70/100 (medium)
- Change this week: +24
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `covalent-bond`: 70/100 (this document), [markdown](https://verifymcp.io/servers/gopalrajsuresh-covalent-bond/covalent-bond.md), [page](https://verifymcp.io/servers/gopalrajsuresh-covalent-bond/covalent-bond)

## Channel facts

- Registry: `npm`
- Package: `covalent-bond`
- Version: `0.1.2`
- 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 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 13 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 622 tokens (~69/item across 9 items; 9 tools + 0 resources), lean.
  - 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**: 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.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add gopalrajsuresh-covalent-bond -- npx -y covalent-bond
```

### Codex

```bash
codex mcp add gopalrajsuresh-covalent-bond -- npx -y covalent-bond
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add gopalrajsuresh-covalent-bond --command npx --arg -y --arg covalent-bond
```

### Hermes

```yaml
mcp_servers:
  gopalrajsuresh-covalent-bond:
    command: "npx"
    args: ["-y", "covalent-bond"]
```

### Other

```json
{
  "mcpServers": {
    "gopalrajsuresh-covalent-bond": {
      "command": "npx",
      "args": [
        "-y",
        "covalent-bond"
      ]
    }
  }
}
```

## 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.

### 2026-08-03 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 69, +48)

- [security regression] Provenance: unverified → fail
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] Stability: unverified → 0.23
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] License: unverified → pass
- [functional improvement] Schema quality: unverified → excellent
- [functional] Licence: MIT

### 2026-08-01 (score 21, −5)

- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Capabilities: pass → unverified

### 2026-07-31 (score 26, −20)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 46, +22)

- [functional improvement] Tool coverage: unverified → 100

### 2026-07-28 (score 24, −22)

- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-27 (score 46)

First indexed and scored.

## MCP tools (9)

### `bond_connect` (~33 tokens)

Create a new Covalent Bond session and get a shareable session code. The other agent will use this code to join.

### `bond_join` (~116 tokens)

Join an existing Covalent Bond session using a session code (format: XXXX-XXXX-XXXX Base58, e.g., "3KPz-QR7m-8WXn"). Call this when the user provides a session code from another agent. The code is a shared secret - it authenticates the encrypted channel and is never sent to the relay.

Input parameters:

- `sessionCode` (string, required): Session code in format XXXX-XXXX-XXXX (Base58, e.g., "3KPz-QR7m-8WXn")

### `bond_send` (~88 tokens)

Send a file to the connected agent. File will be encrypted and delivered with an optional message. Subject to 10-second rate limit and security validation (file type whitelist, 256KB default size limit, configurable via COVALENT_MAX_FILE_KB).

Input parameters:

- `filepath` (string, required): Absolute path to file to send
- `message` (string): Optional message to recipient explaining the file context

### `bond_accept` (~52 tokens)

Accept a pending file transfer. File will be written to ~/.covalent/incoming/ and its content returned, wrapped in untrusted-data markers.

Input parameters:

- `transferId` (string, required): Transfer ID from the consent prompt

### `bond_decline` (~41 tokens)

Decline a pending file transfer. File will be discarded and sender will not be notified.

Input parameters:

- `transferId` (string, required): Transfer ID from the consent prompt

### `bond_message` (~68 tokens)

Send a short encrypted text message to the connected agent (no file involved). Use this for agent-to-agent conversation: questions, context, summaries. Requires a confirmed session. Max 4000 characters.

Input parameters:

- `content` (string, required): Message text to send to the peer (max 4000 characters)

### `bond_wait` (~144 tokens)

Wait (long-poll) until the next event arrives from the peer (a message, incoming file, or disconnect) or until the timeout passes. Use this in a loop to hold a live conversation with the other agent: call bond_wait, react to what it returns, reply, call bond_wait again. Returns immediately if events are already queued. This costs tokens per call, so loop only during an active conversation; for idle waiting rely on desktop notifications and bond_status.

Input parameters:

- `timeoutSeconds` (number): How long to wait before returning if nothing arrives (default 50, min 1, max 300; note some MCP clients cap tool calls at 60s)

### `bond_status` (~55 tokens)

Get current Covalent Bond connection status: session info, handshake state, pending file transfers, and any events (incoming transfers, peer messages) that arrived since the last tool call. Call this periodically while connected to pick up incoming transfers.

### `bond_end` (~25 tokens)

End the current Covalent Bond session and disconnect from relay. Clears all pending transfers.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/gopalrajsuresh-covalent-bond/covalent-bond#diagnostics

## Score history

- 2026-08-03: 70
- 2026-08-02: 69
- 2026-08-01: 21
- 2026-07-31: 26
- 2026-07-30: 46
- 2026-07-28: 24
- 2026-07-27: 46

## Links

- npm package: https://www.npmjs.com/package/covalent-bond
- Socket report: https://socket.dev/npm/package/covalent-bond
- Repository: https://github.com/gopalrajsuresh/covalent-bond
- Changelog RSS feed: https://verifymcp.io/servers/gopalrajsuresh-covalent-bond/covalent-bond/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/gopalrajsuresh-covalent-bond/covalent-bond/changelog.json
- HTML version of this page: https://verifymcp.io/servers/gopalrajsuresh-covalent-bond/covalent-bond