Is io.github.srotzin/hive-mcp-barter safe to use?

io.github.srotzin/hive-mcp-barter has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install io.github.srotzin/hive-mcp-barter?

io.github.srotzin/hive-mcp-barter supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can io.github.srotzin/hive-mcp-barter do?

io.github.srotzin/hive-mcp-barter provides 3 tools: barter_discover, barter_quote_curve, barter_arbitrage_book. See the full tools list on the server page for descriptions and parameters.

What AI clients work with io.github.srotzin/hive-mcp-barter?

io.github.srotzin/hive-mcp-barter is compatible with claude-desktop, cursor, claude-code. It uses stdio transport.

Is io.github.srotzin/hive-mcp-barter actively maintained?

io.github.srotzin/hive-mcp-barter is actively maintained — last commit was 26 days ago.

io.github.srotzin/hive-mcp-barter

npm

Multi-party agent barter — non-cash capability exchange with cryptographic receipts

15.5M/wk 3 tools GitHub npm

No known CVEs

MIT license

Actively maintained

Last commit 26d ago

Works with most clients

Transport:

3 tools · ~180 tok

Grade A · 0.1% of 200K ctx

MCPpedia last refreshed this data 12h ago

Edit this pageView history

io.github.srotzin/hive-mcp-barter is an MCP server that multi-party agent barter — non-cash capability exchange with cryptographic receipts. Its tool list has not been published yet, requires no API key, and scores 86/100 on MCPpedia's security, maintenance and efficiency rubric.

Other

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-srotzin-hive-mcp-barter": {
      "args": [
        "-y",
        "npm"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-srotzin-hive-mcp-barter)](https://mcppedia.org/s/io-github-srotzin-hive-mcp-barter)

Read me

What io.github.srotzin/hive-mcp-barter does

Outbound 402 arbitrage agent — Hive Civilization

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'npm' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

86/100across 5 weighted dimensions

How we score →

0255075100

−14

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

8 fixed

CVE-2022-29244high · fixedCVSS 7.5

Packing does not respect root-level ignore files in workspaces

### Impact `npm pack` ignores root-level `.gitignore` & `.npmignore` file exclusion directives when run in a workspace or with a workspace flag (ie. `--workspaces`, `--workspace=<name>`). Anyone who has run `npm pack` or `npm publish` with workspaces, as of [v7.9.0](https://github.com/npm/cli/releases/tag/v7.9.0) & [v7.13.0](https://github.com/npm/cli/releases/tag/v7.13.0) respectively, may be affected and have published files into the npm registry they did not intend to include. ### Patch - Up

Affected: >= 7.9.0Fixed in 8.11.0source →

CVE-2018-7408high · fixedCVSS 7.8

Incorrect Permission Assignment for Critical Resource in NPM

An issue was discovered in an npm 5.7.0 2018-02-21 pre-release (marked as "next: 5.7.0" and therefore automatically installed by an "npm upgrade -g npm" command, and also announced in the vendor's blog without mention of pre-release status). It might allow local users to bypass intended filesystem access restrictions because ownerships of /etc and /usr directories are being changed unexpectedly, related to a "correctMkdir" issue.

Affected: >= 0Fixed in 5.7.1source →

CVE-2013-4116low · fixed

Local Privilege Escalation in npm

Affected versions of `npm` use predictable temporary file names during archive unpacking. If an attacker can create a symbolic link at the location of one of these temporary file names, the attacker can arbitrarily write to any file that the user which owns the `npm` process has permission to write to, potentially resulting in local privilege escalation. ## Recommendation Update to version 1.3.3 or later.

Affected: >= 0Fixed in 1.3.3source →

CVE-2020-15095medium · fixedCVSS 4.4

npm CLI exposing sensitive information through logs

Versions of the npm CLI prior to 6.14.6 are vulnerable to an information exposure vulnerability through log files. The CLI supports URLs like `<protocol>://[<user>[:<password>]@]<hostname>[:<port>][:][/]<path>`. The password value is not redacted and is printed to stdout and also to any generated log files.

Affected: >= 0Fixed in 6.14.6source →

CVE-2019-16777high · fixedCVSS 7.7

npm Vulnerable to Global node_modules Binary Overwrite

Versions of the npm CLI prior to 6.13.4 are vulnerable to a Global node_modules Binary Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. For example, if a package was installed globally and created a `serve` binary, any subsequent installs of packages that also create a `serve` binary would overwrite the first binary. This will not overwrite system binaries but only binaries put into the global node_modules directory. This b

Affected: >= 0Fixed in 6.13.4source →

Inventory

Tools (3)

Click any tool to inspect its schema.

~180 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.srotzin/hive-mcp-barter safe to use?: io.github.srotzin/hive-mcp-barter has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install io.github.srotzin/hive-mcp-barter?: io.github.srotzin/hive-mcp-barter supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.srotzin/hive-mcp-barter do?: io.github.srotzin/hive-mcp-barter provides 3 tools: barter_discover, barter_quote_curve, barter_arbitrage_book. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.srotzin/hive-mcp-barter?: io.github.srotzin/hive-mcp-barter is compatible with claude-desktop, cursor, claude-code. It uses stdio transport.
Is io.github.srotzin/hive-mcp-barter actively maintained?: io.github.srotzin/hive-mcp-barter is actively maintained — last commit was 26 days ago.

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MCP Security Weekly

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Community

Discussion

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Other

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-srotzin-hive-mcp-barter": {
      "args": [
        "-y",
        "npm"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-srotzin-hive-mcp-barter)](https://mcppedia.org/s/io-github-srotzin-hive-mcp-barter)

Read me

What io.github.srotzin/hive-mcp-barter does

Outbound 402 arbitrage agent — Hive Civilization

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'npm' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

hive-mcp-barter

Outbound 402 arbitrage agent — Hive Civilization

Probes 402-enabled MCP endpoints, counter-offers below asking, and settles when the spread clears our resale floor. Pure protocol — no DMs, no spam. Attribution headers on every request.

Council provenance: Ad-hoc, user-promoted 2026-04-27 (Tier A position 1).

What this is

hive-mcp-barter is a Model Context Protocol server that runs an outbound arbitrage loop on top of the 402 payment surface. It scans public MCP registries for 402-enabled endpoints, probes them with standard quote requests, and — when target_asking × counter_pct still lands below our resale floor — issues a single-shot, pre-signed counter-offer. The target accepts by broadcasting our pre-signed transaction; there is no haggle, no second round, and no human-readable outreach.

Protocol: MCP 2024-11-05 over Streamable-HTTP / JSON-RPC 2.0
Transport: POST /mcp
Discovery: GET /.well-known/mcp.json
Health: GET /health
Settlement: USDC on Base L2 — real rails, no mock, no simulated
Brand gold: Pantone 1245 C / #C08D23

Tools

Tool	Tier	Description
`barter_discover`	0 (free)	List 402-enabled MCP endpoints from a public registry (glama, smithery, mcp.so) with last-seen asking prices.
`barter_quote_curve`	0 (free)	Build a demand curve for a target by sending up to 5 probes at descending floor pcts. Returns the reservation-price estimate.
`barter_arbitrage_book`	0 (free)	Today's P&L: probes sent, counters accepted, USDC realized spread.

REST endpoints

Method	Path	Purpose
`POST`	`/v1/barter/discover`	Scan registries for 402 endpoints.
`POST`	`/v1/barter/probe`	Send a 402-style quote request to a target.
`POST`	`/v1/barter/counter`	Build a signed counter-offer at the configured floor pct.
`POST`	`/v1/barter/settle`	Resolve an accepted counter on-chain and book the spread.
`GET`	`/v1/barter/ledger`	Running P&L, attempts, wins, spread.
`GET`	`/v1/barter/today`	Today aggregate (Tier 0, free).
`GET`	`/health`	Service health.

Counter-offer envelope

{
  "x402_version": 1,
  "intent": "counter_offer",
  "originator_did": "did:hive:morph",
  "asking_seen_usd": "0.05",
  "offer_usd": "0.0325",
  "offer_atomic_usdc_base": "32500",
  "tx_pre_signed": "0x...",
  "expires": "2026-04-27T20:30:00Z",
  "attribution": {
    "agent": "hive-mcp-barter",
    "attribution_id": "barter-{uuid}",
    "policy": "single-shot-no-haggle"
  }
}

The pre-signed transaction is the entire commitment. The target accepts by broadcasting; we never have to re-sign on accept.

Resale floor

Category	Our buy floor	Our resell
LLM tokens	$0.000020 / token	$0.000040 / token
Oracle reads	$0.0008 / read	$0.0015 / read
Storage writes	$0.00012 / write	$0.00025 / write
KYC checks	$0.04 / check	$0.08 / check

If target_asking × counter_pct ≤ our_resell × 0.95, we counter. Otherwise we skip — there is no margin.

Risk controls

Cap	Value
Max single counter	$0.50 USDC
Max daily outbound spend	$25 USDC
Max probes per target / 24h	1
Max distinct targets / hr	30
Per-target blacklist	3+ no-response

All caps fail-closed. Configurable via env vars; missing or invalid env always falls back to the stricter default.

Configuration

Env	Required	Default	Notes
`PORT`	no	`3000`
`ENABLE_OUTBOUND`	no	`false`	Default-off. The 5-min cron loop only runs when set to `true`.
`WALLET_ADDRESS`	no	`0x15184…436e`	W1 MONROE on Base.
`USDC_BASE`	no	`0x833589…2913`	USDC contract on Base.
`BASE_RPC`	no	`https://mainnet.base.o

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

86/100across 5 weighted dimensions

How we score →

0255075100

−14

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

8 fixed

CVE-2022-29244high · fixedCVSS 7.5

Packing does not respect root-level ignore files in workspaces

Affected: >= 7.9.0Fixed in 8.11.0source →

CVE-2018-7408high · fixedCVSS 7.8

Incorrect Permission Assignment for Critical Resource in NPM

Affected: >= 0Fixed in 5.7.1source →

CVE-2013-4116low · fixed

Local Privilege Escalation in npm

Affected: >= 0Fixed in 1.3.3source →

CVE-2020-15095medium · fixedCVSS 4.4

npm CLI exposing sensitive information through logs

Affected: >= 0Fixed in 6.14.6source →

CVE-2019-16777high · fixedCVSS 7.7

npm Vulnerable to Global node_modules Binary Overwrite

Affected: >= 0Fixed in 6.13.4source →

Inventory

Tools (3)

Click any tool to inspect its schema.

~180 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.srotzin/hive-mcp-barter safe to use?: io.github.srotzin/hive-mcp-barter has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install io.github.srotzin/hive-mcp-barter?: io.github.srotzin/hive-mcp-barter supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.srotzin/hive-mcp-barter do?: io.github.srotzin/hive-mcp-barter provides 3 tools: barter_discover, barter_quote_curve, barter_arbitrage_book. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.srotzin/hive-mcp-barter?: io.github.srotzin/hive-mcp-barter is compatible with claude-desktop, cursor, claude-code. It uses stdio transport.
Is io.github.srotzin/hive-mcp-barter actively maintained?: io.github.srotzin/hive-mcp-barter is actively maintained — last commit was 26 days ago.