# Obol (npm · @superbigroach/obol-mcp)

Find, pay for & call APIs in USDC from AI agents - gasless, sub-cent, 0% commission.

- Trust score: 61/100 (medium)
- Change this week: +16
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@superbigroach/obol-mcp`: 61/100 (this document), [markdown](https://verifymcp.io/servers/superbigroach-obol/superbigroach-obol-mcp.md), [page](https://verifymcp.io/servers/superbigroach-obol/superbigroach-obol-mcp)

## Channel facts

- Registry: `npm`
- Package: `@superbigroach/obol-mcp`
- Version: `0.2.2`
- 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 (139 of 141), 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 (139 of 141), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 32/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 23 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 498 tokens (~99/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**: 93/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 75% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); 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

### Claude

```bash
claude mcp add superbigroach-obol -- npx -y @superbigroach/obol-mcp
```

### Codex

```bash
codex mcp add superbigroach-obol -- npx -y @superbigroach/obol-mcp
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add superbigroach-obol --command npx --arg -y --arg @superbigroach/obol-mcp
```

### Hermes

```yaml
mcp_servers:
  superbigroach-obol:
    command: "npx"
    args: ["-y", "@superbigroach/obol-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "superbigroach-obol": {
      "command": "npx",
      "args": [
        "-y",
        "@superbigroach/obol-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.

### 2026-08-02 (score 61, +41)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional regression] License: unverified → fail
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Schema quality: unverified → good

### 2026-07-31 (score 20, −25)

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

### 2026-07-30 (score 45, +21)

- [functional improvement] Tool coverage: unverified → 100

### 2026-07-28 (score 24, −21)

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

### 2026-07-27 (score 45)

First indexed and scored.

## MCP tools (5)

### `find_service` (~92 tokens)

Find a service

Search the Obol directory for metered APIs an agent can pay for per call. Results are relevance-ranked (name > category > description). Returns id, price (USDC), description, the callable URL, and a relevance score.

Input parameters:

- `limit` (number): max results to return (default 20)
- `query` (string): what you need, e.g. 'crypto prices' or 'web scraper'

Output parameters:

- `count` (number)
- `note` (string)
- `services` (array)

### `deposit` (~49 tokens)

Deposit to Gateway

Fund the agent's Gateway balance once (gas-free spending afterward). Amount in USDC, e.g. '5'.

Input parameters:

- `amount` (string, required): USDC amount to deposit, e.g. '5'

Output parameters:

- `deposited` (string)
- `error` (string)
- `ok` (boolean)
- `tx` (string)

### `pay_and_call` (~152 tokens)

Pay for and call a service

Pay for and call an Obol metered service via Circle Gateway. Enforces your per-call maxPrice and (with OBOL_API_KEY) your account's daily/weekly/monthly spending limits. Near-limit pays ask you to confirm. Idempotent on retry. Returns the result plus a signed, verifiable payment receipt.

Input parameters:

- `callUrl` (string, required): the service's callUrl from find_service
- `idempotencyKey` (string): reuse across retries; auto-generated if omitted
- `maxPrice` (number): max USDC to pay for this call (default 1.0)
- `method` (string)
- `params` (object): query params to pass to the API

Output parameters:

- `data`
- `declined` (boolean)
- `error` (string)
- `idempotencyKey` (string)
- `limitRemaining` (number)
- `ok` (boolean)
- `paid` (string)
- `receipt`
- `receiptSignature` (string)
- `responseSafety` (object)
- `tx` (string)
- `warning` (string)

### `list_service` (~183 tokens)

List a service for sale

List (publish) a new service on the Obol marketplace so other agents can discover and pay for it. Requires the seller's Obol API key (OBOL_API_KEY env). Obol auto-issues a real ACK-ID verifiable credential for the seller's wallet and returns the marketplace URL.

Input parameters:

- `category` (string): e.g. Data, AI, Scraper, Tools
- `description` (string)
- `docsUrl` (string)
- `hostedUrl` (string, required): the public https:// endpoint agents will call
- `inputSchema` (string): input params, e.g. 'coin: string'
- `name` (string, required): short service name, e.g. 'Crypto Price API'
- `priceUsdc` (string, required): USDC price per call, e.g. '0.001'
- `skillMarkdown` (string)

Output parameters:

- `ackDid` (string)
- `ackIssuer` (string)
- `error` (string)
- `marketplaceUrl` (string)
- `message` (string)
- `ok` (boolean)

### `get_balance` (~22 tokens)

Get balances

Get the agent wallet + Gateway USDC balances on Arc testnet.

Output parameters:

- `address` (string)
- `error` (string)
- `gatewayAvailableUsdc` (string)
- `ok` (boolean)
- `walletUsdc` (string)

## Diagnostics

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

## Score history

- 2026-08-03: 61
- 2026-08-02: 61
- 2026-08-01: 20
- 2026-07-31: 20
- 2026-07-30: 45
- 2026-07-28: 24
- 2026-07-27: 45

## Links

- npm package: https://www.npmjs.com/package/@superbigroach/obol-mcp
- Socket report: https://socket.dev/npm/package/@superbigroach/obol-mcp
- Repository: https://github.com/superbigroach/obol-mcp
- Website: https://obol-arc.web.app/
- Changelog RSS feed: https://verifymcp.io/servers/superbigroach-obol/superbigroach-obol-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/superbigroach-obol/superbigroach-obol-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/superbigroach-obol/superbigroach-obol-mcp