# Free Base Blockchain Tools

> 13 free Base tools: address labels, tx explain, balances, receipts, gas, logs, bytecode.

- name: top.agentsapi/free-blockchain
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/top.agentsapi%2Ffree-blockchain
- tools: https://api.protogrid.dev/v1/servers/top.agentsapi%2Ffree-blockchain/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "free-blockchain": {
      "type": "http",
      "url": "https://agentsapi.top/free-blockchain/"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-9d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2024-11-05; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_block_number (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_transaction_receipt (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_contract_logs (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 907 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 1 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 14, about 907 tokens to load them all
- tool set hash: 90f48baa0f6408e7cd4692cc0b6dad26
- tools last changed: 2026-10-13T17:07:49.931Z
- badge: [![protogrid quality](https://protogrid.dev/badge/top.agentsapi/free-blockchain.svg)](https://protogrid.dev/servers/top.agentsapi/free-blockchain)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-13 `get_address_risk_score` added
  - Get a risk score (0-100) for an address based on our 100K+ labeled address database. Scam addresses score 90-100; known exchanges/bridges score 0-20; unknown addresses score 50. Use this BEFORE sending funds to verify the destination.

Full history: https://api.protogrid.dev/v1/servers/top.agentsapi%2Ffree-blockchain/changes

## Remotes

- https://agentsapi.top/free-blockchain/ (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (14)

- `estimate_gas`: Estimate gas needed for a transaction. Useful for dapps and wallets to show users how much gas they'll pay.
- `explain_transaction_simple`: Explain a transaction in plain English: who sent what to whom, with address labels. FREE simplified version of our premium explain tool.
- `get_address_label`: Get a human-readable label for an EVM address (100K+ entity labels: exchanges, bridges, protocols, scams). FREE, no payment required.
- `get_address_risk_score`: Get a risk score (0-100) for an address based on our 100K+ labeled address database. Scam addresses score 90-100; known exchanges/bridges score 0-20; unknown addresses score 50. Use this BEFORE sending funds to verify the destination.
- `get_balance`: Get ETH balance of an address on Base
- `get_block_by_number`: Get block details by block number: timestamp, miner, transaction count, gas used.
- `get_block_number`: Get the current latest block number on Base
- `get_contract_code`: Get contract bytecode at an address. Useful for checking if an address is a contract or a wallet.
- `get_contract_logs`: Get event logs from a contract in a block range. Useful for tracking transfers, approvals, etc.
- `get_gas_price`: Get current gas price on Base
- `get_transaction`: Get transaction details by hash on Base
- `get_transaction_receipt`: Get transaction receipt by hash: success/failure status, gas used, logs. Useful for checking if a tx succeeded.
- `get_usdc_balance`: Get USDC balance of an address on Base (stablecoin balance, more useful than ETH for most agents)
- `search_labels_by_category`: Search all labeled addresses by category (e.g. exchange, bridge, protocol, scam). Returns up to 50 matches.