io.github.memosr/base-gas-mcp
NPM · BASE-GAS-MCP
Live Base gas, tx cost in USD, 4-chain comparison and gas history. Paid per call in USDC via x402.
Available components
Last scanned (9 hours ago)
Scores higher than 42% of npm servers
Category Crypto and Web3
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. How we score → Why this is hard to score →
Supply Chain Security99
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 32 of 118 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 4 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability80
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 570 tokens (~114/item across 5 items; 5 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management17
- Stability observed for 5 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 21 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Oct 26 +1
- Stability: 0.00 → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- Package version: 0.3.1 → 0.3.2 functional
- 18 Oct 26 71
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 23 Oct 2026 · Analysed npm/base-gas-mcp@0.3.2
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 118 packages
| Packages resolved | 118 |
|---|---|
| Stale | 32 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
compare_gas_costs Compare gas costs across Base, OP, Arbitrum and Ethereum ~134
Live cost of the same transaction on Base, OP Mainnet, Arbitrum One and Ethereum, in USD and ETH, ranked cheapest first. Costs about $0.01. Each call makes a real USDC micropayment on Base mainnet via x402 from BUYER_PRIVATE_KEY; payments above MAX_USD_PER_CALL are refused. Do not call it in loops.
| Name | Type | Req | Description |
|---|---|---|---|
| gasLimit | integer | – | Gas units to price. 21000 ETH transfer (default), ~65000 ERC-20 transfer, ~85000 NFT mint, ~180000 Uniswap swap, ~1500000 contract deploy. |
No output schema declared.
No examples provided.
get_base_gas Live Base gas and transaction cost ~156
Live Base mainnet gas: EIP-1559 base fee, low/medium/high priority fees in gwei, the cost of a transaction in USD, ETH and gwei, and ready-to-sign maxFeePerGas / maxPriorityFeePerGas. Costs about $0.002. Each call makes a real USDC micropayment on Base mainnet via x402 from BUYER_PRIVATE_KEY; payments above MAX_USD_PER_CALL are refused. Do not call it in loops.
| Name | Type | Req | Description |
|---|---|---|---|
| gasLimit | integer | – | Gas units to price. 21000 ETH transfer (default), ~65000 ERC-20 transfer, ~85000 NFT mint, ~180000 Uniswap swap, ~1500000 contract deploy. |
No output schema declared.
No examples provided.
get_cheapest_window When to transact on Base ~120
From 7 days of Base gas history: the hours of day to avoid, the cheapest hour (UTC), and the saving versus the average hour in percent and USD. Says so plainly when timing saves nothing. Costs about $0.02. Each call makes a real USDC micropayment on Base mainnet via x402 from BUYER_PRIVATE_KEY; payments above MAX_USD_PER_CALL are refused. Do not call it in loops.
| Name | Type | Req | Description |
|---|---|---|---|
| hours | integer | – | Lookback window in hours, 1 to 168. Default 168. |
No output schema declared.
No examples provided.
get_gas_history Base gas history and verdict ~116
Base gas sampled every 5 minutes over a lookback window (default 24h): min/max/average/median and whether gas is cheap, normal, expensive or flat right now. Costs about $0.01. Each call makes a real USDC micropayment on Base mainnet via x402 from BUYER_PRIVATE_KEY; payments above MAX_USD_PER_CALL are refused. Do not call it in loops.
| Name | Type | Req | Description |
|---|---|---|---|
| hours | integer | – | Lookback window in hours, 1 to 168. Default 24. |
No output schema declared.
No examples provided.
get_service_status Service status and history coverage (free) ~44
Free, no wallet needed. Reports whether the gas service is up and how much gas history it has collected, so you can decide whether the history tools are worth paying for.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the io.github.memosr/base-gas-mcp server?
io.github.memosr/base-gas-mcp runs locally as an npm package, launched with npx -y base-gas-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · base-gas-mcp
claude mcp add memosr-base-gas-mcp -- npx -y base-gas-mcp
What is the io.github.memosr/base-gas-mcp server?
io.github.memosr/base-gas-mcp is listed in the public MCP registry as io.github.memosr/base-gas-mcp. Live Base gas, tx cost in USD, 4-chain comparison and gas history. Paid per call in USDC via x402. This page covers its npm package (base-gas-mcp).
Is the io.github.memosr/base-gas-mcp server safe to use?
io.github.memosr/base-gas-mcp scores 73 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 23 October 2026. It declares no install or post-install scripts. 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.memosr/base-gas-mcp server expose?
io.github.memosr/base-gas-mcp exposes 5 tools: get_base_gas, compare_gas_costs, get_gas_history, get_cheapest_window, get_service_status. Their descriptions and schemas cost roughly 570 tokens of context every time the server is loaded.
Is the io.github.memosr/base-gas-mcp server still maintained?
io.github.memosr/base-gas-mcp is still listed as active in the MCP registry. We last reached this channel on 23 October 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.memosr/base-gas-mcp server under?
io.github.memosr/base-gas-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.