Base Intel MCP

Gas Now

gas_now

Read-onlyIdempotent

Current gas price on the Base network (Coinbase's Ethereum L2), in gwei and wei, read live from a Base RPC node. Use before sending a Base transaction or estimating its cost. Takes no input.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Output Schema

TableJSON Schema

Name	Required	Description
`network`	No
`provenance`	No	Where this answer came from. served_at is when Datakoot answered (UTC); upstream lists the official sources consulted. Datakoot may serve a briefly cached copy, so the source's own observation can be older than served_at.
`gas_price_wei`	No
`gas_price_gwei`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 8, 2026

addedOutput schema / properties / provenance

Added value: +{
+  "description": "Where this answer came from. served_at is when Datakoot answered (UTC); upstream lists the official sources consulted. Datakoot may serve a briefly cached copy, so the source's own observation can be older than served_at.",
+  "properties": {
+    "may_be_cached": {
+      "type": "boolean"
+    },
+    "publisher": {
+      "type": "string"
+    },
+    "served_at": {
+      "format": "date-time",
+      "type": "string"
+    },
+    "upstream": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedOct 3, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "gas_price_gwei": {},
+    "gas_price_wei": {},
+    "network": {}
+  },
+  "type": "object"
+}

First observedSep 6, 2026

TDQS

A4.5/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnly, idempotent, non-destructive and open-world, so the safety profile is covered. The description adds genuinely new behavioral context: the value is read live from a Base RPC node and returned in two denominations, which tells the agent about freshness and output shape beyond the annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three short sentences, front-loaded with the resource and network, then use case, then arity. Every sentence earns its place with no filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, the description need not explain return values, and with zero parameters and rich annotations there is little else to cover. Purpose, timing, source, and arity are all stated, so nothing an agent needs to invoke it correctly is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Zero parameters, so the baseline is 4. The description confirms this explicitly ('Takes no input'), matching the empty input schema, and adds no misleading parameter hints.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific resource (current gas price), the exact network (Base, with a clarifying gloss), and the units returned (gwei and wei). This is unmistakably distinct from the sibling tools (address_report, token_info, token_balance, tx_status), none of which report gas.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives a clear triggering context: 'Use before sending a Base transaction or estimating its cost.' No exclusions or alternatives are named, but no sibling overlaps this capability, so the guidance is effectively complete.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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