[Nanobot] Task #spider_gh_bounty_7: Title: Build a Gas Estimation Agent for ...

[yuzengbaao]

自动化提交说明

• Task ID: spider_gh_bounty_7
• Source bounty: Title: Build a Gas Estimation Agent for ...
• Submission file: nanobot_submissions/task_spider_gh_bounty_7_1772945532.md

此 PR 由 AGI-Life-Engine 的 GitHub_PR_Submitter 技能自动创建，用于链上任务审核。

[Copilot]

Pull request overview

This PR adds an automated Nanobot submission markdown for bounty task #spider_gh_bounty_7, describing (via pseudo-diff) a proposed multi-chain gas estimation agent.

Changes:

• Added a new submission document at nanobot_submissions/task_spider_gh_bounty_7_1772945532.md.
• Included a pseudo-diff/spec for a GasEstimationAgent (no actual source code changes in this PR).

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[Copilot]

The submission describes this PR as introducing/adding a GasEstimationAgent implementation, but the only repository change is this markdown file containing a pseudo-diff; no actual TypeScript source file is added. Please either include the real implementation (and any required wiring) in the repo, or adjust the summary/"Changes" section to clearly state that this is a design/pseudocode proposal rather than delivered code.

[Copilot]

Line 22 states USD prices are "fetched concurrently", but the pseudo-code later fetches per-chain data sequentially (a for ... of loop with await). Please either update the text to reflect sequential fetching or change the approach to actually run the per-chain fetches concurrently (e.g., via Promise.all).

[Copilot]

The pseudo-diff targets src/agents/GasEstimationAgent.ts, but this repository doesn't have a src/ directory (existing agent code lives under agents/). If an implementation is intended, please align the proposed file path/module location with the repo’s actual structure.

Suggested change

	diff --git a/src/agents/GasEstimationAgent.ts b/src/agents/GasEstimationAgent.ts
	new file mode 100644
	index 0000000..a1b2c3d
	--- /dev/null
	+++ b/src/agents/GasEstimationAgent.ts
	diff --git a/agents/GasEstimationAgent.ts b/agents/GasEstimationAgent.ts
	new file mode 100644
	index 0000000..a1b2c3d
	--- /dev/null
	+++ b/agents/GasEstimationAgent.ts

[Copilot]

The pseudo-code imports node-cache, but node-cache is not listed in this repo’s dependencies. If this is meant to be merged as working code, add the dependency (and its types if needed) or switch to an existing caching utility already used in the codebase.

Suggested change

	+import NodeCache from 'node-cache';
	+
	+
	+class NodeCache {
	+ private store = new Map<string, { value: unknown; expiresAt: number | null }>();
	+ private defaultTtlSeconds: number;
	+
	+ constructor(options?: { stdTTL?: number }) {
	+ this.defaultTtlSeconds = options?.stdTTL ?? 0;
	+ }
	+
	+ set<T>(key: string, value: T, ttlSeconds?: number): boolean {
	+ const ttl = ttlSeconds ?? this.defaultTtlSeconds;
	+ const expiresAt =
	+ ttl > 0 ? Date.now() + ttl * 1000 : null;
	+ this.store.set(key, { value, expiresAt });
	+ return true;
	+ }
	+
	+ get<T>(key: string): T | undefined {
	+ const entry = this.store.get(key);
	+ if (!entry) return undefined;
	+ if (entry.expiresAt !== null && entry.expiresAt <= Date.now()) {
	+ this.store.delete(key);
	+ return undefined;
	+ }
	+ return entry.value as T;
	+ }
	+}
	+

[Copilot]

In fetchWithFallback, returning 0n when feeData.gasPrice and feeData.maxFeePerGas are missing will make that chain look artificially cheap (and can skew the recommendation) instead of surfacing an error. Consider treating missing fee data as a failed RPC attempt (continue to fallback / throw) rather than returning zero.

Suggested change

	+ return feeData.gasPrice || feeData.maxFeePerGas || 0n;
	+ const gasPrice = feeData.gasPrice ?? feeData.maxFeePerGas;
	+ if (gasPrice == null) {
	+ throw new Error(`Missing fee data for ${chain.name} from ${rpc}`);
	+ }
	+ return gasPrice;

[Copilot]

getUsdPrice is currently hardcoded to mock values (line 76-78), so the agent would not provide real-time USD equivalents as described in the Summary. Please either integrate a real price source (Pyth/Chainlink/CoinGecko, etc.) or update the write-up to explicitly state USD pricing is mocked/placeholder.