feat: add TAC mainnet

[suhailkakar]

Summary by CodeRabbit

• New Features
  • Added support for the TAC network.
  • Connect to TAC using a preconfigured RPC endpoint.
  • See the TAC network name, ticker, and icon across the app.
  • View activity and transactions with integrated explorer links.
  • Open transactions and addresses directly on the TAC block explorer.
  • Asset information and balances now available for TAC.

[coderabbitai]

Walkthrough

Adds TAC as a new EVM network: defines a TAC network configuration, registers it in the Ethereum networks index, and adds TAC to the NetworkNames enum.

Changes

Cohort / File(s)	Summary
Network registration packages/extension/src/providers/ethereum/networks/index.ts	Imports the new tac network module and exposes it on the networks default export object (adds tac property).
New TAC network config packages/extension/src/providers/ethereum/networks/tac.ts	Adds TAC EvmNetwork instance with options: name: NetworkNames.TAC, name_long: "TAC", homePage: "https://tac.build", explorer templates (https://explorer.tac.build/...), chainID: "0xef", isTestNetwork: false, currency TAC, RPC https://rpc.ankr.com/tac, icon tac.webp, assetsInfoHandler, and activityHandler via wrapActivityHandler(EtherscanActivity). Exports the instantiated network as default.
Types update packages/types/src/networks.ts	Adds TAC = "TAC" to the NetworkNames enum.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  actor User
  participant Wallet
  participant NetworksIndex as "Networks Index"
  participant TAC as "EvmNetwork: TAC"
  participant Assets as "assetsInfoHandler"
  participant Activity as "wrapActivityHandler(EtherscanActivity)"

  User->>Wallet: Choose TAC network / view account
  Wallet->>NetworksIndex: Resolve network by name (TAC)
  NetworksIndex->>TAC: Return TAC network config
  Wallet->>TAC: Request assets
  TAC->>Assets: Fetch assets metadata
  Assets-->>TAC: Return assets metadata
  TAC-->>Wallet: Provide assets

  User->>Wallet: Request activity
  Wallet->>TAC: Fetch activity
  TAC->>Activity: Query Etherscan-compatible API
  Activity-->>TAC: Return activity list
  TAC-->>Wallet: Provide activity

Loading

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• feat: add derive network #680 — Adds a new EVM network module and updates networks index and NetworkNames enum in the same pattern.
• feat: bitrock network + fraxtal network #566 — Similar addition of an EVM network file and enum registration.
• Add AppLayer Testnet Network #735 — Adds an Ethereum-compatible network and modifies the networks registry and types.

Suggested reviewers

• kvhnuke
• SemajaM8

---

📜 Recent review details

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

💡 Knowledge Base configuration:

• MCP integration is disabled by default for public repositories
• Jira integration is disabled by default for public repositories
• Linear integration is disabled by default for public repositories

You can enable these sources in your CodeRabbit configuration.

📥 Commits

Reviewing files that changed from the base of the PR and between 5a61a02 and 6fad677.

📒 Files selected for processing (1)

• packages/extension/src/providers/ethereum/networks/tac.ts (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• packages/extension/src/providers/ethereum/networks/tac.ts

✨ Finishing Touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>, please review it.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Support

Need help? Create a ticket on our support page for assistance with any issues or questions.

CodeRabbit Commands (Invoked using PR/Issue comments)

Type @coderabbitai help to get the list of available commands.

Other keywords and placeholders

• Add @coderabbitai ignore or @coderabbit ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbitai anywhere in the PR title to generate the title automatically.

Status, Documentation and Community

• Visit our Status Page to check the current availability of CodeRabbit.
• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.

[coderabbitai]

Actionable comments posted: 1

📜 Review details

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

💡 Knowledge Base configuration:

• MCP integration is disabled by default for public repositories
• Jira integration is disabled by default for public repositories
• Linear integration is disabled by default for public repositories

You can enable these sources in your CodeRabbit configuration.

📥 Commits

Reviewing files that changed from the base of the PR and between 1b2c545 and 5a61a02.

📒 Files selected for processing (3)

• packages/extension/src/providers/ethereum/networks/index.ts (2 hunks)
• packages/extension/src/providers/ethereum/networks/tac.ts (1 hunks)
• packages/types/src/networks.ts (1 hunks)

🧰 Additional context used

🧬 Code graph analysis (1)

packages/extension/src/providers/ethereum/networks/tac.ts (2)

packages/extension/src/providers/ethereum/types/evm-network.ts (2)

• EvmNetworkOptions (22-53)
• EvmNetwork (55-286)

packages/extension/src/providers/ethereum/libs/activity-handlers/index.ts (1)

• EtherscanActivity (10-10)

🔇 Additional comments (6)

packages/types/src/networks.ts (1)

115-116: Enum entry looks good

Adding TAC to NetworkNames is consistent with the new network integration.

packages/extension/src/providers/ethereum/networks/index.ts (1)

81-82: Registry wiring is correct

Import and export of tac follow existing patterns; no issues spotted.

Also applies to: 172-173

packages/extension/src/providers/ethereum/networks/tac.ts (4)

18-18: RPC endpoint is valid

https://rpc.ankr.com/tac is an official TAC RPC on Ankr. No change needed. (ankr.com)

---

1-1: Icon asset present. Verified packages/extension/src/providers/ethereum/networks/icons/tac.webp exists and matches the import path.

---

12-13: Explorer APIs confirmed
Both https://tac.blockscout.com/api and https://explorer.tac.build/api return HTTP 200 for the module=account&action=txlist Etherscan-style request, confirming API compatibility for the activity handler.

---

20-23: No changes needed for missing coingeckoPlatform
MarketData.getMarketInfoByContracts early-returns {} when platformId is undefined, and downstream callers (e.g. in transaction/decoder.ts with if (marketInfo[tx.to!])) guard against missing entries, so no errors occur and missing data is handled gracefully.