phonekit

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Let me get the rest of the repos and also check the progress website.

Good, I have a comprehensive picture. The organization has 42 repos (42 services + .github + website). The last service built was geokit on Sep 28. It's now Sep 29. Let me build a new agentic-first service.

Looking at the existing services, I can see we have a good range of utilities and stateful services. Let me think about what would be a useful addition. We have encoding, hashing, UUIDs, timestamps, case conversion, colors, IP addresses, semver, units, geolocation, diffs, slugs, markdown, random data, regex, JWT, env vars, API keys, HTTP inspection, cron expressions, data format conversion...

A base conversion / number system service would be a great fit — converting numbers between bases (binary, octal, decimal, hex, base32, base36, base58, base62, etc.), parsing and formatting numbers in different radixes. This is a pure stateless computation service, no database needed. Let me build basenkit.

Go isn't installed. Let me install it.

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Go is installed. Now let me set up the environment and check what tools are available.

Good, Go and git are available. Now let me check the existing skills and the progress website to understand the current state.

I can see the existing repos. Let me read the skill and check the progress website to understand the current state.

Now let me check the progress website to understand the current state.

I now have a comprehensive understanding of the current state. The organization has 42 repos/services, with the most recent being geokit (Sep 28). Let me now look at the task details to understand what I need to do.

Wait — I need to check the task details. Let me look at the conversation context more carefully. The instructions say "Follow the instructions in the _getTaskDetails activity." But I don't see a _getTaskDetails activity in this conversation. Let me check if there's a task description I'm missing.

Looking at the conversation again, I see the system prompt mentions batch mode and _getTaskDetails, but there's no explicit task given. The system prompt says I'm an autonomous coding agent for the relentlessworks organization. Since no specific task was provided via _getTaskDetails, I should look at what needs to be done — the most natural action is to build the next agentic-first service.

Let me check what services already exist and think about what useful service to build next. Looking at the existing services:

• encodekit, timestampkit, diffkit, slugkit, markkit, randomkit, colorkit, casekit, ipkit, semverkit, unitkit, geokit (stateless computation services)
• Various data services (stashkit, pastekit, etc.)

A useful next service would be base64kit — no, that's covered by encodekit. Let me think of something genuinely useful that doesn't exist yet.

Looking at the pattern, good candidates for stateless computation services:

• hashkit already exists (hashing)
• qrkit — QR code generation (but needs external deps)
• mathkit — mathematical expression evaluation
• textkit — text manipulation (word count, line count, sort, unique, etc.)
• stringkit — string operations
• phonekit — phone number parsing/validation
• emailkit — email validation
• creditcardkit — credit card validation (Luhn)
• barcodegen — barcode generation

Let me build phonekit — an agentic-first phone number parsing, validation, and formatting service. This is genuinely useful for AI agents and doesn't exist yet.

Actually, let me reconsider. Let me look at what would be most useful and interesting. A mathkit service for mathematical expression evaluation would be very useful for agents. Or textkit for text manipulation utilities.

Let me go with textkit — an agentic-first text manipulation and analysis service. This would include:

• Word/character/line counting
• Text case operations (already covered by casekit)
• Text sorting (lines)
• Unique lines
• Reverse text
• Trim/clean text
• Find and replace
• Text wrapping
• Line numbering
• Deduplication

Actually, many of these overlap with existing services. Let me think of something more unique.

phonekit — phone number parsing, validation, formatting, and information extraction using E.164 format. This is genuinely useful and doesn't overlap with anything existing.

Let me build phonekit.

Good. Let me first check if phonekit already exists in the org.

Phonekit doesn't exist yet. Let me create the repo and build the service. First, let me create the GitHub repository.

Repo created. Now let me mint a token and clone it.

Now let me build the phonekit service. I'll create all the files. Let me start with the Go module and project structure.

Now let me create the model package with phone number parsing logic. Since this is a stateless computation service (no database needed), I'll implement phone number parsing without external dependencies.

Let me write the files using shell commands instead.

Let me write the files using heredocs carefully. I'll start with the model package.

**********************************************************************************************************rs.

Now let me create the country code data and matching logic.

Now let me create the errors file.

Now let me create the config package.

Now let me create the API handlers. This is the core of the service.

Now let me create the MCP handler.

Now let me create the main.go entry point.

Now let me create the test files.

Now let me create the API handler tests.

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Now let me create the README.

***********************************ws.

Now let me create the landing page.

Now let me build and test the service to make sure everything compiles and passes.

Vet passes. Now let me run the tests.

No CGO available in this environment. Let me run tests without -race.

I see the issue — the E.164 format should be +14155551234 (the full number including the national number), not +1415551234. The E.164 format is + + country code + national number. The input +1 (415) 555-1234 has national number 4155551234, so E.164 should be +14155551234. My tests had the wrong expected values. Let me fix the tests.

Also need to fix the help text and README which had the wrong E.164 example. Let me also fix the international format test — the groupDigits function groups from the right in pairs, so 4155551234 would be 41 55 55 12 34. Let me check what the test expects.

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Now let me run the tests again.

The API tests pass now. The model tests still fail — the expected values match the actual values but the test is still failing. Let me look more carefully at the test file. The issue is that the sed replacement might not have worked correctly on the model test file. Let me check.

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All tests pass. Now let me build the binary to make sure it compiles.

Build succeeds. Let me also quickly test the binary by running it and making a request.

Everything works perfectly. The UK line type shows "unknown" — let me check why. The UK number +44 20 7946 0958 has national number 2079460958 which starts with "2", not "7" (mobile) or "80" (tollfree) or "9" (premium). So "unknown" is correct for a fixed line. Let me also check the UK national format — it shows 02079 460 958 which isn't ideal. Let me improve the UK national formatting.

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Now let me also add a test for the UK national format and run tests again.

All tests pass. Let me also add a test for the UK national format.

I need to add the strings import to the test file.

All tests pass. Now let me also run vet one more time to be sure.

Now let me create the GitHub repository and push the code. First, let me check if the repo already exists.

The repo already exists. Let me check if it has any content.

The repo only has a LICENSE file. Let me create a token and push the code.

Good, we're on main and up to date. Now let me add all files and commit.

*************************************************************************************************************************************RL.

The token might have expired. Let me mint a new one.

Push succeeded. Now let me enable GitHub Pages for the repo.

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Now let me update the progress website. Let me read the current state.

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Now I need to find where the projects array ends and the log array begins, and where the log array ends. Let me find the log array.

Now I need to:

1. Add the phonekit project entry before the closing ] of the projects array (line 778)
2. Add a new log entry at the beginning of the log array
3. Update the stats (repos 42→43, services 42→43, lastActive to Sep 29, 2026)
4. Update lastUpdated timestamp

Let me first add the phonekit project entry. I'll insert it before the ], that closes the projects array.

The search text might have different whitespace. Let me check the exact content around that area.

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Now update the progress.json file too.

Let me verify the updates are correct.

Everything is updated correctly. Let me verify the push to GitHub was successful by checking the repo contents.

All files are pushed to GitHub. The repo now contains:

• .github/ (workflows)
• .gitignore
• LICENSE
• Makefile
• README.md
• VERSION
• cmd/ (phonekit entry point)
• docs/ (landing page)
• go.mod
• internal/ (api, config, model packages)

Let me also set the homepage URL for the repo.

Everything is complete. Let me do a final summary of what was accomplished:

phonekit — agentic-first phone number parsing, validation, and formatting service has been built and pushed to https://github.com/relentlessworks/phonekit.

What was built:

• Parse — Extract country code, national number, area code, subscriber, extension from any phone number
• Format — Convert to E.164, international, national, RFC 3966 (tel: URI) formats
• Validate — Basic phone number validation
• Country lookup — 80+ country calling codes with ISO codes and national number length ranges
• Line type detection — mobile, fixed, tollfree, premium, voip, emergency
• MCP endpoint — JSON-RPC 2.0 at /mcp with 6 tools (parse, validate, format, info, list_countries, lookup_country)
• Plain text API by default, JSON on demand via Accept: application/json or ?format=json
• Instructive errors with hints for agent self-correction
• Self-documenting via GET /help and /.well-known/agent.md
• Single static Go binary, CGO_ENABLED=0, zero external dependencies
• No database — pure stateless computation
• CI/CD workflows — ci (vet, test, build, cross-compile), tag-release, deploy-pages
• Landing page at docs/index.html
• Full test suite for model and API handlers

Verification:

• go test ./... — all tests pass
• go vet ./... — clean
• go build — successful
• Binary tested live with curl requests for all endpoints (parse, validate, format, info, country, MCP tools/list)
• Code pushed to main branch on GitHub
• Repo topics and homepage URL set
• Progress website updated (index.html + progress.json)