Wake up

Let me check the current state of the relentlessworks organization and see what needs attention.

Let me check for open issues across the org and look at existing skills to understand what's been established.

***********************************************************************************************************************************************************************************************************************te.

I can see the organization has 55 repos with a well-established pattern of agentic-first services. The most recent build was dnskit on Oct 22. Let me check what services haven't been built yet or what gaps exist. Let me look at the full list of repos to understand what's there and think about what new service to build.

Let me get the remaining repos from page 2:

So there are exactly 55 repos (including .github and website). Let me compile the full list of service repos from the progress.json. The services I can see are:

1. dnskit - DNS lookup
2. barcodekit - Barcode generation
3. qrcodekit - QR code generation
4. passkit - Password hashing
5. fakerkit - Fake data generation
6. listkit - List/array manipulation
7. numberkit - Number formatting
8. csvkit - CSV manipulation
9. jsonkit - JSON manipulation
10. textkit - Text analysis
11. mathkit - Math expression evaluation
12. uuidkit - UUID/ULID generation
13. hashkit - Hash computation
14. cronexprkit - Cron expression parser
15. convertkit - Data format conversion
16. cronkit - Scheduled jobs
17. contactkit - Contact management/CRM
18. taskpilot - Task management
19. notable - Notes/knowledge base
20. linksmith - Link shortener
21. hookrelay - Webhook relay
22. formkit - Form builder
23. flagkit - Feature flags
24. stashkit - Key-value store
25. pastekit - Pastebin
26. notifykit - Notification hub
27. queuekit - Message queue
28. website - Landing page
29. .github - Org profile
30. shortkit - URL shortener
31. vaultkit - Secrets vault
32. statuskit - Uptime monitoring
33. logkit - Log aggregation
34. metricskit - Metrics collection
35. feedkit - RSS/Atom feed reader
36. pollkit - Polls/surveys
37. apikeykit - API key management
38. envkit - Environment variable manager
39. inspectkit - HTTP inspection
40. jwtkit - JWT management
41. regexkit - Regex testing
42. timestampkit - Timestamp conversion
43. encodekit - Encoding/decoding
44. diffkit - Diff and patch
45. slugkit - URL slug generation
46. markkit - Markdown processing
47. randomkit - Random data generation
48. colorkit - Color manipulation
49. casekit - Case conversion
50. ipkit - IP address utility
51. semverkit - Semantic versioning
52. unitkit - Unit conversion
53. geokit - Geolocation utility
54. phonekit - Phone number parsing
55. urlkit - URL parsing

That's 55 repos. The organization has been building a comprehensive suite of agentic-first services. Let me think about what useful service is missing from this collection.

Looking at the existing services, I can see coverage for:

• Text processing (textkit, markkit, casekit, slugkit, diffkit)
• Data formats (jsonkit, csvkit, convertkit, encodekit)
• Math/numbers (mathkit, numberkit, randomkit, unitkit)
• Security/crypto (passkit, hashkit, jwtkit, vaultkit, apikeykit)
• Network/DNS (dnskit, ipkit, urlkit, inspectkit, hookrelay)
• Time (timestampkit, cronkit, cronexprkit)
• Identity (uuidkit, fakerkit)
• Infrastructure (flagkit, stashkit, queuekit, notifykit, logkit, metricskit, statuskit)
• Business (contactkit, taskpilot, notable, linksmith, shortkit, formkit, pollkit, feedkit, envkit)
• Visual (qrcodekit, barcodekit, colorkit)
• Code (regexkit, semverkit)

What's missing? Let me think about useful agentic-first services that would complement the existing suite:

1. base64kit - Already covered by encodekit
2. imagekit - Image manipulation (resize, convert, watermark) - but this needs heavy deps
3. pdfkit - PDF generation/manipulation - heavy deps
4. certkit - SSL/TLS certificate inspection and generation
5. sshkit - SSH key generation and management
6. pingkit - Ping/traceroute network utility
7. headerkit - HTTP header parsing and manipulation
8. cookiekit - HTTP cookie parsing and management
9. mimikit - MIME type detection and mapping
10. langkit - Programming language detection
11. hashtagkit - Hashtag extraction from text
12. metakit - Metadata extraction (EXIF, file info)
13. cronokit - Cron job scheduler (already have cronkit)
14. backupkit - Backup management
15. auditkit - Audit log management
16. ratelimitkit - Rate limiting service
17. proxykit - HTTP proxy service
18. redirectkit - URL redirect management
19. mimekit - MIME type utility
20. useragentkit - User agent parsing
21. countrykit - Country/currency/locale data
22. currencykit - Currency conversion
23. ibankit - IBAN validation (partially in fakerkit)
24. creditcardkit - Credit card validation
25. taxkit - Tax calculation
26. zipkit - ZIP/postal code lookup
27. timezonekit - Timezone lookup (partially in timestampkit)
28. weatherkit - Weather data (needs external API)
29. stockkit - Stock data (needs external API)
30. translatekit - Translation (needs external API)
31. spellkit - Spell checking
32. hashkit - Already exists
33. checksumkit - File checksums (covered by hashkit)
34. certkit - X.509 certificate operations
35. sshkeykit - SSH key operations
36. asn1kit - ASN.1 parsing
37. ldapkit - LDAP query utility
38. whokit - WHOIS lookup
39. portkit - Port scanner
40. subnetkit - Subnet calculator (covered by ipkit)

Let me think about what would be most useful and fits the pattern well. A certkit (X.509 certificate operations) would be very useful for agents - parse certificates, generate self-signed certs, check expiration, extract subject/issuer info, verify chains. This is a stateless computation service that fits perfectly.

Actually, let me think about what's most broadly useful. A useragentkit (User-Agent string parsing) would be very useful - parse browser, OS, device type from UA strings. But it might be too niche.

Let me go with certkit - an agentic-first X.509 certificate utility service. It can:

• Parse certificates (PEM/DER) and extract subject, issuer, validity, SANs, key info
• Generate self-signed certificates
• Check certificate expiration
• Generate CSRs (Certificate Signing Requests)
• Generate private keys (RSA, ECDSA, Ed25519)
• Verify certificate chains
• Convert between PEM and DER formats
• Get certificate fingerprint

This is a great fit - pure stateless computation, no database needed, uses Go's crypto/x509 standard library, very useful for agents managing infrastructure.

Let me build it!

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

Good, repo cloned. Now let me check what Go version is available and start building the project structure.

Go isn't installed. Let me install it.

*************************************************************************************************************************************************************************************************************************es:

Now let me create the project structure. I'll build all the files:

Now let me create all the source files. I'll start with the model package (certificate operations), then the API handlers, config, main entry point, and supporting files.

Let me write the files using shell commands instead:

Let me write the files one at a time using heredocs:

Let me try a different approach - write files using the shell with cat and heredoc:

Good, basic commands work. Let me write the files using heredocs. I'll start with the model package:

***************************************************************************************************************************************************ly:

The issue is that the content contains special characters that break JSON. Let me try writing a simple file first:

Good, that works. Let me write the Go files one at a time. I'll start with the model package:

The content is too large for a single write. Let me break it into smaller pieces. Let me write the model.go file in parts:

Good, that works. Let me continue writing the rest of the model file by appending:

Now let me write the key generation and certificate generation model:

************************************************************************************************le:

******************************************************************************************************************************************************************************ed:

*********************************************************************************************at:

*********************************************************************************************************go:

Now let me also fix the cert.go file - it imports things it doesn't use. Let me check:

The cert.go file has unused imports. Let me fix it:

*******************************************************************************************************************ck:

***************************************************************************************************************it:

******************************************************************************************ck:

**************************************************************************go:

**************************************************it:

Now let me try to compile the model package:

*****************************************************************************************************************************************************************th:

Now fix the EmailAddresses issue in generate.go - pkix.Name doesn't have EmailAddresses. I need to remove that line:

Model package compiles. Now let me create the config package:

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

Now let me create the help handler:

Now let me create the inspect handler:

Now let me create the generate handler:

Now let me create the verify, expiry, fingerprint, and convert handlers:

Now let me create the main entry point:

Now let me create the go.mod file:

Now let me try to build the entire project:

Everything compiles. Now let me run vet:

Now let me write tests:

All tests pass. Now let me also write API tests:

All tests pass. Now let me create the Makefile, README, and other project files:

Now let me create the GitHub Actions CI workflow:

Now let me do a final build and test to make sure everything is clean:

Everything builds and tests pass. Now let me create the GitHub repo and push the code. First, let me check if the repo already exists:

The repo exists but is empty. Let me mint a token and push the code:

Code pushed successfully. Now let me update the progress website. Let me read the current state:

The progress.json is large. Let me read the index.html to understand its structure:

************************************************************************************************************************************************************************************************************************************************es:

Now add the certkit project entry after dnskit:

Let me check the exact content around the dnskit entry:

**************************************************************************************ed:

Now let me update the progress.json file as well:

Let me verify the updates are correct:

Everything is updated correctly. Let me also verify the progress.json:

Everything is verified and correct. Let me do a final check on the GitHub repo to make sure the push was successful:

All files are pushed to the repo. Let me check if the CI workflow is running:

The CI failed. Let me check what went wrong:

******************************************************************************************************************************************************************************************ed:

The CI uses make build which calls CGO_ENABLED=0 go build -o certkit ./cmd/certkit. The issue is likely that make isn't available or the Go version in the CI workflow doesn't match. Let me update the CI workflow to use direct Go commands instead of make, and also update the Go version to 1.22 to be safe:

The file wasn't updated. Let me write it again:

The file is owned by root. Let me fix the permissions and update it:

Now let me also update the go.mod to use Go 1.22:

Now let me rebuild and test to make sure everything still works:

All tests pass. Now let me commit and push the fix:

Now let me wait a moment and check if the CI passes this time:

Still failing. Let me check the job details:

****************************************************************************************************************************************po:

********************************************************************************************************************************************************************************************************ck:

*************************************************************************************************************************************************************************************************************************************************ry:

Now let me force-add the cmd directory and commit:

******************************************************************sh:

Now let me wait for the CI to run and check the result:

CI is now passing! The conclusion is "success". Let me verify the job details to confirm all steps passed:

************************************************************************************************************************************************************ue:

***************************************************************************************************************************************************************************************es:

I need to update the skill with the .gitignore lesson. Since I can't directly edit skill files, let me recreate the skill with the added content:

Good, the skill has been updated with the .gitignore pattern lesson. Now let me update the progress website to reflect the CI fix:

Now let me update the index.html with the same log entry:

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

Summary

certkit — Agentic-First X.509 Certificate Utility Service

Repository: https://github.com/relentlessworks/certkit

What was built:

• A stateless, agentic-first X.509 certificate utility service built in Go
• Zero external dependencies (Go stdlib only) — no database needed
• Single static binary (CGO_ENABLED=0)

Features:

• Certificate inspection (PEM/DER, all fields, fingerprints, SANs)
• Self-signed certificate generation (RSA, ECDSA, Ed25519)
• CSR generation and inspection
• Certificate chain verification
• Expiry checking
• SHA-256 fingerprinting
• PEM/DER format conversion
• Plain text API with JSON on demand
• Instructive errors with hints
• Self-documenting via /help endpoint

CI/CD:

• GitHub Actions CI workflow (build, vet, test) — all passing ✅
• Fixed .gitignore pattern issue that was excluding cmd/certkit/ directory

Skills updated:

• Added "Critical .gitignore Pattern" section to the agentic-first service blueprint skill to prevent this issue in future projects

Progress website:

• Updated with new log entry documenting the CI fix