Gajae Code is an external coding-agent harness that works inside repositories or worktrees and guides an agent through planning, review, approval, and code changes. It is for developers who want to use an existing coding-plan subscription while controlling agent work from a terminal, phone, or bot. The catalogue entries provide extensions such as skills, agents, commands, plugins, and MCP integrations for the harness.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Yeachan-Heo/gajae-code --skill gjc-sdk-sessiongit clone --depth 1 https://github.com/Yeachan-Heo/gajae-codeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/yeachan-heo/gajae-code/gjc-sdk-session)<a href="https://agentmods.dev/skills/yeachan-heo/gajae-code/gjc-sdk-session"><img src="https://agentmods.dev/badge/skills/yeachan-heo/gajae-code/gjc-sdk-session/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/yeachan-heo/gajae-code/gjc-sdk-session"><img src="https://agentmods.dev/badge/skills/yeachan-heo/gajae-code/gjc-sdk-session.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.01029 |
| Opus 5 | $0.00000 | $0.00515 |
| Sonnet 5 | $0.00000 | $0.00206 |
| Haiku 4.5 | $0.00000 | $0.00103 |
Grade A, and why
gjc-sdk-session scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GJC SDK session CLI (advisory)
Advisory reference for interacting with live GJC SDK sessions through the
broker-bound gjc sdk session command family. This skill is informational:
it never prints endpoint credentials or changes configuration, and it never
references removed command routes. Mutating commands are only documented and
run when the operator explicitly invokes them.
Broker authority
list, inspect, send, status, and tail resolve sessions through the
SDK broker. The broker validates the indexed session against its durable
endpoint record and hands the CLI a connection credential the CLI uses and
never prints. --agent-dir selects the broker state directory.
Semantic verbs
-
gjc sdk session list— brokersession.listprojected to the versioned, credential-free row DTO (session id, locator, pid, liveness, tombstone, activity, heartbeat, identity provenance, ambiguity). -
gjc sdk session inspect <sessionId>— one indexed row from the broker. It never reads endpoint discovery records directly: a missing or unavailable broker fails closed rather than exposing endpoint authority outside SDK core. -
gjc sdk session send <sessionId> --text <prompt>— orderedturn.promptcarrying a caller-chosen operation reference (ULID).--waitpollsturn.resultwithkind: "prompt"until terminal or the wait window elapses; it never cancels a running turn. -
gjc sdk session status <sessionId> <opRef>— losslessturn.resultwithkind: "prompt"for a previously submitted operation reference. -
gjc sdk session tail <sessionId>— retained transcript replay from the durable checkpoint followed by live event-ring frames.--strictfails closed on retention gaps,--until-idleexits at a terminal turn state,--all-eventswidens the emitted event kinds, and--cursorresumes from a saved checkpoint token that is re-minted per connection.
Raw hatch
gjc sdk session raw control|query|global dispatches one SDK operation with --op
(control/global) or --query (query) plus a JSON input source. Lifecycle
globals require --idempotency-key; destructive control operations accept
--confirm. Endpoint-disclosure operations are refused by default and stay
refused by this skill.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago Changed · +24 lines 16ca49a4aba7
- 9d ago First seen · 63 lines · 0 tokens per session scan A 25a5443770a1
gjc-sdk-session is a skill published in the GitHub repository Yeachan-Heo/gajae-code (2,744 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,029 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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