Borrowing it
Nothing to install: this file belongs to geleynse/gantry. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/geleynse/gantry/main/.claude/skills/add-api-route/SKILL.mdgit clone --depth 1 https://github.com/geleynse/gantryWrote 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/geleynse/gantry/add-api-route)<a href="https://agentmods.dev/skills/geleynse/gantry/add-api-route"><img src="https://agentmods.dev/badge/skills/geleynse/gantry/add-api-route.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00053 | $0.03085 |
| Opus 5 | $0.00026 | $0.01543 |
| Sonnet 5 | $0.00011 | $0.00617 |
| Haiku 4.5 | $0.00005 | $0.00309 |
Grade A, and why
add-api-route 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 8d 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 — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Adding an API Route — Gantry Server
1. Where the file goes
New route module: server/src/web/routes/<name>.ts. Test: server/src/web/routes/<name>.test.ts (co-located).
Canonical example to copy: server/src/web/routes/directives.ts + directives.test.ts — simple CRUD over one service module, clean auth story, in-memory DB test. For an SSE example, copy server/src/web/routes/status.ts (GET /stream) or read server/src/web/routes/sse.test.ts / agent-stream.test.ts.
Stale doc warning: AGENTS.md (both root and server/) says "register in ROUTE_REGISTRATIONS in route-config.ts". That file does not exist. The real registration point is server/src/web/routes/api-routes.ts, which manually mounts every sub-router with router.use(...) inside createApiRoutes(). Two source comments (map.ts, credentials.ts) still say "route-config" too — ignore them, they're leftover from a prior refactor.
2. Two router shapes
Pick based on whether the route needs shared state / DB deps at construction time:
A. Plain router, default export — no constructor args, imports its own service functions directly (notes.ts, directives.ts, comms.ts, tool-calls.ts):
import { Router } from 'express';
import { validateAgentName } from '../config.js';
import { getFoo, createFoo } from '../../services/foo-db.js';
const router: Router = Router();
router.get('/:name', (req, res) => {
const name = req.params.name;
if (!validateAgentName(name)) {
res.status(404).json({ error: 'Unknown agent' });
return;
}
res.json(getFoo(name));
});
export default router;
B. Factory function — needs sharedState slices, sessions, config, etc. injected (status.ts, market.ts, game-state.ts, accounts.ts):
export function createFooRouter(statusCache: Map<string, AgentStatus>, config: GantryConfig): Router {
const router: Router = Router();
router.get('/', (_req, res) => res.json([...statusCache.values()]));
return router;
}
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.
- 8d ago First seen · 196 lines · 53 tokens per session scan A dd781bf9a7f4
add-api-route is a skill published in the GitHub repository geleynse/gantry (3 stars, last pushed 2d ago), licensed MIT. It adds 53 tokens to every session and 3,085 once invoked, about $0.0003 per session on Opus 5. 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 2026-08-31.
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