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 agentmods add skills/asfbay-bit/opchain-skills/oc-api-devnpx skills add asfbay-bit/opchain-skills --skill oc-api-devgit clone --depth 1 https://github.com/asfbay-bit/opchain-skillsWrote 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/asfbay-bit/opchain-skills/oc-api-dev)<a href="https://agentmods.dev/skills/asfbay-bit/opchain-skills/oc-api-dev"><img src="https://agentmods.dev/badge/skills/asfbay-bit/opchain-skills/oc-api-dev.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 | $0.00171 | $0.06432 |
| Opus 5 | $0.00086 | $0.03216 |
| Sonnet 5 | $0.00034 | $0.01286 |
| Haiku 4.5 | $0.00017 | $0.00643 |
Grade A, and why
oc-api-dev 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 yesterday.
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 — 640 lines — stays where its author put it; the contents beside it link to each section on GitHub.
API Developer
On first invocation, read references/orchestrator.md and follow its welcome protocol.
Tri-agent first-party API harness: Designer authors the contract (OpenAPI / GraphQL schema) → Builder scaffolds typed handlers, validation, and an SDK against it → Conformance hits the running server, validates responses against the spec, and diffs the new spec against the previously-shipped one to flag undeclared breaking changes.
This is the producer-side counterpart to oc-integrations-engineer. If you're
consuming someone else's API (Stripe, Slack, Salesforce, OAuth providers), use
oc-integrations-engineer. If you're designing/building the API your own clients,
customers, or partners consume, use this skill.
/oc-api — Command Reference
API DEVELOPER COMMANDS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TRI-AGENT HARNESS
/oc-api design Author the API contract (Designer agent)
/oc-api build Scaffold + conformance loop (Builder → Conformance)
/oc-api test Run Conformance against an existing server
AUTHOR
/oc-api spec Generate / update OpenAPI or GraphQL schema from data model
/oc-api scaffold Generate typed handlers + validation middleware from spec
/oc-api lint Run spectral / redocly lint on the spec
LIFECYCLE
/oc-api version Plan a new version (URL or header strategy)
/oc-api deprecate Mark endpoints deprecated; emit Sunset/Deprecation headers
/oc-api docs Render human-readable docs from the spec
/oc-api sdk Generate TypeScript / Python / Go SDK from the spec
UTILITIES
/oc-api list Show all endpoints with version + deprecation status
/oc-api drift Compare spec to running code; report mismatches
/checkpoint Show checkpoint status
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Type any command to begin. /oc-api to see this again.
Tri-Agent Architecture
API DESIGN INTENT
(from oc-app-architect 02-architecture.md API Design section)
│
▼
┌──────────────────┐
│ API │ Authors contract: OpenAPI / GraphQL schema.
│ DESIGNER │ Decides versioning, pagination, error envelope,
│ │ idempotency, rate-limit policy declarations.
└────────┬─────────┘
│
▼
┌──────────────────────────────────────────────┐
│ BUILD LOOP (per API surface) │
│ │
│ ┌────────────┐ contract ┌─────────────┐ │
│ │ API │◄─negotiate──►│ API │ │
│ │ BUILDER │ │ CONFORMANCE │ │
│ │ │──code──────►│ │ │
│ │ Scaffolds │ │ Hits live │ │
│ │ handlers │◄──failures──│ server + │ │
│ │ + SDK │ │ diffs spec │ │
│ └────────────┘ └─────────────┘ │
│ │ │ │
│ │ All checks pass? │ │
│ └───────────────────────────┘ │
└──────────────────────────────────────────────┘
│
└──► Drift monitoring (ongoing)
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- yesterday Changed · +2 lines · +17 tokens per session c03ebd64c061
- 4d ago First seen · 638 lines · 154 tokens per session scan A b69c584ab9c9
oc-api-dev is a skill published in the GitHub repository asfbay-bit/opchain-skills (0 stars, last pushed 2d ago), licensed Apache-2.0. It adds 171 tokens to every session and 6,432 once invoked, about $0.0009 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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