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 instructions/jhlee0409/openapi-sync-mcp/claude-mdgit clone --depth 1 https://github.com/jhlee0409/openapi-sync-mcpWrote 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/instructions/jhlee0409/openapi-sync-mcp/claude-md)<a href="https://agentmods.dev/instructions/jhlee0409/openapi-sync-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/jhlee0409/openapi-sync-mcp/claude-md.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 | $0.00379 | $0.00379 |
| Opus 5 | $0.00189 | $0.00189 |
| Sonnet 5 | $0.00076 | $0.00076 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
openapi-sync-mcp CLAUDE.md 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 4d 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.
What it actually says
Claude Instructions for OpenAPI Sync MCP
This MCP server provides tools for working with OpenAPI specifications.
Available Tools
| Tool | Description |
|---|---|
oas_parse |
Parse and validate OpenAPI spec with pagination |
oas_deps |
Find schema dependencies and impact |
oas_diff |
Compare two spec versions |
oas_status |
Check cached spec status |
oas_generate |
Generate code from spec |
Common Workflows
1. Parse a spec
{
"name": "oas_parse",
"arguments": {
"source": "https://api.example.com/openapi.json",
"format": "summary"
}
}
2. Find what uses a schema
{
"name": "oas_deps",
"arguments": {
"source": "./openapi.json",
"schema": "User",
"direction": "downstream"
}
}
3. Check for breaking changes
{
"name": "oas_diff",
"arguments": {
"old_source": "./openapi-v1.json",
"new_source": "./openapi-v2.json",
"breaking_only": true
}
}
Plugin Commands
This MCP is used with the OAS plugin which provides /oas:* commands:
/oas:init- Initialize project/oas:sync- Sync code with spec/oas:status- Check status/oas:diff- Compare specs/oas:check- Validate code
Development
# Build
cargo build --release
# Test
cargo test
# Run locally
./target/release/openapi-sync-mcp
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.
- 4d ago First seen · 77 lines · 379 tokens per session scan A fd89f8656512
openapi-sync-mcp CLAUDE.md is an instructions file published in the GitHub repository jhlee0409/openapi-sync-mcp (2 stars, last pushed 7mo ago), licensed MIT. It adds 379 tokens to every session, about $0.0019 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.
Other instructions, from other repositories
Agent-Span AGENTS.md
AGENTS.md instructions for oxbshw/Agent-Span, covering agents.md, build & test, crate layout, adding a channel and adding an mcp tool.
fieldflow AGENTS.md
Instructions for guillaumegay13/fieldflow, covering repository guidelines, project structure & module organization, current product scope, build, test, and development commands and coding style & naming conventions.
relay-radar CLAUDE.md
Claude Code instructions for AetherCore-Dev/relay-radar, covering claude.md, build & development commands, install dependencies (yarn workspaces + turbo monorepo), build all packages and run all tests (107 tests across 6 suites).
claude-tap AGENTS.md
Instructions for liaohch3/claude-tap, covering maintainer automation notes, agents 索引, documentation boundary, review guidelines and pre-commit hook.
skyvern CLAUDE.md
Claude Code instructions for Skyvern-AI/skyvern, covering claude.md, development commands, python backend commands, code quality & testing and frontend commands (in skyvern-frontend/).
opencodex AGENTS.md
AGENTS.md instructions for lidge-jun/opencodex, covering agents.md, what this project is, repository layout, optional subsystems stay off the core path and the devlog directory.