api_designer

api_designer is an agent for Claude Code from josstei/maestro-orchestrate. It costs 63 tokens per session (156 once invoked), scanned A, original, Apache-2.0.

An API design specialist for planning how software services expose operations and exchange data through REST or GraphQL endpoints.

In plain words
What is it for?
It helps design endpoint paths, data schemas, pagination, error formats, OpenAPI specifications, resource models, and API version strategies.
Why use it?
It helps turn vague service requirements into consistent requests, responses, errors, and versioning rules.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit It helps design endpoint paths, data schemas, pagination, error formats, OpenAPI specifications, resource models, and API version strategies.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/josstei/maestro-orchestrate/api_designer
Install

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.

Clone the repo
git clone --depth 1 https://github.com/josstei/maestro-orchestrate

Made for: Claude Code.

Wrote 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.

agentmods badge for api_designer

README.md
[![agentmods](https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/api_designer/github.svg)](https://agentmods.dev/agents/josstei/maestro-orchestrate/api_designer)
Your own site
<a href="https://agentmods.dev/agents/josstei/maestro-orchestrate/api_designer"><img src="https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/api_designer/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.

agentmods 80×15 button for api_designer

Your own site · 80×15
<a href="https://agentmods.dev/agents/josstei/maestro-orchestrate/api_designer"><img src="https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/api_designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 156 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00063 $0.00156
Opus 5.5 $0.00025 $0.00062
Sonnet 5.5 $0.00013 $0.00031
Haiku 4.5 $0.00006 $0.00016

Measured yesterday against content hash a172feea8ed9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

api_designer 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.

agents/api_designer.md · 18 lines

What it actually says

Agent methodology loaded via MCP tool get_agent. Call get_agent(agents: ["api-designer"]) to read the full methodology at delegation time.

Changes

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.

  1. yesterday Changed · -2 lines a172feea8ed9
  2. 1mo ago First seen · 20 lines · 63 tokens per session scan A 8a85c62a85fd

Subscribe to this mod's changes

api_designer is an agent published in the GitHub repository josstei/maestro-orchestrate (486 stars, last pushed today), licensed Apache-2.0. It adds 63 tokens to every session and 156 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-30.

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