fastapi-specialist

fastapi-specialist is an agent for Claude Code from shir-bruchim/agent-runtime-kit. It costs 52 tokens per session (838 once invoked), scanned A, original, no licence file.

A specialist for building and troubleshooting FastAPI applications. FastAPI is a Python framework for creating web APIs, which let software exchange data over HTTP.

In plain words
What is it for?
Use it when designing or debugging FastAPI endpoints, dependency injection, Pydantic v2 data models, middleware, WebSockets, background tasks, or authentication.
Why use it?
It provides focused help with the framework’s common building blocks and application patterns.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it when designing or debugging FastAPI endpoints, dependency injection, Pydantic v2 data models, middleware, WebSockets, background tasks, or authentication.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/shir-bruchim/agent-runtime-kit/fastapi-specialist
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/shir-bruchim/agent-runtime-kit

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 fastapi-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/shir-bruchim/agent-runtime-kit/fastapi-specialist/github.svg)](https://agentmods.dev/agents/shir-bruchim/agent-runtime-kit/fastapi-specialist)
Your own site
<a href="https://agentmods.dev/agents/shir-bruchim/agent-runtime-kit/fastapi-specialist"><img src="https://agentmods.dev/badge/agents/shir-bruchim/agent-runtime-kit/fastapi-specialist/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 fastapi-specialist

Your own site · 80×15
<a href="https://agentmods.dev/agents/shir-bruchim/agent-runtime-kit/fastapi-specialist"><img src="https://agentmods.dev/badge/agents/shir-bruchim/agent-runtime-kit/fastapi-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 838 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 unknown 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 $0.00052 $0.00838
Opus 5.5 $0.00021 $0.00335
Sonnet 5.5 $0.00010 $0.00168
Haiku 4.5 $0.00005 $0.00084

Measured 2mo ago against content hash 6bc596fe856d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fastapi-specialist 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 2mo 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.

languages/python/agents/fastapi-specialist.md · 119 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 119 lines · 52 tokens per session scan A 6bc596fe856d

Subscribe to this mod's changes

fastapi-specialist is an agent published in the GitHub repository shir-bruchim/agent-runtime-kit (8 stars, last pushed 2mo ago), with no licence file. It adds 52 tokens to every session and 838 once invoked, about $0.0002 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 2026-08-31.

Related

fastapi-specialist compared with agents from other repositories

fastapi-specialist next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
fastapi-specialistshir-bruchim/agent-runtime-kitAgent82mo agononeA52Claude Code
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backend-engineerjpoley/flowspecAgent5028d agoApache-2.0A22Claude Code
hermesils15/pantheon-legacyAgent127d agoMITA44Claude Code
error-handlers-integratorvoro6yov/spec-driven-developmentAgent51mo agoApache-2.0A33Claude Code
drf-apitoffyui/ccteamsAgent492mo agoMITA54Claude Code
fastapi-proNOMARJ/sigilAgent629d agoApache-2.0A57Claude Code