What is praxia-backend?

An agent for proposing and applying fixes to backend software after another agent has reviewed it. Backend software handles server-side logic, APIs, authentication, and databases.

It helps improve API endpoints, service code, input checks, authentication, database queries, error handling, API agreements, and configuration.

It turns reported backend problems into specific code and configuration changes, with a person approving the changes before they are applied.

How atmosware/praxia-agents configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to atmosware/praxia-agents. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/atmosware/praxia-agents/main/.claude/agents/praxia-backend.md

Clone the repo

git clone --depth 1 https://github.com/atmosware/praxia-agents

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/atmosware/praxia-agents/praxia-backend/github.svg)](https://agentmods.dev/agents/atmosware/praxia-agents/praxia-backend)

Your own site

<a href="https://agentmods.dev/agents/atmosware/praxia-agents/praxia-backend"><img src="https://agentmods.dev/badge/agents/atmosware/praxia-agents/praxia-backend/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/atmosware/praxia-agents/praxia-backend"><img src="https://agentmods.dev/badge/agents/atmosware/praxia-agents/praxia-backend.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 124 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.

Model	Per session	Once invoked
Fable 5.1	$0.00063	$0.00124
Opus 5.5	$0.00025	$0.00050
Sonnet 5.5	$0.00013	$0.00025
Haiku 4.5	$0.00006	$0.00012

Measured 2mo ago against content hash 91fa5fb7dd5a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

praxia-backend 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.

.claude/agents/praxia-backend.md · 7 lines

What it actually says

Canonical definition: Read .github/agents/praxia-backend.agent.md and follow every instruction defined there exactly. This file exists only to register the agent — all role, responsibilities, constraints, approach, and output format are in the canonical file.

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.

2mo ago First seen · 7 lines · 63 tokens per session scan A 91fa5fb7dd5a

Subscribe to this mod's changes

praxia-backend is an agent published in the GitHub repository atmosware/praxia-agents (3 stars, last pushed 4mo ago), licensed MIT. It adds 63 tokens to every session and 124 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 2026-08-31.

Backend and APIs

praxia-backend next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
praxia-backendatmosware/praxia-agents	Agent	3	4mo ago	MIT	A	63	Claude Code
php-developerdavepoon/buildwithclaude	Agent	3.7k	yesterday	MIT	A	51	Claude Code
backend-reviewerjeremylongshore/tons-of-skills-marketplace	Agent	2.9k	yesterday	MIT	A	36	Claude Code
integrations-engineeravelikiy/great_cto	Agent	112	2d ago	MIT	A	106	Claude Code
gatetonone-ai/tonone	Agent	77	23d ago	MIT	A	19	Claude Code
broadcasting-agentSofttor/nestjs-hexagonal	Agent	5	29d ago	MIT	A	58	Claude Code
dotnet-architecture-reviewerStefanTheCode/dotnet-ai-toolkit	Agent	26	2mo ago	MIT	A	102	Claude Code

praxia-agents: Agent for Claude Code