ruflo: Skill for Claude Code

.agents/skills/agent-dev-backend-api/SKILL.md

agent-dev-backend-api is a skill for Claude Code, Codex from ruvnet/ruflo. It costs 22 tokens per session (2,677 once invoked), scanned A, original, MIT.

A coding-agent skill for building and changing backend APIs—the server-side interfaces that let software exchange data. It covers common API styles such as REST and GraphQL.

In plain words
What is it for?
Creating API endpoints and routes, implementing controllers or resolvers, and working on backend server code and its tests.
Why use it?
It focuses the agent on backend API work and limits its file access to typical source, route, model, middleware, and test folders. This helps keep unrelated project files out of scope.

Skill for Claude CodeCodex

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code; installed under .agents/ (shared by several agents); $skill-name invocation.

This is ruvnet/ruflo's own configuration. It tells Claude Code and Codex how to work on ruflo itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ruflo configures →

Part of the claude-flow plugin — 135 skills, 52 commands, 11 agents, 4 hooks shipped together

not rated 77krepo +2.1k today A scan Socket: warnSnyk: warnSkillSpector: warn 22 tokens original MIT
About the project

Ruflo is an execution and coordination layer for Claude Code and Codex that equips AI coding agents with tools, memory, control loops, sandboxes, and collaboration mechanisms. Developers use it to organize specialized agents into swarms, coordinate workflows, retain knowledge across sessions, and communicate across machines. The catalogue entries are Ruflo’s skills, commands, agents, hooks, and plugin components.

ruvnet/ruflo · 77,172 stars · on GitHub · cognitum.one

Reuse

Borrowing it

Nothing to install: this file belongs to ruvnet/ruflo. 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/ruvnet/ruflo/main/.agents/skills/agent-dev-backend-api/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/ruvnet/ruflo

Made for: Claude Code, Codex.

Or install claude-flow, the plugin that ships this one along with the rest of its 135 skills, 52 commands, 11 agents, 4 hooks.

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 agent-dev-backend-api

README.md
[![agentmods](https://agentmods.dev/badge/skills/ruvnet/ruflo/agent-dev-backend-api/github.svg)](https://agentmods.dev/skills/ruvnet/ruflo/agent-dev-backend-api)
Your own site
<a href="https://agentmods.dev/skills/ruvnet/ruflo/agent-dev-backend-api"><img src="https://agentmods.dev/badge/skills/ruvnet/ruflo/agent-dev-backend-api/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 agent-dev-backend-api

Your own site · 80×15
<a href="https://agentmods.dev/skills/ruvnet/ruflo/agent-dev-backend-api"><img src="https://agentmods.dev/badge/skills/ruvnet/ruflo/agent-dev-backend-api.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,677 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. Third-party audits
  • Socket warn 15 Sept 2026
  • Snyk warn 15 Sept 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 7 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Tool Misuse · line 291
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • medium MCP Rug Pull · line 119
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 122
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 126
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 142
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 153
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 164
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
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 $0.00022 $0.02677
Opus 5.5 $0.00009 $0.01071
Sonnet 5.5 $0.00004 $0.00535
Haiku 4.5 $0.00002 $0.00268

Measured 1mo ago against content hash 13fbac965e68, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-dev-backend-api 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 1mo 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.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

.agents/skills/agent-dev-backend-api/SKILL.md · 350 lines

How it starts

The opening of the file, as written. The whole thing — 350 lines — stays where its author put it; the contents beside it link to each section on GitHub.


name: "backend-dev" description: "Specialized agent for backend API development with self-learning and pattern recognition" color: "blue" type: "development" version: "2.0.0-alpha" created: "2025-07-25" updated: "2025-12-03" author: "Claude Code" metadata: specialization: "API design, implementation, optimization, and continuous improvement" complexity: "moderate" autonomous: true v2_capabilities: - "self_learning" - "context_enhancement" - "fast_processing" - "smart_coordination" triggers: keywords: - "api" - "endpoint" - "rest" - "graphql" - "backend" - "server" file_patterns: - "$api//.js" - "$routes//.js" - "$controllers//.js" - ".resolver.js" task_patterns: - "create * endpoint" - "implement * api" - "add * route" domains: - "backend" - "api" capabilities: allowed_tools: - Read - Write - Edit - MultiEdit - Bash - Grep - Glob - Task restricted_tools: - WebSearch # Focus on code, not web searches max_file_operations: 100 max_execution_time: 600 memory_access: "both" constraints: allowed_paths: - "src/" - "api/" - "routes/" - "controllers/" - "models/" - "middleware/" - "tests/" forbidden_paths: - "node_modules/" - ".git/" - "dist/" - "build/**" max_file_size: 2097152 # 2MB allowed_file_types: - ".js" - ".ts" - ".json" - ".yaml" - ".yml" behavior: error_handling: "strict" confirmation_required: - "database migrations" - "breaking API changes" - "authentication changes" auto_rollback: true logging_level: "debug" communication: style: "technical" update_frequency: "batch" include_code_snippets: true emoji_usage: "none" integration: can_spawn: - "test-unit" - "test-integration" - "docs-api" can_delegate_to: - "arch-database" - "analyze-security" requires_approval_from: - "architecture" shares_context_with: - "dev-backend-db" - "test-integration" optimization: parallel_operations: true batch_size: 20 cache_results: true memory_limit: "512MB" hooks: pre_execution: | echo "🔧 Backend API Developer agent starting..." echo "📋 Analyzing existing API structure..." find . -name ".route.js" -o -name ".controller.js" | head -20

# 🧠 v2.0.0-alpha: Learn from past API implementations
echo "🧠 Learning from past API patterns..."
SIMILAR_PATTERNS=$(npx claude-flow@alpha memory search-patterns "API implementation: $TASK" --k=5 --min-reward=0.85 2>$dev$null || echo "")
if [ -n "$SIMILAR_PATTERNS" ]; then
  echo "📚 Found similar successful API patterns"
  npx claude-flow@alpha memory get-pattern-stats "API implementation" --k=5 2>$dev$null || true
fi

# Store task start for learning
npx claude-flow@alpha memory store-pattern \
  --session-id "backend-dev-$(date +%s)" \
  --task "API: $TASK" \
  --input "$TASK_CONTEXT" \
  --status "started" 2>$dev$null || true

post_execution: | echo "✅ API development completed" echo "📊 Running API tests..." npm run test:api 2>$dev$null || echo "No API tests configured"

# 🧠 v2.0.0-alpha: Store learning patterns
echo "🧠 Storing API pattern for future learning..."
REWARD=$(if npm run test:api 2>$dev$null; then echo "0.95"; else echo "0.7"; fi)
SUCCESS=$(if npm run test:api 2>$dev$null; then echo "true"; else echo "false"; fi)

npx claude-flow@alpha memory store-pattern \
  --session-id "backend-dev-$(date +%s)" \
  --task "API: $TASK" \
  --output "$TASK_OUTPUT" \
  --reward "$REWARD" \
  --success "$SUCCESS" \
  --critique "API implementation with $(find . -name '*.route.js' -o -name '*.controller.js' | wc -l) endpoints" 2>$dev$null || true

# Train neural patterns on successful implementations
if [ "$SUCCESS" = "true" ]; then
  echo "🧠 Training neural pattern from successful API implementation"
  npx claude-flow@alpha neural train \
    --pattern-type "coordination" \
    --training-data "$TASK_OUTPUT" \
    --epochs 50 2>$dev$null || true
fi

Read the full file on GitHub · 350 lines

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. 1mo ago First seen · 350 lines · 22 tokens per session scan A 13fbac965e68

Subscribe to this mod's changes

agent-dev-backend-api is a skill published in the GitHub repository ruvnet/ruflo (77,172 stars, last pushed today), licensed MIT. It adds 22 tokens to every session and 2,677 once invoked, about $0.0001 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.

Related

Other skills, from other repositories

api-testing

Comprehensive API testing, validation, and test suite generation.

laragentic/agents · 14 tokens

neuron-laravel-integration

Integrate Neuron AI agents into a Laravel 13 app the framework-native way — setup checklist (App\Neuron layout, config/services.php keys, one migration, NeuronServiceProvider, bootstrap/app.php exception mapping, neuron:evaluate), container-built agents bound per thread with for(), thread authorization, JSON and…

neuron-core/neuron-ai · 236 tokens

neuron-agent

Create, configure, and extend Neuron AI agents in PHP using providers, tools, chat history, memory, and custom workflow nodes. Use for Neuron Agent implementation, configuration, conversation lifecycle, and input/output extensions.

neuron-core/neuron-ai · 48 tokens

diag-harness

Kernel-version skew check (ADR-027). Reports manifest surface + manifest kernel + installed kernel + verdict (match/patch-diff/minor-diff/major-diff). Exits 1 on minor/major skew with a copy-pasteable npm install @metaharness/[email protected] next step. Exits 2 if no .harness/manifest.json at path.

ruvnet/metaharness · 85 tokens

score-harness

5-dimension scorecard (0-100, grade A/B/C/F) for a scaffolded harness. Dimensions: Repo understanding (25%), Agent usefulness (25%), MCP safety (20%), Test coverage (15%), Publish readiness (15%). Emits a 6-field badges block (score + mcpRisk + 4 booleans) ready for the harness README. Exit 0 A/B, 1 C, 2 F.

ruvnet/metaharness · 0 tokens

upgrade-harness

Drift detection + apply for a scaffolded harness. Re-renders the template with the same vars, computes added/removed/changed file plan, and applies with Git-style conflict markers or .rej files. Default is dry-run.

ruvnet/metaharness · 51 tokens