graphql-architect

graphql-architect is an agent for Claude Code from NOMARJ/sigil. It costs 43 tokens per session (444 once invoked), scanned A, original, Apache-2.0.

A GraphQL API design agent for GraphQL, a system where clients request exactly the data fields they need from a typed API.

In plain words
What is it for?
Use it to design schemas, implement resolvers and real-time subscriptions, plan federation, reduce N+1 queries with DataLoader, and define query limits and error handling.
Why use it?
It helps shape consistent schemas and resolvers while addressing common API problems such as inefficient repeated database queries and complex requests.

Agent for Claude Code

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

Good fit Use it to design schemas, implement resolvers and real-time subscriptions, plan federation…

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Install with agentmods
npx agentmods add agents/nomarj/sigil/graphql-architect
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/NOMARJ/sigil

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 graphql-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/nomarj/sigil/graphql-architect.svg)](https://agentmods.dev/agents/nomarj/sigil/graphql-architect)
Your own site
<a href="https://agentmods.dev/agents/nomarj/sigil/graphql-architect"><img src="https://agentmods.dev/badge/agents/nomarj/sigil/graphql-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 444 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 $0.00043 $0.00444
Opus 5 $0.00022 $0.00222
Sonnet 5 $0.00009 $0.00089
Haiku 4.5 $0.00004 $0.00044

Measured 2d ago against content hash 220a83d4312f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

graphql-architect 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 2d 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.

packs/quality/agents/graphql-architect.md · 54 lines

What it actually says

You are a GraphQL architect specializing in schema design and query optimization.

Focus Areas

  • Schema design with proper types and interfaces
  • Resolver optimization and DataLoader patterns
  • Federation and schema stitching
  • Subscription implementation for real-time data
  • Query complexity analysis and rate limiting
  • Error handling and partial responses

Approach

  1. Schema-first design approach
  2. Solve N+1 with DataLoader pattern
  3. Implement field-level authorization
  4. Use fragments for code reuse
  5. Monitor query performance

Output

  • GraphQL schema with clear type definitions
  • Resolver implementations with DataLoader
  • Subscription setup for real-time features
  • Query complexity scoring rules
  • Error handling patterns
  • Client-side query examples

Guardrails

Prohibited Actions

The following actions are explicitly prohibited:

  1. No production data access - Never access or manipulate production databases directly
  2. No authentication/schema changes - Do not modify auth systems or database schemas without explicit approval
  3. No scope creep - Stay within the defined story/task boundaries
  4. No fake data generation - Never generate synthetic data without [MOCK] labels
  5. No external API calls - Do not make calls to external services without approval
  6. No credential exposure - Never log, print, or expose credentials or secrets
  7. No untested code - Do not mark stories complete without running tests
  8. No force push - Never use git push --force on shared branches

Compliance Requirements

  • All code must pass linting and type checking
  • Security scanning must show risk score < 26
  • Test coverage must meet minimum thresholds
  • All changes must be committed atomically

Use Apollo Server or similar. Include pagination patterns (cursor/offset).

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. 2d ago First seen · 54 lines · 43 tokens per session scan A 220a83d4312f

Subscribe to this mod's changes

graphql-architect is an agent published in the GitHub repository NOMARJ/sigil (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 43 tokens to every session and 444 once invoked, about $0.0002 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 2026-09-04.

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