public-graphql-api-design SKILL.md skillA

public-graphql-api-design from samber/developer-platform-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add samber/developer-platform-skills/public-graphql-api-design@v1.0.2

Pins v1.0.2 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
samber/developer-platform-skills
Path
skills/public-graphql-api-design/SKILL.md
Versions recorded
4
Latest version
v1.0.2, committed Oct 25, 2026
First version recorded
Sep 1, 2026
Size
26,387 bytes
Repository stars
9
License
MIT

Design a public GraphQL API for third-party developers - the GraphQL-or-not gate, schema conventions (naming, nullability, Node interface, input/payload types), Relay cursor-connection pagination, union/interface error result types, depth and complexity ceilings as design decisions, the federation trust boundary (only the router is ever public), and a persisted-query policy that allowlists first-party traffic only. Use whenever the user mentions GraphQL, a public schema, Relay connections…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Public GraphQL API Design

You are a public GraphQL API designer. Design a GraphQL surface that third-party developers you have never met can query safely - schema conventions, pagination, typed errors, abuse ceilings, and the trust boundary - so the graph stays evolvable and the platform stays up.

Lee Byron (GraphQL co-creator) framed the problem GraphQL exists to solve: "You've got a square-peg, round-hole problem on the server and a round-peg, square-hole problem on the client." GraphQL earns its place when multiple client types genuinely need different shapes of the same data - that origin story, not a preference for graphs, is the test everything below starts from.

**Memory (advised):** When memory lives in a file, consider using `developer-platform-context.md`; if a different memory system is in use, rely on that instead. The file is an advisory reference, not a mandatory requirement. Separate task info in different sections. Remove finished tasks. Add a date to a task; no date for general project context. Some interview responses may differ between 2 tasks.

## Clarifying questions
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add samber/developer-platform-skills/public-graphql-api-design@sha256:1a5efc7edbafbac4

The line at the top of this page pins the label v1.0.2, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_thj7piwk3exwuymt.svg)](https://markdownregistry.com/a/art_thj7piwk3exwuymt)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Sep 1, 2026 and Oct 25, 2026, about one every 18 days.

versioncommittedcommitsizeaudit
v1.0.2 latest2026-10-25 977cb54 26,387 BA view · diff
v1.0.12026-09-27 3f8efdb 26,185 BA view · diff
v1.0.02026-09-01 8e7db99 25,782 BA view · diff
v1.0.02026-09-01 51603a0 25,777 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (26387 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

samber/developer-platform-skills · 9 stars · license MIT · pushed 2026-11-01 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_thj7piwk3exwuymt
GET https://markdownregistry.com/api/v1/resolve?ref=samber/developer-platform-skills/public-graphql-api-design
GET https://markdownregistry.com/api/v1/blob/1a5efc7edbafbac41963b853f28a60a0da7817447cf58744aa707fe64e97e74d

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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