◎ Discry Score
paddle.com
commerce · API
A
0 / 100
DISCOVERY0
COMPREHENSION0
Category leader: 95 (A)
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Paddle is Agent-Ready to agents.

Discry independently scored how well an AI agent can discover and understand the Paddle API from what’s public — not whether it’s usable. Below: every signal we checked, what’s costing the score, and what to change.

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SCORED UNDER RUBRIC 1.2 · A full re-launch under Discry Score 2.5 — a new behavioral instrument, not comparable to these scores — is in progress.

Discovery

45% of score · 88/100
OpenAPI specA machine-readable OpenAPI/Swagger spec agents can parse.Pass
llms.txtAn llms.txt index that points agents to the docs that matter.Pass
llms.txt qualityThe llms.txt is focused, current, and well under the size budget.Pass
llms-full.txtA full-text bundle agents can load in one request.Pass
AGENTS.mdAn AGENTS.md that tells coding agents how to build on the API.Partial
.well-known/mcp.jsonA discoverable MCP manifest at a well-known path.Fail
MCP registryThe API is listed in a public MCP registry.Pass
robots.txt AI directivesrobots.txt allows (or explicitly guides) AI crawlers.Pass
SitemapA sitemap so agents can enumerate the docs surface.Pass

Comprehension

55% of score · 100/100
Task-oriented descriptionsEndpoints described by what they accomplish, not just their shape.Pass
Realistic examplesRunnable, real-world request/response examples.Pass
Multi-step workflowsDocs that chain calls into complete jobs an agent can follow.Pass
Error-recovery guidanceDocumented failure modes and how to recover from them.Pass
Answer-first formatThe answer leads; preamble does not bury it.Pass
Capability boundariesClear limits — what the API can and cannot do.Pass
Naming consistencyConsistent, predictable naming across endpoints.Pass
Heading hierarchyClean heading structure agents can navigate.Pass
Markdown docsDocs available as clean markdown, not JS-rendered HTML only.Pass
Token efficiencyDocs are concise enough to fit an agent context window.Pass

What we found

  • An agent that crawls developer.paddle.com finds best-in-class discovery scaffolding: a structured, API-focused llms.txt that splits into per-section files to dodge truncation limits, a 1.1MB llms-full.txt, an LLM-specific sitemap (sitemap-llm.xml), and a .md sibling reachable by appending '.md' to any documentation URL — so the agent never has to parse JS-rendered HTML.
  • robots.txt uses the Content-Signal standard (search=yes, ai-input=yes) to explicitly invite AI agents to read and reason over the docs, while still opting out of training — a deliberate, agent-aware policy rather than a default allow.
  • Paddle ships agent execution surfaces well beyond documentation: two hosted MCP servers (one for account actions, one for up-to-date knowledge), a loadable paddle-agent-skills repo for Claude Code/Codex/Cursor/Gemini, and an official OpenAPI 3.1 spec — an agent can go from reading to acting with no glue code.
  • Endpoint pages are answer-first and task-oriented: 'POST /customers — Create a customer' leads with purpose and required permissions, then realistic copy-pasteable examples (jo@example.com, ctm_-prefixed IDs). Error pages add 'Common causes' and 'Common solutions' so an agent can self-correct after a failure.
  • The one gap is the legacy .well-known/mcp.json discovery file (404) — but Paddle's two MCP servers are surfaced through PulseMCP and its own /sdks/ai docs instead, so agents still discover them; the missing well-known file is a near-cosmetic miss.

What to change

Prioritized by impact on discoverability. You (or your docs platform) deploy these — Discry never touches your API.

  1. 01Add a /.well-known/mcp.json manifest declaring the two hosted MCP servers and their auth so MCP-aware agents can auto-discover Paddle's tools without a web search — the only failing discovery check.
  2. 02Publish a top-level AGENTS.md in the primary SDK and MCP repos (paddle-node-sdk, paddle-mcp-server). Paddle already teaches users to add one for Codex; mirroring it in its own repos would turn the current partial into a full pass and guide coding agents working against the SDKs.
  3. 03Keep the llms.txt split structure but consider a short 'capabilities at a glance' block at the very top so an agent can confirm scope (subscriptions, checkout, payments, webhooks, merchant-of-record tax) in under a few hundred tokens before fetching section files.
  4. 04Surface the MCP servers and OpenAPI spec inside llms.txt itself (not just the docs nav), so an agent reading the index immediately knows action surfaces exist alongside the reference.

Execution coverage · INFORMATIONAL, UNSCORED

Whether an agent can actually complete a call and recover from errors is the deeper Audit layer — documented here, but not part of the Discry Score.

API key (Bearer)Client-side token (Paddle.js) Error format documented Rate limits documented Pagination documented Idempotency documented

Execution documentation is exemplary. Errors return machine-parseable JSON (type, code, detail, documentation_url, and a field-level errors array with request_id); rate limits are stated explicitly (240 rpm platform, 1,000 rpm for preview endpoints, 429 with a Retry-After header); pagination, idempotency keys, and retry patterns are documented as shared SDK behaviors.

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