api-layer

An optional HTTP gateway that exposes the program through web requests and publishes an OpenAPI description of those requests. OpenAPI is a standard document describing an HTTP API's paths, inputs, and outputs.

In plain words
What is it for?
Use it to add or update HTTP routes, define their OpenAPI specification, and test externally visible request and response changes.
Why use it?
It keeps the published API description, live request handlers, tests, and user documentation aligned when the API changes.

Cursor rule for Cursor

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.

agentmods
npx agentmods add rules/coddy-project/coddy-agent/api-layer
Clone the repo
git clone --depth 1 https://github.com/coddy-project/coddy-agent

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 294 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00294
Opus 5 $0.00000 $0.00147
Sonnet 5 $0.00000 $0.00059
Haiku 4.5 $0.00000 $0.00029

Measured 2d ago against content hash c58064876cba, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

api-layer 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.

.cursor/rules/api-layer.mdc · 20 lines

What it actually says

HTTP API layer (external/httpserver)

  • Built with -tags http. SPA root / (go:embed from external/ui) links only when you add tags=ui with go build -tags=http,ui (see mountEmbeddedSPARoot splits in spa_embed_ui.go / spa_no_ui.go). Handlers are registered in Server.New in server.go.
  • openapi.go builds the served OpenAPI 3 document (openAPISpec). It is the programmatic spec; it must describe the same paths, methods, parameters, schemas, and response shapes as the live handlers.
  • After any change to routes or externally visible request or response behavior, update openAPISpec and extend server_test.go (or add tests) under the **http build tag.
  • User-facing narrative lives in docs/http-api.md; keep it aligned when endpoints or semantics change.

References

@workflow.mdc @docs/http-api.md @external/httpserver/server.go @external/httpserver/openapi.go

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 · 20 lines · 0 tokens per session scan A c58064876cba

Subscribe to this mod's changes

api-layer is a cursor rule published in the GitHub repository coddy-project/coddy-agent (127 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 294 tokens. 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.