fastapi-response-contract-boundary SKILL.md skillA
fastapi-response-contract-boundary from jinning6/noosphere is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jinning6/noosphere/fastapi-response-contract-boundary@git:20260715.10fc9a0Pins git:20260715.10fc9a0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jinning6/noosphere
- Path
shared_skills/releases/1.0.0/fastapi-response-contract-boundary/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260715.10fc9a0, committed Jul 15, 2026
- Size
- 3,385 bytes
- Repository stars
- 18
- License
- Apache-2.0
Audit and fix FastAPI/Pydantic response contract failures and analytics metric drift. Use when endpoints return ResponseValidationError/500, legacy JSON rows miss required response fields, response_model schemas need compatibility normalizers, or dashboard/trend/report APIs disagree on a canonical metric.
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
# FastAPI Response Contract Boundary Use this skill to keep strict FastAPI response models without letting old or external data crash user-facing endpoints. ## Workflow 1. Reproduce with the real API first. - Create or identify a real row that triggers the endpoint. - Capture the HTTP status and backend traceback. - If test data is created, clean it through the public deletion path and verify database counts. 2. Check official docs before code edits. - FastAPI response model validation/filtering behavior. - Pydantic v2 model validation, field defaults, and validators. - SQLAlchemy/ORM serialization docs only when the fix touches ORM loading or mapped attributes. 3. Locate the contract boundary. - Input schema: rejects invalid new writes. - Stored data: may contain legacy or externally written JSON. - Service serializer: should normalize legacy stored data before FastAPI validates the response. - Response schema: should remain strict unless the product contract truly changed. 4. Do not "fix" by removing `response_model`. - A 500 from `ResponseValidationError` is a useful release gate. …
Read the whole file at its exact version.
How to install
mdr add jinning6/noosphere/fastapi-response-contract-boundary@sha256:97170e446bdc1c3aThe line at the top of this page pins the label git:20260715.10fc9a0, 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.
[](https://markdownregistry.com/a/art_qpjzkkaqjqbsd6wz)
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Versions
The registry has recorded 1 version of this file, committed on Jul 15, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3385 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
jinning6/noosphere · 18 stars · license Apache-2.0 · pushed 2026-11-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qpjzkkaqjqbsd6wz GET https://markdownregistry.com/api/v1/resolve?ref=jinning6/noosphere/fastapi-response-contract-boundary GET https://markdownregistry.com/api/v1/blob/97170e446bdc1c3a648467bd83efd623a3dbd55b9906bb6c254cecd088315503
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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