api-caller SKILL.md skillA
api-caller from nvidia/skillevaluator is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nvidia/skillevaluator/api-caller@git:20260801.fdf3ea4Pins git:20260801.fdf3ea4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nvidia/skillevaluator
- Path
src/skillevaluator/tier3/reference_skills/api-caller/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260801.fdf3ea4, committed Aug 1, 2026
- First version recorded
- Jul 26, 2026
- Size
- 4,374 bytes
- Repository stars
- 618
- License
- Apache-2.0
Call any REST API dynamically. Make GET, POST, PUT, DELETE requests to any endpoint with custom headers and JSON body.
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
# API Caller Skill Generic skill to call any REST API dynamically. Can work with OpenAPI specs or direct endpoint calls. ## Capabilities - Call any REST API endpoint (GET, POST, PUT, DELETE) - Parse OpenAPI/Swagger specs to discover endpoints - Handle common authentication (API keys, Bearer tokens) - JSON request/response handling ## Instructions 1. Read this SKILL.md to choose the direct-call or OpenAPI workflow. 2. Use `scripts/parse_openapi.py` first when the user gives an OpenAPI or Swagger spec. 3. Use `scripts/call_api.py` for the actual HTTP request. 4. Return the request result and any recoverable error details to the user. ## Scripts ### scripts/parse_openapi.py **Use this first** when given an API spec URL. Parses an OpenAPI/Swagger spec and returns available operations with parameters. Run commands from the skill base directory; script paths are relative to this SKILL.md file. **Usage:** ``` python scripts/parse_openapi.py <spec_url> [filter_path] ``` **Arguments:** - `<spec_url>` - URL to the OpenAPI spec (required) - `[filter_path]` - Optional: filter operations by path substring **Example:** ```bash …
Read the whole file at its exact version.
How to install
mdr add nvidia/skillevaluator/api-caller@sha256:d6d3cdb622147408The line at the top of this page pins the label git:20260801.fdf3ea4, 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_gx6a2nmykjnmhkmj)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 26, 2026 and Aug 1, 2026, about one every 6 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260801.fdf3ea4 latest | 2026-08-01 | fdf3ea4 | 4,374 B | A | view · diff |
| git:20260726.6a1bc57 | 2026-07-26 | 6a1bc57 | 4,375 B | A | view |
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 (4374 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
nvidia/skillevaluator · 618 stars · license Apache-2.0 · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gx6a2nmykjnmhkmj GET https://markdownregistry.com/api/v1/resolve?ref=nvidia/skillevaluator/api-caller GET https://markdownregistry.com/api/v1/blob/d6d3cdb622147408989494c60b846a09419b3c79b2466aee90e8f36a5fd68e9c
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.