HTTP Client CLI

Make HTTP requests from the terminal and read the answer without effort.

17 capabilities 1 sections reference specification

Build against it

# give your agent the catalog — no account, no install
claude mcp add provespec -- npx -y provespec-mcp

# then, from any agent session
spec_get(slug: "http-client")                → the capability tree
spec_checklist(slug: "http-client")          → the questions to answer
spec_grade(slug: "http-client", grades: [...])  → parity % + the gap list

# or just fetch it
curl https://provespec.com/catalog/http-client/spec.json

Grade every capability below as yes · partial · no · na, with a file reference as evidence. Whatever you leave ungraded counts as missing — the gap list is the work queue.

Or just paste this to your agent

Use the ProveSpec MCP server. Fetch the "http-client" spec with
spec_get, then walk spec_checklist and grade this repository against it —
one verdict per capability, each with a file reference as the note.
Call spec_grade with the results and give me the gap list as the plan.

If the server is not registered, add it first:
  claude mcp add provespec -- npx -y provespec-mcp

The specification

AI 17

Request

✓ All standard methods GET/POST/PUT/PATCH/DELETE/HEAD
✓ Custom headers -H "Key: value" repeatable
✓ Query parameters as arguments key==value
✓ JSON body from arguments or a file key=value / @file.json sets content-type
✓ Form and multipart bodies with file upload
✓ Read the body from stdin

Connection

✓ Follow redirects on request bounded, shows the chain
✓ Timeouts and retries
✓ Proxy support and TLS verification toggle insecure mode is explicit

Auth

✓ Basic, bearer and header-based auth
✓ Credentials never appear in verbose output by default redacted

Response

✓ Pretty-print and colourise JSON plain when piped
✓ Show status, headers and timing body-only by default
✓ Download to a file with progress
✓ Exit code reflects the HTTP status class opt-in --fail

Sessions

✓ Persist cookies and defaults per host
✓ Export the request as curl for sharing

Download spec.json All 53 specs