etrade-oauth1-signature-flow SKILL.md skillA
etrade-oauth1-signature-flow from himanshuj16/algo-trading-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add himanshuj16/algo-trading-skills/etrade-oauth1-signature-flow@v2.0.0Pins v2.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- himanshuj16/algo-trading-skills
- Path
skills/etrade-oauth1-signature-flow/SKILL.md- Versions recorded
- 5
- Latest version
- v2.0.0, committed Sep 3, 2026
- First version recorded
- Jul 30, 2026
- Size
- 10,179 bytes
- Repository stars
- 50
- License
- Apache-2.0
Use when integrating E*TRADE, which signs every request with OAuth 1.0a HMAC-SHA1 rather than OAuth 2.0 bearer tokens. Covers the three-legged flow with oauth_callback=oob, RFC 5849 signature base strings, and the idle and end-of-day expiry rules.
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
## When to Use Invoke this skill when building a trading bot for E\*TRADE. Unlike most modern broker APIs that use OAuth 2.0 bearer tokens, E\*TRADE uses **OAuth 1.0a** with HMAC-SHA1 request signing. Every API request must carry an `Authorization: OAuth ...` header with a nonce, timestamp, and signature computed over a canonical *signature base string*. This skill covers the full three-legged flow, per-request signing, and E\*TRADE's two distinct token lifetime rules. ## When NOT to Use - **For any other broker.** OAuth 1.0a request signing is specific to E\*TRADE among the brokers covered here. Schwab uses OAuth 2.0 PKCE (`schwab-api-oauth-pkce-flow`), Upstox uses refresh-token rotation (`upstox-oauth-refresh-token-rotation`). - **As a general OAuth 1.0a library.** The signing core here is RFC 5849-conformant, but `RSA-SHA1` and `PLAINTEXT` are not implemented — E\*TRADE documents `HMAC-SHA1` as the only supported `oauth_signature_method`. - **As an HTTP client.** `scripts/etrade_auth.py` deliberately issues no requests and adds no dependencies. It returns URLs and header values; you supply the transport, timeouts, and retry policy. …
Read the whole file at its exact version.
How to install
mdr add himanshuj16/algo-trading-skills/etrade-oauth1-signature-flow@sha256:cb984e0e9838bde6The line at the top of this page pins the label v2.0.0, 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_t5mag3czyvr5xelv)
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Versions
The registry has recorded 5 versions of this file, between Jul 30, 2026 and Sep 3, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.0.0 latest | 2026-09-03 | 8527a51 | 10,179 B | A | view · diff |
| v2.0.0 | 2026-09-03 | 64e8b01 | 10,259 B | A | view · diff |
| v2.0.0 | 2026-08-25 | 7e72405 | 10,219 B | A | view · diff |
| v1.0.0 | 2026-08-07 | 89d1436 | 2,321 B | A | view · diff |
| v1.0 | 2026-07-30 | dfc60c7 | 2,319 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 (10179 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
himanshuj16/algo-trading-skills · 50 stars · license Apache-2.0 · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_t5mag3czyvr5xelv GET https://markdownregistry.com/api/v1/resolve?ref=himanshuj16/algo-trading-skills/etrade-oauth1-signature-flow GET https://markdownregistry.com/api/v1/blob/cb984e0e9838bde6854cf58ce5d803691819b83db4a3657468a9ba525f3c3a6e
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.