Guide build-plugin on pre-request auth scripts - #93
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WebAPI base plugin 1.8.0 (squaredup-plugin-repository PR #1966, SAAS-8337) adds datasource-level pre-request scripting so plugins can handle custom auth flows no authMode expresses — token-exchange steps and per-request HMAC signing. The matching saas change lets a declarative plugin's base.config reference the script as a file under dataStreams/scripts/preRequest/, inlined at deploy time. The build-plugin skill had no coverage of this, so an agent building a plugin for such an API had no supported path. Add a reference section beside the auth patterns in metadata.md covering when to reach for a script (and to prefer built-in authModes first), the wiring including scriptingVariables and the reserved scriptState property, the script's variable scope, and a token-exchange example with state-cached expiry drawn from the PR's real N-Able script. Phase 1's auth step and the post-request-scripts section point at it, keeping the full material in one place per the skill-writing guidance. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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📝 WalkthroughWalkthroughThe build-plugin documentation now describes custom authentication pre-request scripts, their configuration and runtime behavior, execution timing, token caching example, and optional scaffolding. The skill version and authentication planning guidance were updated accordingly. ChangesCustom authentication documentation
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andrewmumblebee
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July 16, 2026 07:27
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Actionable comments posted: 1
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In @.claude/skills/build-plugin/references/metadata.md:
- Around line 245-251: Add timeout or cancellation handling to the auth fetch in
the pre-request hook, using an AbortSignal or the platform’s documented fetch
timeout mechanism. Ensure hung auth requests terminate within a defined limit so
plugin streams and imports cannot stall indefinitely.
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📒 Files selected for processing (3)
.claude/skills/build-plugin/SKILL.md.claude/skills/build-plugin/references/data-streams.md.claude/skills/build-plugin/references/metadata.md
clarkd
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Jul 21, 2026
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Looks spot on - thanks for picking up this chunk of work from Wayne!
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@andrewmumblebee I think this might need updating to place prerequest.js at the root? |
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📋 Summary
Adds guidance to the
build-pluginskill for the newpreRequestScriptcapability arriving with WebAPI base plugin 1.8.0 (squaredup/squaredup-plugin-repository#1966, SAAS-8337) and its saas-side deploy support, so an agent building a plugin for an API with a custom auth flow (token exchange, per-request HMAC signing) has a supported path.references/metadata.md, co-located with the auth patterns: when to reach for a script (prefer built-inauthModes first), wiring viascriptingVariablesand thedataStreams/scripts/preRequest/<plugin>.jsfile reference, the reservedscriptStateproperty, the script's variable scope, and a token-exchange example withstate-cached expiry drawn from the real N-Able script in the upstream PR.SKILL.md, the scaffold file tree, and the post-request-scripts section ofreferences/data-streams.md.Note: end-to-end this depends on both upstream PRs shipping — WebAPI 1.8.0 and the saas file-reference inlining.
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