Extend agents with skills changedagent-sdk/skills
Nearest release: v2.1.309, published 4 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 23 Oct 2026 00:36 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 30 Oct 2026 18:07 UTC.
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466466
467467Each SDK surfaces the rejection differently:
468468
469**TypeScript**
469> [tab] TypeScript
470>
471> The TypeScript SDK throws an `Error` stating the rule the entry broke. For example, `skills: ["docs:*"]` throws:
472>
473> ```text theme={null}
474> Invalid skill name "docs:*": wildcard-suffix names are not allowed; list each skill by its exact name.
475> ```
476>
477> An empty name reports `Skill names must be non-empty strings.`
478>
479> Before TypeScript Agent SDK 0.3.221, the SDK didn't run this check.
470480
471The TypeScript SDK throws an `Error` stating the rule the entry broke. For example, `skills: ["docs:*"]` throws:
472
473```text theme={null}
474Invalid skill name "docs:*": wildcard-suffix names are not allowed; list each skill by its exact name.
475```
476
477An empty name reports `Skill names must be non-empty strings.`
478
479Before TypeScript Agent SDK 0.3.221, the SDK didn't run this check.
480
481**Python**
482
483The Python SDK raises `ValueError` stating the rule the entry broke. For example, `skills=["docs:*"]` raises:
484
485```text theme={null}
486ValueError: Invalid skill name 'docs:*': wildcard-suffix names are not allowed; list each skill by its exact name.
487```
488
489An empty name reports `Skill names must be non-empty strings`.
490
491Before Python Agent SDK 0.2.129, the SDK didn't run this check.
481> [tab] Python
482>
483> The Python SDK raises `ValueError` stating the rule the entry broke. For example, `skills=["docs:*"]` raises:
484>
485> ```text theme={null}
486> ValueError: Invalid skill name 'docs:*': wildcard-suffix names are not allowed; list each skill by its exact name.
487> ```
488>
489> An empty name reports `Skill names must be non-empty strings`.
490>
491> Before Python Agent SDK 0.2.129, the SDK didn't run this check.
492492
493493### Additional troubleshooting
494494
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