zed-industries/zed · error · anyhow::Error

SKILL.md missing closing frontmatter delimiter (---)

Error message

SKILL.md missing closing frontmatter delimiter (---)

What it means

Error "SKILL.md missing closing frontmatter delimiter (---)" thrown in zed-industries/zed.

Source

Thrown at crates/agent_skills/agent_skills.rs:389

        let after_dashes = line_start + 3;
        let end = if after_dashes == bytes.len() {
            after_dashes
        } else if bytes[after_dashes] == b'\n' {
            after_dashes + 1
        } else if after_dashes + 1 < bytes.len()
            && bytes[after_dashes] == b'\r'
            && bytes[after_dashes + 1] == b'\n'
        {
            after_dashes + 2
        } else {
            // Line is something like `---trailing` or `----`; not a candidate.
            continue;
        };
        candidates.push(end);
    }

    if candidates.is_empty() {
        anyhow::bail!("SKILL.md missing closing frontmatter delimiter (---)");
    }

    // Try each candidate in order: slice content up through the candidate's
    // terminator and ask `serde_yaml_ng` to parse it as a YAML stream. If the
    // first document deserializes into `SkillMetadata`, that candidate is the
    // real closer. Otherwise an earlier candidate may have cut the YAML in the
    // middle of a scalar / quoted string; try the next one.
    let mut last_error: Option<anyhow::Error> = None;
    for end in candidates {
        let prefix = &content[..end];
        let mut docs = serde_yaml_ng::Deserializer::from_str(prefix);
        let Some(first_doc) = docs.next() else {
            continue;
        };
        match SkillMetadata::deserialize(first_doc) {
            Ok(metadata) => return Ok((metadata, &content[end..])),
            Err(e) => last_error = Some(anyhow::Error::new(e)),
        }

View on GitHub (pinned to bc538def45)

When it happens

Trigger: Thrown at crates/agent_skills/agent_skills.rs:389 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@bc538def45 (2026-08-16). Data as JSON: /api/errors/22efd7434f946cde. Report an issue: GitHub.