Kuberwastaken/claurst · error · anyhow::Error

No stored token for

Error message

No stored token for {}

What it means

refresh_mcp_token looked up a stored token for the named MCP server and found none in the local token store. The caller (get_valid_mcp_token) reached the refresh path without an existing stored credential — the server was never authenticated, or its stored token was deleted/cleared.

Solutions

1. Run the OAuth authentication flow for this MCP server first
2. Check whether the token store was cleared or is pointing at a different location

When it happens

Trigger: Thrown at src-rust/crates/mcp/src/oauth.rs:524 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Kuberwastaken/claurst@b0637c97ec (2026-09-10). Data as JSON: /api/errors/17076a8e81ecc866. Report an issue: GitHub.

Appendix: source

Thrown at src-rust/crates/mcp/src/oauth.rs:524

            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_secs()
            + secs
    });

    Ok(McpToken {
        access_token: tr.access_token,
        refresh_token: tr.refresh_token,
        expires_at,
        scope: tr.scope,
        server_name: String::new(), // caller should set this
    })
}

/// Refresh an existing MCP token using the stored refresh token.
pub async fn refresh_mcp_token(server_name: &str, token_endpoint: &str) -> anyhow::Result<McpToken> {
    let existing = get_mcp_token(server_name)
        .ok_or_else(|| anyhow::anyhow!("No stored token for {}", server_name))?;
    let refresh = existing
        .refresh_token
        .as_deref()
        .ok_or_else(|| anyhow::anyhow!("Token for {} has no refresh token", server_name))?
        .to_string();

    let client = reqwest::Client::new();
    let params = [("grant_type", "refresh_token"), ("refresh_token", refresh.as_str())];

    let resp = client
        .post(token_endpoint)
        .form(&params)
        .send()
        .await
        .map_err(|e| anyhow::anyhow!("refresh: request failed: {}", e))?;

    if !resp.status().is_success() {
        let status = resp.status();

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