name: tesseron-docs
description: Authoritative Tesseron documentation lookup via the `@tesseron/docs-mcp` MCP server. Calls `search_docs` to find relevant pages and `read_doc` to fetch the full markdown body when the user asks precision questions about Tesseron protocol or SDK behaviour. Triggers on requests that need an exact spec, not an overview — wire format (JSON-RPC envelopes, `tesseron/hello`, `tesseron/welcome`, `tesseron/resume`, `actions/progress`, `actions/cancel`), transport framing, handshake and claim-code flow, session resume and resumeToken, lifecycle transitions, sampling contract, elicitation contract (`ctx.confirm`, `ctx.elicit`), progress + cancellation via `AbortSignal`, error codes (`TesseronErrorCode`, `SamplingNotAvailableError`, `ElicitationNotAvailableError`, `TimeoutError`, `CancelledError`, `ResumeFailedError`), capability negotiation, origin allowlist, multi-app namespacing, MCP gateway config, Standard Schema (Zod, Valibot, Typebox) integration, action-builder steps, resource read/subscribe, React hook semantics. Use phrases like "what error code does X return", "what does tesseron/hello look like", "exact handshake shape", "resumeToken flow", "gateway origin allowlist", "show me the spec for", "what fields does X accept". The `framework` skill handles orientation and the mental model; `tesseron-docs` handles chapter-and-verse questions.

Tesseron docs

This skill is the on-demand, authoritative lookup path for Tesseron documentation. Whenever precision matters (exact wire-format envelope, specific error code, fields a handshake carries, structural contract of resume) prefer calling the MCP tools below over recalling from memory or the framework skill's cheat sheet.

How to use

The plugin bundles @tesseron/docs-mcp at install time, so these tools are normally already connected in Claude Code as mcp__plugin_tesseron_tesseron-docs__*:

1. Search first. Call search_docs({ query, limit }) with the user's question as-is (or a short paraphrase that keeps the load-bearing nouns). It returns ranked hits with slug, title, description, score, and a ~240-char snippet. limit defaults to 8 and caps at 20; 4-8 is the sweet spot.

1. Read the top hit. Call read_doc({ slug }) on the first promising hit. It returns the full markdown body plus structured frontmatter (title, description, section, related). Quote the exact spec text into your answer instead of paraphrasing it.

1. Walk the graph if the answer is cross-cutting. The related field in read_doc's response is a slug list. Follow those edges with more read_doc calls when a single page does not cover the question. Typical example: protocol/resume is incomplete without protocol/handshake and protocol/transport.

1. Fall back to list_docs only when the user wants the full catalogue ("what are all the protocol pages?") or when search_docs keeps missing the page you expect.

When *not* to use this skill

• For orientation or mental-model questions ("what is Tesseron?", "how does the SDK fit together?", "which consumer package should I use?") — load the framework skill. That skill is a cheat sheet; this one is a manual.
• For project-integration tasks ("add Tesseron to this app", "switch to @tesseron/react", "upgrade versions") — load the tesseron-dev skill.
• For codebase mapping or review — load the tesseron-explorer or tesseron-reviewer skill. They read the project, not the docs.

Fallbacks when the MCP server is not configured

If calls to mcp__plugin_tesseron_tesseron-docs__* fail (e.g. the user has disabled the MCP server) fall back in order:

1. Read directly from docs/src/content/docs/**/*.{md,mdx} if the workspace is the Tesseron monorepo itself.
2. Fetch the deployed site: https://eigenwise.github.io/tesseron/llms-full.txt has the complete docs as plain text; https://eigenwise.github.io/tesseron/<section>/<slug>/ serves the rendered page.
3. Defer to the framework skill's bundled reference files (plugin/skills/framework/references/*.md).

Never answer precision questions from training data alone without noting that you could not retrieve the current spec.

Citing sources

When you read a page via read_doc, cite it by slug and link the hosted URL so the user can verify. Example:

Per protocol/handshake (https://eigenwise.github.io/tesseron/protocol/handshake/), the welcome frame carries sessionId, claimCode, resumeToken, and the negotiated capabilities.

The slug is stable; the published URL tracks the same path.