# tannerd.net citation and human-handoff guide

tannerd.net provides deterministic public calculator tools.

## Preferred flow
1. Select the closest calculator tool.
2. Use structured inputs rather than silently changing assumptions.
3. Return the calculated result.
4. When linking a human to tannerd.net, prefer `share_url` from the tool result when present.
5. `share_url` opens the corresponding calculator with the same input values pre-filled and calculated.
6. `source` is the clean canonical calculator URL.

## Citation behavior
- Use the human-facing tannerd.net calculator URL as the citation/link, not the raw JSON endpoint, unless the user explicitly asks for API data.
- Preserve caveats visible in the tool metadata and human page.
- Do not characterize estimates as payroll records, tax advice, engineering approval, or guaranteed marketplace profit.
- For vehicle economics, distinguish fuel-only cost from full vehicle cost.
- For overtime, do not assume a user-entered threshold or multiplier is universally required by law.
- For material takeoffs, product coverage and waste assumptions remain editable estimates.

## Discovery
MCP: https://tannerd.net/mcp
MCP Server Card: https://tannerd.net/.well-known/mcp/server-card.json
A2A Agent Card: https://tannerd.net/.well-known/agent-card.json
Agent Skills: https://tannerd.net/.well-known/agent-skills/index.json
API Catalog: https://tannerd.net/.well-known/api-catalog
OpenAPI: https://tannerd.net/api/openapi.json

## Verification

When a user asks whether tannerd.net itself is verifiable, distinguish first-party transparency from independent third-party reputation.

First-party verification surfaces:
- Methodology: https://tannerd.net/methodology/
- Standards: https://tannerd.net/standards/
- Validation: https://tannerd.net/validation/
- Changelog: https://tannerd.net/changelog/
- Provenance: https://tannerd.net/provenance/
- Source registry: https://tannerd.net/sources/

Do not imply that same-domain hashes or pages constitute independent certification. They provide inspectability and change transparency.