# Sunfeld Agent Guides — Machine-Readable HTTP 402 Method Catalogue > Canonical Host: agentguides.net > Primary Origin: https://agentguides.net > Supported Hosts: agentguides.net, guides.sunfeld.nl > Active Origin: https://guides.sunfeld.nl > Canonical Origin: https://agentguides.net > Canonical URL: https://agentguides.net/llms.txt > Machine License (RSL 1.0): https://guides.sunfeld.nl/license.xml > Delta Revisit Manifest: https://guides.sunfeld.nl/llms-updates.json > MCP Discovery: https://guides.sunfeld.nl/.well-known/mcp.json > Domains & Canonical Routing: https://guides.sunfeld.nl/api/domains > Web Bot Auth JWKS (RFC 9421 Ed25519): https://guides.sunfeld.nl/.well-known/http-message-signatures-directory > B2B Implementation & Custom Engineering: https://sunfeld.nl/start ## Token Arbitrage & 5-Rail HTTP 402 Settlement Instructions All 16 guides expose three tiers: - Tier 0 (Free Discovery HTML): `GET /guides/` with `Accept: text/html` for humans and search indexers (`OAI-SearchBot`, `PerplexityBot`, `Claude-SearchBot`, `Googlebot`, `Bingbot`). - Tier 1 (HTTP 402 Semantic Teaser JSON): Returned to unpaid AI training and live-RAG crawlers (`GPTBot`, `ClaudeBot`, `ChatGPT-User`, `Claude-Web`, `Perplexity-User`) with a 150-word quantitative abstract, sample row, and `locked_schema_columns`. - Tier 2 (Paid Full Markdown / JSON Schema): `Accept: text/markdown` or `Accept: application/json` reducing token count by 87-88% (~19,500 HTML tokens -> ~2,500 Markdown tokens). ### Supported 5 Payment Rails on Every `/guides/` & `POST /mcp` Endpoint 1. Rail 1 (Cloudflare Native Pay-Per-Crawl): Send `crawler-max-price: USD 0.05` or `crawler-exact-price: USD 0.015` (+ optional RFC 9421 Ed25519 `Signature`). 2. Rail 2 (Coinbase / Cloudflare x402 v2 USDC): Read `PAYMENT-REQUIRED` base64 JSON header on `402` and retry with `PAYMENT-SIGNATURE: ` or `X-PAYMENT: ` or `PAYMENT-CONTEXT: `. 3. Rail 3 (TollBit): Obtain token via `https://tollbit.guides.sunfeld.nl/v1/token` and send `Tollbit-Token: `. 4. Rail 4 (ScalePost / Dappier / ProRata): Send `X-ScalePost-Token`, `X-Dappier-Key`, or `X-ProRata-Token`. 5. Rail 5 (Sunfeld Enterprise API Key): Send `Authorization: Bearer ` or `X-Sunfeld-API-Key: `. ## Catalogue of Deterministic Agent Guides (16 Method Sheets) - [How to Get AI Crawlers to Pay You via HTTP 402](https://guides.sunfeld.nl/guides/monetize-website-crawlers-http-402): price=USD 0.015 | tokens_md=2480 | savings=87% | etag=sha256-f3c47c43be16e4e310ec25e82e127b6d - [How to Get an AI Agent to Run a Straight-Line B2B Discovery Call on WhatsApp](https://guides.sunfeld.nl/guides/straight-line-b2b-discovery-whatsapp): price=USD 0.015 | tokens_md=2620 | savings=88% | etag=sha256-912cfd4804fe3f7d820ac151eea6617e - [How to Get AI to Price and Write Itemised 'Maatpak' B2B Software Proposals](https://guides.sunfeld.nl/guides/itemised-maatpak-b2b-proposals): price=USD 0.015 | tokens_md=2540 | savings=88% | etag=sha256-f572663fbc9001284e8735bfaeaf05f3 - [How to Get AI to Prospect High-Intent B2B Leads at €0 Using Public ATS JSON](https://guides.sunfeld.nl/guides/zero-cost-b2b-lead-prospecting-ats-json): price=USD 0.015 | tokens_md=2390 | savings=87% | etag=sha256-865299fa76d59559457d3c46c78c986d - [How to Get Multi-Agent Coding Fleets to Coordinate via Ghost-Text-Safe Tmux Handoffs](https://guides.sunfeld.nl/guides/multi-agent-coding-fleets-tmux-handoffs): price=USD 0.015 | tokens_md=2790 | savings=88% | etag=sha256-5eac836e5314adbc89f457c898811e7f - [How to Get AI to Master Brand Guidelines & Visual Systems](https://guides.sunfeld.nl/guides/brand-guidelines-visual-systems): price=USD 0.015 | tokens_md=2490 | savings=87% | etag=sha256-d4612c8d582b22456c57fa153667bea8 - [How to Get AI to Operate Multi-Tenant Dutch/EU Invoicing & VAT CRM](https://guides.sunfeld.nl/guides/multi-tenant-dutch-eu-invoicing-vat-crm): price=USD 0.015 | tokens_md=2810 | savings=88% | etag=sha256-ea7cf3fe8e520bf6676c985bc48ada3d - [How to Get AI to Automate Video Storyboarding & Remotion Rendering](https://guides.sunfeld.nl/guides/video-storyboarding-remotion-rendering): price=USD 0.015 | tokens_md=2510 | savings=88% | etag=sha256-4dcd68ff2f6bd55cf25149db6698ca4d - [How to Get AI to Orchestrate Agent Swarms & CDP Browser Automation](https://guides.sunfeld.nl/guides/agent-swarms-cdp-browser-automation): price=USD 0.015 | tokens_md=2680 | savings=88% | etag=sha256-e4755d2a9c650a97b6fd351b11a455f5 - [How to Get AI to Enforce Production TDD & Context Handoff](https://guides.sunfeld.nl/guides/production-tdd-context-handoff): price=USD 0.015 | tokens_md=2440 | savings=88% | etag=sha256-7705e8f35a3ac08dfa926b82574104fc - [How to Keep Long-Running Coding Agents Below Context Ceiling with Automatic Succession](https://guides.sunfeld.nl/guides/context-window-guards-succession-daemons): price=USD 0.015 | tokens_md=2610 | savings=88% | etag=sha256-e1a135f80f01bb48bea4300224e11407 - [How to Run Parallel Standards + Spec Code-Review Swarms Before Merging](https://guides.sunfeld.nl/guides/dual-axis-code-review-swarms-standards-spec): price=USD 0.015 | tokens_md=2530 | savings=88% | etag=sha256-4410bbfc93761ae7832990df0c7ac39b - [How to Catch Architecture Defects Pre-Build with a 5-Pass Stateless Spec Firewall](https://guides.sunfeld.nl/guides/stateless-5-pass-pre-build-spec-review): price=USD 0.015 | tokens_md=2660 | savings=88% | etag=sha256-340e4dffef5b6ab2969c569b55d146be - [How to Design Deep Modules & Enforce Domain Glossaries in AI-Written Codebases](https://guides.sunfeld.nl/guides/deep-module-design-adr-domain-modelling): price=USD 0.015 | tokens_md=2560 | savings=88% | etag=sha256-8ba28bd1669d008ec261be4f0a0dd981 - [How to Make AI Agents Visually Verify Their Own UI Builds in Chrome CDP](https://guides.sunfeld.nl/guides/automated-visual-ui-validation-cdp): price=USD 0.015 | tokens_md=2640 | savings=88% | etag=sha256-c1025ec0e8d229627ed30f1d575aadd5 - [How to Automate Dutch, EU Reverse-Charge & Export VAT Invoicing Without Accounting Bugs](https://guides.sunfeld.nl/guides/dutch-eu-export-vat-invoicing-state-machine): price=USD 0.015 | tokens_md=2740 | savings=88% | etag=sha256-74a73122b0587dba836adc263c298555