Japanese public programs, one API.

6,771 programs. Exclusion-aware. MCP-native (protocol 2025-06-18).

jGrants is the application portal; jpintel is the discovery and compatibility layer. Query subsidies, loans, tax incentives, and certifications directly from an agent — no SDK needed.

Start in 5 seconds View on GitHub

Agriculture programs ship first; non-agri exclusions (50+) added during Weeks 2-4 post-launch.

Three pillars

6 REST endpoints

Search, detail, exclusion list, exclusion check, meta, billing. FTS5 trigram handles Japanese text verbatim (no tokenizer surprises).

  • GET /v1/programs/search
  • GET /v1/programs/{id}
  • GET /meta

Exclusion rules

22+ rules

Structured co-use conflicts, prerequisites, and mutex across programs. Post a list of program_ids, get back which combinations are legal.

  • absolute / conditional_reduction
  • prerequisite / mutex
  • source_url + evidence on every rule

MCP native

5 tools, protocol 2025-06-18

Claude Desktop, ChatGPT, Cursor, Gemini, or any MCP client over stdio. No SDK, no wrapper.

  • search_programs / get_program
  • list_exclusion_rules / check_exclusions
  • get_meta

Try it now

Swap in your API key and it runs.

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.autonomath.ai/v1/programs/search?q=%E8%AA%8D%E5%AE%9A%E6%96%B0%E8%A6%8F%E5%B0%B1%E8%BE%B2%E8%80%85&tier=S&tier=A&limit=5"

Returns {total, limit, offset, results[{unified_id, primary_name, tier, amount_max_man_yen, prefecture, official_url, ...}]}, sorted by tier (S to X). Japanese names and descriptions are preserved — do not double-encode.

Pricing

Tier Price Cap For
Free ¥0 100 req/day Evaluation / demo / light use
Paid ¥0.5 / req (tax exclusive) no cap, metered Indie, SaaS, internal RAG, enterprise — all same price

Example: 10,000 req/month ≈ ¥5,000 (~$33 USD). Billing is JPY; 10% JCT added at invoice; your card network handles FX. Full pricing and checkout →