Official MCP RegistryListed
Plan Data API
Form 5500 data for prospecting and research: U.S. retirement plans, recordkeepers, fees, switches.
First seen 9 Nov 2026. Evidence as of 12 Nov 2026.
7
Tools
From an anonymous probe
1
Source listings
Each with its own history
11
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| find_plan_changes | Change events detected by comparing each plan's consecutive filings, newest filing first. Each event has before/after values, a confidence, the year compared against, a plain-English detail and the ACK ID of the filing that shows it. Providers are compared by family, so a rebrand (Great-West → Empower) isn't a change. A move caused by a sale of the old recordkeeper's business (Securian → The Standard, Prudential → Empower; the list is at `get_coverage` `book_sales`) is a `recordkeeper_sold` event, not a `recordkeeper_change` switch: the sponsor didn't choose it. Each event also has the plan's size around the event (`net_assets_at_event`), which `min_assets` and `sort=assets` use. The newest plan year is still being filed, so its counts grow month to month. Price: $0.25 per call, paid in USDC on Base (mainnet) with x402 (MCP transport), or from card credits (an 'Authorization: Bearer <key>' header). Without payment the tool returns the payment requirements. Errors and empty results aren't charged. Same data as GET /changes of the Plan Data API. | Read-only |
| get_coverage | What the data covers per plan year, every limitation, the coverage-note codes responses can carry, the event types, the screening signals and the plan-type values. Free. Also lists the prices and what isn't charged. Same data as GET /coverage of the Plan Data API. | Read-only |
| get_plan | The plan as of its latest filing: identity and status, plan type and features, assets and participants, average balance and approximate return, recordkeeper, advisors and auditor, headline fees, screening signals and data-quality flags. When the latest year is a small-plan filing (no Schedule C), the recordkeeper shown is the last one seen on an earlier Schedule C, labeled with its year and a lower confidence. `availability` says which years `get_plan_history` and `get_plan_fees` will return. Price: $0.03 per call, paid in USDC on Base (mainnet) with x402 (MCP transport), or from card credits (an 'Authorization: Bearer <key>' header). Without payment the tool returns the payment requirements. Errors and empty results aren't charged. Same data as GET /plan of the Plan Data API. | Read-only |
| get_plan_fees | For each large plan year: Schedule C pay by role (recordkeeping, advisory, participant advice, TPA, investment management, trustee, other) in dollars and basis points of average net assets; every provider on the Schedule C with names as filed, codes, direct and indirect pay; Schedule H line 2i expenses as a second view; and a completeness rating with the reasons. Small plans file no Schedule C: the response still succeeds, with `schedule_c_available: false` and the plan-paid expenses that small plans do report. Check `get_plan` `availability.fee_years` first to see which years have a breakdown. Fees are floors: see `meta.coverage_notes`. Price: $0.10 per call, paid in USDC on Base (mainnet) with x402 (MCP transport), or from card credits (an 'Authorization: Bearer <key>' header). Without payment the tool returns the payment requirements. Errors and empty results aren't charged. Same data as GET /fees of the Plan Data API. | Read-only |
| get_plan_history | One entry per plan year, oldest first: the filing used, assets and participants, average balance, approximate return, participant growth (flagged across the 2023 counting change), the growth breakdown (contributions, investment return, distributions, expenses, transfers), plan-paid expenses and Schedule C fees in bps, the year's recordkeeper / primary advisor / auditor, and the change events detected that year. Price: $0.25 per call, paid in USDC on Base (mainnet) with x402 (MCP transport), or from card credits (an 'Authorization: Bearer <key>' header). Without payment the tool returns the payment requirements. Errors and empty results aren't charged. Same data as GET /plan/history of the Plan Data API. | Read-only |
| list_prospects | A list of plans for prospecting or research, many per call: plan and sponsor name, mailing address, EIN and plan number, industry, plan type, effective (inception) date, participants and net assets at the end of the latest plan year, form type, recordkeeper and primary advisor last seen on Schedule C, and the filing's ACK ID. Filter by industry, place (state, city, ZIP), size, plan type, effective date or recordkeeper. Large (long-form) filers only unless `filer_size` says otherwise. Use `search_plans` instead to find one company's plan by name, and `get_plan` for everything about one plan. Paging stops at offset 500: narrow the filters to see more. Price: $0.25 per call, paid in USDC on Base (mainnet) with x402 (MCP transport), or from card credits (an 'Authorization: Bearer <key>' header). Without payment the tool returns the payment requirements. Errors and empty results aren't charged. Same data as GET /prospects of the Plan Data API. | Read-only |
| search_plans | Find plans. Give at least one of `name`, `ein`, `state` or `recordkeeper`; the other filters narrow the list. Each result is a short summary: call `get_plan` with its `ein` and `pn` for the profile. With `name`, results are ordered by match score, then size; without it, largest plans first. Plans that ended are hidden unless `include_ended=true`. Paging stops at offset 500: narrow the filters to see more. Price: $0.01 per call, paid in USDC on Base (mainnet) with x402 (MCP transport), or from card credits (an 'Authorization: Bearer <key>' header). Without payment the tool returns the payment requirements. Errors and empty results aren't charged. Same data as GET /search of the Plan Data API. | Read-only |
Change history
- find_plan_changes: input schema changed
- find_plan_changes: description changed (+"A move caused by a sale of the old recordkeeper's business (Securian → The Standard, Prudential → Empower; the list is at `get_coverage` `book_sales`) is a `recordkeeper_sold` event, not a `recordkeeper_change` switch: the sponsor didn't choose it.")
- server instructions changed (+"plans; a recordkeeper move caused by a sale of the old recordkeeper's business is its own event type (recordkeeper_sold), not a switch." -"plans.")
- search_plans: description changed (+"transport), or from card credits (an 'Authorization: Bearer <key>' header)." -"transport).")
- list_prospects: description changed (+"transport), or from card credits (an 'Authorization: Bearer <key>' header)." -"transport).")
- get_plan_history: description changed (+"transport), or from card credits (an 'Authorization: Bearer <key>' header)." -"transport).")
- get_plan_fees: description changed (+"transport), or from card credits (an 'Authorization: Bearer <key>' header)." -"transport).")
- get_plan: description changed (+"transport), or from card credits (an 'Authorization: Bearer <key>' header)." -"transport).")
- find_plan_changes: description changed (+"transport), or from card credits (an 'Authorization: Bearer <key>' header)." -"transport).")
- server instructions changed (+"No crypto wallet? Buy prepaid credits by card at https://api.form5500data.com/buy and connect with the header 'Authorization: Bearer <key>': each paid tool then takes its price from the key's balance (same prices and rules), with no x402 needed.")
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | com.form5500data/plan-data | 9 Nov 2026 | 12 Nov 2026 | 1 |