The service's listing describes it this way: Find U.S. retirement plans (401(k), 403(b), pension and others) in public DOL Form 5500 filings, plan years 2021 onward, for prospecting, benchmarking and research: by company name (fuzzy, including former and DBA names), EIN, state, assets, participants, recordkeeper (any brand, matched to today's firm) or plan type. Each result: EIN and plan number, plan and sponsor name, assets, participants, current recordkeeper. Small plans (about 9 in 10) file no Schedule C, so no recordkeeper. Website
A service is a tool an AI agent pays to call. Plan Data API is listed on this page under Data APIs, settling on Base, through x402. 30-day settled volume on this page is $1.83. The listing comes from the service catalog. Open a row for payments, payers, and chains. See Bazaar, agent payment use cases, and the methodology.
FacilitatorsCoinbase
Payee
- 0x1c79…cb4bBase
Methodology · settled volume through 2026-11-10 · catalog Nov 12, 2026, 1:02 AM UTC
| Metric | 24h | 7d | 30d |
|---|---|---|---|
| Volume | $0.01 | $1.83 | $1.83 |
| Payments | 1 | 17 | 17 |
| Payers | 1 | 4 | 4 |
| Avg payment | $0.01 | $0.1076 | $0.1076 |
| Share of Data APIs | 0.0% | 0.1% | 0.0% |
| Use-case rank | #56 | #21 | #50 |
Payers can be counted more than once when they paid through more than one facilitator.
Settled volume
$1.83
New
Payments
17
30d
Payers
4
30d
Avg payment
$0.1076
volume / payments
Daily volume and buyers · last 30 days
Daily settled volume for Plan Data API
Data through Nov 10, 2026. Source: public settlement logs. Methodology
| Time | Daily settled volume for Plan Data API |
|---|---|
| 2026-11-08 | $1.80 |
| 2026-11-09 | $0.02 |
| 2026-11-10 | $0.01 |
Payers
Daily buyers for Plan Data API
| Time | Daily buyers for Plan Data API |
|---|---|
| 2026-11-08 | 4 |
| 2026-11-09 | 2 |
| 2026-11-10 | 1 |
Buyer concentration
98.4%
Top payer's share of lifetime volume. Not the period selected above.
Repeat buyers
25.0%
Lifetime buyers with more than one payment, divided by all buyers.
Endpoints and prices
Price, network, and asset come from the x402 Bazaar catalog.
| Endpoint | Network | Asset | Price | Scheme |
|---|---|---|---|---|
| https://api.form5500data.com/search Find U.S. retirement plans (401(k), 403(b), pension and others) in public DOL Form 5500 filings, plan years 2021 onward, for prospecting, benchmarking and research: by company name (fuzzy, including former and DBA names), EIN, state, assets, participants, recordkeeper (any brand, | base | USDC | $0.01 | exact |
| https://api.form5500data.com/changes Sales triggers and change events across U.S. retirement plans, found by comparing each plan's consecutive public DOL Form 5500 filings: recordkeeper and advisor changes (compared by firm family, so rebrands aren't changes), auditor changes, new plans, mergers, terminations, late | base | USDC | $0.25 | exact |
| https://api.form5500data.com/fees Schedule C fee breakdown for one U.S. retirement plan from public DOL Form 5500 filings: pay by role (recordkeeping, advisory, participant advice, TPA, investment management, trustee, other) in dollars and basis points, every provider with names as filed and normalized, direct an | base | USDC | $0.10 | exact |
| https://api.form5500data.com/plan Latest clean profile of one U.S. retirement plan from public DOL Form 5500 filings: identity and status, plan type and features, net assets and participants, average balance, approximate return, recordkeeper, advisors and auditor normalized to canonical firms and today's parent, | base | USDC | $0.03 | exact |
| https://api.form5500data.com/plan/history Every plan year (2021 onward) of one U.S. retirement plan from public DOL Form 5500 filings, amendments resolved: net assets, participants (flagged across the 2023 counting change), average balance, approximate return, why assets changed (contributions, investment return, distrib | base | USDC | $0.25 | exact |
| https://api.form5500data.com/prospects Prospect lists of U.S. retirement plans from public DOL Form 5500 filings, for sales prospecting and market research: up to 100 plans per call by industry (DOL business code, matched from plain words), state, city, ZIP, size, plan type, inception date or recordkeeper. Each plan: | base | USDC | $0.25 | exact |
Payment processors used
| Processor | Volume | Tx | Share |
|---|---|---|---|
| Coinbasex402 | $1.83 | 17 | 100.0% |
Other services in Data APIs
All in this use case- market.datapackvibe.com#1 · $4.17K 30d
- api.zerion.io#2 · $571.63 30d
- x402.orthogonal.com#3 · $528.45 30d
- Arkham x402#4 · $378.60 30d
- Storm Station 247#5 · $284.21 30d
How we count Plan Data API
We read settlements directly from each chain's public records and refresh them every few minutes.
Data through 2026-11-10. Source: public settlement logs.
Cite this
APA
Agent GDP. (2026). Plan Data API [Data set]. Retrieved November 12, 2026, from https://agentgdp.io/service/api.form5500data.com.
MLA
"Plan Data API." Agent GDP, 12 Nov. 2026, https://agentgdp.io/service/api.form5500data.com.
BibTeX
@misc{agentgdp_plan_data_api_2026,
author = {{Agent GDP}},
title = {Plan Data API},
year = {2026},
url = {https://agentgdp.io/service/api.form5500data.com},
note = {Retrieved November 12, 2026. Data through 2026-11-10. Licensed under CC BY 4.0.},
license = {https://creativecommons.org/licenses/by/4.0/}
}Plain text
Plan Data API: $1.83 settled volume (30d), 17 payments, 4 buyers. Agent GDP, data through 2026-11-10. https://agentgdp.io/service/api.form5500data.com Retrieved November 12, 2026.
Data from Agent GDP (https://agentgdp.io/service/api.form5500data.com), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
Payers on a day can be counted more than once if they paid through more than one facilitator. Weekly change compares the last 7 full days with the 7 days before, once both weeks are fully covered on this service's networks; other periods compare with the previous period of the same length. The page link uses the service's site when we have one, and the payee address otherwise.
Volume and payment counts include earlier days. Transaction-level detail available from arc from October 26, 2026, base from October 23, 2026, polygon from October 27, 2026, solana from April 12, 2026, tempo from June 22, 2026.
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For agents
Check a seller before your agent pays it
The same check as JSON, $0.01 per call in USDC on Base over x402. In an MCP client, use the tool check_seller_before_paying.
GET /api/v1/x402/check?q=api.form5500data.comOr check every new payee automatically:
npm i @agentgdp/check-before-payGet API access Higher limits cover the same figures. Full history, saved views, and morning alerts are on Pro.
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